HomeMy WebLinkAboutResolution - 3238 - Contract - Kerr Construction - Strip Paving Improvements, 82Nd Street - 10/24/1989Ii.
BID #10356 Resolution
# 3238
October 24, 1989
Item #26
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RESOLUTION
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
THAT the Mayor of the City of Lubbock BE and is hereby authorized and
directed to execute for and on behalf of the City of Lubbock a Contract by
and between the City of Lubbock and Kerr Construction Company for 82nd
Street strip paving improvements, attached herewith, which shall be spread
upon the minutes of the Council and as spread upon the minutes of this Coun-
cil shall constitute and be a part of this Resolution as if fully copied
herein in detail.
Passed by the City Council this 24th day of October , 1989.
,C
B. C. McKINN, MAYOR
ATTEST:-
Rane e -Boyd, City Secrettry
APPROVED AS TO CONTENT:
'Gene Eads, Purc asing anager
APPROVED AS TO FORM:
Harold Willard, Assistant City
Attorney
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I � CITY OF LUBBOCK
ril
Lubbock, Texas
r o? of 35
CITY OF LUBBOCK
SPECIFICATIONS
FOR
82ND STREET STRIP PAVING IMPROVEMENTS
BID # 10356
MAILED TO VENDOR: 9-28-89
CLOSE: 10-12-89; 2:00 p.m.
BID # 10356
ADDENDUM # 1
PLEASE NOTE THE FOLLOWING:
1. All culvert pipe to be installed shall be twenty-four (24)
inches inside diameter.
2. Gravel driveway repairs shall be six (6) inch caliche base
with at least two (2) inch depth of grade three (3)
aggregate surface.
3. Page SC -2; Paragraph 3: Time and Order for completion: 250
working days shall be changed to 120 working days.
4. General Instructions to Bidders, Page 5: Time and Order for
Completion: 120 calendar days shall be changed to 120
working days.
5. Traffic flow on 82nd Street will be maintained at all times.
Salvage material may be used to construct detours as
necessary. Excess salvage material and salvage material
used for any detours shall be stockpiled at either 84th
Street and Avenue P. or at 38th Street between Quirt Avenue
and Southeast Drive.
WTHA
CITK
PURCHASING OFFICE
PLEASE RETURN ONE COPY WITH YOUR BID
CITY OF LU880CK
SPECIFICATIONS
for
TITLE: 82ND STREET STRIP PAVING IMPROVEMENTS
ADDRESS: I-27 TO QUIRT AVENUE
BID NUMBER: 10356
PROJECT NUMBER: 1441-553101-9474
CONTRACT PREPARED BY: Purchasing Department
EZ
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INDEX
PAGE
1. NOTICE TO BIDDERS..........................................................................................3
2. GENERAL INSTRUCTIONS TO BIDDERS............................................................................4
3. BID PROPOSAL - BID FOR LUMP SUM CONTRACTS.................................................................10
4. PAYMENT BOND..............................................................................................13
5. PERFORMANCE BOND...............'...........................................................................16
6. CERTIFICATE OF INSURANCE..................................................................................19
7. CONTRACT..................................................................................................21
8. GENERAL CONDITIONS OF THE AGREEMENT.......................................................................23
9. CURRENT WAGE DETERMINATIONS...............................................................................41
10. SPECIFICATIONS............................................................................................42
11. SPECIAL CONDITIONS........................................................................................43
12. NOTICE OF ACCEPTANCE......................................................................................45
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NOTICE TO BIDDERS
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Ago
NOTICE TO BIDDERS
BID # 10356
Sealed proposals addressed to Gene Eads, C.P.M., Purchasing Manager, City of Lubbock, Texas, will be
received at the office of the Purchasing Manager, 1625 13th St., Room L-04, Lubbock, Texas, 79401, until
2:00 o'clock p.m. on the 12st day of October, 1989 or as changed by the issuance of formal addenda to all
planholders, to furnish all labor and materials and perform all work for the construction of the following
described project:
82ND STREET PAVING IMPROVEMENTS
After the expiration of the time and date above first written, said sealed proposals will be opened
a� by the Purchasing Manager at his office and publicly read aloud.
a
It is the sole responsibility of the bidder to insure that his bid is actually in the office of Gene
Eads, Purchasing Manager for the City of Lubbock, prior to the expiration of the date above first written.
The City Council will consider the bids on the 26th day of October. 1989. at Municipal Bldg.,
Lubbock, Texas, or as soon thereafter as may be reasonably convenient, subject to the right to reject any or
all bids and waive any formalities. The successful bidder will be required to furnish a performance bond
and payment bond in accordance with Article 5160, Vernon's Ann. Civil St., in the amount of 100% of the
total contract price in the event that said contract price exceeds $25,000.00. Said statutory bonds should
be issued by a company carrying a current Best Rating of B or superior, as the rating of the bond company is
j a factor that will be considered in determination of the lowest responsible bidder. If the contract price
does not exceed $25,000.00 the said statutory bonds will not be required.
I Bidders are required, whether or not a payment or performance bond is required, to submit a
cashier's or certified check issued by a bank satisfactory to the City of Lubbock, or a proposal bond from a
reliable surety company, payable without recourse to the order of the City of Lubbock in an amount not less
than 5% of the total amount of the bid submitted as a guarantee that bidder will enter into a contract and
r' execute all necessary bonds (if required) within 10 days after notice of award of the contract to him.
It shall be each bidders sole responsibility to inspect the site of the work and to inform himself
regarding all local conditions under which the work is to be done. It shall be understood and agreed that
all such factors have been thoroughly investigated and considered in the preparation of the bid submitted.
4 The plans, specifications, proposal forms and contract documents may be examined at the office of
( the Purchasing Manager for the City of Lubbock, Texas.
!^ Attention of each bidder is particularly called to the schedule of general prevailing rate of per
diem wages included in the contract documents on file in the office of the Purchasing Manager of the City of
Lubbock, which document is specifically referred to in this notice to bidders. Each bidder's attention is
further directed to provision of Article 5159x, Vernon's Ann. Civil St., and the requirements contained
therein concerning the above wage scale and payment by the contractor of the prevailing rates of wages as
heretofore established by owner in said wage scale.
The City of Lubbock hereby notifies all bidders that in regard to any contract entered into pursuant
to this advertisement, minority and women business enterprises will be afforded equal opportunities to
submit bids in response to this invitation and will not be discriminated against on the grounds of race,
color, sex, or national origin in consideration for an award.
There will be a pre-bid conference on 27th day of September, 1989, at 10:00 o'clock a.m., Personnel
Conference Room #108, Municipal Building, 1625 13th Street.
CITY OF LUBBOCK
BY: Gene Eads, C.P.M.
Purchasing Manager
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ADVERTISEMENT FOR BIDS
!� BID # 10356
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Sealed proposals addressed to Gene Eads, C.P.M., Purchasing Manager, City of Lubbock, Texas, will be
received at the office of the Purchasing Manager, Municipal Building, 1625 13th Street, Room L-04, Lubbock,
Texas, 79401 until 2:00 o'clock p.m. on the 12th day of October, 1989 or as changed by the issuance of
formal addenda to all planholders, to furnish all labor and materials and perform all work for the
construction of the following described project:
82ND STREET PAVING IMPROVEMENTS
After the expiration of the time and date above first written, said sealed proposals will be opened
by the Purchasing Manager at his office and publicly read aloud.
The plans, specifications, proposal forms and contract documents may be examined at the office of
the Purchasing Manager for the City of Lubbock, Texas.
Attention of each bidder is particularly called to the Schedule of General Prevailing Rate of Per
Diem Wages included in the contract documents on file in the office of the Purchasing Manager of the City of
Lubbock, Texas. Each bidder's attention is further directed to the provisions of Article 5159a, Vernon's
Ann. Civil St., and the requirements contained therein concerning such wage scales and payment by the
contractor of the prevailing rates of wages as heretofore established by the City of Lubbock.
The City of Lubbock hereby notifies all bidders that in regard to any contract entered into pursuant
to this advertisement, minority and women business enterprises will be afforded equal opportunities to
submit bids in response to this invitation and will not be discriminated against on the grounds of race,
color, sex, or national origin in consideration for an award.
There will be a prebid conference on 27th day of September. 1989, at 10:00 o'clock a.m., Personnel
Conference Room 108, Municipal Building, 1625 13th Street.
Gene s, C.P.M.
PURCHASING MANAGER
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GENERAL INSTRUCTIONS TO BIDDERS
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GENERAL INSTRUCTIONS TO BIDDERS
/n► 1. SCOPE OF WORK
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The work to be done under the contract documents shall consist of the following:
82nd Street strip paving from 1-27 to Quirt Avenue. Project includes approximately 22,000 S.Y. of A.C.
paving on 311 A.S. base and 61, caliche sub -base..
The contractor shall furnish all labor, superintendence, machinery, equipment and all materials necessary to
complete this project in accordance with contract documents.
�., 2. CONTRACT DOCUMENTS
All work covered by this contract shall be done in accordance with contract documents described in the Gen-
eral Conditions.
t All bidders shall be thoroughly familiar with all of the requirements set forth on the contract documents
for the construction of this project and shall be responsible for the satisfactory completion of all work
•�► contemplated by said contract documents.
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3. PLANS FOR USE BY BIDDERS
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It is the intent of the City of Lubbock that all parties with an interest in submitting a bid on the project
covered by the contract documents be given a reasonable opportunity to examine the documents and prepare a
bid without charge of forfeiture of deposit. The contract documents, may be examined without charge as
noted in the Notice to Bidders.
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4. TIME AND ORDER FOR COMPLETION
w The construction covered by the contract documents shall be fully completed within 120 (ONE HUNDRED TWENTY)
calendar days from the date specified in the Notice to Proceed issued by the City of Lubbock to the
successful bidder.
The Contractor will be permitted to prosecute the work in the order of his own choosing, provided, however,
the City reserves the right to require the Contractor to submit a progress schedule of the work contemplated
by the contract documents. In the event the City requires a progress schedule to be submitted; and it is
A' determined by the City that the progress of the work is not in accordance with the progress schedule so sub-
mitted, the City may direct the Contractor to take such action as the City deems necessary to insure comple-
tion of the project within the time specified.
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5. PAYMENT
All payments due to Contractor shall be made in accordance with the provisions of the General Conditions of
f the contract documents.
r'► 6. AFFIDAVITS OF BILLS PAID
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The City of Lubbock reserves the right, prior to final acceptance of this project to require the Contractor
to execute an affidavit that all bills for labor, materials and incidentals incurred in the construction of
the improvements contemplated by the contract documents have been paid in full and that there are no claims
pending, of which the Contractor has been notified.
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7. MATERIALS AND WORKMANSHIP
The intent of these contract documents is that only materials and workmanship of the best quality and grade
will be furnished. The fact that the specifications may fail to be sufficiently complete in some detail
wilt not relieve the Contractor of full responsibility for providing materials of high quality and for pro-
tecting them adequately until incorporated into the project. The presence or absence of a representative of
the City on the site will not relieve the Contractor of full responsibility of complying with this provi-
sion. The specifications for materials and methods set forth in the contract documents provide minimum
standards of quality which the Owner believes necessary to procure a satisfactory project.
8. GUARANTEES
All equipment and materials incorporated in the project and all construction shall be guaranteed against de-
fective materials and workmanship. Prior to final acceptance, the Contractor shall furnish to the Owner, a
written general guarantee which shalt provide that the Contractor shall remedy any defects in the work, and
pay for any and all damages of any nature whatsoever resulting in such defects, when such defects appear
within ONE year from date of final acceptance of the work as a result of defective materials or workmanship,
at no cost to the owner (City of Lubbock).
9. PLANS FOR THE CONTRACTOR
The contractor will be furnished one set of plans and specifications, and related contract documents for his
use during construction. Plans and specifications for use during construction will only be furnished di-
rectly to the Contractor. The Contractor shall then distribute copies of plans and specifications to sup-
pliers, subcontractors or others, as required for proper prosecution of the work contemplated by the Con-
tractor.
10. PROTECTION OF THE WORK
The Contractor shall be responsible for the care, preservation, conservation, and protection of all materi-
als, supplies, machinery, equipment, tools, apparatus, accessories, facilities, and all means of construc-
tion, and any and all parts of the work whether the Contractor has been paid, partially paid, or not paid
for such work, until the date the City issues its certificate of completion to Contractor. The City re-
serves the right, after the bids have been opened and before the contract has been awarded, to require of a
bidder the following information:
(a) The experience record of the bidder showing completed jobs of a similar nature to the one covered by
the proposed contract and all work in progress with bond amounts and percentage completed.
(b) A sworn statement of the current financial condition of the bidder.
(c) Equipment schedule.
11. TEXAS STATE SALES TAX
This contract is issued by an organization which qualifies for exemption provisions pursuant to provisions
of Article 20.04 of the Texas Limited Sales, Excise and Use Tax Act.
The Contractor must obtain a limited sales, excise and use tax permit which shall enable him to buy the ma-
terials to be incorporated into the work without paying the tax at the time of purchase.
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p 12. PROTECTION OF SUBSURFACE LINES AND STRUCTURES
•" It shalt be the Contractor's responsibility to prosecute the work contemplated by the contract documents in
such a way as to exercise due care to locate and prevent damage to all underground pipelines, utility lines,
conduits or other underground structures which might or could be damaged by Contractor during the construc-
tion of the project contemplated by these contract documents. The City of Lubbock agrees that it will fur-
nish Contractor the location of all such underground tines and utilities of which it has knowledge. How-
ever, such fact shall not relieve the Contractor of his responsibilities aforementioned. All such under-
ground tines or structures cut or damaged by Contractor during the prosecution of the work contemplated by
this contract shall be repaired immediately by Contractor to the satisfaction of the City of Lubbock, Texas,
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at Contractor's expense.
w 13. BARRICADES AND SAFETY MEASURES
The contractor shall, at his own expense, furnish and erect such barricades, fences, lights and danger sig-
nals, and shalt take such other precautionary measures for the protection of persons, property and the work
a^ as may be necessary.
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The Contractor will be held responsible for all damage to the work due to failure of barricades, signs, and
lights to protect it, and when damage is incurred, the damaged portion shall be immediately removed and re-
placed by Contractor at his own cost and expense. The Contractor's responsibility for maintenance of barri-
cades, signs, and lights shalt not cease until the date of issuance to Contractor of City's certificate of
acceptance of the project.
14. EXPLOSIVES
The use of explosives will not be permitted unless written permission to do so is obtained by the Contractor
from the City. In all cases where written permission is obtained for the use of explosives, the Contractor
shalt assume full responsibility for all damage which may occur as's direct or indirect result of the blast-
ing. In addition, in all cases where explosives are authorized to be used, the Contractor shall use utmost
care so as not to endanger life or property and the Contractor shall further use only such methods as are
currently utilized by persons, firms, or corporations engaged in similar type of construction activity.
Explosive materials shall not be stored or kept at the construction site by the Contractor.
In all cases where explosives are to be used during the construction of the project contemplated by this
contract, it shalt be the duty of the Contractor to notify each utility company having structures (above or
below the ground) in proximity to the site of the work of Contractor's intention to use explosives, and such
notice shall be given sufficiently in advance to enable the companies to take such steps as they may deem
necessary to protect their property from injury. Such notice, however, shall not relieve the Contractor of
responsibility for any damage resulting from his blasting operations.
15. CONTRACTOR'S REPRESENTATIVE
The successful bidder shall be required to have a responsible local representative available at all times
white the work is in progress under this contract. The successful bidder shall be required to furnish the
name, address and telephone number where such local representative may be reached during the time that the
work contemplated by this contract is in progress.
16. INSURANCE
! The Contractor shalt not commence work under this contract until he has obtained all insurance as required
in the General Conditions of the contract documents, from an underwriter authorized to do business in the
State of Texas and satisfactory to the City. Proof of coverage shalt be furnished to the City and written
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notice of cancellation or any material change will be provided ten (10) days in advance of cancellation or
change. All policies shall contain an agreement on the part of the insurer waiving the right to subroga-
tion.
The insurance certificates furnished shall name the City as an additional insured and shall further state
that all subcontractors are named as additional insureds, or in the alternative, shall be accompanied by a
statement from the Contractor to the effect that no work on this particular project shall be subcontracted.
17. LABOR AND WORKING HOURS
Attention of each bidder is particularly called to the schedule of general prevailing rate of per diem wages
included in these contract documents. The wage rate which must be paid on this project shall not be less
than specified in the schedule of general prevailing rates of per diem wages as above mentioned. The
bidders' attention is further directed to the requirements of Article 5159a, Vernon's Annotated Civil
Statutes providing for the payment of the wage schedules above mentioned and the bidder's obligations there-
under. The inclusion of the schedule of general prevailing rate of per diem wages in these contract docu-
ments does not release the Contractor from compliance with any wage law that may be applicable. Construc-
tion work under this contract requiring an inspector will not be performed on weekends or holidays unless
the following conditions exist:
(1) The project being constructed is essential to the City of Lubbock's ability to provide the necessary
service to its citizens.
(2) Delays in construction are due to factors outside the control of the Contractor. The Contractor is
approaching the penalty provisions of the contract and Contractor can show he has made a diligent
effort to complete the contract within the allotted time.
Before construction work requiring an inspector is to be performed on weekends or holidays, the Contractor
must notify the Owner's Representative not less than three full working days prior to the weekend or holiday
he desires to do work and obtain written permission from the Owner's Representative to do such work. The
final decision on whether to allow construction work requiring an inspector on weekends or holidays will be
made by the Owner's Representative.
in any event, if a condition should occur or arise at the site of this project or from the work being done
under this contract which is hazardous or dangerous to property or life, the Contractor shall immediately
commence work, regardless of the day of the week or the time of day, to correct or alleviate such condition
so that it is no longer dangerous to property or life.
18. PAYMENT OF EMPLOYEES AND FILING OF PAYROLLS
The contractor and each of his subcontractors shall pay each of his employees engaged in work on the project
under this contract in full (less mandatory legal deductions) in cash, or by check readily cashable without
discount, not less often than once each week. The Contractor and each of his subcontractors engaged at the
site of the work shall not later than the seventh day following the payment of wages, file with the Owner's
Representative, or Engineer, a certified, sworn, legible copy of such payroll. This shall contain the name
of each employee, his classification, the number of hours worked on each day, rate of pay, and net pay. The
affidavit shall state that the copy is a true and correct copy of such payroll, that no rebates or deduc-
tions (except as shown) have been made, or will in the future be made from the wages paid as shown thereon.
The Contractor must classify employees according to one of the classifications set forth in the schedule of
general prevailing rate of per diem wages, which schedule is included in the contract documents.
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m The Contractor shall forfeit as a penalty to the City of Lubbock on whose behalf this contract is made, ten
dollars for each laborer, workman, or mechanic employed for each calendar day, or portion thereof, such
taborer, workman or mechanic is paid less than the wages assigned to his particular classification as set
forth in the schedule of general prevailing rate of per diem wages included in these contract documents.
19. PROVISIONS CONCERNING ESCALATOR CLAUSES
Proposals submitted containing any conditions which provide for changes in the stated bid price due to in-
creases or decreases in the cost of materials, labor or other items required for the project will be re-
jected and returned to the bidder without being considered.
20. PREPARATION FOR PROPOSAL
The bidder shall submit his proposal on forms furnished by the City. All blank spaces in the form shall be
correctly filled in and the bidder shall state the price both in words and numerals, for which he proposes
to do the work contemplated or furnish the materials required. Such prices shall be written in ink, dis-
tinctly and legibly, or typewritten. In case of discrepancy between the price written in words and the
price written in figures, the price written in words shall govern. if the proposal is submitted by an indi-
vidual, his name must be signed by him or his duly authorized agent. If a proposal is submitted by a firm,
association, or partnership, the name and address of each member must be given and the proposal signed by a
member of the firm, association or partnership, or person duly authorized. If the proposal is submitted by
a company or corporation, the company or corporate name and business address must be given, and the proposal
signed by an official or duly authorized agent. Powers of attorney authorizing agents or others to sign
proposals must be properly certified and must be in writing and submitted with the proposal. The proposal
shall be executed in ink.
Each proposal shall be enclosed in a seated envelope, addressed as specified in the Notice to Bidders, and
endorsed on the outside of the envelope in the following manner:
(a) Bidder's name
(b) Proposal for (description of the project).
Bid proposals may be withdrawn and resubmitted at any time prior to the time set for opening of the bids,
but no proposal may be withdrawn or altered thereafter.
21. BOUND COPY OF CONTRACT DOCUMENTS
Bidder understands and agrees that the contract to be executed by bidder shall be bound and include the fol-
lowing:
(a) Notice to Bidders.
(b) General Instructions to Bidders.
(c) Bidder's Proposal.
(d) Statutory Bond (if required). -
(e) Contract Agreement.
(f) General Conditions.
(g) Special Conditions (if any).
(h) Specifications.
(i) Insurance Certificates.
(j) All other documents made available to bidder for his inspection in accordance with the Notice to
Bidders.
If Plans and Specifications are too bulky or cumbersome to be physically bound, they are to be considered
incorporated by reference into the aforementioned contract documents.
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BID PROPOSAL
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BID PROPOSAL
BID FOR UNIT PRICE
PLACE: �Vf�13OC,L�, X
DATE: owr %Z,
PROJECT N0: 101-56
Proposal of 'isiz I. wtamycmlojU Cv. (hereinafter called "Bidder")
To the Honorable Mayor and City Council City of Lubbock, Texas (hereinafter called "Owner")
Gentlemen:
The Bidder in compliance with your invitation for bids for the construction of
15 -1 -RIP VANIA*
having carefully examined the plans, specifications, instructions to bidders, notice•to bidders and all other
related contract documents and the site of the proposed work, and being familiar with•all of the conditions
surrounding the construction of the proposed project including the availability of materials and labor, hereby
proposes to furnish all labor, materials, and supplies; and to construct the project fr. accordance with the
plans, specifications and contract documents, within the time set forth therein and at the prices stated in
Exhibit "A". "
The Bidder binds himself on acceptance of his proposal to execute a contract and any required bonds, according
to the accompanying forms, for performing and completing the said work within the time stated and for the prices
stated in Exhibit "A" of this proposal.
Bidder hereby agrees to commence the work on the above project on or before a date to be specified in a written
"Notice to Proceed" of the Owner and to fully complete the project within 120 (ONE HUNDRED TWENTY) consecutive
calendar days thereafter as stipulated in the specifications and other contract documents. Bidder hereby
further agrees to pay the owner as liquidated damages the sum of $250.00 (Two Hundred Fifty dollars) for each
consecutive calendar day in excess of the time set forth hereinabove for completion of this project, all as more
fully set forth in the general conditions of the contract.
Bidder understands and agrees that this bid proposal shall be completed and submitted in accordance with
Instruction No. 20 of the General Instructions to Bidder.
Bidder understands that the Owner reserves the right to reject any or all bids and to waive any formality in the
bidding.
The bidder agrees that this bid shall be good and may not be withdrawn for a period of thirty (30) calendar days
after the scheduled closing time for receiving bids.
The undersigned Bidder hereby declares that he has visited the site of the work and has carefully examined the
plans, specifications, and contract documents pertaining to the work covered by this bid, and he further agrees
to -commence work on or before the date specified in the written notice to proceed, and to substantially complete
the work on which he has bid; as provided in the contract documents.
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Enclosed with this proposal is}—
i3vt�Fers—f'8 ) or a Proposal Bond in the sum ofj57
ollars (S ),
which it is agreed shall be collected and retained by the Owner as
liquidated damages in the event the proposal
Is accepted by the Owner and the undersigned fails to execute the
necessary contract documents and the required
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bond (if any) with the Owner within ten (10) days after the date of receipt of written notification of
acceptance of said proposal; otherwise said check or bond shall be returned to the undersigned upon demand.
.
Bidder understands and agrees that the contract to be executed by
Bidder shall be bound and include all contract
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documents made available to him for his inspection in accordance with the Notice to Bidders.
—
Contractor
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(Seal if Bidder is a Corporation)
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EXHIBIT A, PAGE 1
BID PROPOSAL
BID FOR UNIT PRICE CONTRACTS
Item Quantities Total
No. & Units Description of Item & Unit Price Amount
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2.
3.
22,000 S.Y. 2" compacted T.H.D., Type "C"., A.C. Paving,
including subgrade preparation, 3" asphalt
stabilized graded gravel, base, 6" caliche
sub -base, prime and tack coat, 2' wide caliche
shoulders, associated blading of ditches, and
1:2 dilute emulsion treatment at a rate of 0.10
gallon per square yard within ten (10) days of
the placement of the A.C. surface, complete in
place, per square yard:
�1-EVEN DOLLARS ($
PON Y CENTS $ Z50.".
38 S.Y. Resurfacing: 1-1/2" compacted T.H.D., Type "C
A.C. Paving with Brownwood Rock, including re-
moval and disposal of existing asphalt surface,
reprocessing and compacting existing caliche
base, prime and tack coat and 1:2 dilute emul-
sion treatment at a rate of 0.10 gallon per
square yard within ten (10) days of the placement
of the A.C. surface, complete in place,"per square
yard
I WZEW DOLLARS
-1-44 I01 -V CENTS $ 1z6.4c
18,630 S.Y. Scarifying, removal and stockpiling existing
paving and base at location shown on the plans,
complete, per square yard:
NE DOLLARS ($ I Z )
'iWENTOY -F1V4, CENTS $ZAZ$75
EXHIBIT A, PAGE 2
BID PROPOSAL
BID FOR UNIT PRICE CONTRACTS
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Item Quantities
Total
7.
No. & Units
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Description of Item & Unit Price Amount.,,
4. 100 C.Y.
Three (3) sack cement stabilized caliche to be
used in backfill of subgrade that cannot be
—
stabilized with base material at locations
designated and approved by the Engineer,
complete in place, per cubic yard:
FTy DOLLARS ($ 50.00 )
n!o CENTS $ Rocem-7
5. 12 S.Y.
4" Concrete (3000 PSI/28 Day) driveway adjust-
_
ment, as directed by the Engineer, complete in
place, per square yard:
S/SC?CG/� DOLLARS ($ /G.ZS )
-.
w�1�NTy-L1VE CENTS $ IV,!r
6. 200 S.Y.
Asphalt parking lot or driveway adjustment
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including subgrade preparation, 6" of caliche
_
base, prime and tack coat, and 1-1/2" compac-
ted T.H.D., Type "D", A.C. Paving, complete
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in place, per square yard:
y
SAX DOLLARS ($
L
SEV EIi'Y-1%1Vj-r CENTS $ 16 —
L
7. 135 L.F.
Corrugated metal pipe culverts including remo-
val of existing pipe, placement of new pipe
associated couplings and hardware, and back-
L
filling, complete in place, per linear foot:
-7vi y-ICOUZL DOLLARS ($ Z4.00 )
NO CENTS
EXHIBIT A, PAGE 3
BID PROPOSAL
BID FOR UNIT PRICE CONTRACTS
Item Quantities Total
No. & Units Description of Item & Unit Price Amount
--------------------------------------------------
8. 385 S.Y. Gravel driveway adjustment including subgrade
preparation, 6" of caliche base, and grade 3
aggregate loose on surface, complete in place,
per square yard:
�1 +2EE DOLLARS
N/N�T1-F/VE CENTS g
TOTAL BID (Items I through 8)
.x
3 283.518.6 c
(This page left blank intentionally)
,t..
�pEUTY4y4 -
UNITED STATES FIDELI o . UARANTY COMPANY
G 'teat
fA St k ompany)
BID BOND
BONDNUMBER ..... .................................................. ............................... _
KNOW ALL MEN BY THESE PRESENTS:
THAT.................._...Kerr Construction...Companx.......»...... ................ »........................ „......... ...„... ................... .............. ........ .....
........................... of ..................»Lubbock
............................................................................................................................................................. as Principal , and UNITED STATES FIDELITY AND
GUARANTY COMPANY, a Maryland corporation, as Surety, are held and firmly bound unto.........................................................................................
City of Lubbock, Lubbock, Texas
.................................................................................................................................................................................................................................................
as Obligee, in the full and just sum of ...... ........... E i vq...Pl<t .m,mt.Qf.... JA ... Erlru....�.5a11......... .»........................................ ..............
............................... .......... ».... ................................................................................... ...................... »...................................... »...... .......................... Dollars,
lawful money of the United States, for the payment of which sum, well and truly to be made, we bind ourselves, our heirs, executors,
administrators, successors and assigns, jointly and severally, firmly by these presents.
WHEREAS, the said Principalis herewith submitting its proposal for 82nd Street Strip Paving Improvements
THE CONDITION OF THIS OBLIGATION is such that if the aforesaid Principal shall be awarded the contract the said Principal will, within the
time required, enter into a formal contract and give a good and sufficient bond to secure the performance of the terms and conditions of
the contract, then this obligation to be void; otherwise the Principal and Surety will pay unto the Obligee the difference in money between
the amount of the bid of the said Principal and the amount for which the Obligee legally contracts with another party to perform the work
if the latter amount be in excess of the former, but in no event shall liability hereunder exceed the penal sum hereof.
Signed, sealed and delivered .........Oc tober 12, 1989
lDate)
.Kers... Con*1.E iAr,11,9 n.... tSEAU
................................................................................................................. .By........ �... ............
......... ....... iSEAU
UNITED STATES FIDELITY AND GUARANTY COMPANY
.................................................................................................
ohn V. Shropshire Attornevin•fact
G.. '/ �';�i+A r' J(.•;' :.5:�� i�a`i� - 5G' IIYd r ��•, ,`F` V f. ��{";wr. ff,, <ri fi��.tt ?i 4Vtttt. i'.'��}r.+iL\W of _+�''�` � 1.. '.`.`��
CERTIFIED COPY
GENERAL POWER OF ATTORNEY
No. »....... Zr'.7.4........................
Knit all Men by these Presents:
That UNITED STATES FIDELITY AND GUARANTY COMPANY, a corporation organized and existing under the laws of the
State of Maryland, and having its principal office at the City of Baltimore, in the State of Maryland, does hereby constitute and appoint
.- John V. Shropshire
of the City of Lubbock , State of Texas
its trite and lawful attorney in and for the State of Texas •
for the following purposes, to wit:
To sign its name as surety to, and to execute, seal and acknowledge any and all bonds, and to respectively do and perform any and
all acts and things set forth In the resolution of the Board of Directors of the said UNITED STATES FIDELITY AND GUARANTY
COMPANY, a certified copy of which is hereto annexed and made a part of this Power of Attorney: and the said UNITED STATES
FIDELITY AND GUARANTY COMPANY. through us, its Board of Directors, hereby ratifies and confirms all and whatsoever the said
John V. Shropshire
may lawfully do in the premises by virtue of these presents.
In Witness whereof, the said UNITED STATES FIDELITY AND GUARANTY COMPANY has caused this instrument to be
sealed with in corporate seal, duly attested by the signatures of its rice -President and Asmstant Secretary, this 25;5 day of
August . A. D. 19 Oct
• UNITED STATES FIDELITY AND GUARANTY COMPANY.
(Signed) By ___ 1.t,_•�'t � in
� (��� YicrPresideru.
(Signed) Kenneth S. Teeple.
.lssiatant SecruarY.
STATE OF MARYLAND.
BALTIMORE CITY. ars
On this 251b day of August . A. D. 19 59 , before me personally came
L. M. Smith . Vice -President of the UNITED STATES FIDELITY ND GUARANTY
COMPANY and Kenneth S. Teeple , Assistant Secretary of said Company, with both of
whom I am personally acquainted, who being by me severally duly sworn, said that they resided is the City of Baltimore, Maryland;
that they, the said L. M. Smith and Kenneth S. Teeple were respee ysly
the Vice -President and the Assistant Secretary of the raid UNITED STATES FIDELITY AND GUARANTY COMPANY. the cor.
poration described in and which executed the foregoing Power of Attorney; that they each knew the seal of said corporation; that the
seal affixed to said Power of Attorney was such corporate seal, that it was so fixed by order of the Board of Directors of said corpora.
tion, and that they signed their names thereto by like order as Vice -President and Assistant Secretary. respectively, of the Company.
My commission expires the first Monday in May, A. D. 1961.
(SEAL) (Signed) Anne M. O'Brien
STATE OF MARYLAND. Notary Puh&i
BALTIMORE CITY, Sct
I. James F. Carney . Clerk of the Superior Court of Baltimore City, which Court is a
Court of Record, and has a seal, do hereby certify that Anne M. O'Brien ..Esquire, before
whom the annexed affidavits were made, and who has thereto subscribed his name, was at the time of so doing a Notary Public of the
State of Maryland, In and for the City of Baltimore, duly commissioned and sworn and authorized by law to administer oaths and take
acknowledgments, or proof of deeds to he recorded therein. I further certify that I am acquainted with the handwriting of the said
Notarn and verily believe the signature to be his geaaine signature
In Testimony IYhereol, I hereto set my hand and affix the seal of the Superior Court of Baltimore City, the same being a Court
of Record, this 25tp day of August . A. D. 1959
(SEAL) (Signed) James F. Carney
l8 3 (7.at7
Clerk e/ the Superior Corot o/ Baltimore City.
�,,,y
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i° tsp tptI mp ao 'asomlilNH 3o figs agp of [u■dmo3 agp ;° sago mp it P(aq Pa* Pa[[t° AluP 'tasdmoa p!■s ;o ssoioas;Q/3 W4OH
aqi jo lmiaam npi2as s is paidops aolinjoSag s jo aousnsmd a; uasss ssr tausoiiV jo scrod PINS isgl tis °Sagan; °P I PW —
'iaa$a Pu* 0°sO31[a3 at ttm s4 Pas pailoAas aaaq saaaa nq taguous ;o scrod gocgA Vjo;
pe ulaiagi it spuoq a!" as MTK 2ugmodma paw Suppogin■ ' S exa,L 13100ggnj
aatusdO-ZqS *A uuor of LusdmoD p!n tq _.
sass! taa:oue ;o Barad Isa!uasp jo tdoa >,ao pus ags'l; slasosaoj aqi si tu. uao tq=q op lAxvasm) A,LHVtIVno
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-sum aqi ;o sagpga ;o amiss aqg a! 2UPPAas
so 'lggnlsisapgm so hgontlndns 'uopslglgo 'oaarssuloaas 'paoq gans tas at so; papssosd aq [■m gasgr Sgolicpuoa tus so luggltaw ;o
lulop jou so lalop aqi so; paaogigpuoo 'saaamwgA% anp■d■a us p� tnt at 'sasaosisgr aositzsQtlso so aos3 posh impo so [isltdptaam
'isamul 'soggo 'tpoq Guontsodsoa %nosrad so umod [gn so; so tq ';o uopoaiosd so ,4!mon aqi toj papmas 10 pal9 'paidaaos 'panpaal
'casts "n 'opsin 'pain=a aq of paiigusad so pagnbas 'parous aq ""Wagio so ltdplunm 'Pool 'saorgo to cargo 'con. Wz!v■!s° 'tPoq
'pstoq taw jo uonanslp so aatiassd 'smoisna %mpso %uonwpUW 'alts aqi tq so 'puslpunojraM ;o tuolo3 aq; jo so spsasj jo aogalmo(l —
aqi jo saautsosd aqi jo so ainS paipa aqi jo Lsou=,L so alas tut jo so sales Paisun aql jo ainmS tut tq so 'a wagio so I■djolunm
'x■I tq t■m so an galgr 'augss aqi )o lagpn ;o amiss aqi at lnsyitas so ssusilsuapun 'suogtttndsis 'sao.1 Iqo 'saauwz!uloaas 'Spaoq
IV pas ta■ jo saotgspaoo aqi aatasssn! pus ainaa:a of naa!■ so iaa!■ so 'ia■;•ap"ausolgs so taasoiis sit a paw aumu all al l*W
pas 'p—p rsl tq —
so 'ssuspaaa°gd to saopas us at patissuad ao paggnbas 'slggpl■isapan pas ■paoq lasaatuts■n2 so Rut
inoaza put saptlod aouunsa! u■gi
=To siotsguoo jo saousauojsad agp lagaalimmS 'isnsi n■sud so aslgnd jo suoIllsod lusploq suossad jo [islapq aqi lasaaiusisn! Sia■si
•aoa us Pus Aug saegap pow ainaaza of 'io■ nt s■ pas aagtu n! a! 'Ausdtuo:) p!n jo sguals so iaa!■ so 'io■j•us_qtausoiit so dausaus ss
saos»d so aossad ta■ iulodds of 'I�as aiuodsoa n! span 'alsslaaaS tusissssV nI ;o aao so ts■iasaaS sl! qiw aosiagm(aoa m naaPIagd
aalA sit }o »gpla so taapgsasd ht sarodaga pas azssogins 'cop tgagaq it pas 'op tatdgao3 *!qi isgi 'paap:ay $! '4—
'PaslpanojraRl;o [uoloa sip of PUT sp■urJ;o aolunao(l sip ;0
aoau►osd mp al pas saisis Palm aqi jo alsolto—.L aqi u! pow 'pusltss;sl awgi sagio ainS ul amNu sit m put a so; ias of tusoggn■ pas
scrod glsr stausoiis pas goals iusodd■ [asdmo3 ssgi isgi Saa"nq ;o aopassassi Iwmoa aqi so; tisssaoaa Itis 'saaiaym PY.L —
NOLL(l'IOS31i 30 JUM
PAYMENT BOND
-13-
(This page left blank intentionally)
s
STATUTORY PAYMENT BOND PURSUANT TO ARTICLE 5160
OF THE REVISED CIVIL STATUTES OF TEXAS
' AS AMENDED BY
- ACTS OF THE 56TH LEGISLATURE, REGULAR SESSION,
1959
Company
KNOW ALL MEN BY THESE PRESENTS, that Kerr Construction /. (hereinafter called the Principat(s), as
t Principat(s), and United States Fidelity h Guaranty Company
ok (hereinafter called the Surety(s), as Surety(s), are held and firmly bound unto the City of Lubbock (hereinafter
C called the Obligee), in the amount of **** Dollars ($285,5187kFewful money of
the United States for the payment whereof, the said Principal and Surety bind themselves, and their heirs, adminis-
trators, executors, successors and assigns, jointly and severalty, firmly by these presents. _
WHEREAS, the Principal has entered into a certain written contract with the Obligee, dated the 2 4th day of
October 193c to
r Bid #10356 - 82nd Street Strip Paving Improvements
and said Principat.under the taw is required before commencing the work provided for in said contract to execute a
! k bond in"thi amount of said contract which contract is hereby referred to and made a part hereof as fully and to the
same extent as if copied at length herein.
t NOW, THEREFORE, THE CONDITION OF THIS OBLIGATION IS SUCH, that if the said Principal shall pay all claimants
supplying labor and material to him or a sub -contractor in the prosecution of the work provided for in said con-
tract, then, this obligation shall be void; otherwise to remain in full force and effect;
j;
PROVIDED, HOWEVER, that this bond is executed pursuant to the provisions of Article 5160 of the Revised
Civil Statutes of Texas as amended by Acts of the 56th Legislature, Regular Session, 1959, and all liabilities on
+*" this bond shalt be determined in accordance with the provisions of said Article to the same extent as if it were
t copied at length herein.
****Two Hundred Eighty-five Thousand, Five Hundred
Eighteen and 65/100 --------------------Dollars
BOND CHECK
BEST RATING
LICENSED IN TOW
BATE //L �`! 6Y
r
t -14-
IN WITNESS WHEREOF, the said principal (s) and Surety (s) have signed and sealed this instrument this
24th day of October 1999
United States Fidelity & Guaranty Co.
rety
B
Principal 1;P
o V. Shrops i re, torney-Fact
By:
*By.
(title)
By:
(Title)
By:
(Title)
The undersigned surety company represents that it is duly qualified to do business in Texas, and hereby des-
ignates an agent resident in Lubbock County to whom.any.requisite notices may be delivered and
on whom service of process may be had in matters arising out of such suretyship.
**The Shropshire Agency, Inc. United States Fidelity & Guaranty Co. ~
Surety
(Title)
John V. Shropshire, Attorney-in-Fact
Approved as to form:
Cityof Lubbock 1
By:
City Attorney
*Note: If signed by an officer of the Surety Company there must be on file a certified extract from the by-laws
showing that this person has authority to sign such obligation. If signed by an Attorney in Fact, we must have copy
of power of attorney for our files.
-15-
r
PERFORMANCE BOND
-16-
No Text
P"
r
d STATUTORY PERFORMANCE BOND PURSUANT TO ARTICLE 5160
OF THE REVISED CIVIL STATUTES OF TEXAS AS
AMENDED BY
4
ACTS OF THE 56TH LEGISLATURE, REGULAR SESSION 1959
Construction Company
KNOW ALL MEN BY THESE PRESENTS, that Kerr / (hereinafter called the Principal(s), as PrincipaL(s), and
United States Fidelity & Guaranty Company
(hereinafter called the Surety(s), as Surety(s), are held and firmly bound unto the City of Lubbock (hereinafter
called the Obligee), in the amount of *** * Dollars (6 2 8 5=518•f5 awful money of the
r., United States for the payment whereof, the said Principal and Surety bind themselves, and their heirs, administra-
tors, executors, successors and assigns, jointly and severally, firmly by these presents.
WHEREAS, the Principal has entered into a certain written contract with the Obligee, dated the24 thday of
'~ October 19�3 to
t
Bid #10356 - 82nd Street Strip Paving Improvements
and said principal under the law is required before commencing the work provided for in said contract to execute a
bond in the amount of said contract which contract is hereby referred to and made a part hereof as fully and to the
same extent as if copied at length herein.
NOW, THEREFORE, THE CONDITION OF THIS OBLIGATION 1S SUCH, that if the said Principal shall faithfully per-
form the work in accordance with the plans, specifications and contract documents, then this obligation shall be
void; otherwise to remain in full force and effect.
PROVIDED, HOWEVER, that this bond is executed pursuant to the provisions of Article 5160 of the Revised
Civil Statutes of Texas as amended by Acts of the 56th Legislature, regular session 1959, and all liabilities on
this bond shall be determined in accordance with the provisions of said article to the same extent as if it were
copied at length herein.
IN WITNESS WHEREOF, the said Principal (s) and Surety (s) have signed and sealed this instrument this 24th
day of October , 19 89 .
United States Fidelity & Guaranty Company
Sure
r By.
a
ohn V. Shropshi e, Attorney -in -Fact
****Two Hundred Eighty-five Thousand, Five Hundred
Eighteen and 65/100 ------Dollars
�•» BOND CHECK
BEST RATING -A
LICENSED IN TEXAS
r
DATE - Z-47BY
-17-
Kerr Construction Company
Principal
By:
(Title)
*By:
(Tit -Ce)
By:
(Title)
The undersigned surety company represents that it is duly qualified to do business in Texas, and hereby
designates * ** an agent resident in Lubbock County to whom any requisite notices may be delivered and on
whom service of process may be had in matters arising out of such suretyship.
***The Shropshire Agency, Inc. United States Fidelity & Guaranty Co.
Surety
?hropshi"ire,
(Ttle)John V. Attorney -in -Fact
Approved as to Form
City of Lubbock
By: �
City Attorney
*Note: If signed by an officer of the Surety Company, there must be on file a certified extract from the by-laws
showing that this person has authority to sign such obligation. If signed by an Attorney in Fact, we must have copy
of power of attorney for our files.
r.
CERTIFIED COPY
GENERAL POWER OF ATTORNEY
No.......... 7 P.'? 4 ........................
Kmw all Mea by there Preseatsr
A That UNITED STATES FIDELITY AND GUARANTY COMPANY. a corporation organized and existing under the laws of the
State of Maryland, and having its principal office at the City of Baltimore, in the State of Maryland, does hereby constitute and appoint
John V. Shropshire
Lubbock Texas
of the
Qty of . State of ,
its true and lawful attorney in and for the State of Texas
P"
for the following purposes, to wit:
To sign its name as surety to, and to execute, seal and acknowledge any and all bonds, and to respectively do and perform any and
all acts and things set forth in the resolution of the Board of Directors of the said UNITED STATES FIDELITY AND GUARANTY
COMPANY, a certified copy of which Is hereto annexed and made a part of this Power of Attorney; and the said UNITED STATES
FIDELITY AND GUARANTY COMPANY, through us, its Board of Directors, hereby ratifies and confirms all and whatsoever the said
John V. Shropshire
may lawfully do in the premises by virtue of these presents.
In Witness Whereof, the said UNITED STATES FIDELITY AND GUARANTY COMPANY has caused this instrument to be
sealed with its corporate seal, duly attested by the signatures of its Vice -President and Assistant Secretary, this 231,11 day of
August . A. D. 19 59
UNITED STATES FIDELITY AND GUARANTY COMPANY.
(Signed) By _I"J1. Sn' t,.k _...
lice -President.
(SEAL)
(Signed) Kenneth S Teeple
Assistant Secretary.
STATE OF MARYLAND,
BALTIMORE CITY, ss'
On this 23W day of August , A. D. 19 59 . before me personally came
L. M. Smith , Vim -President of the UNITED STATES FIDELITY AND GUARANTY
COMPANY and Kenneth S. Teeple . Assistant Secretary of said Company, with both of
whom I am personally acquainted, who being by me severally duly sworn, said that they resided in the City of Baltimore, Maryland;
that they, the said L. M. Smith and Kenneth S. Teeple were respectively
the Vice -President and the ,Assistant Secretary of the said UNITED STATES FIDELITY. AND GUARANTY COMPANY, the cor.
poration described in and which executed the foregoing Power of Attorney; that they each knew the seal of said corporation; that the
seal affixed to said Power of Attorney was such corporate seal, that it was so fixed by order of the Board of Directors of said corpora.
tion, and that they signed their names thereto by like order as Vice -President and Assistant Secretary, respectively, of the Company.
My commission expires the first Monday in May, A. D. 1961.
(SEAL) (Signed)
s
.Ane M. O'Brien_
_ Notary Public.
STATE OF MARYLAND,
BALTIMORE CITY, Sct
I. James F. Carney , Clerk of the Superior Court of Baltimore City, which Court is a
Court of Record, and has a seal, do hereby certify that Anne M. O'Brien , Esquire, before
whom the annexed affidavits were made, and who has thereto subscribed his name, was at the time of so doing a Notary Public of the
State of Maryland, in and for the City of Baltimore, duly commissioned and sworn and authorized by law to administer oaths and take
acknowledgments. or proof of deeds to be recorded therein. I farther certify that I am acquainted with the handwriting of the said
Notary, and verily believe the signature to be his genuine signature.
In Testimony Whereof, I hereto set my hand and affix the seal of the Superior Court of Baltimore City, the same being a Court
of Record, this 25tb day of August . A. D. 1959
(SEAL)- (Signed) James F. Carney
Ckrk e/ fide Superior Court o/ Baltimore City.
IS S t7 -M w
•tsatalaas tm�trtrry
696
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9unaam pns;o amulm sqt m pop== n ;oasagt sloge& aqt Pas 'uonnlom
-PPn io Ad- taassoo pin anst s q fmoaawl sqt tsgt pus •taastd stA sm oura ;o pssog aqt ;o smaonb s fanaam SPP" Is '0161 *nf
io t*P gilt aqt no 'uoaltlsfi 3o AD aqt a; tnsdmo3 aqt ;o aag;o aqt to Plai Pus Pa11a 4nP 'tasdaurJ piss ;o smtau.a Io Pnog
Gqt 3o funaam njaw t is patdops aotmlosu s ;o aaasnund m WA12 t" tamozzy ;o aawod PPn imp 4n= ngtmi op I puY
•taaga pas 0uo31N3 ai lim sf Pus p23loAas aaaq aaAan smq tansotts ;o aaxod gatgr 'qlM
toa acantil n spaoq tan of MTU 2q=Aodma pas SuMngzns ' wexay `XooggnZ ;a
ajTgsdo.xgS *A cruor of tusdmo•J Plss tq
aaAl! tautotts ;o aaMod lsulluo aqt ;o Ado* taasma put snit 'I[n; sln
sl t08uo; aqt ssgt t;nm tquaq op 'AxvdKoo X.LNvuvno
Gmv mn3QI3 suvjs Q3.LINQ otp ;o Lsnuaas taw -v as• 'I
lAat'LTM 'r '3
sass aqt ;o XMFa ;o sinus aqt al lalgttas
m •8m:[stsapan m •aons[ndlis 'ttolts3i1ga 12ausslv3oa2x 'paoq yans tui at m; papuoad aq tsm ga:gw suoltlpaoo las ao lalgttns ;o
tamp ton m !atop aq; m; panonlPnoa •saaaostsge► snpadsa l[s pas tns ul •aaAaostsgA� aonsauseao m aontlaoess ngto to ygsdlalanm
'tasatnl 'aosgo 'tpoq 'aonsmdma 'saoes,d m aossad has m; .m tq •;o not
taatosd m llamas stp Sol pop=mr so PK 'patdaaas 'puapuat
'naA>e 'aaln bpsm 'patnaa:a sq at pattlasad m pasmbu •pawolls aq bstxsagto mpdo;unm ';sao; �saaglo m aag;o 'non4slaslia 'tpoq
•paeog has ;o aonuaelp m aaltasA 'smotstw 'wpm 'saonslalaa 'slag aqt r(q m 'patlPunop-M ;o taolo3 aqt ;o m sp-vD ;o aolmmoCl
mp ;o suuuatd aqt ;o m stets Pamir 1 Gqt ;o Lmtgsa,L m atng tui ;o m slits Pniun otp to atoms tam tq m 'asusaagto m lsdpMnm
'rsl tq tem m an gan['r burn aqt ;o aagtn ;o salsa aqt at Sul Aug so Mazgstrapun 'suo.1 .ts wo. . qo •saaszlaloau 'spaoq
Rs pas taw ;o suonlpaoa aqt eatasasn2 pus maar+ of smals m taass m 'taw;-ul-staaaotts m taasous sir ss pus Gaza al Iq `osw
pas 'Pa—lp Awl tq
m 'saucpaaaoad m saonas its al pattlasad m pasmbu 'siunlstsapan pas spaoq la.aatuusn! m lurtnaasa pas snm llod aaussneasgt
aagto gasstnoa ;o aaasaso;sad aqt lalaatasasa! ysnat atsArad m aggnd ;o saonlsod Sur
pioq saouad ;o ttgapg Gqt 2a=aatusssn8 gasst
•uoa 1p pus tui aaAgap pus atnaa:a of yaw nl is pus aasu hl al •tusdaoD plss ;o stuasa ao tuaee to •tas;•ul-stauaotu m tausous to
saowd m crowd las talodds of `!sae nuodsoa pl aapan 'aunaaaas tastmw`t hl ;o Guo m tattasaas sit gtu► nonaunfaoa ul smaplaud
—!A 931 10 sagtla m mapl*asd til n,*odaa pus muogms 'sop tquaq a pas 'op tumdao:) slgt tsgt 'paolosou n eq 'slolalay,t
•runpanopaatl ;o tuolo: alp al pus spear,) ;o amulmoQ aqt ;o
aouuoad mp al pus stns Payun ov ;o slmtusa l• eqt at Pat 'PUV[AuW ump aagto stns al ansa stl a< pus it ao; tat of tusogms pas
aawod qua► stausous pas s3aa8m tutodds tusdao:) slgt tsgt saulsnq ;o aopossaest lsntaage aqt m; Anmoau et a Maaaaym my,t
NOLLflIK) B}I 30 AdO3
00m,
CERTIFICATE OF INSURANCE
-19-
(This page left blank intentionally)
3 ISSUE DATE (MM/DD/YY)
MrIM1t11e � e x :
... �,,. �,.,• s ° {€ef�� ` .. 10-30-89 ._
.'"^"�1. 1"5•`°F'.' .. ,>s r .b , wF..Sm.'�'•'2'%fi,',�q{e' .' A'YE i .ks2euY; 16 �rf.!• nN�Y SSri �19
PRODUCER THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS
The Shropshire Agency, Inc.
POLICY EFFECTIVE
DATE (MM/DD/YY)
NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AMEND,
EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW
P. 0. Box 10428
GENERAL LIABILITY��"J
'A
�X
Lubbock, Texas 79408
L LIABILITY
COMPANIES AFFORDING COVERAGE
F 806-763-7311
I CODE SUB -CODE
COMPANY
LETTER A Uni ted States Fidel i ty Guaranty Co.
i.. Kerr Construction Com an
P. 0. BOX 888 p y
1CGI1233558600
COMPANY B
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ICOMPANY
LETTER E
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THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD
INDICATED, NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS
CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS,
EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS.
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IIPTION OF OPERATIONS/LOCATIONS/YEMCLEBIRESTRtCTION3/SPECIAL ITEMS
Re: Bid #10356 - 82nd Street Strip Paving Improvements
SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE
City of Lubbock EXPIRATION DATE THEREOF, THE ISSUING COMPANY WILL ENDEAVOR TO
MAIL LQ_ DAYS WRITTEN NOTICE TO THE CERTIFICATE HOLDER NAMED TO THE
Lubbock, Texas LEFT, BUT FAILURE TO MAIL SUCH NOTICE SHALL IMPOSE NO OBLIGATION OR
I LIABILITY OF ANY KIND UPON THE COMPANY, ITS AGENTS OR REPRESENTATIVES.
a
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f CERTIFICATE OF INSURANCE
TO: CITY OF LUBBOCK DATE:
Type of
Lubbock, Texas Project:
f THIS 1S TO CERTIFY THAT (Name and Address of Insured) is, at the date of this certificate, in-
sured by this Company with respect to the business operations hereinafter described, for the types of insurance and
in accordance with the provisions of the standard policies used by this Company, the further hereinafter described.
Exceptions to standard policy noted hereon.
TYPE OF INSURANCE
Policy No. Effective Expires Limits of Liability
Workmen's
Compensation
Owner's Protec-
Per Person
$
tive or Contin-
Per Occurrence
$
gent Liability
--------------------------------------------------------------------------------------------------------------------
Property Damage
$
Contractor's
Per Person
";
$
Protective or
Per Occurrence
S
Contingent
Property Damage
$
Liability
--------------------------------------------------------------------------------------------------------------------
Title
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Per Person
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Automobile
Per OccurretJ�ce
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--------------------------------------------------------------------------------
Property Damage
S
Comprehensive
-------------------
General Liability
--------------------------------------------------------------------------------------------------------------------
$
Umbrella Liability
$
----------------------------------------------------------------------------------------------
The foregoing Policies (do) (do not) cover all sub -contractors.
- -------------------
Locations Covered
DESCRIPTION of Operations Covered
The above policies either in the body thereof
or by appropriate endorsement provide that they may not be changed or
canceled by the insurer in less than the legal
time required after the insured has received
written notice of such
�r► change or cancellation, or in case there is no
legal requirement, in less than five days in
advance of cancellation.
FIVE COPIES OF THIS CERTIFICATE
MUST BE SENT TO THE OWNER.
(Name of
Insurer)
$
I
By:
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i
Title
I
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I
CONTRACT
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1
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1
CONTRACT
STATE OF TEXAS
COUNTY OF LUBBOCK
THIS AGREEMENT, made and entered into this 24th day of October, 1989, by and between the City of Lubbock,
County of Lubbock, State of Texas, acting by and through B.C. McMinn, Mayor, thereunto authorized to do so,
hereinafter referred to as OWNER, and Kerr Construction Company
of the City of LUBBOCK, County of LUBBOCK and the State of TEXAS, hereinafter termed CONTRACTOR.
WITNESSETH: That for and in consideration of the payments and agreements hereinafter mentioned, to be made and
performed by the OWNER and under the conditions expressed in the bond bearing even date herewith (if any) the CON-
TRACTOR hereby agrees with OWNER to commence and complete the construction of certain improvements described as fol-
lows:
BID # 10356 - 82ND STREET STRIP PAVING IMPROVEMENTS FOR THE AMOUNT OF $285,518.65
and all extra work in connection therewith, under the terms as stated in the contract documents and at his (or
their) own proper cost and expense to furnish all materials, supplies, machinery, equipment, tools, superintendence,
labor, insurance and other accessories and services necessary to complete the said construction in accordance with
the contract documents as defined in the General Condition of Agreement.
The CONTRACTOR hereby agrees to commence work within ten days after the date written notice to do so shall have
been given to him and to substantially complete same within the time specified in the contract documents.
The OWNER agrees to pay the CONTRACTOR in current funds for the performance of the contract in accordance with
POO the proposal submitted therefore, subject to additions and deductions, as provided in the contract documents and to
make payment on account thereof as provided therein.
IN WITNESS WHEREOF, the parties to these presents have executed this agreement in Lubbock, Lubbock.County,
I Pm Texas in the year and day first above written.
l
T: _ / CI TX OF LUBBOCK, TEXAS (OWNER) ,
y.j (1.04 `jjnn�I
' Secre ry MAYOR
APPR AS TO CONTENT•
Z
APPROVED AS TO FORM:
ATT
Secretary
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Kerr Construction Company
CONTRACTOR
By:
TITLE: <.
COMPLETE ADDRESS:
P.O. Box 888
Lubbock, Texas 79408
(This page left blank intentionally)
GENERAL CONDITIONS OF THE AGREEMENT
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r
GENERAL CONDITIONS OF THE AGREEMENT
1. OWNER
Whenever the word Owner, or the expression Party of the First Part, or First Party, are used in this con-
tract, it shalt be understood as referring to the City of Lubbock, Texas.
2. CONTRACTOR
Whenever the word Contractor, or the expression Party of the Second Part, or Second Party, is used, it shall
be understood to mean the person, persons, co -partnership or corporation, to -wit: Kerr Construction Co. ,
who has agreed to perform the work embraced in this contract, or to his or their legal representative.
3. OWNER'S REPRESENTATIVE
Whenever the word Owner's Representative or representative is used in this contract, it shalt be understood
as referring to LARRY D. HERTEL, CITY ENGINEER, STREETS/DRAINAGE ENGINEERING, City of Lubbock, under whose
supervision these contract documents, including the plans and specifications, were prepared, and who will
inspect constructions; or to such other representative, supervisor, or inspector as may be authorized by
said Owner to act in any particular under this agreement. Engineers, supervisor or inspectors will act for
the Owner under the direction of Owner's Representative, but shall not directly supervise the Contractor or
men acting in behalf of the Contractor.
4. CONTRACT DOCUMENTS
The contract documents shalt consist of the Notice to Bidders, General Instructions to Bidders, Proposal,
.Signed Agreement, Statutory Bonds (if required), General Conditions of the Agreement, Special Conditions of
the Agreement (if any), Specifications, Plans, Insurance Certificate, and all other documents made available
to Bidder for his inspection in accordance with the Notice to Bidders.
5. INTERPRETATION OF PHRASES
Whenever the words "Directed," "Permitted," "Designated," "Required," "Considered Necessary," "Prescribed,"
or words of like import are used, it shalt be understood that the direction, requirement, permission, order,
designation or prescription of the Owner's Representative is intended; and similarly, the words "Approved,"
"Acceptable," "Satisfactory," or words of like import shall mean approved by or acceptable or satisfactory
to the Owner's Representative.
Whenever in the Specifications or drawings accompanying this agreement, the terms of description of various
qualities relative to finish, workmanship, or other qualities of similar kind which cannot, from their na-
ture, be specifically and clearly described and specified, but are necessarily described in general terms,
the fulfillment of which must depend on individual judgment, then, in all such cases, any question of the
fulfillment of said Specifications shall be decided by the Owner's Representative, and said work shall be
done in accordance with his interpretations of the meaning of the words, terms, or clauses defining the
character of the work.
6. SUBCONTRACTOR
The term Subcontractor, as employed herein, includes only those having a direct contract with the Contractor
for performance of work on the project contemplated by these contract documents. Owner shalt have no re-
sponsibility to any Subcontractor employed by Contractor for performance of work on the project contemplated
by these contract documents, but said Subcontractors will look exclusively to Contractor for any payments
due Subcontractor.
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7. WRITTEN NOTICE
Written notice shalt be deemed to have been duly served if delivered in person to the individual or to a
member of the firm or to an officer of the corporation for whom it is intended, or if delivered at or sent
certified mail to the last business address known to him who gives the notice.
B. WORK
Unless otherwise stipulated, the Contractor shall provide and pay for all materials, supplies, machinery,
equipment, toots, superintendence, labor, insurance, and all water, light, power, fuel, transportation and
all other facilities necessary for the execution and completion of the work covered by the contract docu-
ments. Unless otherwise specified, all materials shall be new and both workmanship and materials shall be
of a good quality. The Contractor shall, if required, furnish satisfactory evidence as to the kind and
quality of materials. Materials or work described in words which so applied have well known, technical or
trade meaning shall be held to refer such recognized standards.
Alt work shall be done and all materials furnished in strict conformity with the contract documents.
9. SUBSTANTIALLY COMPLETED —
The term "Substantially Completed" is meant that the structure or project contemplated by the contract docu-
ments has been made suitable for use or occupancy or the facility is in a condition to serve its intended
purpose, but still may require minor miscellaneous work and adjustment. —
10. LAYOUT
Except as specifically provided herein, the Contractor shalt be responsible for laying out all work and
shall accomplish this work in a manner acceptable to the Owner's Representative. The Owner's Representative
will check the Contractor's layout of all major structures and any other layout work done by the Contractor
at Contractor's request, but this check does not relieve the Contractor of the responsibility of correctly
locating all work in accordance with the Plans and Specifications.
11. KEEPING OF PLANS AND SPECIFICATIONS ACCESSIBLE
The Contractor shalt be furnished with one copies of all Plans, Profiles and Specifications without expense
to him and he shalt keep one copy of same consistently accessible on the job site. —
12. RIGHT OF ENTRY
The Owner's Representative may make periodic visits to the site to observe the progress -of quality of the
executed work and to determine, in general, if the work is proceeding in accordance with the contract docu-
ments. He wilt not be required to make exhaustive or continuous on-site inspections to check the quality or
quantity of the work, nor will he be responsible for the construction means, methods, techniques, sequences
or procedures, or the safety precautions incident thereto. His efforts wilt be directed towards providing
assurances for the Owner that the completed project will conform to the requirements of the contract docu-
ments, but he will not be responsible for the Contractor's failure to perform the work in accordance with
the Contract Documents. On the basis of his on-site observations, he will keep the Owner informed of the
progress of the work and will endeavor to guard the Owner against defects and deficiencies in the work of
the Contractor.
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13. LINES AND GRADES
!^ All tines and grades shalt be furnished by the Owner's Representative whenever necessary for the commence-
ment of the work contemplated by these contract documents or the completion of the work contemplated by
these contract documents. Whenever necessary, Contractor shall suspend his work in order to permit Owner's
Representative to comply with this requirement, but such suspension will be as brief as practical and Con-
tractor shalt be allowed no extra compensation therefore. The Contractor shalt give the Owner's Repre-
sentative ample notice of the time and place where tines and grades will be needed. All stakes, marks,
etc., shall be carefully preserved by the Contractor, and in case of careless destruction or removal by him,
his Subcontractors, or his employees, such stakes, marks, etc., shall be replaced by the Owner's Representa-
tive at Contractor's expense.
r., 14. OWNER'S REPRESENTATIVE'S AUTHORITY AND DUTY
Unless otherwise specified, it is mutually agreed between the parties to this Agreement that the Owner's
Representative shall review all work included herein. He has the authority to stop the work whenever such
stoppage may be necessary to insure the proper execution of the contract. In order to permit delays and
disputes and to discourage litigation, it is further agreed that the Owner's Representative shall, in all
cases, determine the amounts and quantities of the several kinds of work which are to be paid for under this
contract. He shall determine all questions in relation to said work and the construction thereof, and
shalt, in all cases, decide every question which may arise relative to the execution of this contract on the
part of said Contractor. The Owner's Representative's estimates and findings shall be conditions precedent
to the right of the parties hereto to arbitration or to any action on the contract, and to any rights of the
Contractor to receive any money under this contract; provided, however, that should owner's Representative
render any decision or give any direction, which in the opinion of either party hereto, is not in accordance
with the meaning and intent of this contract, either party may file with said Owner's Representative within
30 days his written objection to the decision or direction so rendered, and by such action may reserve the
right to submit the questions so raised to arbitration as hereinafter provided. It is the intent of this
Agreement that there shall be no delay in the execution of the work, therefore, written decisions or direc-
tion of the Owner's Representative as rendered shalt be promptly carried out, and any claim arising there-
from shall be thereafter adjusted to arbitration as hereinafter provided.
The Owner's Representative shall, within a reasonable time, render and deliver to both the Owner and the
Contractor a written decision on all claims of the parties hereto and on all questions which may arise rela-
tive to the execution of the work or the interpretation of the contract, specifications and plans. Should
the owner's Representative fail to make such decision within a reasonable time, an appeal to arbitration may
be taken as if his decision had been rendered against the party appealing.
15. SUPERINTENDENCE AND INSPECTION
It is agreed by the Contractor that the Owner's Representative shalt be and is hereby authorized to -appoint
from time to time such subordinate engineers, supervisors, or inspectors as the said Owner's Representative
may deem proper to inspect the materials furnished and the work done under this Agreement, and to see that
said material is furnished and said work is done in accordance with the specifications therefore. The Con-
tractor shall furnish all reasonable aid and assistance required by the subordinate engineers, supervisors
or inspectors for the proper inspection and examination of the work. The Contractor shall regard and obey
the directions and instructions of any subordinate engineers, supervisors or inspectors so appointed, when
such directions and instructions are consistent with the obligations of this Agreement and accompanying
plans and specifications provided, however, should the Contractor object to any orders by any subordinate
engineer, supervisor or inspector, the Contractor may within six (6) days make written appeal to the Owner's
Representative for his decision.
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S
16. CONTRACTOR'S DUTY AND SUPERINTENDENCE
The Contractor shall give personal attention to the faithful prosecution and completion of this contract and
shall keep on the work, during its progress, a competent superintendent and any necessary assistants, all
satisfactory to Owner's Representative. The superintendent shall represent the Contractor in his absence
and all directions given to him shall be binding as if given to the Contractor. Adequate supervision by
competent and reasonable representatives of the Contractor is essential to the proper performance of the
work and lack of such supervision shall be grounds for suspending operations of the Contractor.
The work, from its commencement to completion, shall be under the exclusive charge and control of the Con-
tractor and all risk in connection therewith shalt be borne by the Contractor.
The Owner or Owner's Representatives will not be responsible for the acts or omissions of the Contractor, or
any subcontractors, or any of his agents or employees, or any other persons performing any of the work.
17. CONTRACTOR'S UNDERSTANDING
It is understood and agreed that the Contractor has, by careful examination, satisfied himself as to the na-
ture and location of the work, the confirmation of the ground, the character, quality and quantity of mate-
rials to be encountered, the character of equipment and facilities needed preliminary to and during the
prosecution of the work, and the general and local conditions, and all other matters which in any way effect
the work under this contract. No verbal agreement or conversation with any officer, agent, or employee of
the Owner, either before or after the execution of this contract, shall effect or modify any of the terms or
obligations herein contained.
18. CHARACTER OF WORKMEN
The Contractor agrees to employ only orderly and competent men, skillful in the performance in the type of
work required under this contract, to do the work; and agrees that whenever the Owner's Representative shalt
inform him in writing that any man or men on the work, are, in his opinion, incompetent, unfaithful, or dis-
orderly, such man or men shalt be discharged from the work and shalt not again be employed on the work with-
out the Owner's Representative's written consent.
19. CONSTRUCTION PLANT
The Contractor shall provide all labor, tools, equipment, machinery and materials necessary in the prosecu-
tion and completion of this contract where it is not otherwise specifically provided that Owner shall fur-
nish same, and it is also understood that Owner shall not be held responsible for the care, preservation,
conservation, or protection of any materials, tools, equipment or machinery or any part of the work until it
is finally completed and accepted.
The building of structures for the housing of men or equipment will be permitted only at such places as the
Owner's Representative shall direct, and the sanitary conditions of the grounds in or about such structure
shall at all times be maintained in a manner satisfactory to the Owner's Representative.
20. SANITATION
Necessary sanitary conveniences for the use of laborers on the work site, properly secluded from public ob-
servation, shalt be constructed and maintained by the Contractor in such manner and at such points as shalt
be approved by the Owner's Representative and their use shall be strictly enforced.
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21. OBSERVATION AND TESTING
The Owner or Owner's Representative shall have the right at all reasonable times to observe and test the
work. _Contractor shall make necessary arrangements and provide proper facilities and access for such obser-
vation and testing at any location wherever work is in preparation or progress. Contractor shall ascertain
the scope of any observation which may be contemplated by Owner or Owner's Representative and shall give am-
ple notice as to the time each part of the work will be ready for such observation. Owner or Owner's Rep-
resentative may reject any work found to be defective or not in accordance with the contract documents, re-
gardless of the stage of its completion or the time or place of discovery of such errors and regardless of
whether Owner's Observer has previously accepted the work through oversight or otherwise. If any work
should be covered without approval or consent of the Owner, it must, if requested by Owner or Owner's Repre-
sentative, be uncovered for examination at Contractor's expense. In the event that any part of the work is
being fabricated or manufactured at a location where it is not convenient for Owner or Owner's Representa-
tive to make observations of such work or require testing of said work, then in such event Owner or Owner's
Representative may require Contractor to furnish Owner or Owner's Representative certificates of inspection,
testing or approval made by persons competent to perform such tasks at the location where that part of the
work is being manufactured or fabricated. All such tests will be in accordance with the methods prescribed
by the American Society for Testing and Materials or such other applicable organization as may be required
by law or the contract documents.
If any work which is required to be inspected, tested, or approved is covered up without written approval or
consent of the Owner or Owner's Representative, it must, if requested by the Owner or Owner's Representa-
tive, be uncovered for observation and testing at the Contractor's expense. The cost of all such inspec-
tions, tests and approvals shall be borne by the Contractor unless otherwise provided herein. Any work
which fails to meet the requirements of any such tests, inspections or approval, and any work which meets
the requirements of any such tests or approval but does not meet the requirements of the contract documents
shall be considered defective. Such defective work shall be corrected at the Contractor$s expense.
Neither observations by the Owner or Owner's Representative, nor inspections, tests, or approvals made by
Owner, Owner's Representative, or other persons authorized under this agreement to make such inspections,
tests, or approvals shalt relieve the Contractor from his obligation to perform the work in accordance with
the requirements of the contract documents.
22. DEFECTS AND THEIR REMEDIES
It is further agreed that if the work or any part thereof, or any material brought on the site of the work
for use in the work or selected for the same, shall be deemed by the Owner or Owners' Representative as un-
suitable or not in conformity with plans, specification and contract documents, the Contractor shall, after
receipt of written notice thereof from the Owner's Representative, forthwith remove such material and re-
build or otherwise remedy such work so that it shall be in full accordance with this contract. It is fur-
ther agreed that any remedial action contemplated as hereinabove set forth shall be at Contractor's expense.
23. CHANGES AND ALTERATIONS
The Contractor further agrees that the Owner may make such changes and alterations as the Owner may see fit,
in the line, grade, form dimensions, plans or or materials for the work herein contemplated, or any part
thereof, either before or after the beginning of the construction, without affecting the validity of this
contract and the accompanying bond.
If such changes or alterations diminish the quantity of the work to be done, they shall not constitute the
basis for a claim for damages, or anticipated profits on the work that may be dispensed with. If they in-
crease the amount of work, and the increased work can fairly be classified under the specifications, such
increase shall be paid according to the quantity actually done and at the unit price established for such
work under this contract; otherwise such additional work shall be paid for as provided under Extra Work. In
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case the Owner shall make such changes or alterations as shall make useless any work already done or mate-
rial already furnished or used in said work, then the Owner shall recompense the Contractor for any material
or labor so used, and for any actual loss occasioned by such change, due to actual expenses incurred in
originally for the work as ori
preparation g' y planned. ,.
24. EXTRA WORK
The term "extra work" as used in this contract shall be understood to mean and include all work that may be
required by the Owner or Owner's Representative to be done by the Contractor to accomplish any change, al-
teration or addition to the work as shown on the plans and specifications or contract documents and not cov-
ered by Contractor's proposal, except as provided under Changes and Alterations herein.
It is agreed that the Contractor shall perform all extra work under the direction of the Owner's Representa-
tive when presented with a written work order signed by the Owner's Representative; subject, however, to the
right of the Contractor to require written confirmation of such extra work order by the Owner. It is also
agreed that the compensation to be paid to the Contractor for performing said extra work shall be determined
by the following methods:
Method (A) - By agreed unit prices; or
Method (B) - By agreed lump sum; or
Method (C) If neither Method (A) or Method (B) be agreed upon before the extra work is com-
menced, then the Contractor shall be paid the actual field cost of the work, plus
fifteen (15X) per cent.
In the event said extra work be performed and paid for under Method (C), then the provisions of this para-
graph shall apply and the "actual field cost" is hereby defined to include the cost of all workmen, such as
foremen, timekeepers, mechanics and laborers, materials, supplies, teams, trucks, rentals on machinery and
equipment, for the time actually employed or used on such extra work, plus actual transportation charges
necessarily incurred, together with all expenses incurred directly on account of such extra work, including
Social Security, Old Age Benefits, Maintenance Bonds, Public Liability and Property Damage and Workmen's
Compensation and all other insurances as may be required by law or ordinances or directed by the Owner or
Owner's Representative, or by them agreed to. Owner's Representative may direct the form in which accounts
of the actual field cost shall be kept and records of these accounts shall be made available to the Owner's _
Representative. The owner's Representative may also specify in writing, before the work commences, the
method of doing the work and the type and kind of machinery and equipment to be used; otherwise, these mat-
ters shall be determined by the Contractor. Unless otherwise agreed upon, the prices for the use of machin-
ery and equipment shall be determined by using 100%, unless otherwise specified, of the latest Schedule of
Equipment and Ownership Expenses adopted by the Associated General Contractors of America. Where practical,
the terms and prices for the use of machinery and equipment shall be incorporated in the written extra work
order. The fifteen percent (15X) of the actual field cost to be paid to Contractor shall cover and com-
pensate him for his profit, overhead, general superintendence and field office expense, and all other ele
ments of cost and expense not embraced within the actual field cost as herein defined, save that where the
Contractor's Camp or Field Office must be maintained primarily on account of such Extra Work, then the cost
to maintain and operate the same shall be included in the Factual field cost."
No claim for extra work of any kind will be allowed unless ordered in writing by Owner's Representative. In
case any orders or instructions appear to the Contractor to involve extra work for which he should receive
compensation or an adjustment in the construction time, he shall make written request to the Owner's Repre-
sentative for a written order authorizing such extra work. Should a difference of opinion arise as to what
does or does not constitute extra work or as to the payment therefore, and the Owner's Representative in-
sists upon its performance, the Contractor shalt proceed with the work after making written request for
written order and shall keep adequate and accurate account of the actual field cost thereof, as provided
under Method (C). The Contractor will thereby preserve the right to submit the matter of payment to arbi-
tration as herein below provided.
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r
25. DISCREPANCIES AND OMISSIONS
r• It is further agreed that it is the intent of this contract that all work described in the proposal, the
specifications, plans and other contract documents, is to be done for the prices quoted by the Contractor
and that such price shall include alt appurtenances necessary to complete the work in accordance with the
intent of these contract documents as interpreted by Owner's Representative. If the Contractor finds any
discrepancies or omissions in these plans, specifications, or contract documents, he should notify the
Owners' Representative and obtain a clarification before the bids are received, and if no such request is
received by the Owner's Representative prior to the opening of bids, then it shall be considered that the
Contractor fully understands the work to be included and has provided sufficient sums in his proposal to
complete the work in accordance with these plans and specifications. it is further understood that any re-
quest for clarification must be submitted no Later than five days prior to the opening of bids.
I 26. RIGHT Of OWNER TO MODIFY METHODS AND EQUIPMENT
If at any time the methods or equipment used by the Contractor are found to be inadequate to secure the
quality of work with the rate of progress required under this contract, the Owner or Owner's Representative
may order the Contractor in writing to increase their safety or improve their character and efficiency and
the Contractor shall comply with such order.
If, at any time, the working force of the Contractor is inadequate for securing the progress herein speci-
fied, the Contractor shall, if so ordered in writing, increase his force or equipment, or both, to such an
extent as to give reasonable assurance of compliance with the schedule of progress.
27. PROTECTION AGAINST ACCIDENT TO EMPLOYEES AND THE PUBLIC
r° The Contractor shall take out and procure a policy or policies of Workmen's Compensation Insurance with an
( insurance company Licensed to transact business in the State of Texas, which policy shall comply with the
Workmen's Compensation laws of the State of Texas. The Contractor shall at all times exercise reasonable
precaution for the safety of employees and others on or near the work and shall comply with all applicable
{ provisions of federal, state and municipal laws and building and construction codes. ALI machinery and
equipment and other physical hazards shall be guarded in accordance with the "Manual of Accident Prevention
in Construction" of Associated General Contractors of America, except where incompatible with federal, state
ror municipal laws or regulations. The Contractor, his sureties and insurance carriers shall defend, indem-
nify and save harmless the Owner and all of its officers, agents and employees from all suits, actions, or
claims of any character whatsoever, brought for or on account of any injuries or damages received or sus-
tained by any person or persons or property, on account of any negligent act or fault of the Contractor or
any subcontractor, their agents or employees, in the execution and supervision of said contract,'and the
project which is the subject matter of this contract, on account of the failure of Contractor or any subcon-
tractor to provide necessary barricades, warning lights, or signs and will be required to pay any judgment
with costs which may be obtained against the Owner or any of its officers, agents, or employees including
attorney's fees:
The safety precautions taken shall be the sole responsibility of the Contractor, in his sole discretion as
1
L an Independent Contractor; inclusion of this paragraph in the Agreement, as well as any notice which may be
given by the Owners or the Owner's Representative concerning omissions under this paragraph as the work pro-
gresses, are intended as reminders to the Contractor of his duty and shall not be construed as any assump-
tion of duty to supervise safety precautions by either the Contractor or any of his subcontractors.
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28. CONTRACTOR'S INSURANCE
The Contractor shall procure and carry at his sole cost and expense through the life of this contract, in- "I
surance protection as hereinafter specified. Such insurance shall be carried with an insurance company au-
thorized to transact business in the State of Texas and shall cover all operations in connection with this
contract, whether performed by the Contractor or a subcontractor, or separate policies shall be provided —
covering the operation of each subcontractor.
A. Comprehensive General Liability Insurance
The contractor shalt have Comprehensive General Liability Insurance with limits of $300,000 Bodily
Injury and $300,000 Property Damage per occurrence to include:
Premises and Operations
Explosion & Collapse Hazard
Underground Damage Hazard
Products & Completed Operations Hazard
Contractual Liability
Independent Contractors Coverage
Personal Injury (with exclusion "c" waived)
The City is to be named as an additional insured on this policy for this specific job, and copy of
the endorsement doing so is to be attached to the Certificate of Insurance.
B. Owner's Protective or Contingent Public Liability Insurance and Property Damage Liability Insurance.
The Contractor shall obtain an Owner's Protective or Contingent Public Liability Insurance policy
naming the City of Lubbock as insured and the amount of such policy shall be as follows
For bodily injuries, including accidental death, $500,000 per occurrence, and $100,000 for Property
Damage.
C. Comprehensive Automobile Liability Insurance
The Contractor shall have Comprehensive Automobile Liability Insurance with limits of not less than;
Bodily Injury $250/500,000
Property Damage $100,000
to include all owned and non -owned cars including: Employers Non -ownership Liability Hired and Non -
owned Vehicles. The City is to be named as an additional insured on this policy for this specific
job and copy of the endorsement doing so is to be attached to the Certificate of insurance.
I
D. Builder's Risk Insurance
The Contractor shalt obtain a Builder's Risk policy in the amount of (100% of poten-
tial loss) naming the City of Lubbock as insured.
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I
E. Excess or Umbrella Liability Insurance
'.. The Contractor shall have Excess or Umbrella Liability Insurance in the amount of
($1,000,000 minimum) with coverage to correspond with Comprehensive General Liability and Comprehen-
sive Automobile Liability coverages.
The City is to be named as an additional insured on this policy for this specific job and copy of
the endorsement doing so is to be attached to the Certificate of Insurance.
7 F. Worker's Compensation and Employers Liability Insurance
As required by State statute covering all employees whether employed by the Contractor or any Sub -
7 contractor on the job with Employers Liability of at least $100,000 limit.
G. Proof of Coverage
7 Before work on this contract is commenced, each Contractor and subcontractor shall submit to the
Owner for approval five Certificates of Insurance covering each insurance policy carried and
offered as evidence of compliance with the above insurance requirements, signed by an authorized
representative of the insurance company setting forth:
1,
(1) The name and address of the insured.
'(2) The location of the operations to which the insurance applies.
i
(3) The name of the policy and type or types of insurance in force thereunder on the date borne
by such certificate.
C
(4) The expiration date of the policy and the Limit or limits of liability thereunder on the
7 date borne by such certificate.
(5) A provision that the policy may be canceled only by mailing written notice to the named in-
sured at the address shown in the bid specifications.
(b) A provision that written notice shall be given to the City ten days prior to any change in
or cancellation of the policies shown on the certificate.
r
(7) The certificate or certificates shall be on the form (or identical copies thereof) con-
tained in the job specifications. No substitute of nor amendment thereto will be accept-
able.
29. PROTECTION AGAINST CLAIMS OF SUBCONTRACTORS LABORERS MATERIALMEN AND FURNISHERS OF MACHINERY EQUIPMENT
AND SUPPLIES
The Contractor agrees that he wilt indemnify and save the Owner harmless from all claims growing out of any
demands of subcontractors, laborers, workmen, mechanics, materialmen and furnishers of machinery and parts
thereof, equipment, power tools, all suppliers, including commissary, incurred in the furtherance of the
performance of this contract. When Owner so desires, the Contractor shall furnish satisfactory evidence
that all obligations of the nature hereinabove designated have been paid, discharged or waived.
7 If during the progress of the work, Contractor shalt allow any indebtedness to accrue for work furnished by
any of those designated in the preceding paragraph and shall fail to pay and discharge any such indebtedness
within five (5) days after demand is made, then Owner may, during the period for which such indebtedness
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shall remain unpaid, withhold from the unpaid portion of this contract, a sum equal to the amount of such
unpaid indebtedness or may apply the sum so withheld to discharge any such indebtedness.
Any and all communications between any party under this paragraph must be in writing.
30. PROTECTION AGAINST ROYALTIES OR PATENT INVENTION
The contractor shalt pay all royalties and license fees, and shall provide for the use of any design, de-
vice, material or process covered by letters patent or copyright by suitable legal agreement with the Paten-
tee or Owner thereof. The Contractor shall defend all suits or claims for infringement of any patent or
copyrights and shall indemnify and save the Owner harmless from any loss on account thereof, except that
Owner shall defend all such suits and claims and shall be responsible for all such loss when a particular
design, device, material or process or the product of a particular manufacturer or manufacturers is speci-
fied or required in these contract documents by Owner; provided, however, if choice of alternate design, de-
vice, material or process is allowed to the Contractor, then Contractor shalt indemnify and save owner harm-
less from any loss on account thereof. If the material or process specified or required by Owner is an in-
fringement, the Contractor shall be responsible for such loss unless he promptly gives written notice to the ^
Owner of such infringement.
31. LAWS AND ORDINANCES
The Contractor shall at all times observe and comply with all federal, state and local laws, ordinances and
regulations, which in any manner effect the contract or the work, and shall indemnify and save harmless the
Owner against any claims arising from the violation of any such laws, ordinances, and regulations, whether
by the Contractor or his employees. If the Contractor observes that the plans and specifications are at
variance therewith, he shalt promptly notify the Owners' Representative in writing and any necessary changes
shall be adjusted as provided in the contract for changes in the work. If the Contractor performs any work
knowing it to be contrary to such laws, ordinances, rules and regulations, and without such notice to the
Owner's Representative, he shall bear all costs arising therefrom.
The Owner is a municipal corporation of the State of Texas and the law from which it derives its powers, in-
sofar as the same regulates the objects for which, or the manner in which, or the conditions under which the
Owner may enter into contracts, shalt be controlling, and shall be considered as part of this contract to
the same effect as though embodied herein.
32. ASSIGNMENT AND SUBLETTING
The Contractor further agrees that he will retain personal control and will give his personal attention to
the fulfillment of this contract. The Contractor further agrees that subletting of any portion or feature
of the work, or materials required in the performance of this contract, shall not relieve the Contractor
from his full obligations to the Owner, as provided by this contractual agreement.
33. TIME FOR COMPLETION AND LIQUIDATED DAMAGES
It is hereby understood and mutually agreed by and between the Contractor and the Owner, that the date of
beginning and time for completion as specified in the contract of work to be done hereunder are essential
conditions of this contract; and it is further mutually understood and agreed that the work embraced in this
contract shall be commenced on a date to be specified in the Notice to Proceed. i
If the Contractor should neglect, fail, or refuse to complete the work within the time herein specified, or
any proper extension thereof granted by the Owner, then the Contractor does hereby agree as part of the con-
sideration for the awarding of this contract, the Owner may withhold permanently from Contractor's total
compensation, the sum of $250.00 (TWO HUNDRED FIFTY DOLLARS) PER DAY, not as a penalty, but as liquidated
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E damages for the breach of the contract as herein set forth for each and every calendar day that the
Contractor shall be in default after the time stipulated for completing the work.
It is expressly understood and agreed, by and between Contractor and the Owner, that the time for the com-
pletion of the work described herein is reasonable time for the completion of the same, taking into consid-
eration the average climatic change and conditions and usual industrial conditions prevailing in this Local-
ity.
The amount is fixed and agreed upon by and between the Contractor and the Owner because of the impractica-
bility and extreme difficulty in fixing and ascertaining actual damages the Owner would in such event sus-
tain, and the amount is agreed to be damages the Owner would sustain and shall be retained by the Owner from
current periodical estimates for payments or from final payment.
It is further agreed and understood between the Contractor and Owner that time is of the essence of this
contract.
34. TIME AND ORDER OF COMPLETION
It is the meaning and intent of this contract, unless otherwise herein specifically provided, that the Con-
tractor shall be allowed to prosecute his work at such time and sessions, in such order of precedence, and
in such manner as shall be most conductive to economy of construction; provided, however, that the order and
time of prosecution shall be such that the work shall be substantially completed as a whole and in part, in
accordance with this contact, the plans and specifications, and within the time of completion designated in
the proposals; provided, also, that when the Owner is having other work done, either by contract or by his
own force, the Owner's Representative may direct the time and manner of constructing work done under this
contract so that conflicts will be avoided and the construction of the various works being done for the
Owner shall be harmonized.
The Contractor shall submit, at such times as may reasonably be requested by the Owner's Representative,
schedules which shalt show the order in which the Contractor proposes to carry on the work, with dates at
which the Contractor will start the several parts of the work and estimated dates of completion of the sev-
eral parts.
35. EXTENSION OF TIME
The Contractor agrees that he has submitted his proposal in full recognition of the time required for the
completion of this project, taking into consideration the average climatic range and industrial conditions
prevailing in this locality, and has considered the liquidated damage provisions of paragraph 33 hereinabove
set forth and that he shall not be entitled to, nor will he request, an extension of time on this contract,
except when his work has been delayed by an act or neglect of the Owner, Owner's Representative, employees
of the Owner or other contractors employed by the owner, or by changes ordered in the work, or by strike,
walk -outs, acts of God or the public enemy, fire or flood. The Contractor may apply in writing for an ex-
tension of time, submitting therewith all written justification as may be required by Owner's Representative
for such an extension as requested by Contractor. The Owner's Representative within ten (10) days after re-
ceipt of a written request for an extension of time by the Contractor supported by all requested docu-
mentation shall then submit such written request to the City Council of the City of Lubbock for their con-
sideration. Should the Contractor disagree with the action of City Council on granting an extension of
time, such disagreement shall be settled by arbitration as hereinafter provided.
36. HINDRANCE AND DELAYS
In executing the contract agreement, the Contractor agrees that in undertaking to complete the work within
the time herein fixed, he has taken into consideration and made allowances for all hindrances and delays in-
cident to such work, whether growing out of delays in securing material or workmen or otherwise. No charge
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shall be made by the Contractor for hindrance or delays from any cause during the progress of any part of
the work embraced in this contract except where the work is stopped by order of the Owner or Owner's
Representative for the Owner's convenience, in which event, such expense as in the judgment of the Owner's
Representative that is caused by such stoppage shall be paid by Owner to Contractor.
37. QUANTITIES AND MEASUREMENTS
No extra or customary measurements of any kind will be allowed, but the actual measured or computed length,
area, solid contents, number and weight only shall be considered, unless otherwise specifically provided.
In the event this contract is let on a unit price basis, then Owner and Contractor agree that this contract,
including the specifications, plans and other contract documents are intended to show clearly all work to be
done and material to be furnished hereunder. Where the estimated quantities are shown for the various
classes of work to be done and material to be furnished under this contract, they are approximate and are to
be used only as a basis for estimating the probable cost of the work and for comparing their proposals of-
fered for the work. It is understood and agreed that the actual amount of work to be done and the materials
to be furnished under this contract may differ somewhat from these estimates, and that where the basis for
payment under this contract is the unit price method, payment shall be for the actual amount of work done
and materials furnished on the project.
38. PROTECTION OF ADJOINING PROPERTY
The Contractor shall take proper means to protect the adjacent or adjoining property or properties in any _
way encountered, which may be injured or seriously affected by any process of construction to be undertaken
under this agreement, from any damage or injury by reason of said process of construction; and he shall be
liable for any and all claims for such damage on account of his failure to fully protect all adjacent
property. The Contractor agrees to indemnify, save and hold harmless the Owner against any claim or claims
for damages due to any injury to any adjacent or adjoining property, arising or growing out of the perfor-
mance of this contract, but such indemnity shall not apply to any claim of any kind arising out of the exis-
tence or character of the work.
39. PRICE FOR WORK
In consideration of the furnishing of all necessary labor, equipment and material and the completion of all
work by the Contractor, and on the delivery of all materials embraced in this contract in full conformity
with the specifications and stipulations herein contained, the Owner agrees to pay the Contractor the price
set forth in the proposal attached hereto, which has been made a part of this contract, and the Contractor
hereby agrees to receive such price in full for furnishing all materials and all labor required for the
aforesaid work, also, for all expenses incurred by him and for well and truly performing the same and the
whole thereof in the manner and according to this agreement, the attached specifications, plans, contract
documents and requirements of Owner's Representative.
40. PAYMENTS
No payments made or certificates given shall be considered as conclusive evidence of the performance of the
contract, either wholly or in part, nor shall any certificate or payment be considered as acceptance of de-
fective work. Contractor shall at any time requested during the progress of the work furnish the Owner or
Owner's Representative with a verifying certificate showing the Contractor's total outstanding indebtedness
in connection with the work. Before final payment is made, Contractor shall satisfy Owner, by affidavit or
otherwise, that there are no outstanding liens against Owner's premises by reason of any work under the con-
tract. Acceptance by Contractor of final payment of the contract price shall constitute a waiver of all
claims against Owner which have not theretofore been timely filed as provided in this contract.
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4
41. PARTIAL PAYMENTS
v� On or before the tenth day of each month, the Contractor shall submit to Owner's Representative an applica-
tion for partial payment. Owner's Representative shall review said application for partial payment and the
progress of the work made by the Contractor and if found to be in order shall prepare a certificate for par-
tial payment showing as completely as practical the total value of the work done by the Contractor up to and
including the last day of the preceding month; said statement shall also include the value of all sound ma-
terials delivered on site of the work that are to be fabricated into the work.
The Owner shall then pay the Contractor on or before the fifteenth day of the current month the total amount
of the Owner's Representative's Certificate of Partial Payment, less 5% of the amount thereof, which 5%
shalt be retained until final payment, and further, less all previous payments and all further sums that may
be retained by Owner under the terms of this agreement. It is understood, however, that in case the whole
work be near to completion, and this fact is certified to by owner's Representative and some unexpected and
some unusual delay occurs due to no fault or negligence on the part of the Contractor, the Owner may upon
written recommendation of Owner's Representative pay a reasonable and equitable portion of the retained per-
centage due Contractor.
42. FINAL COMPLETION AND ACCEPTANCE
Within thirty-one (31) days after the Contractor has given the Owner's Representative written notice that
the work has been completed or substantially completed, the Owner's Representative and the Owner shalt in-
spect the work and within said time, if the work be found to be completed or substantially completed in ac-
cordance with the contract documents, the Owner's Representative shalt issue to the Owner and Contractor his
certificate of completion, and thereupon it shalt be the duty of the Owner within thirty-one (31) days to
issue a certificate of acceptance of the work to the Contractor.
43. FINAL PAYMENT
Upon the issuance of the certificate of completion, the Owner's Representative shall proceed to make final
measurement and prepare a final statement of the value of all work performed and materials furnished under
the terms of the agreement, and shall certify same to the Owner, who shalt pay to the Contractor on or be-
fore the 31st day after the date of certificate of completion, the balance due Contractor under the terms of
this agreement, provided he has fully performed his contractual obligations under the terms of this con-
tract; and said payment shalt become due in any event upon said performance by the Contractor. Neither the
certificate of acceptance nor the final payment, nor any provisions in the contract documents shall relieve
the Contractor of the obligation for fulfillment of any warranty which may be required in the special condi-
tions (if any) of this contract or required in the specifications made a part of this contract.
44. CORRECTION OF WORK BEFORE FINAL PAYMENT FOR WORK
Contractor shall promptly remove from Owners' premises all materials condemned by the Owner's Representative
on account of failure to conform to the contract, whether actually incorporated in the work or not, and Con-
tractor shall at his own expense promptly replace such condemned materials with other materials conforming
to the requirements of the contract. Contractor shalt also bear the expense of restoring all work of other
contractors damaged by any such removal or replacement. if Contractor does not remove and replace any such
condemned work within a reasonable time after a written notice by the Owner or the Owner's Representative,
Owner may remove and replace it at Contractor's expense.
45. CORRECTION OF WORK AFTER FINAL PAYMENT
Neither the final payment nor certificate nor any provision in this contract shall relieve the Contractor of
responsibility for faulty materials or workmanship, and he shall remedy any defects due thereto and pay for
any damage to other work resulting therefrom, which shall appear within a period of one (1) year from the
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i
date of substantial completion. The Owner or the Owner's Representative shall give notice of observed de-
fects with reasonable promptness.
46. PAYMENT WITHHELD
The Owner may, on account of subsequently discovered evidence, withhold or nullify the whole or part of any
certificate to such extent as may be necessary to protect himself from loss on account of:
(a) Defective work not remedied.
(b) Claims filed or reasonable evidence indicating possible filing of claims.
(c) Failure of the Contractor to make payments promptly to subcontractors or for materials or labor.
(d) Damage to another contractor.
When the above grounds are removed, or the Contractor provides a surety bond satisfactory to the Owner,
which will protect the Owner in the amount withheld, payment shall be made for amounts withheld because of
them.
47. TIME OF FILING CLAIMS
It is further agreed by both parties hereto that all questions of dispute or adjustment presented by the
Contractor shall be in writing and filed with the Owner's Representative within fifteen (15) days after the
Owner's Representative has given any directions, order or instruction to which the Contractor desires to
take exception. The Owners' Representative shalt reply to such written exceptions by the Contractor and
render his final decision in writing. In case the Contractor should appeal from the decision of the Owner's
Representative, any demand for arbitration shall be filed with the owner's Representative and the Owner in
writing within ten (10) days after the date of delivery to Contractor of the final decision of the Owner's
Representative. It is further agreed that final acceptance of the work by the Owner and the acceptance by
the Contractor of the final payment shall be a bar to any claim by either party, except where noted other-
wise in the contract documents.
48. ARBITRATION
All questions of dispute under this agreement shall be submitted to arbitration at the request of either
party to the dispute. The parties may agree upon one arbitrator, otherwise, there shall be three; one named
in writing by each party and the third chosen by the two arbiters selected; or if the arbiters fail to se-
lect a third within ten (10) days, he shalt be chosen by the District Judge, 72nd Judicial District of
Texas. Each arbiter shall be a resident of the City of Lubbock. Should the party demanding arbitration —4
fail to name an arbiter within ten (10) days of the demand, his right to arbitrate shall lapse, and the de-
cision of the Owner's Representative shall be final and binding on him. Should the other party fail to
choose an arbiter within ten (10) days, the Owner's Representative shall appoint such arbiter. Should ei-
ther party refuse or neglect to supply the arbiters with any papers or information demanded in writing, the _
arbiters are empowered by both parties to take Ex Parte Proceedings.
The arbiters shall act with promptness. The decision of any two shall be binding on both parties to the
contract, unless either or both parties shall appeal within ten (10) days from date of the award by the ar-
biters, and it is hereby agreed that each party shall have the right of appeal and all proceedings shalt be
according to and governed by Arbitration Statutes of Texas, being Article 224, et seq., Vernon's Annotated
Civil Statutes. THE DECISION OF THE ARBITERS UPON ANY QUESTION SUBMITTED TO ARBITRATION UNDER THIS CONTRACT
SHALL BE A CONDITION PRECEDENT TO ANY RIGHT OF LEGAL ACTION.
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The arbiters, if they deem the case demands it, are authorized to award the party whose contention is sus-
tained, such suns as they deem proper for the time, expense and trouble incident to the appeal, and if the
r' appeal was taken without reasonable cause, they may award damages for any delay occasioned thereby. The ar-
biters shall fix their own compensation, unless otherwise provided by agreement, and shall assess the costs
and charges of the arbitration upon either or both parties. The award of the arbiters must be made in writ-
ing and shall not be open to objection on account of the form of proceedings or award.
49. ABANDONMENT BY CONTRACTOR
In case the Contractor should abandon and fail or refuse to resume work within ten (10) days after written
notification from the Owner or the Owner's Representative, or if the Contractor fails to comply with the or-
ders of the Owner's Representative, when such orders are consistent with this contract, this Agreement, or
the Specifications hereto attached, then the Surety on the bond shall be notified in writing and directed to
complete the work and a copy of said notice shall be delivered to the Contractor.
r,
After receiving said notice of abandonment, the Contractor shall not remove from the work any machinery,
equipment, tools, materials or supplies then on the job, but the same, together with any materials and
equipment under the contract for work, may be held for use on the work by the Owner or the Surety of the
Contractor, or another contractor, in completion of the work; and the Contractor shall not receive any
.. rental or credit therefore (except when used in connection with Extra Work, where credit shall be allowed as
provided for under paragraph 24 of this contract); it being understood that the use of such equipment and
materials will ultimately reduce the cost to complete the work and be reflected in the final settlement.
In case the Surety should fail to commence compliance with the notice for completion hereinbefore provided
for within ten (10) days after service of such notice, then the Owner may provide for completion of the work
in either of the following elective manners:
(a) The Owner may employ such force of men and use of machinery, equipment, toots, materials and sup-
plies as said Owner may deem necessary to complete the work and charge the expense of such labor,
machinery, equipment, tools, materials and supplies to said Contractor, and the expense so charged
shalt be deducted and paid by the Owner out of such moneys as may be due, or that may thereafter at
any time become due to the Contractor under and by virtue of this Agreement. In case such expense
is less than the sun which would have been payable under this contract, if the same had been com-
plated by the Contractor, then said Contractor shalt receive the difference. in case such expense
is greater than the sum which would have been payable under this contract, if the same had been com-
pleted by said Contractor, then the Contractor and/or his Surety shall pay the amount of such excess
to the Owner; or
(b) The Owner, under seated bids, after notice published as required by law, at least twice in a newspa-
per having a general circulation in the County of location of the work, may let the contract for the
completion of the work under substantially the same terms and conditions which are provided in this
contract. In case of any increase in cost to the Owner under the new contract as compared to what
would have been the cost under this contract, such increase shall be charged to the Contractor and
the Surety shall be and remain bound therefore. However, should the cost to complete any such new
contract prove to be less than that which would have been the cost to complete the work under this
contract, the Contractor or his Surety shall be credited therewith.
When the work shall have been substantially completed, the Contractor and his Surety shall be so notified
and certificates of completion and acceptance, as provided in paragraph 42 hereinabove set forth, shall be
issued. A complete itemized statement of the contract accounts, certified to by Owner's Representative as
being correct shall then be prepared and delivered to Contractor and his Surety,.whereon the Contractor or
his Surety, or the Owner as the case may be, shall pay the balance due as reflected by said statement within
30 days after the date of certificate of completion.
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In the event the statement of accounts shows that the cost to complete the work is less than that which
would have been the cost to the Owner had the work been completed by the Contractor under the terms of this
contract, or when the Contractor and/or his Surety shall pay the balance shown to be due by them to the
Owner, then all machinery, equipment, tools, materials or supplies left on the site of the work shall be
turned over to the Contractor and/or his Surety. Should the cost to complete the work exceed the contract
price, and the Contractor and/or his Surety fail to pay the amount due the Owner within the time designated
hereinabove, and there remains any machinery, equipment, tools, materials or supplies on the site of the
work, notice thereof, together with an itemized list of such equipment and materials shall be mailed to the
Contractor and his Surety at the respective addresses designated in this contract; provided, however, that _
actual written notice given in any manner will satisfy this condition. After mailing, or other giving of
such notice, such property shall be held at the risk of the Contractor and his Surety subject only to the
duty of the Owner to exercise ordinary care to protect such property. After fifteen (15) days from the date
of said notice the Owner may sell such machinery, equipment, tools, materials or supplies and apply the net ^—
sum derived from such sale to the credit of the Contractor and his Surety. Such sale may be made at either
public or private sale, with or without notice, as the Owner may elect. The Owner shall release any machin-
ery, equipment, tools, materials, or supplies which remain on the *jobsite and belong to persons other than
the Contractor or his Surety, to their proper owners.
50. ABANDONMENT BY OWNER
In case the Owner shall fail to comply with the terms of this contract, and should fail or refuse to comply
with said terms within ten (10) days after written notification by the Contractor, then the Contractor may
suspend or wholly abandon the work, and may remove therefrom all machinery, tools, and equipment, and all
materials on the ground that have not been included in payments to the Contractor and have not been incorpo-
rated into the work. Thereupon, the Owner's Representative shall make an estimate of the total amount
earned by the Contractor, which estimate shall include the value of all work actually completed by said Con-
tractor at the prices stated in the the attached proposal, the value of all partially completed work at a
fair and equitable price, and the amount of all Extra Work performed at the prices agreed upon, or provided
for by the terms of this contract, and a reasonable sum to cover the cost of any provisions made by the Con-
tractor to carry the whole work to completion, and which cannot be utilized. The Owner's Representative
shall then make a final statement of the balance due the Contractor by deducting from the above estimate all
previous payments by the owner acid all other sums that may be retained by the Owner under the terms of this
Agreement, and shall certify same to the Owner who shalt pay to the Contractor on or before thirty (30) days
after the date of the notification by the Contractor the balance shown by said final statement as due the
Contractor, under the terms of this Agreement.
51. BONDS
The successful bidder shalt be required to furnish a performance bond and payment bond in accordance with
Article 5160, Vernon's Annotated Civil Statutes in the amount of 100% of the total contract price, in the
event said contract price exceeds $25,000.00. If the contract price does not exceed $25,000.00, the statu-
tory bonds will not be required. All bonds, if required, shall be submitted on forms supplied by the Owner,
and executed by an approved Surety Company authorized to do business in the State of Texas. And it is fur-
ther agreed that this contract shall not be in effect until such bonds are so furnished.
52. SPECIAL CONDITIONS
In the event special conditions are contained herein as part of the contract documents and said special con-
ditions conflict with any of the general conditions contained in this contract, then in such event the
special conditions shall control.
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53.
54.
55.
OSSES FROM NATURAL CAUSES
Unless otherwise specified herein, all loss or damage to the Contractor arising out of the nature of the
work to be done, or from the action of the elements, or from any unforeseen circumstance and the prosecution
of the same, or from unusual obstructions or difficulties which may be encountered in the prosecution of the
work, shall be sustained and borne by the Contractor at his own cost and expense.
INDEPENDENT CONTRACTOR
Contractor is, and shall remain, an independent contractor with full, complete and exclusive power and au-
thority to direct, supervise, and control his own employees and to determine the method of the performance
of the work covered hereby. The fact that the Owner or Owner's Representative shalt have the right to ob-
serve Contractor's work during his performance and to carry out the other prerogatives which are expressly
reserved to and vested in the Owner or Owner's Representative hereunder, is not intended to and shalt not at
any time change or effect the status of the Contractor as an independent contractor with respect to either
the Owner or Owner's Representative or to the Contractor's own employees or to any other person, firm, or
corporation.
CLEANING UP
The Contractor shall at all times keep the premises free from accumulation of debris caused by the work, and I
at the completion of the work he shalt remove all such debris and also his tools, scaffolding, and surplus
materials and shall leave the work room clean or its equivalent. The work shall be left in good order and
condition. In case of dispute Owner may remove the debris and charge the cost to the Contractor.
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s
CURRENT WAGE DETERMINATIONS
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Resolution X2502
January 8, 1987
Agenda Item n18
DGV:da
RESOLUTION
WHEREAS, the City Council has heretofore established the general
prevailing rate of per diem wages for each craft or type of workmen or
mechanics needed to execute public works contracts for the City of Lubbock
in accordance with the provisions of Vernon's Ann.Civ.St., Art. 5159x; and
WHEREAS, such wage rates were established by Resolution No. 719
enacted February 12, 1981, updated by Resolution No. 1590 enacted February
23, 1984; and
WHEREAS, such rates need to be updated at the present time in order
to reflect the current prevailing rate of per diem wages; NOW THEREFORE:
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
THAT the general prevailing rate of per diem wages for public works
contracts shall be as set forth in the following named exhibits, which
exhibits shall be attached hereto and made a part hereof for all intents
and purposes:
Exhibit A: Building Construction Trades
Exhibit B: Paving and Highway Construction Trades
Exhibit C: Electrical Trades
Exhibit D: Overtime Rate
Exhibit E: Weekend and Holiday Rate
Such wage rates are hereby found and declared to be the general prevailing
rate of per diem wages in all localities where public works are undertaken
on behalf of the City of Lubbock and such wage rates shall be included in
all public works contracts as provided by law.
Passed by the City Council this 8th day of January , 1987.
ATTE
Ranette`Boyd, City Secretary
APPROVED Y TO ONTENT:
Bi 1 P yne, D rector of Building
Services
Se- -& Ghse�
B.C. McMINN, MAYOR
APPROVED AS TO QFO�RMM:
Donald G Vandiver, First
Assistant City Attorney
EXHIBIT A
City of Lubbock
Building Construction Trades
Prevailing Rates
Craft
Hourly Rate
Acoustical Ceiling Installer
$11.60
Air Conditioner Installer
8.35
Air Conditioner Installer -Helper
5.50
Bricklayer
10.50
Bricklayer=Helper
5.00 --
Carpenter
11.00
Carpenter -Helper
5.50
Cement Finisher '-
7.35
Drywall Hanger
8.70
Electrician
10.50
Electrician -Helper
5.25
Equipment Operator -
--
Heavy
8.00
Light
5.70
Floor Installer
8.00 --
Glazier
7.50
Insulator, Piping/Boiler
9.50
Insulator -Helper
5.00
Iron Worker
7.30
Laborer, General
4.75
Mortar Mixer
5.60
Painter - _.__....._.._..
—
Plumber
__.8.75
- 9.25
Plumber -Helper
6.00
Roofer
7.65
Roofer -Helper
4.75
Sheet Metal Worker
8.75
Sheet Metal Worker -Helper
5.50
Welder - Certified
8.00
EXHIBIT B
Paving and Highway Construction
Prevailing Wage Rates
Craft
Hourly Rate
Asphalt Heaterman
$5.25
Asphalt Shoveler
4.75
Concrete Finisher
7.35
Concrete Finisher -Helper
4.75
Electrician
10.50
Flagger
4.75
Form Setter
6.50
Form Setter -Helper
5.50
Laborer, General
4.75
Laborer, Utility
5.80
Mechanic
6.50
Mechanic -Helper --
6.00
POWER EQUIPMENT OPERATORS
Asphalt Paving Machine
6.00
Bulldozer
5.25
Concrete Paving Machinist
6.50
Front End Loader
5.85
Heavy Equipment Operator
6.40
Light Equipment Operator
6.40
Motor Grade Operator
8.00
Roller
5.25
Scraper
5.25
Tractor
5.50
Truck Driver -
Light 5.25
Heavy 5.25
EXHIBIT C
Electric Construction Trades
Prevailing Wage Rates
Craft Hourly Rate
Power Line Foreman $11.00
Lineman Journeyman 10.45
Lineman Apprentice Series 8.90
Groundman Series 7.25
EXHIBIT D
Prevailing Wage Rates
Overtime Rate
The rate for overtime (in excess of forty hours per week) is 1 1/2
times base rate.
EXHIBIT E
Prevailing Wage Rates
Weekend and Holiday Rate
The rate for weekend and holiday is 1 1/2 times base rate.
SPECIFICATIONS
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CITY OF LUBBOCK
SPECIFICATIONS
FOR
PROJECT NO. 9474
82ND STREET STRIP PAVING
FROM I-27 TO QUIRT AVENUE
B.C. McMINN, MAYOR
City Council
Maggie Trejo Bill Maloy
T.J. Patterson Gary D. Phillips
George Carpenter Joan Baker
Larry Cunningham, City Manager
Jim Bertram, Assistant City Manager for Development Services
Larry D. Hertel, City Engineer
PREPARED BY: STREETS/DRAINAGE ENGINEERING
DAN ECHOLS
LUPE GARCIA
R. KEITH SMITH
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E
SPECIAL CONDITIONS
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1. CHANGES IN THE WORK
The Local Public Agency may increase the quantity of the work
in the Contract by supplementary projects, not included in
the Contract, without invalidating the Contract, and without
relieving or releasing the Contractor from any of his
r- obligations under the Contract or any guarantee given by him
pursuant to the Contract provisions, and without affecting
the validity of the guaranty bonds, and without relieving or
releasing the surety or sureties of said bonds. All such
work shall be executed under the terms of the original
Contract unless it is expressly provided otherwise.
If applicable unit prices are contained in the agreement
(established as a result of either a unit price bid or a
Supplement Schedule of Unit Prices) the Local Public Agency
may order the Contractor to proceed with desired additions to
the work as a result of supplementary projects, the value of
such changes to be determined by the measured quantities
involved and the applicable unit prices specified in the
Contract; provided that in of a unit price contract the
net value of all additions does not increase or decrease the
original total amount shown in the Agreement by more than
twenty-five (25%).
Except for the purpose of affording protection against any
emergency endangering health, life, limb or property, the
Contractor shall make no change in the materials used or in
the specified manner or construction and/or installing the
improvements or supply additional labor, services or
materials beyond that actually required for the execution of
the Contract, unless in pursuance of a written order from the
Local Public Agency authorizing the Contractor to proceed
with the change. No claim for an adjustment of the contract
price will be valid unless so ordered.
2. SUPERINTENDENCE
The Superintendent and/or his assistants will not be allowed
to serve two functions simultaneously, such as operating
machinery and,acting as Superintendent at the same time. The -
Superintendent must be free of individual responsibilities to
,., enable him to give the entire project his constant attention
�'. to facilitate the progress thereof.
SC -1
3. TIME AND ORDER FOR COMPLETION
No work will be allowed from November 1st through January 2nd
unless approved by the Engineer.
The construction covered by the contract documents shall be
fully completed within 250 working days from the date
specified in the Notice to Proceed issued by the City of
Lubbock to the successful bidder.
4. MAINTENANCE OF DETOURS
The Contractor shall do such work as may be necessary to
maintain detours and facilities for safe public travel.
There shall be maintained in passable condition such
temporary roads and structures as may be necessary to
accommodate public travel. Temporary approaches and
crossings of intersecting highways shall be provided and
maintained in a safe and passable condition by the Contractor
at his entire expense.
5. PUBLIC SAFETY AND CONVENIENCE
The safety of the public and the convenience of traffic shall
be regarded as of prime importance. It shall be the entire
responsibility of the Contractor to provide for ingress and
egress to private property. Ingress and egress to private
property shall be provided as specified in the plans or as
directed by the Engineer.
The Contractor shall plan and execute his operations in a
manner that will cause the minimum interference with traffic.
The Contractor shall secure the Engineer's approval of his
proposed plan of operation, sequence of work and methods of
providing for the safe passage of traffic before it is placed
into operation. If,at any time during construction the
approved plan does not accomplish the intended purpose, due
to weather or other conditions affecting the safe handling of
traffic, the Contractor shall immediately make necessary
changes therein to correct the unsatisfactory conditions.
At night or otherwise, all equipment not in use shall be
stored in such manner and at such locations as not to
interfere with the safe passage of traffic. The Contractor
shall provide and maintain flaggers at such points and for
such periods of time as may be required to provide for the
safety and convenience of public travel and Contractor's
personnel, and as directed by the Engineer. Flaggers shall
be English speaking, courteous, well informed, physically and
SC -2
P"
,N%
r mentally able to effectually perform their duties in
safeguarding and directing traffic and protecting the work,
,., and shall be neatly attired and groomed at all times when on
duty. When directing, flaggers shall use standard attire,
flags and signals and follow the flagging procedures set
forth in the Texas Manual on Uniform UNIFORM TRAFFIC CONTROL
DEVICES for Streets and Highways.
6. BARRICADES AND DANGER, WARNING AND DETOUR SIGNS AND
TRAFFIC HANDLING
The Contractor shall have the sole responsibility for
providing, installing, moving, replacing, maintaining,
cleaning and removing upon completion of work, all
barricades, warning signs, barriers, cones, lights, signals
and other such type devices for handling traffic control as
indicated in the plans or as directed by the Engineer. All
barricades, warning signs, barriers, cones, lights, signals
and other such type devices shall conform to details shown on
the plans and as directed by the Texas Manual on Uniform
Traffic Control Devices.
The Contractor may provide special signs not covered by plans
to protect the traveling public against special conditions or
hazards, provided however, that such signs are first approved
by the Engineer.
Upon completion of the work, all barricades, warning signs,
barriers, cones, lights, signals and other such type devices
and evidence thereof shall be removed by the Contractor.
7. PROSECUTION OF WORK
Not more than seven (7) calendar days shall elapse between
the time subgrade preparation is begun and the time of
spreading and compaction of the base.
At no time during the period of construction shall driveways
and/or alleys be left impassable between the night hours of
6:00 a.m. to 6:00 p.m., except during the construction of the
curb and gutter for which the driveways and/or alleys shall
remain closed not more than seven (7) days including four (4)
days for curing.
The Contractor is responsible for communications with
adjacent property owners during construction that may limit
or deny access to their properties.
SC -3
8. WATER
Water for this project will be furnished by the City of
Lubbock at fire hydrants designated by the Contractor for
which there will be no charge. The Contractor will be
furnished loading racks by the City Director of Water ---
Utilities. The loading rack will be equipped with a valve
which will be pad -locked at all times except when the
Contractor's truck is loading. The valve on the loading rack
shall be used by the Contractor and at no time will the
Contractor use the fire hydrant valve. The padlock on the
rack valve shall be furnished by the Contractor. The
Contractor shall not use any fire hydrants for water loading
unless there is an authorized rack on the fire hydrant. The
Contractor will not be allowed to use water from authorized
loading racks except on City approved projects. Water, which
is supplied by the City, is intended for use in compacting
subgrade and base and maintaining dust control. It is not
the intention of the City to furnish water for use in mixing
concrete.
9. RESTRICTIONS AND REQUIREMENTS FOR CONSTRUCTION
A. The Contractor will need special permission to be
permitted to work on weekends or legal holidays and shall
do no work on any contract item before daylight or later
than one hour after sundown, except as directed and
approved by the Engineer. No work will be allowed between
November 1 and January 2, unless approved by the Engineer.
B. A 1:2 dilute emulsion treatment with MS -1 or SS -1
emulsified asphalt at a rate of .10 gallon per square
yard will be applied to the A.C. surface within ten (10)
days of the placement of the A.C. surface.
C. Temperature Requirements - (The temperature readings
to be used will be as reported by the National Weather
Service on an hourly report [Telephone Number 762-0141]).
(A) HMAC - November 1 until April 1
1. The asphaltic mixture shall not be placed
when the air temperature is below 550F.
and falling.
2. The asphaltic mixture may be placed when
the air temperature is above 50OF and
rising.
(B) HMAC - April 1•till November 1
SC -4
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1. The asphaltic mixture shall not be placed
when the air temperature is below 500F.
and falling.
2. The asphaltic mixture may be placed when
the air temperature is above 450F. and
rising.
(C) Asphalt Stabilized Base
1. The asphaltic mixture shall not be placed
when the air temperature is below 450 F and
falling.
2. The asphaltic mixture may be placed when the
air temperature is above 400 F and rising.
The engineer may use his discretion to require
a cover over the asphaltic mixture when being
hauled from the plant to the job site.
D. Unless otherwise approved by the engineer, the minimum
temperature of asphalt materials immediately after
placement by the laydown machine will be 3000 F for
asphaltic concrete surface and 2750 F for asphalt
stabilized base.
E. Standby rollers shall be located at the job site for
immediate use if needed.
F. Proof rolling will be required on subgrade, caliche base,
black base, embankment or surface. After rain showers if
deemed necessary by the Engineer each item that was
approved will be re -rolled. The proof rolling will be
performed using a self-propelled 25 ton pneumatic roller
with certified weight certificate.
G. Preliminary approval, by the Engineer, of aggregate at the
pit and crusher location shall be required, prior to
delivery to the plant. Final approval of the stockpile
material, at the hot mix plant or concrete plant, or
stockpile locations will be required by the Engineer,
after which no additional aggregate will be added to the
approved stockpile prior to entering the mixing plant.
H. During the period of construction the Contractor will not
use private driveways for turning or parking his
equipment. Any damage to sidewalks, driveways, slabs or
curb and gutter will be replaced at the Contractor's
expense.
SC -5
I. Before any portion of any street is closed to traffic the
Contractor will be required to have sufficient equipment
on the site to start the construction, and at no time
will any section of the closed area be left three (3) days
without some type of work being performed. If there is a
shortage of equipment to work on all areas of the closed
section then the Contractor will be required to provide
additional equipment.
It is the intent of these requirements to construct the
improvements listed in this contract with the least
inconvenience to the property owners and the traveling
public. In the event damage occurs to pavement in the
area of a fire hydrant, which was caused by the
Contractor's employees negligence to shut off the valve on
the loading rack, it will be the Contractor's
responsibility and expense to repair the paving and
replace curb and gutter if required by the Engineer.
10. REMOVING OBSTRUCTIONS
The Contractor shall familiarize himself with the existing
obstructions including sidewalks, trees, poles, etc., prior
to construction. It shall be the Contractor's responsibility
to remove these obstructions at the direction of the Engineer
except that the utility companies will move their equipment
at no cost to the Contractor. The Contractor will receive no
compensation for delay caused by the Utility -Companies in --
relocating or removing their equipment.
11. TEST OF MATERIALS
These requirements apply to this contract and all
construction work on all streets and alleys including new
subdivisions, streets and alley use permits.
The Contractor will bear the cost of all material tests on
hot mix design and concrete design. The City will bear the
cost on tests during construction such as density on caliche
base, gradation on concrete and paving aggregates and density
and asphalt extraction test on hot -mix and black base.
(A) Caliche Base Materials
Before materials can be used on any street,
current (not older than 30 days) test reports
will be submitted to the Engineer for approval _
and test reports will be required every 30 days
SC -6
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before this material can be used continuously on
City streets. During the construction period,
tests that fail will require re -testing by the
City lab at the contractor's expense.
(B) Concrete Mix Design (IV -2-E) and
Preconstruction Test (IV -2-D)
The Contractor or concrete supplier will submit
a mix design on the crushed stone and gravel
approximately (20) days before beginning the
concrete operation for approval by the Engineer.
Contractors or Concrete Suppliers that supply,
concrete for any contract, new -subdivision,
street or alley use permits will be required
to submit to the City Engineer a concrete mix
design every thirty (30) to forty-five (45)
days for approval. Any contractor or concrete
supplier that does not have a current mix design
on file with the City Engineer will not be per -
permitted to furnish concrete for any project within
the City of Lubbock until mix design is received.
The City of Lubbock Testing Laboratory will make
test cylinders during the construction period.
When test cylinders fail to meet the required
strength at the 7 or 28 day break, the concrete in
question will be cored by the City of Lubbock
Testing Laboratory within three days after the 7 or 28
day break. If the core samples fail to meet the required
strength, the concrete will be rejected and removed. The
cost of coring on concrete that fails on the core test
will be charged to the Contractor or Concrete
Supplier. After the mix design is submitted and
approved by the Engineer, no changes in the design
or materials will be permitted without approval of
the Engineer.
(C) Cement
Certified mill test on each car or transport.
(D) Asphalt
Certified Lab Test.
(E) Density Test
The City of Lubbock Testing Laboratory will
provide density tests on the base or subgrade.
SC -7
The City of Lubbock Lab will be the final authority on
all tests.
(F) Paving Aggregate
All crushed stone shall have a maximum of fifteen
percent (15%) loss when tested by the four (4)
cycle magnesium sulfate soundness test A.S.T.M.
C-88 as performed by the City of Lubbock Lab.
12. SUBCONTRACTORS
r
The Contractor shall not award any work to any subcontractor
without prior written approval of the Owner, which approval
will not be given until the Contractor submits to the Owner a
written statement concerning the proposed award to the
subcontractor, which statement shall contain such information
as the Owner may require.
The Contractor shall be as fully responsible to the Owner for
the acts and omissions of his subcontractors, and of persons
either directly or indirectly employed by them, as he is for
the acts and omissions of persons directly employed by him.
The Contractor shall cause appropriate provisions to be
inserted in all subcontracts relative to the work to bind
subcontractors to the Contractor by the terms of the General
Conditions and other contract documents insofar as applicable
to the work of subcontractors and to give the Contractor the
same power as regard terminating any subcontract that the _
Owner may exercise over the Contractor under any provision of
the contract documents.
Nothing contained in this contract shall create any
contractual relation between any subcontractor and the Owner
and said subcontractor will look exclusively to contractor
for any payments due subcontractor.
13. UNDERGROUND UTILITIES
The Contractor's attention is directed to the fact that
pipelines and other underground installations as may be shown
of the plans have been taken from the best available
information. There may be other pipelines or installations.
The Contractor shall save harmless the City from any and all
suits or claims resulting from damage by his operations to
any pipeline or underground installation.
It is the Contractor's responsibility, during the period of
street construction, to insure that all utility cuts in the ~
SC -8 --
limits of street construction have been properly backfilled,
compacted and the top 6" inches backfilled with 3 -sack
concrete. It is not the intent to require the Contractor to
provide for the utility cut repair but for the individual
utility company making the cut to provide their own repairs.
In the case of a City underground installation, the
Contractor may be required, at the Engineer's option, to
repair the cut with 3 -sack cement stabilized caliche at the
�.. unit price bid.
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14. WORKING HOURS
Construction work under this contract requiring an inspector
will not be performed on weekends or holidays unless the
following conditions exist:
(A) The project being constructed is essential to
the City of Lubbock's ability to provide the
r necessary services to it's citizens.
(B) Delays in construction are due to factors
outside the control of the Contractor. The
Contractor is approaching the penalty provi-
sions of the contract and Contractor can
r- show he has made a diligent effort to
complete the contract within allotted time.
Before construction work requiring an inspector is to be
performed on weekends or holidays, the Contractor must notify
the Owner's Representative not less than three (3) full
working days prior to the weekend or holiday he desires to do
work and obtain written permission from the Owner's
Representative to do such work. The final decision on
whether to allow construction work requiring an inspector on
weekends or holidays will be made by the Owner's
f
Representative.
In any event, if a condition should occur or arise at the
r` site of this project or from the work being done under this
contract which is hazardous or dangerous to property or life,
the Contractor shall immediately commence work regardless of
!'^ the day of the week or the time of day, to correct or
alleviate such condition so that it is no longer dangerous to -
property or life.
No work will be allowed from November 1st through January 2nd
unless approved by the Enc{i.neer.
SC -9
15.iPARTIAL PAYMENTS
On or before the tenth day of each month, the Contractor
shall submit to Owner's Representative an application for
partial payment. Owner's Representative shall review said
application for partial payment and the progress of the work
made by the Contractor and if found to be in order shall
prepare a certificate for partial payment showing as
completely as practical the total value of the work done by
the Contractor up to and including the last day of the
preceding month.
16. CORRECTION OF WORK AFTER FINAL PAYMENT
Neither the final payment nor certificate nor any provision
in this contract shall relieve the Contractor of
responsibility for faulty materials or workmanship, and he
shall remedy defects due thereto and pay for any damage to
other work resulting therefrom, which shall appear within a
period of one (1) year from date of final acceptance of the
project. The Owner or the Owner's Representative shall give
notice of observed defects with reasonable promptness.
17. EXTENSION OF TIME - TIME FOR COMPLETION
An extension of time will not be allowed on this project.
The project completion will be based on working days allowed
instead of calendar days allowed.
All places in these documents referring to the number of
calendar days to complete the project are hereby revised and
termed the number of working days to complete the project.
A working day is defined as a calendar day, not including
Saturdays, Sundays, or designated City of Lubbock holidays,
in which weather or other conditions not under the control of
the Contractor will permit the performance of the principal
unit of work underway for a continuous period of not less
than seven (7) hours between 7:00 a.m. and 6:OO p.m. For
every Saturday or designated City of Lubbock holiday on which
the Contractor chooses and has the proper authorization to
work, one day will be charged against the contract working
time when weather conditions will permit seven (7) hours of
work as delineated above. Work on Sunday will not be
permitted except in cases of extreme emergency and then only
with the written permission of the Engineer. If Sunday work
is permitted, working time will be charged on the same basis
as week days.
SC -10
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The Contractor shall complete the work within the number of
working days stated in these documents. For the purpose of
computation, working days will be considered to begin with
the effective date stated in the "Notice to Proceed".
The Engineer will furnish the Contractor a monthly statement
showing number of working days charged during the month,
total number of working days allowed in contract, and the
working days remaining under contract. The Contractor will
be allowed ten (10) days in which to protest the correctness
of the statement. This protest shall be in writing, and
shall show cause. Not filing a protest within the allowed
ten (10) days for any statement will indicate the
Contractor's approval of the time charges as shown on that
time statement and future consideration of that statement
will not be permitted. If the satisfactory completion of the
contract shall require unforseen work or work and materials
in greater amounts than these set forth in the contract, then
additional working days or suspension of time charge will be
allowed the Contractor equal to the time which, in the
opinion of the Engineer, the work as a whole is delayed.
If the Contractor fails to complete the contract in the
working days specified, the stated liquidated damages will be
charged for each working day thereafter.
SC -11
MATERIALS OF CONSTRUCTION
1. GENERAL —
The following paragraphs give the specifications on the
various materials which are to be used in this project. On
minor items a certificate from the manufacturer may be
required, certifying that the material or equipment meets the
specifications for such material as specified herein. All
materials shall be subject to the approval of the Engineer
before being used.
2. CONCRETE
A. Cement
Cement shall conform to "Standard Specifications and Test
for Portland Cement," A.S.T.M. Serial Designation C150, --
Type I and Type III, and shall be an approved brand.
B. Aggregate
Description
Concrete aggregates shall consist of natural, washed and
screened sand, and washed and screened gravel or clean
crushed stone conforming to "Standard Specification for
Concrete Aggregate," A.S.T.M. C-33-39 and Item No. 360 of
the Texas State Highway Specifications. Coarse aggregate
for Class "C" Concrete Street Paving shall be crushed
limestone (Brownwood Type). The aggregate shall be well
graded from coarse to fine and shall be free from injurious
amount of clay, soft or flaky materials, loam or organic
impurities. All aggregate shall be approved by the
Engineer before use. Maximum size of aggregate shall be 1-
1/2 inches. Aggregate for concrete construction proposed
to be used in this project shall have a loss not to exceed
18% when subjected to 5 cycles of the Magnesium Sulfate
soundness test A.S.T.M. C-88-76.
Stockpiles
The location of all stockpiles of aggregate shall be
approved by the Engineer prior to unloading as to zoning
requirements, smoothness and compaction of the ground, and
traffic conditions. Stockpiles of aggregate to be
incorporated into the project shall be protected from dust
M-1
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by drift fences of any suitable material approved by the
Engineer, when sandstorm possibilities exist. Care will be
,,...
taken to prevent dusty conditions in the stockpile area
J
k
_ from any sources.
C. Water
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Water shall be clean, clear, free from oil, acid or organic
matter and free from injurious amounts of alkali, salts or
r•
other chemicals.
D. Concrete Materials Test
Pre -Construction Tests
The contractor will submit test certificates from an
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approved commercial laboratory on all aggregates proposed
for use on this work. Tests should be made approximately
20 days before beginning the concrete operation.
#
The contractor will submit in advance of construction the
mix design and the result of compression tests made by a
commercial laboratory. These will be made on each type of
concrete mix design proposed for use on this project.
Tests shall be made on 6.cylinders for each mix, 3 tested
in 3 or 7 days, 3 tested at 7 or 28 days. Additional tests
shall be furnished if material source is changed or if
concrete used varies from the original design.
The Engineer shall approve the mix design after the pre -
construction tests have been completed.
!^
Construction Tests
Tests of the aggregates and the concrete will be made by
�.
the Engineer during construction to determine conformity
with the specifications. Test cylinders will be made in
accordance with the Method of Making and Curing Concrete
Compression and Flexure Test Specimens in the Field (ASTM
Designation C-31). The specimens shall be cured under
standard moisture and temperature conditions in accordance
with requirements of ASTM C-31.
R
f
Strength tests shall be made, in general, for each day's
run, or for each 50 cubic yards of concrete if a day's run
greatly exceeds this amount, but these tests may be made
entirely at the discretion of the Engineer. Strength tests
on Class "C" Concrete shall be made for approximately each
30 cubic yards, or every third truck on each day's run. -The
M-2
costs of all such testing will be borne by the City but the
Contractor shall cooperate in securing and storing samples
and shall furnish all materials required for sampling.
A strength test shall consist of five standard test
cylinders made from a composite sample obtained in
accordance with the requirements of'ASTM Designation C-172.
Two of the cylinders shall be tested at 3 or 7 days and at
7 or 28 days. The fifth cylinder shall be held available
for subsequent testing, if determined necessary by the
Engineer. The test result shall be the average of the two 7
or 28 day specimens, except that, if one specimen in the
test shows manifest evidence of improper sampling, molding,
or testing, it shall be discarded and the remaining two
strengths averaged. Should more than one specimen
representing a given test show definite defects, due to
improper sampling, molding or testing, the entire test
shall be discarded.
The result of the 7 or 28 day strength tests shall be used
as the basis for accepting or rejecting the concrete
represented.
The results of the 3 or 7 day strength tests will be
compared with the 3 or 7 day strength of the
preconstruction test cylinders for the type and slump of
the concrete being produced. Should the 3 or 7 day
strengths indicate a deficiency in the 7 or 28 day
strengths, the Engineer may require a temporary change in
proportions to correct such deficiency. Such change shall
remain in effect until the 7 or 28 day strength of the
material in question is determined, at which time the
change shall become permanent or shall be rescinded,
depending upon the results of the 7 or 28 day test.
The engineer shall record the delivery ticket number for
the concrete and the exact location in the work at which
each load represented by a strength test is deposited.
E. Concrete Design
Concrete conforming to these specifications may be "Ready
Mix" but transporting vehicles shall be operated such as to
insure delivery and placement in forms without loss or
segregation of ingredients and within one hour of mixing
time. Concrete will be mixed continuously during transit.
M-3
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Mix Design
,�. All concrete for curb and gutter, valley gutters, fillets
and alley stubs, alley slabs, drainage channels, inlet
boxes, headwalls, and medians shall have 5% air entrainment
(±1-1/2% tolerance). The concrete mix design shall be
based on water -cement ratio, and shall be as follows for
the different classes of concrete.
Minimum Sacks Max. Gal. Max. Slump
Class Cement Der C Y Water per sack in inches
A 5 6.5 4
C 6 6 3
E 5.5 5.5 3
F 6 5.5 2
The concrete mix design for the different classes shall
also be such that the compressive and flexural strength for
each class shall not be.less than the following:
Minimum Average for
Class _ any test
33 day 7 day beam strength 28 day
A --- 2100 -- 3000
C --- 3000 600 3600
E 2500 3000 --- ---
F 2900 3500 --- ---
Any concrete failing to meet these strength requirements or
air content shall be removed and replaced.
Low Strength Concrete
Any class of concrete incorporated in any part of the
project which does not meet the strength requirements
specified above, shall be considered low strength concrete.
Low strength concrete shall be removed and replaced at the
expense of the Contractor.
The Engineer shall determine the exact limits of any low -
strength concrete required to be removed and replaced under
the provisions of this paragraph. The methods to be used
in removing and replacing such concrete shall be approved
by the Engineer.
M-4
F. Classification
Unless otherwise shown on the plans: Class A concrete
shall be used for curb and gutter, drainage channels,
medians, inlet boxes, headwalls and sidewalks; Class C
concrete shall be used for concrete paving and valley
gutters constructed in thoroughfare and collector streets;
Class E concrete shall be used for valley gutters on
streets other than thoroughfares and collectors and for
alley returns, alley paving and reinforced gutter sections;
Class F concrete is used for railroad sections.
G. Mixina
All aggregates shall be accurately weighed or measured by
volume. The concrete shall be mixed in an approved batch
mixer equipped with an accurate water measuring tank, and
shall be mixed for one and one-half minutes after all
material is in the mixer. "Ready Mixed" or "Transit
Mixed" concrete may be used. If used it shall conform to
these specifications and the "Standard Specifications for
Ready Mixed Concrete," A.S.T.M. Serial Designation C94-38
and Item No. 502 of the Texas State Highway Specifications.
After mixing, the concrete shall be transported to the
forms in a manner which will prevent separation or
segregation of the aggregates and shall be placed without
undue delay. It shall be deposited as nearly as
practicable in its final position in order to avoid
rehandling or flowing of the concrete. No water shall be
added to the concrete to facilitate finishing.
H. Curing Compounds
Compounds used to form an air tight membrane over fresh
concrete surface for curing purposes shall conform to Item
526, Texas State Highway Specifications and "A.S.T.M."
Serial Designation C-309.
3. REINFORCING MATERIALS
A. Wire Mesh
Wire mesh reinforcing shall conform to "Standard
Specifications for Welded Steel Fabric for Concrete
Reinforcement" ASTM Designation A-185.
Mesh reinforcement shall be of the size shown on the plans.
All reinforcement shall be permanently marked with grade
identification marks or shall, on delivery, be accompanied
M-5
by a manufacturer's guarantee of grade and compliance with
these specifications. Reinforcement stored on the site
shall be protected from accumulations of grease, mud or
_ other foreign matter and from rust producing conditions and
shall be free from rust, scale, oil, mud or structural
defects when incorporated into alley slab, or valley
gutters.
B. Bar Reinforcing
4. JOINT MATERIAL
A. Expansion Joint Materials
Bituminous premolded expansion joint material shall conform
to Item No. 420.2 (a) of the Texas State Highway Department
Specifications.
Expansion joints shall be placed as shown on the plans or
as directed by the Engineer.
B. Joint Sealing Material
Joint sealing material shall be W.R. Meadows SOF-SEAL or
approved equivalent
M-6
Reinforcing steel to be used on this project shall conform
to A.S.T.M. Designation A-432 and shall be deformed to
A.S.T.M. 305 requirements unless otherwise shown on the
plans.
C. Fiber Reinforcement
j
(1) The fiber used shall be 100 per cent virgin
polypropylene collated, fibrillated fibers specifically
,.,
manufactured for use as concrete reinforcement,
containing no reprocessed olefin materials.
(2) The physical characteristics of the fiber to be used is
as follows: Specific Gravity - 0.91; Tensile Strength
- 70 to 110 ksi; Length of fibers - 1/211.
(3) Fibrous concrete reinforcement materials provided by
this section shall produce concrete conforming to the
requirements for each type and class of concrete listed
in Section 4-2-E. Quantities to be used shall conform
to manufacturer's recommendations, unless otherwise
directed by the Engineer.
4. JOINT MATERIAL
A. Expansion Joint Materials
Bituminous premolded expansion joint material shall conform
to Item No. 420.2 (a) of the Texas State Highway Department
Specifications.
Expansion joints shall be placed as shown on the plans or
as directed by the Engineer.
B. Joint Sealing Material
Joint sealing material shall be W.R. Meadows SOF-SEAL or
approved equivalent
M-6
5. FORMS
Forms for curb and gutter and alley paving may be of wood or
metal, of a section satisfactory to the Engineer, straight,
free of warp, and a depth equal to the depth of the concrete
section formed. Forms shall be constructed accurately to the _
line and grade as established in the field, shall be
adequately braced so that they will not move during the
placing of the concrete, and shall remain in place at least
twelve (12) hours after placing concrete. Forms shall be -
oiled with a light oil before each use and forms which are to
be re -used shall be cleaned immediately after each use and
maintained in good condition. Curb forms shall be,such that
the face of the curb can be formed by use of a face form held
in place by steel templates. Forms used for curb shall meet
all of the above specifications, except that face forms on
curb radii may be omitted if a true section and an accurate
flow can be obtained by other methods approved by the
Engineer. In no case will a concrete pour be started without
the approval of the Engineer. No forms shall be placed until
the subgrade is within one inch (111) of its finished grade.
Forms for alley slabs may be used as a guide for screeding.
Where longitudinal construction joints are required, the form _
shall be so constructed as to provide a 1-1/8 inch "V" shaped
groove in the face.
6. FLEXIBLE BASE (CALICHE)
A. Description
"Flexible Base (Caliche)" shall consist of a foundation
course for surface course or for other base courses. It
shall be composed of caliche and stone materials and shall
be constructed as herein specified in one or more courses
in conformity with the typical sections shown on plans and
to the lines and grades as established by the Engineer.
B. Material
(1) The material for the base course shall consist of
argillaceous limestone, calcareous or calcareous clay
particles, conglomerate, gravel, sand or other granular
materials. The material source shall be approved by
the Engineer. All the acceptable material shall be
crushed and returned to the screened material again in
such manner that a uniform product will be produced.
Samples for testing the material shall be taken prior
to the compaction operations.
(2) The material will conform to the requirements:
M-7
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Sieve Size 2" 1-1/2" 7/8" 1/2" #4 #40
-------------------------------------------------------
retained 0 0-5 8-30 30-55 50-70 70-90
Material passing the No. 40 sieve shall be known as
"Soil Binder" and shall meet the following requirements
when prepared in accordance with Test Method Tex 101-E
procedure:
Liquid Limit - 45 maximum; plasticity
Index - 15 maximum, 3 minimum; and,
Linear Shrinkage - 10 maximum
(3) Wet Ball Mill Test of Flexible Base Material
!' The material, when tested in accordance with Texas
Method 116-E, shall have a maximum allowable value of
t^
55.
7. ASPHALT STABILIZED BASE -PLANT MIX (THD Item 292)
A. Description
This item shall consist of base courses to be composed of a
compacted mixture of graded gravel base material from
sources approved by the Engineer, (Once the source is
selected the contractor will not change to another source
without the Engineer's approval) and asphaltic material,
mixed hot in an approved mixing plant. The percent asphalt
shall be determined by the Engineer in accordance with Test
Method Tex 126-E and Tex 204-F or other established
procedures.
P B. Materials
+^ (1) Mineral Aggregate (Graded Gravel)
The material shall be crushed and shall be screened as
necessary to meet the requirements hereinafter
specified and shall consist of durable aggregate
particles otherwise specified below.
(2) Stockpiling, Storage, Proportioning and Mixin
Prior to the mixing operations with asphaltic material,
processed mineral aggregate shall be stockpiled on an
area previously cleared of trash, weeds and grass and
smoothed as directed by the Engineer. The aggregate
stockpiles shall be not less than 10 feet in height and
constructed in layers not exceeding 18 inches in depth
or as directed by the Engineer. The plant shall have
and maintain at least a two day supply of aggregate on
hand unless otherwise directed by the Engineer.
M-8
Material shall be stockpiled in such a manner as to
prevent segregation of aggregate and mixing of
aggregate from stockpiles and/or other sources. The
gradation requirements for the individual stockpiles
and proportioning from these stockpiles will be the
contractor's responsibility.
(3) Gradation
Unless otherwise specified, the grading of the mineral
aggregate shall conform to the limitations as shown
below:
This mixture shall meet the T.H.D. 1982 Specification
Item (292)
Grade 4 -- Grading requirements percent retained -sieves
1-1/211 7/811 1/211 14 #40
0 8-30 30-55 50-70 70-90 --
Material passing the No. 40 sieve shall be known as
"Soil Binder" and shall meet the following requirements
when prepared in accordance with the Test Methods Tex
-101-E procedure:
The liquid limit shall not exceed................45
The plasticity index shall not exceed ............ 15
The linear shrinkage shall not exceed.............5
Samples for testing the material shall be taken prior
to the mixing operations. Where more than one material
is used, tests will be on the combined materials.
The mineral aggregate shall not contain more than 0.5%
moisture prior to entering the pugmill for mixing with
asphalt.
C. Asphaltic Materials
Asphalt for the paving mixture shall be of the type as
determined by the Engineer and shall meet the requirements
of Item 300, THD Specs, 1982 "Asphalt, Oils, and
Emulsions." The grade of asphalt used shall be designated
by the Engineer. The contractor shall notify the Engineer
of the source of his asphaltic material prior to design or
production of the asphaltic mixture and this source shall
not be changed during the course of the project, except
when authorized by the Engineer.
(1) Asphaltic Stabilized Mixture
M-9
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The mixture shall consist of a uniform mixture of
mineral aggregate and asphaltic material. The mineral
r.� aggregate will conform to the gradation requirements
_ specified. The asphaltic material shall form from 4 to
9% percent of the mixture by weight. 'The design
percent asphalt shall be determined in accordance with
Test Method Tex. -126-E or Test Method Tex. -204-F and
procedures outlined in the SDHPT Bulletin C-14. The
percent of asphalt in the mix shall be determined by
s• Extraction ASTM D-2172, ASTM D-4125 Method of Test for
asphalt content by Nuclear Method, Test Method Tex -210
-F or Test Method Tex. -126-F.
(2) Tack Coat
Asphaltic materials shall meet the requirements of the
Item, "Asphalts, Oils, and Emulsions THD Item 30011, as
approved by the Engineer.
(3) Tolerances
The Engineer will designate the asphalt content to be used
in the mixture after design tests have been made with the
aggregate to be used in the project. When tested as
determined by the Engineer, samples of the mixture shall
not vary from the asphalt content designated by the
Engineer by more than 0.2 percent dry weight (based on
total mixture).
Asphaltic concrete pavement and asphaltic stabilized base
shall be machine layed and the equipment shall meet the
requirements of THD 1982 specifications Item 528,
"Automatic Screed Controls for Concrete Spreading and
Finishing Machines."
8. EQUIPMENT - MIXING PLANTS BLACK BASE AND HOT -MIX
All equipment for the handling of all materials and mixing and
placing of the mixture shall be maintained in good repair and
operating condition and subject to approval of the Engineer.
Any equipment found to be defective and affecting the quality
of the mixture will be replaced.
Mixing plants may be the weigh -batch type or the continuous
mixing type or the drum mix type. All types of plants shall be
equipped with satisfactory conveyors, power units, aggregate
handling equipment, bins and dust collectors and shall consist
of the following essential pieces of equipment.
M-10
When requested by the Engineer, weigh -batch and continuous
types of mixing plants shall be equipped with automatic
proportioning devices in accordance with the requirements of
THD 1982 Specifications Item 520, "Weighing and Measuring
Equipment." If automatic recording devices are required by the
plans, they shall be in accordance with the THD Item 520,
"Weighing and Measuring Equipment."
A. Weigh -Batch Type
(1) Cold Aggregate Bin and Proportioning Device
The number of compartments in the cold aggregate bin
shall be equal to or greater than the number of
stockpiles of individual materials to be used.
The bin shall be of sufficient size to share the amount r
of aggregate required to keep the plant in continuous
operation and of proper design to prevent overflow of
material from one compartment to another. The --
proportioning device shall be such as will provide a
uniform and continuous flow of aggregate in the desired _
proportioning in a separate compartment.
(2 ) Dryer
The dryer shall be the type that continually agitates
the aggregate during heating and in which the
temperature can be so controlled that the aggregate
will not be injured in the necessary drying and heating
operations required to obtain a mixture of the
specified temperature. The burner, or combination of
burners, and type of fuel used shall be such that in
the process of heating the aggregate to the desired or
specified temperature, no residue from the fuel shall
adhere to the heated aggregate. A recording thermometer
shall be provided which will record the temperature of
the aggregate prior to the mixing operation. The dryer
shall be of sufficient size to keep the plant in
continuous operation.
(3) Screening and Proportioning
The screening capacity and size of the hot aggregate
bins shall be sufficient to screen and store the amount -
of aggregate required to properly operate the plant and
to keep the plant in continuous operation at full --
capacity. The hot bins shall be constructed so that
oversize and overload material will be discarded
through overflow chutes. Provisions shall be made to _
enable inspection forces to have easy and safe access
M-11
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to the proper location on the mixing plant where
representative samples may be taken from the hot bins
�.. for testing. The plant shall be equipped with at least
p three hot bins. The aggregate shall be separated into
the number of bins indicated on the plans or as
directed by the Engineer.
(4) Aggregate Weigh Box and Batching Scales
The aggregate weigh box and batching scales shall be of
sufficient capacity to hold and weigh a complete batch
of aggregate. The weigh box and scales shall conform to
the requirements of T.H.D. Item 520,1982, "Weighing and
Measuring Equipment.,,
(5) Asphaltic Material Bucket and Scales
The asphaltic material bucket and scales shall be of
sufficient capacity to hold and weigh the necessary
asphaltic material for one batch. If the material is
measured by weight, the bucket and scales shall conform
to the requirements of the Item, "Weighing and
Measuring Equipment." If a pressure type flow meter is
used to measure the asphaltic material, the
requirements of T.H.D. Item 520, 1982, "Weighing and
Measuring Equipment," shall apply .
(6) Mixer
The mixer shall be of the pugmill type and shall have a
capacity of not less than 3,000 pounds (of natural
aggregate mixture)in a single batch, unless otherwise
shown on the plans. The number and position of blades
shall provide a uniform mix. The mixer shall be
equipped with an approved spray bar that will
distribute the asphaltic material quickly and uniformly
throughout the mixer. Any mixer that segregates the
mineral aggregate or fails to secure a thorough and
uniform mixture with asphaltic material shall not be
used. This shall be determined by mixing the standard
batch for the required time, then dumping the mixture,
taking samples from its different parts and testing by
Test Method Tex -210-F to show that the batch is uniform
throughout. All mixers shall be provided with an
automatic time lock that will lock the discharge doors
of the mixer for the required mixing period. The dump
door or doors and the shaft seals of the mixer shall be
tight enough to prevent spilling of aggregate or
mixture from the mixer.
(7) Surge -Storage System
M-12
A surge -storage system may be used. It shall be
adequate to minimize production interruptions during
the normal day's operation. A device such as a gob --
hopper or other similar devices approved by the
Engineer to prevent segregation in the surge -storage
bin will be required. If the Contractor elects to use a
surge -storage system, scales conforming to the
requirements outlined herein will be required.
(8) Scales
Scales may be standard platform truck scales or other
equipment such as weigh hopper (suspended) scales
approved by the Engineer. All scales shall conform to
the item, "Weighing and Measuring Equipment". If truck
scales are used, they shall be placed at a location _
approved by the Engineer. If other weighing equipment
is used, the Engineer may require weight checks by
truck scales for the basis of approval of the
equipment.
B. Continuous Mixing Type
(1) Cold Aggregate Bin and Proportioning Device
Same as for weigh -batch type of plant.
(2) Dryer
Same as for weigh -batch type of plant. --
(3) Screening and Proportioning
Same as for weigh -batch type of plant.
(4) Hot Aggregate Bin
The hot bins -shall be so constructed that oversize
and overload material will be discarded through an
overflow chute. Hot aggregate bins that become
deficient in material shall activate a switch that
automatically stops the plant until proper
adjustments are made.
(5) Hot Aggregate Proportioning Device
The hot aggregate proportioning device shall be so
designed that when properly operated, a uniform and
continuous flow of aggregate into the mixer will be
maintained. _
M-13
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(6) Asphaltic Material Spray Bar
The asphaltic material spray bar shall be so
_ designed that the asphalt will spray uniformly and
continuously into the mixer.
(7) Asphaltic Material Meter
An asphaltic material recording meter meeting the
requirements of the THD Item 520, "Weighing and
Measuring Equipment", shall be placed in the
asphalt line leading to the spray bar so that the
cumulative amount of asphalt used can be accurately
determined. Provisions of a permanent nature shall
be made for checking the accuracy of the meter
output. The asphalt meter and line to the meter
shall be protected with a jacket of hot oil or
other approved means to maintain the temperature of
the line and meter at or near that temperature
specified for the asphaltic material. Unless
otherwise shown on the plans, the temperature of
the asphaltic material entering the recording meter
shall be maintained at ± 10 F of the temperature at
which the asphalt metering pump was calibrated and
set. Inability to maintain this tolerance in
temperature shall result in an adjustment of the
pay quantity for the asphaltic material.
If a pressure type flow meter is used to measure
the asphaltic material, the requirements of the
THD Item 520, "Weighing and Measuring Equipment",
shall apply.
(8) Mixer
The mixer shall be of the pugmill continuous type
and shall have a capacity of not less than 40 tons
of mixture per hour. Any mixer that has a tendency
to segregate the aggregate or fails to secure a
thorough and uniform mixing of the aggregate with
the asphaltic material shall not be used. The dam
gate at the discharge end of the pugmixer and/or
pitch of the mixing paddles shall be so adjusted to
maintain a level of mixture in the pugmixer
between the shaft and the lower paddle tip (except
at the discharge end).
(9) surge Storage System
A surge storage system may be used. It shall be
adequate to minimize.production interruption during
M-14
the normal day's operation. A device such as a gob
hopper or other similar devices approved by the
Engineer to prevent segregation in the surge
-storage bin will be required. If the Contractor
elects to use a surge storage system, scales
conforming to the requirements outlined herein will
be required.
(10) Scales
Scales may be standard platform truck scales or
other equipment such as weigh hopper (suspended)
scales approved by the Engineer. All scales shall
conform to the THD Item 520, "Weighing and Measuring
Equipment." If truck scales are used, they shall be
placed at a location approved by the Engineer. If
other weighing equipment is used, the Engineer may
require weight checks by truck scales for the basis
of approval of the equipment.
C. Drum Mix Plant
Unless otherwise shown on the plans, the Contractor may, at
his option elect to use the drum mixing process in the
mixing of asphalt stabilized base material. The plant shall
be adequately designed and constructed for the process of
mixing aggregates and asphalt in the dryer -drum without
preheating the aggregates. The plant shall be equipped with
satisfactory conveyors, power units, aggregate handling
equipment and feed controls and shall consist of the
following essential pieces of equipment.
(1) Cold Aggregate Bin and Feed System
The number of compartments in the cold aggregate bin
shall be equal to or greater than the number of
stockpiles of individual materials to be used.
The bin shall be of sufficient size to store the amount
of aggregate required to keep the plant in continuous
operation and of proper design to prevent overflow of
material of one bin to that of another bin. The feed
system shall provide a uniform and continuous flow of
aggregate in the desired proportion to the dryer. Each
aggregate shall be proportioned in a separate
compartment with total and proportional control.
The system shall provide positive weight measurement of
the combined cold -aggregate feed by use of belt scales
or other approved devices. Provisions of a permanent
nature shall be made for checking the accuracy of the
M-15
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F
measuringdevice as re "
required by the Item, Weighing and
Measuring Equipment". When a belt scale is used,
�-. mixture production shall be maintained so that the
scale normally operates between 50 percent and 100
percent of its rated capacity. Belt scale operation
below 50 percent of the rated capacity may be allowed
by the Engineer if accuracy checks show the scale to
meet the requirements of the THD Item 520, "Weighing
and Measuring Equipment", at the selected rate and it
�^ can be satisfactory demonstrated to the Engineer that
mixture uniformity and quality have not been adversely
affected.
r►
(2) Scalping Screen
A scalping screen shall be required, unless otherwise
shown on the plans, and shall be located ahead of any
weighing device.
,•. (3) Asphaltic Material Measuring System
An asphaltic material measuring device meeting the
requirements of the item, "Weighing and Measuring
Equipment," shall be placed in the asphalt line leading
to the dryer -drum mixer so that the cumulative amount
of asphalt used can be accurately determined.
Provisions of a permanent nature shall be made for
checking the accuracy of the measuring device output.
The asphalt measuring device and line to the measuring
device shall be protected with a jacket of hot oil or
other approved means to maintain the temperature of .the
line and measuring device near that temperature
specified for asphaltic material. Unless otherwise
shown on the plans, the temperature of the asphaltic
material entering the measuring device shall be
maintained at ±100F of the temperature at which the
asphalt measuring device was calibrated and set.
If a pressure type flow meter is used to measure the
asphaltic material, the requirements of the THD Item
520, "Weighing and Measuring Equipment", shall apply.
(4) Synchronization Equipment for Feed Control
System
The asphaltic
.•� with the total
such manner as
as required to
r^ ( 5 ) Drum Mix
material feed control shall be coupled
aggregate weight measurement device in
to automatically vary the asphalt feed
maintain the required proportion.
M-16
The drum mixing system shall'be of the type that
continually agitates the aggregate and asphalt mixture
during heating and in which the temperature can be so
controlled that the aggregate and asphalt will not be
damaged in the necessary drying and heating operations
required to obtain a mixture of the specified
temperature. A continuously recording thermometer shall
be provided which will indicate the temperature of the
mixture as it leaves the drum mixer.
(6) Surge Storage System
A surge storage system will be required. It shall be
adequate to minimize the production interruptions
during the normal day's operations and shall be so
constructed to minimize segregation. A device such as a
gob hopper or other similar device approved by the
Engineer to prevent segregation in the surge -storage
bin will be required.
(7) Scales
Scales may be standard platform truck scales, belt
scales or other equipment such as weigh hopper
(suspended) scales approved by the Engineer. All scales
shall conform to the THD Item 520, "Weighing and
Measuring Equipment." If truck scales are used, they
shall be placed at a location approved by the Engineer.
If other weighing equipment is used, the Engineer may
require weight checks by truck scales for the basis of
approval of the equipment.
D. Asphaltic Material Heating Equipment
Asphaltic material heating equipment shall be adequate to
heat the amount of asphaltic material required to the
desired temperature. Asphaltic material may be heated by
steam coils which shall be absolutely tight. Direct fire
heating of asphaltic materials will be permitted, provided
the heater used maintains a positive circulation of the
asphalt throughout the heater without damage to the
asphalt. Agitation with steam or air will not be permitted.
The heating apparatus shall be equipped with a recording
thermometer with a 24-hour chart that will record the
temperatures of the asphaltic material at the highest
temperature.
E. Spreading And Finishing Machine
The spreading and finishing machine shall be of a type
approved by the Engineer, shall be capable of producing a
M-17
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surface that will meet the requirements of the typical
cross section and the surface test, when required, and when
�.. the mixture is dumped directly into the finishing machine
shall have adequate power to propel the delivery vehicles
in a satisfactory manner. The finishing machine shall be
.- equipped with a flexible spring and/or hydraulic type hitch
sufficient in design and capability to maintain contact
between the rear wheels of the hauling equipment and the
pusher rollers of the finishing machine while the mixture
is being unloaded.
The use of any vehicle which requires dumping directly into
the finishing machine and which the finishing machine
cannot push or propel in such a manner as to obtain the
desired lines and grades without resorting to hand
finishing will not be allowed. Vehicles dumping directly
or indirectly into the finishing machine shall be so
designed and equipped that unloading into the finishing
machine can be mechanically and/or automatically operated
in such a manner that overloading the finishing machine
being used cannot occur and the required lines and grades
will be obtained without resorting to hand finishing.
Unless otherwise shown on the plans, dumping of the
asphaltic mixture in a windrow and then placing the mixture
in the finishing machine with loading equipment will be
permitted provided that the loading equipment is
constructed and operated in such manner that substantially
all of the mixture deposited on the roadbed is picked up
and loaded in the finishing machine without contamination
by foreign material of the mixture and excessive
temperature loss is not encountered. The loading equipment
will be so designed and operated that the finishing machine
being loaded will obtain the required line, grade and
surface without resorting to hand finishing. Any operation
of the loading equipment resulting in the accumulation and
subsequent shedding of this accumulated material into the
asphaltic mixture will not be permitted.
Automatic screed controls, if required, shall meet the
requirements of the THD Item 528, "Automatic Screed
Controls for Asphaltic Concrete Spreading and Finishing
Machines".
F. Rollers
It shall be the responsibility
rolling equipment available o
the paving mixture in place as
the laydown operation. Rollers
qualifications for their type
M-18
of the Contractor to have
n the job to properly compact
required without delay to
provided shall meet the
as follows:
(1) Pneumatic Tire Rollers (Required on all Black
Base and Hot Mix Surfacing)
The rollers shall be acceptable medium pneumatic tire
rollers conforming to the requirements of the Item,
"Rolling (Pneumatic Tires)," Type B, unless otherwise
specified on the plans.
(2) Two Axle Tandem Roller (Required on All Hot Mix
Surfacing)
This roller shall be an acceptable power driven tandem
roller weighing not less than 8 tons.
(3) Three Wheel Roller (Required on All Black Base
and Hot Mix Surfacing)
This roller shall be an acceptable power driven three
wheel roller weighing not less than 10 tons.
(4) Three Axle Tandem Roller
This roller shall be an acceptable power driven three
axle roller weighing not less than 10 tons.
(5) Trench Roller
This roller shall be an acceptable power -driven trench
roller equipped with sprinkler for keeping the wheels
wet and adjustable road wheel so that the roller may be
kept level during rolling. The drive wheel shall be not
less than 20 inches wide. The roller under working
conditions shall produce 325 pounds per linear inch of _
roller width and be so geared that a speed of 1.8 miles
per hour is obtained in low gear.
.(6) Vibratory Steel -Wheel Roller (Required on all
Black Base)
This roller shall have a minimum weight of 6 tons. The
compactor shall be equipped with amplitude and
frequency controls and specifically designed to compact
the material on which it is used, and shall be operated
in accordance with the manufacturer's recommendations
or as directed by the Engineer.
(7) Straightedges and Templates
When directed by the Engineer, the Contractor shall
provide acceptable 10 -foot straightedges for surface
M-19
testing. Satisfactory templates shall be provided as
required by the Engineer.
(8) Alternate Equipment
When permitted by the Engineer in writing, equipment
other than that specified which will consistently
produce satisfactory results may be used.
(9) Inspection
It will be the Contractor's responsibility to provide
safe and accurate means to enable inspection forces to
take all required samples, and to provide permanent
means for checking the output of any specified metering
device and to perform the calibration checks as
required by the Engineer.
G. Stockpiling, Storage Proportioning And Mixing
(1) Stockpiling of Aggregates
Prior to mixing operations with asphaltic material,
processed mineral aggregate shall be stockpiled on an
area previously cleared of trash, weeds and grass and
smoothed as directed by the Engineer. The aggregate
stockpiles shall be not less than 10 feet in height and
constructed in layers not exceeding 18 inches in depth
or as directed by the Engineer. The plant shall have
and maintain at least a two-day supply of aggregates on
hand, unless otherwise directed by the Engineer.
Material shall be stockpiled in such a manner as to
prevent segregation of aggregate and mixing of
aggregates from stockpiles and/or sources. More than
one stockpile will be permitted unless otherwise shown
on plans.The gradation requirements for the individual
stockpiles and proportioning from these stockpiles will
be the Contractor's responsibility as approved by the
Engineer.
(2) Storage and Heating of Asphaltic Materials
The asphaltic material storage shall be ample to meet
the requirements of the plant. Asphalt shall not be
heated to a temperature in excess of that specified in
THD Item 300, "Asphalts, Oils and Emulsions". All
equipment used in the storage and handling of asphaltic
material shall be kept in a clean condition at all
times and shall be operated in such manner that there
will not be contamination with foreign matter.
M-20
(3) Feeding and Drying of Aggregate
The feeding of various sizes of aggregate to the dryer
shall be done through the cold aggregate bin and
proportioning device in such a manner that a uniform
and constant flow of materials in the required
proportions will be maintained. The aggregate shall be
dried and heated to the temperature necessary to
produce a mixture having the specified temperature. In
no case shall the aggregate be introduced into the
mixture unit at a temperature more than 4000 F.
(4) Proportioning
The proportioning of the various materials entering the
asphaltic mixture shall be the responsibility of the
Contractor as approved by the Engineer and in
accordance with these specifications. The asphaltic
material and aggregates may be proportioned by weight
or by volume based on weight using the specified
equipment.
(5) Mixing
(a) Weigh -Batch Type Mixer
In the charging of the weigh box and in the
charging of the mixer from the weigh box such
methods or devices shall be used as are necessary
to secure a uniform asphalt mixture. In
introducing the batch into the mixer, all mineral
aggregate shall be introduced first and shall be
mixed thoroughly for a period of 5 to 20 seconds,
or as directed, to uniformly distribute the various
sizes throughout the batch before the asphaltic
material is added. The asphaltic material shall
then be added and the mixing continued for a total
mixing period of not less than 30 seconds. This
mixing period may be increased, if in the opinion
of the Engineer, the mixture is not uniform. The
differential in temperature of the aggregates and
the asphalt as they enter the pugmixer shall not
exceed 250 F.
Temporary storing or holding of the asphaltic
mixture by the surge -storage system may be used
during the normal day's operation. Overnight
storage will not be permitted unless authorized in
the plans or in writing by the Engineer. The
mixture coming out of the surge storage bin must be
of equal quality to that coming out of the mixer.
M-21
(b) Continuous -Type Mixer
The amount of aggregate and asphaltic material
entering the mixer and the rate of travel through
the mixer shall be so coordinated that a uniform
mixture of the specified grading and asphalt
r content will be produced. The differential in
i temperature of the aggregates and the asphalt as
they enter the pugmixer shall not exceed 250 F.
Checks on asphalt used shall be made at least twice
daily comparing the asphalt used in ten loads of
completed mix as shown on the asphalt recording
meter and the design amount for these ten loads.
The acceptable percent of variation between the
asphalt used and the design amount will be as shown
on the plans or as determined by the Engineer.
Temporary storing or holding of the asphaltic
mixture by the surge -storage system may be used
during the normal day's operation. Overnight
storage will not be permitted unless authorized in
the plans or in writing by the Engineer. The
mixture coming out of the surge -storage bin must be
of equal quality to that coming out of the mixer.
I^ (c) Drum -mix Plant
The amount of aggregate and asphaltic material
r entering the mixer and the rate of travel through
the mixing unit shall be so coordinated that a
uniform mixture of the specified grading and
asphalt content will be produced.
Temporary storing or holding of the asphaltic
mixture by the surge -storage system will be
required during the normal day's operation.
Overnight storage will not be permitted unless
authorized in the plans or in writing by the
Engineer. The mixture coming out of the surge
storage -bin must be of equal quality to that coming
out of the mixer. The mixture, when discharged
from the plant, shall have a moisture content not
greater than 1 percent by weight unless otherwise
shown on the plans and/or specified by the
Engineer. The moisture content shall be determined
in accordance with Test Method Tex -212-F, Part II.
The mixture produced from each type of mixer shall
not vary from the specified mixture by more than
the tolerances herein specified.
M-22
The asphaltic mixture from each type of mixer shall
be at a temperature between 3000 F and 3500 F when
discharged from the mixer. The Engineer will
approve the temperature within the above
limitations, and the mixture when discharged from
the mixer shall not vary from this selected
temperature more than 250 F.
H. Construction Methods
(1) Temperature Requirements
A. HMAC - November 1 until April 1
1. The asphaltic mixture shall not be placed when the
air temperature is below 550 F and falling.
2. The asphaltic mixture may be placed when the air
temperature is above 500 F and rising.
B. HMAC - April 1 until November 1
1. The asphaltic mixture shall not be placed when the
air temperature is below 500 F and falling.
2. The asphaltic mixture may be placed when the air
temperature is above 450 F and rising.
C. Asphalt Stabilized Base
1. The asphaltic mixture shall not be placed when the
air temperature is below 450 F and falling.
2. The asphaltic mixture may be placed when the air
temperature is above 400 F and rising.
The engineer may use his discretion to require a cover over
the asphaltic mixture when being hauled from the plant to
the job site. The air temperature shall be taken in the
shade away from artificial heat or as reported by the
National Weather Service on their hourly report (Telephone
No. 762-0141). It is further provided that the prime coat,
tack coat or asphalt stabilized base shall be placed only
when the general weather conditions and temperature and
moisture conditions of the subbase or subgrade,in the
opinion of the Engineer, are suitable.
If, after being discharged from the mixer and prior to
placing, the temperature of the asphaltic mixture is 250 F
or more below the temperature approved by the Engineer, -all -
M-23
PM
or any part of the load may be rejected and payment will
not be made for the rejected material.
r-
(2) Prime Coat
The prime coat shall consist of an application of 0.25
gallons per square yard of MC asphalt. The asphalt
stabilized base shall not be applied on a previously primed
course until the prime coat has completely cured to the
r- satisfaction of the Engineer.
(3) Tack Coat
Before the asphaltic mixture is laid, the surface upon
which the tack coat is to be placed shall be cleaned
thoroughly to the satisfaction of the Engineer. The surface
shall be given a uniform application of tack coat using
asphaltic materials of this specification. This tack coat
shall be applied, as directed by the Engineer, with an
approved sprayer at a rate not to exceed 0.10 gallon per
square yard of surface. Where the mixture will adhere to
the surface on which it is to be placed without the use of
a tack coat, the tack coat may be eliminated by the
Engineer. All contact surfaces of curbs and structures and
all joints shall be painted with a thin uniform coat of the
asphaltic material meeting the requirements for tack coat.
The tack coat shall be rolled with a pneumatic tire roller
when directed by the Engineer.
(4) Transporting
The asphaltic mixture, prepared as specified above shall be
hauled to the work in tight vehicles previously cleaned of
all foreign material. The dispatching of the vehicles shall
be arranged so that all material delivered may be placed,
and all rolling shall be completed during daylight hours.
The inside of the truck body may be given a light coat of
oil, lime slurry or other material satisfactory to the
Engineer, if necessary, to prevent mixture from adhering to
the body. In cool weather or for long hauls, canvas covers
and insulating of truck bodies may be required. Vehicles of
the -semi -trailer type are prohibited.
(5) Placing
Generally, the asphaltic mixture shall be dumped and spread
on the approved prepared surface with the specified
spreading and finishing machine, in such a manner that when
properly compacted, the finished coutrse will be smooth, of
uniform density, and will conform with the typical sections
shown on the plans and to the lines and grades established
M-24
by the Engineer. During the application of asphaltic
material, care shall be taken to prevent splattering of
adjacent pavement, curb and gutter and structures.
The mixture shall be spread and compacted in layers or
lifts as specified on the plans or as directed by the
Engineer. The sequence of compacting shall be such that
undue displacement of the edge of the course does not
occur. On deep lifts, the edge of the course may be rolled
with a motor grader wheel or similar equipment or supported
by blading a roll of earth against the edge of the course
prior to compacting the surface.
When the asphaltic mixture is placed in a narrow strip
along the edge of an existing pavement, or used to level up
small areas of an existing pavement or placed in small
irregular areas where the use of a finishing machine is not
practical, the finishing machine may be eliminated when
authorized by the Engineer, provided a satisfactory surface
can be obtained by other approved methods.
I. Compactincr
(1) As directed by the Engineer, the asphalt stabilized
base shall be compacted thoroughly and uniformly with
the specified rollers. In lieu of the rolling equipment
specified, the Contractor may, upon written permission
from the Engineer, operate other compacting equipment
that will produce equivalent relative compaction as the
specified equipment. If the substituted compaction
equipment fails to produce the desired compaction as
would be expected of the specified equipment, as
determined by the Engineer, its use shall be
discontinued. When directed by the Engineer, the
initial compaction shall be accomplished with pneumatic
tire rollers.
(2) When rolling with the three wheel, tandem, or vibratory
rollers, rolling shall start longitudinally at the
sides and proceed toward the center of the pavement,
overlapping on successive trips by at least half the
width of the rear wheel unless otherwise directed by
the Engineer. Alternate trips of the roller shall be
slightly different in length. On super -elevated
curves, rolling shall begin at the low side and
progress toward the high side unless otherwise directed
by the Engineer. When rolling with vibratory steel
wheel rollers, the manufacturer's recommendation shall
be followed unless directed otherwise by the Engineer.
Rolling with pneumatic -tire roller shall be done as
directed by the Zngineer. Rolling shall be continued
M-25
rr
r
until no further increase in density can be obtained
and all roller marks are eliminated. The motion of the
roller shall be slow enough at all times to avoid
_ displacement of the mixture. If any displacement
occurs, it shall be corrected at once by the use of a
rake, and of fresh mixtures where required. The roller
shall not be allowed to stand on any portion of the
pavement mixture which has not been fully compacted.
To prevent adhesion of the mixture to the roller, the
wheels shall be kept thoroughly moistened with water,
but an excess of water will not be permitted. All
rollers must be in good mechanical condition.
Necessary precautions shall be taken to prevent the
dropping of gasoline, oil, grease or other foreign
matter on the roadway, either when the rollers are in
operation or when standing.
Hand Tamping
The edges of the pavement along curbs, headers and
similar structures, and all places not accessible to
the roller, or in such positions as will not allow
thorough compaction with the rollers, shall be
thoroughly compacted with lightly oiled tamps.
J. Surface Finish
The compacted material shall conform to the typical cross
sections, lines and grades as shown on plans and directed
by the Engineer and shall have a smooth surface with a
reasonably uniform texture acceptable to the Engineer.
Unacceptable finished surfaces may be corrected by the
placement of additional mixture, all at the expense of the
Contractor.
K. Protection Of The Work And Opening To Traffic
The completed asphalt stabilized base course shall be
opened to traffic as provided by the plans and as directed
by the Engineer. All construction traffic allowed on the
base course shall comply with the State laws governing
traffic on highways unless otherwise authorized by the
Engineer. When another roadway surface is provided for the
traveling public and construction traffic through the
project, the Engineer may prohibit traffic on the completed
base course.
L. Surface Density Test
M-26
City personnel will provide density test and results
throughout the construction process at no cost to the
contractor.
Samples of the completed pavement shall be removed from
locations designated by the Engineer to enable him to
determine the composition, compaction, and density of the
pavement. Samples for each day or fraction thereof shall
be taken by City personnel. The contractor shall replace
the pavement removed from core holes at no cost to the
City. If the pavement is deficient in composition,
compaction, or thickness, satisfactory correction shall be
made as directed by the Engineer.
9. ASPHALTS
Asphalts for use on this project shall comply with Texas State
Highway Department Specification, Item 300.
10. HOT MIX ASPHALTIC CONCRETE SURFACE
(A) Aggregate
(1) General
The mineral aggregate shall be composed of coarse
aggregate, a fine aggregate, and if required, a mineral
filler. Samples of coarse aggregate, fine aggregate and
mineral filler shall be submitted to the City of Lubbock
Testing Laboratory for testing and approval by the
Engineer. Approval of other material and of the source
Of supply must be obtained from the Engineer prior to
delivery.
The combined mineral aggregate, after final processing
by the mixing plant, and prior to addition of asphalt
and mineral filler, shall have a sand equivalent value
of not less than 34, unless otherwise shown on the plans
when tested in accordance with Test Method Tex. -203-F.
The percent of flat or elongated slivers of stone for
any course shall not exceed 25%, when tested in
accordance with Test Method Tex -224-F.
Aggregate that appears susceptible to film stripping
when tested in accordance with Test Method Tex 218-F or
ASTM D-1664 shall be rejected or conditioned with an
anti -stripping agent as approved by the Engineer.
M-27
t,
Prior to stockpiling of aggregates the area shall be
cleaned of trash, weeds and grass and be relatively
smooth. Aggregates shall be separated into stockpiles
+'
of different gradation, such as a large coarse
aggregate, and a small coarse aggregate stockpile such
that the grading requirements of the specified type will
be met when the piles are combined in the asphaltic
mixture. No coarse aggregate stockpile shall contain
more than 10 percent by weight of materials that will
�-
pass a No. 10 sieve except as noted on the plans or
provided for by special provision. Fine aggregate
stockpiles may contain small coarse aggregate in the
amount of up to 15 percent by weight, (100 percent of
which shall pass a 1/4 inch sieve). However, the
coarse aggregate shall meet the quality tests specified
herein for "Coarse Aggregates." Suitable equipment of
acceptable size shall be furnished by the Contractor to
-work the stockpiles and prevent segregation of the
aggregates.
If the Contractor utilizes an asphalt continuous mix
plant, the various aggregate stockpiles of different
gradation will be stockpiled in the same manner as
described for stockpiling of aggregate for asphalt
stabilized base. That is, the stockpiling of the
aggregate shall be made up of layers of material not to
exceed two feet in height of each layer. The edge of
each succeeding layer shall extend inward so as not to
overlap the edge of the layer below. In loading from
the stockpile, the material shall be loaded by making
successive vertical cuts through the entire depth of the
stockpile.
(2) Coarse Aggregate
The coarse aggregate shall be that part of the aggregate
retained on a No. 10 sieve; shall consist of clean,
tough, durable fragments of crushed stone of uniform
quality throughout; mixing or combining crushed gravel
and crushed stone will not be permitted. The aggregate
shall be crushed to the extent that produces a minimum
of 90% crushed faces when tested in accordance with Test
Method (Tex -413-A). The aggregate shall have a
maximum of 15% loss when subjected to 4 cycles of the
Magnesium Sulfate Soundness Test (A.S.T.M. C-88-73).
When coarse aggregate is tested in accordance with Test
Method Tex -217-F, the amount of organic matter, clays,
loams or particles coated therewith or other undesirable
materials shown on the plans shall not exceed 2 percent.
M-28
When it is specified that the coarse aggregate be
sampled during delivery to the plant, from the
stockpile, or from the cold bin, the material removed
when tested in accordance with test method Tex. -217-F
(Part II, Decantation), shall not exceed 2 percent. The
plasticity index of that part of the fine aggregate
contained in the coarse aggregate passing the No. 40
sieve shall not be more than 6 when tested by the Test
Method Tex -106-E. However, where the coarse aggregate
contains less than 5% of fine aggregate and the fine
aggregate is of the same or similar material as the
coarse aggregate, the P.I. requirements for the material
passing the No. 40 sieve may be waived by the Engineer
in writing.
When it is specified that the coarse aggregate be
sampled from the hot bins and tested in accordance with
Test Method Tex -217-F (Part II Decantation), the amount
of material removed shall not exceed 1 percent.
.Tests performed as specified herein represent material
processed or placed until a subsequent test is
performed.
The coarse aggregate shall have an abrasion of not more
than 40 percent loss by weight when subjected to the Los
Angeles Abrasion Test, Test Method Tex -410-A. Coarse
aggregate from each source shall meet the abrasion
requirements specified.
(3) Fine Aggregate
The fine aggregate shall be that part of the aggregate
passing the No. 10 sieve and shall consist of sand or
screenings or a combination of sand and screenings.
The plasticity index of that part of the sand passing
the No.40 sieve shall not -be more than 6 when tested by
Test Method Tex -106-E. The plasticity index of that part
of the screenings passing the No. 40 sieve shall not be
more than 9, unless otherwise shown on plans, when
tested by Test Method Tex -106-E. Fine aggregate from
each source shall.meet plasticity requirements.
Sand shall be composed of durable stone particles free
from injurious foreign matter. Screenings shall be of
the same or similar material as specified for coarse
aggregate.
(4) Mineral Filler
M-29
polo
The mineral filler shall consist of thoroughly dry stone
dust, slate, dust, portland cement or other mineral dust
,.•• approved by the Engineer. The mineral filler shall be
free from foreign and other injurious matter.
When tested by Test Method Tex -200-F (Dry Sieve
Analysis), it shall meet the following grading
requirements:
Per Cent
By We icrht
Passing a No. 30 sieve 100
Passing a No. 80 sieve, not less than 90
Passing a No. 200 sieve, not less than 65
(B) Asphaltic Material
(1) Asphalt for Paving Mixtures
Asphalt for the paving mixtures shall be of.the
types of oil asphalt as determined by the Engineer.
The grade of asphalt used shall be as designated by
the Engineer after design tests have been made using
the mineral aggregates that are to be used in the
project. If more than one type of asphaltic concrete
mixture is specified for the project, only one grade
of asphalt will be required for all types of
mixtures, unless otherwise shown on plans. The
Contractor shall notify the Engineer of the source
of his asphaltic material prior to production of the
asphaltic mixture and this source shall not be
changed during the course of the project except by
written permission of the Engineer.
(2) Tack Coat
The asphaltic material for tack coat shall meet the
requirements for Cut -Back Asphalt RC -2, or shall be
a Cut -Back Asphalt made by combining 50 to 70
percent by volume of the asphaltic material as
specified for the type of paving mixture with 30 to
50 percent by volume of gasoline and/or kerosene. If
RC -2 Cut -Back Asphalt is used, it may, upon
instructions from the Engineer, be diluted by
addition of an approved grade of gasoline and/or
kerosene, not to exceed 15 percent by volume.
M-30
(C) Paving Mixtures
Types
The paving mixture shall consist of a uniform mixture of
coarse aggregate, fine aggregate and asphaltic material.
The grading of each constituent of the mineral aggregate
shall be such as to produce, when properly proportioned,
a mixture which, when tested in accordance with Test
Method Tex -200-F (Dry Sieve Analysis), will conform to
the limitations for master grading given below for the
type specified.
(1) Type "C" (Coarse Graded Surface Course)
Passing 7/8" sieve ............................ 100
Passing 5/8" sieve.......................98 to 100
Passing 5/8" sieve, retained on 3/8"
sieve....................................12 to 25
Passing 3/8" sieve, retained on No. 4
sieve....................................15 to 30
Passing No. 4 sieve, retained on No. 10
sieve .............. 12 to 30
Total retained on No.10
sieve.....................................53 to 65 .-
Passing No. 10 sieve, retained on No. 40
sieve .................................... 10 to 20
Passing No. 40 sieve, retained on No. 80
sieve ..................................... 5 to 15
Passing No.'80 sieve, retained on No. 200
sieve......................................5 to 15
Passing No. 200 sieve ..................... .1 to 6
(2) Modified Type "C" (Coarse Graded Surface Course)
The Engineer may designate the use of a modified
Type "C" Surface Course. This design will stay in
the limits of the above Type "C" but may vary from
the upper limits of certain sieve designations to
the lower limits of other sieve designations.
(D) Laboratory Control
M-31
r
r
If the Contractor or supplier wishes to use a material or
location not previously approved by the City of Lubbock,
,.
he will be required to request approval in writing of the
material not less than 60 days prior to anticipated use
of the material. The City of Lubbock laboratory test
results shall be the sole consideration for approval of
materials, mix designs, adequacy of procedures, etc.. The
�
results of such testing shall be evaluated and final
approval given by the City Engineer.
The City of Lubbock will utilize its own testing
laboratory to monitor the plant mixing for Black Base and
,.
Hot Mix. This laboratory control will be provided by the
City of Lubbock. A representative of the City Engineer
will be at the plant with full authority to control the
mixing operation.
In those instances where irregularities occur and the
limits of the specification are exceeded for aggregate,
�..
black base, or hot mix, appropriate corrections will be
?
required.
_
(E) Tolerances
The Engineer will designate the exact grading of the
aggregate and asphalt content to be used in the mixture.
The paving mixture produced shall not vary from the
designated grading and asphalt content by more than the
tolerances allowed herein and shall remain within the,
limitation of the master grading specified. The
respective tolerances, based on the percent by weight of
the mixture, are listed as follows:
Per Cent
by Weight
Passing 5/8" sieve, retained on 3/8"
sieve .......................................+ or -3
Passing 3/8" sieve, retained on No. 4
sieve .......................................+ or -3
Passing No. 4 sieve, retained on No. 10
sieve .......................................+ or -3
Total retained on No. 10
sieve .......................................+ or -3
Passing No. 10 sieve, retained on No. 40
sieve .......................................+ or -2
M-32
Passing No. 40 sieve, retained on No. 80
sieve ......................... ...... .+ or -2
Passing No. 80 sieve, retained on No. 200
sieve....... ..............................+ or -2
Passing No. 200
sieve .......................................+ or -2
Asphalt Material ..........................+ or -0.2
(F) Extraction And Gradation Tests
Samples of the mixture when tested in accordance with
Test Method Tex -210-F shall not vary from the grading
proportions of the aggregate and the asphalt content
designated by the Engineer by more than the respective
tolerance specified above. (See Section IV -7-C (1) for
methods of extraction of asphalt)
During construction if grading or asphalt content
exceeds the tolerances stated hereinProduction will
be discontinued until such time as the Hot -Mix
Asphaltic Concrete mixture has been corrected and
subsectuent grading and extraction tests indicate
results within the tolerance stated herein All Hot -
Mix Asphaltic Concrete mixture so constructed which
exceeds the tolerances as stated herein will be
removed and replaced at no cost to the Owner
(1) Sampling and Testin
It is the intent of this specification that the
mixture will be designed to produce a mixture of
optimum density and stability, as determined by the
Engineer, when tested in accordance with these
specifications and applicable ASTM procedures.
Samples of the completed pavement shall be removed
from locations designated by the Engineer to enable
him to determine the composition, compaction, and
density of the pavement. Samples for each day or
fraction thereof shall be taken by City personnel.
The contractor shall replace the pavement removed
from core holes at no cost to the City. If the
pavement is deficient in composition, compaction, or
thickness, satisfactory correction shall be made as
directed by the Engineer.
M-33
r�
Thoroughfare Residential
Traffic Traffic
,., (2) Design Method Min. Max. Min. Max.
_ Marshall
No. of compaction blows,
each end of specimen 75 50
Stability, Lbs. 1200 --- 1000 ---
Flow, units of 0.01 in 8 16 8 18
% Air Voids
Surfacing or Leveling 3 5 3 5
Stability and density tests are control tests. If the
laboratory stability and/or density of the mixture produced
has a value lower than that specified, and in the opinion
of the Engineer is not due to change in source or quality
of materials, production may proceed, and the mix shall be
changed until the laboratory stability and density equals
or exceeds the specified values. If there is, in the
opinion of the Engineer, an apparent change in any material
,from that used in the design mixtures, production will be
discontinued until a new design mixture is determined by
trial mixes.
11. SILO STORAGE
A silo storage system may be used during the normal day's
operation. The mixture coming out of the silo storage must be
of equal quality and temperature to that coming out of the
mixing plant. Any operation that has tendency to segregate
the mixture or fails to maintain a thorough and uniform
mixture and temperature shall not be used. If any load of
mixture coming out of the silo storage system fails to meet
the asphalt specifications or gradation requirements, then
the total contents of the silo storage system shall be
condemned.
12. BARRICADES AND SIGNS
Barricades shall be constructed of clean, sound lumber, shall -
be of first-class workmanship, and all surfaces above ground
shall be painted with an approved brand of white paint to
secure thorough coverage and a uniform white color. In no
case shall less than two coats be used. The paint for
barricade stripes shall be reflective orange and reflective
white. All dimensions, striping, lighting, painting, coloring
M-34
and placement of barricades shall be in accordance to the
details and design as set forth in the Texas Manual on
UNIFORM TRAFFIC CONTROL DEVICES for Street and Highways, Part
VI, issued in May, 1983.
The Contractor shall maintain each barricade in a neat
acceptable condition and furnish replacements when necessary
or requested by the Engineer.
Each sign shall be displayed only for the specific purpose
prescribed for it—Before any detour or temporary route is
open to traffic all necessary Regulatory, Warning and Guide
signs shall be in place.
Signs required by temporary conditions or restrictions shall
be removed immediately when those conditions cease to exist
or the restrictions are withdrawn. Guide signs directing
traffic to and on temporary routes or detours shall be
removed when no longer applicable.
Standardization is important with respect to design and
placement, and uniformity of application is equally
important. Identical conditions should always be marked with
the same type of sign, irrespective of where those particular
conditions occur.
All signs that are to convey their message during hours of
darkness shall be reflectorized or illuminated. Signs for
daytime use only may be non-reflectorized but a fluorescent
background material will be used for increased daytime
visibility if requested by the Engineer.
Where there is serious interference from extraneous light
sources, and a reflectorized sign is not likely to be
effective, an illuminated sign will be used.
Construction warning signs shall have a black legend on an
orange background and shall conform to the standards as to
size, shape and color as outlined in the Texas Manual on
UNIFORM TRAFFIC CONTROL DEVICES mentioned above.
Barricades, flares, and signs are a necessity in the
construction involved in this contract. The provision of _
these items by the Contractor should be considered in the bid
prices submitted, as no separate compensation will be made,
unless indicated otherwise in the plans or the proposal.
No work will be permitted on any project prior to
installation of barricades or other warning devices at the
beginning and end of the construction area.
M-35
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r -
"t 13. CORRUGATED STEEL PIPE
A. Fabrication
Corrugated steel pipe shall be galvanized, full circle
pipe conforming to ASTM A760. The pipe shall be a
?^ minimum of 16 gage with outside and inside coating a
'4 minimum of 10 mils. Corrugation shall be 2-2/3 inches by
1/2 inch.
r B. Coupling Bands
Except as otherwise required herein, coupling bands and
other hardware for galvanized steel pipe shall conform
with the requirements of AASHTO Designation: M 36 for
steel pipe. Field joints shall maintain pipe alignment
.- during construction and prevent infiltration of side
material during the life of the installation.
Coupling bands shall be not more than 3 nominal sheet
thickness lighter than the thickness of the pipe to be
connected and in no case lighter than 0.052 inch.
Coupling bands shall be made of th same base metal and
coating (metallic or otherwise) as the pipe.
,•- Coupling bands shall lap equally on each of the pipe
being connected to form a tightly closed joint after
installation.
Pipes furnished with circumferential corrugations shall
be field jointed with corrugated locking bands. This
includes pipe with helical corrugations which has
*� reformed circumferential corrugations on the ends. The
{ locking bands shall securely fit into at least one full
circumferential corrugation on each of the pipe ends
',.. being coupled. The minimun width of the corrugated
locking bands shall be 10-1/2 inches wide for 2-2/3 inch
x 1/2 inch corrugation.
Helical pipe without circumferential end corrugations
will be permitted only when it is necessary to join a new
pipe to an existing pipe which was installed with no
circumferential end corrugations. In this event pipe
furnished with helical corrugations at the ends shall be
field jointed with either helically corrugated bands or
with bands with projections (dimples). The minimum width
of helically corrugated bands shall be 12 inches wide for
1/2 inch deep helical end corrugations.
M-36
Bands with projections shall have circumferential rows of
projections with one projection for each corrugation.
The width of bands with projections shall be not less
than the following:
12 inches wide for pipe diameters up to and including 72
inches. The bands shall have two circumferential rows of
projections.
16-1/4 inches wide for pipe diameters of 78 inches and
greater.- The bands shall have four circumferential rows
of projections.
Unless otherwise shown on the plans, all bolts for
coupling bands shall be 1/2 inch diameter. Bands 12
inches wide or less will have a minimum of 2 bolts, and _
bands greater than 12 inches wide shall have a minimum of
3 bolts.
Galvanized bolts may be hot dip galvanized in accordance
with the requirements of AASHTO Designation: M 232,
mechanically galvanized to provide the same requirements
as AASHTO Designation: M 232, or electro -galvanized per _
ASTM A 164 Type RS.
M-37
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d
is
Details of Construction
1. CONCRETE
A. Curb and Gutter (Class A -Concrete)
Description
T' This item shall consist of Portland Cement 24" concrete
curb and gutter or 24" separate gutter as shown on the
plans or as directed by the engineer, and shall be
constructed of Class A concrete. Included in the curb and
gutter item is the subgrade preparation and the filling
and shaping of the area behind the curb.
1. Curb Openings
Separate gutter sections will be placed only across alleys
and driveways presently in use or where definitely planned
for future property improvements. It shall be the
responsibility of the contractor to contact the property
owner and determine the proper location of driveways
before curb and gutter is constructed. All gutters across
new or proposed driveways must meet the requirements set
forth in the City Sidewalk and Driveway Regulations,
Ordinance Number 1466 and amendments thereto and gutters
across existing driveways will be required to conform to
said regulations if no hardship to the existing property
improvements is involved. In any event, all curb and
gutter to be poured must have the engineer's approval as
to driveway widths and location, in addition to the
section, and line and grade approval before any pour is
started on any curb and gutter unit.
2. Excavation and Subgrading (See Section V-2)
Excavation for the curb and gutter shall be made with the
excavation of the entire street. The excavation shall be
done to the lines and grades set by the engineer and in
such a manner as to require a maximum 1/2" (inch) of fill
to bring the subgrade to the correct elevation. Subgrade
that is undercut 1" (one inch) or more shall be brought to
the correct elevation by scarifying, wetting, disking,
blading, rolling and compacting to 95% Standard Proctor
Density (A.S.T.M. D-698) with pneumatic rolling to correct
elevation prior to setting forms. Before completion of
curb and gutter, all traffic signs and street name markers
found in the way of paving will immediately be relocated
behind the proposed curb and gutter by the Contractor. -
D -1
3. Setting Forms
Forms for concrete and gutter shall be set to the lines
and grades established by the engineer after the subgrade
has been prepared. The forms shall be held together and in
place in such a manner that they will not move during the
placing and working of the concrete. The forms shall be
cleaned and oiled prior to pouring concrete. Face forms
and construction joints (removable metal plates) shall be
set to hold the concrete for the curb in place until it is
to be finished.
Forms for radii shall be set in the same manner as the
straight forms except that no face form will be required
if a true section is obtained by other methods. The radii
forms shall be set in such a manner that the curve will be
true.
4. Placement (Including Making Joints
5
Sufficient concrete shall be placed to allow for shrinkage
and extra material for finishing, and the concrete shall
be floated and troweled to the approximate section, and
only after the concrete receives a partial set shall the
face forms be removed. The section shall then be shaped to
the true cross-section by the use of a metal -screed which
is shaped to the true cross-section.
A "mule" screed shall be used only to shape to true cross-
section when topping material is provided and pushed along
on the front edge of the mule.
Curb and gutter shall be constructed with an expansion
joint at the tangent point of each return at intersections
and at intervals of no more than forty (40) feet between
the intersections. Forty feet intervals may be waived if
curb and gutter machine is used. Expansion joints shall be
of the material hereinbefore specified. Construction
joints formed by removable metal plates (templates)
accurately shaped to the cross-section of the curb and
gutter shall be located at the mid -point of each section
between expansion joints or as directed by the engineer.
Contraction joints shall be placed at ten foot intervals.
All joints shall be perpendicular to the surface of the
concrete and to the axis of the section.
Finishing
A ten (10) foot metal "straight -edge" shall be used to
strike the flow line to grade, continuously along the flow
line of the gutter. This operation shall be followed with
D-2
a four (4) foot spirit level to assure the continuous
grade down the flow -line the length of the gutter.
Curb and gutter shall be finished uniformly by wood
trowelling to an accurate cross-section. Extra water will
not be added for finishing. The final finish will be
accomplished with a brush, the last stroke being one from
the back of curb to the lip of gutter. Both sides of all
joints, the lip of gutter, and the back edge of the curb
shall be finished with a 1/4" radius edging tool before
the final brushing. Curves at the top and bottom of the
section shall present a uniform appearance without "waves"
in the face of the curb or "pockets" in the gutter.
`
Concrete shall not be poured during sand storms. Concrete
shall be protected to maintain temperature of not less
than 50 degrees F. for five days after placement. If
aggregate and water are heated, they shall not be heated
above 90 degrees F. Concrete shall not be placed when the
•-
ambient temperature is less than 40 degrees F. It shall be
the responsibility of the Contractor to anticipate as
nearly as possible changes in weather conditions which
would affect the placement and protection of the concrete,
and be prepared to protect freshly placed concrete when
sudden changes in the weather make such protection
necessary.
6. Removing Forms
,-
Special care is required of the Contractor in his removing
of pins and of forms. Pins shall be pulled from the ground
to free forms. If hammering is found to be necessary, a
light, one (1) pound hammer shall be used. The contractor
shall not place forms or pins on newly finished concrete.
Loading and unloading of forms from a truck shall be
executed by two workmen. It is the duty of the Contractor
to remove any warped forms found in any section of forms,
i
before it is poured. When forms are pointed out as
,defective, those forms shall then be removed from the job
�...
site and not returned until they have been inspected by
the Engineer.
7. Machine Laid Curb and Gutter
Class A concrete shall be used for machine laid curb and
gutter. The slump of the concrete shall be as directed by
.-
the Engineer. Reinforcing steel, if required, shall
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conform to Section 3 under Materials of Construction.
The curb and gutter shall be laid by an extrusion machine
approved by the Engineer. Immediately prior to placing the
D-3
curb and gutter, the previously approved foundation shall
be thoroughly cleaned.
The line for top of curb shall be maintained from a
guideline set by the Contractor from survey marks
established by the Engineer. Curb outline shall strictly
conform to the details shown on the plans.
The approved mix shall be fed into the machine in such a
manner and at such consistency that the finished curb will
present a well compacted mass with a surface free from
voids and honeycombs and true to established shape, line,
and grade.
Additional surface finishing shall be performed
immediately after extrusion. Extra water will not be added
for finishing. Unless otherwise specified by the Engineer,
joints shall be constructed as follows: Expansion joints
shall be located at each end radius at intersections and
alley returns and at the beginning of the pour, and dummy
grooved joints shall be spaced at 10 foot intervals
between the expansion joints.
8. Curing
All concrete work shall be covered with heavy water -proof
type paper to prevent loss of moisture and to prevent
direct sunlight from striking the concrete, as soon as it
has set sufficiently enough to prevent marking.
In lieu of this method of curing, the curb and gutter may
be cured by applying a liquid membrane coating to all
exposed surfaces, provided such material and method is
first approved by the Engineer.
9. Filling Behind Curb
After the forms are removed and the concrete has cured,
the contractor shall fill the area behind the curb with
top soil. The area between the sidewalk and the curb or
property line and curb, if no sidewalk exists, shall be
leveled and sloped toward the curb in a manner
satisfactory to the property owner and/or Engineer. Fill
should be done prior to placement of base materials.
10. Replacement of Damaged Curb and Gutter or Gutter
No patching of any nature shall be allowed in repairing
any damage to curb and gutter which occurs during the
construction process of paving improvements in any unit
D-4
This item shall be constructed of class C concrete for
thoroughfare or collector street valley gutters and Class
E concrete for residential street valley gutters and
consists of the construction of an eight (8) inch concrete
slab on thoroughfare or collector streets or a (6) inch
concrete slab on residential streets reinforced with 4 -
Number 3 bars on one and one-half (1-1/2) foot spacing for
5 foot wide valley gutters,(Cross bars shall be #3 bars 4
1/2 feet long) or with 611x6" 6 gauge wire mesh. Fillet
areas shall be reinforced as shown on the plans and
constructed to the lines and grades as shown on the plans
and as designated by the Engineer. -Details of construction
D-5
'unit.
r
prior to the acceptance of said Where damage occurs,
the section of curb and gutter or gutter containing the
...
damaged portion shall be removed to the nearest joints and
_
shall be replaced with new construction, prior to
surfacing of that section of street.
Concrete surface finish marred by vandals, rain or sand
during setting time shall be immediately repaired with an
approved epoxy material; all abused concrete surface,
+�
along with structural damage and defective flow line found
at time of surfacing shall be handled as described in
sentence 2 above.
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B.
Reinforced Concrete 24" Separate Gutter (Class E
Concrete) Description
This item shall consist of Portland cement 24" separate
gutter constructed in accordance with the typical curb and
gutter sections included in these specifications and at
,.•.
locations as shown on the plans or as directed by the
Engineer.
1.
Subgrade Preparation (See Section V-2)
2.
Reinforcing Steel - See Section 3 Under Materials of
Construction
3.
Placement of Reinforcement
�.
Care shall be taken to tie the (3) three horizontal # 3
bars to the (3) three vertical # 3 bar pins at a point 3"
above the bottom.
C.
Reinforced Concrete Valley Gutters (Class C and Class E
�
Concrete)
Description
This item shall be constructed of class C concrete for
thoroughfare or collector street valley gutters and Class
E concrete for residential street valley gutters and
consists of the construction of an eight (8) inch concrete
slab on thoroughfare or collector streets or a (6) inch
concrete slab on residential streets reinforced with 4 -
Number 3 bars on one and one-half (1-1/2) foot spacing for
5 foot wide valley gutters,(Cross bars shall be #3 bars 4
1/2 feet long) or with 611x6" 6 gauge wire mesh. Fillet
areas shall be reinforced as shown on the plans and
constructed to the lines and grades as shown on the plans
and as designated by the Engineer. -Details of construction
D-5
are the same as for curb and gutter where they can'be
directly applied.
1. Subgrade Preparation (See Section V-2)
2. Reinforcing Steel - See Section 3 under Materials of
Construction.
3. Placement of Reinforcement
Care shall be taken to hold the steel in the center of the
slab, high chairs or precast concrete blocks shall be
located at three (3) foot centers. Lapping distance shall
be 40 diameters, and the lap shall be tied at three points
with wire if steel bars are used.
D. Reinforced Alley Paving Slab and Alley Returns (Class E
Concrete)
Description
This item shall consist of reinforced concrete paving of
variable thickness (5" to 7-1/211) constructed in the
center 10 feet of alleys and shall be constructed of Class
E concrete. All alley paving and alley returns shall be
constructed in accordance to the Alley Paving Details.
1. Forming
Forms for alley slab shall be placed where necessary to --
form the outside edge of slab (where slab isnot bordered
by concrete curb and gutter or other permanent
improvements such as building, docks, etc.)and where
necessary to form construction and expansion joints (See
"Alley Paving Details" on plans). On all edges, joints,
etc. to be formed, the forms shall extend the entire depth
of concrete.
2. Subgrade Preparation (See Section V-2)
3. Reinforcing
Care shall be taken to securely hold the welded wire mesh _
3" above the bottom of the slab by use of high chairs or
pre -cast concrete blocks.
Concrete shall not be poured during sandstorms. Concrete
shall be protected to maintain temperature of not less
than 50 degrees F. for five (5) days after placement. If
aggregate and water are heated, they shall not be heated --
above 90 degrees F. Concrete shall not placed when the
D-6
I
"d ambient temperature is less than 40 degrees F. It shall be
the responsibility of the Contractor to anticipate as
I,.•• nearly as possible changes in weather conditions which
{ could effect the placement and protection of the concrete,
and to be prepared to protect freshly placed concrete when
r� sudden changes in the weather make such protection
necessary.
4. Finishina
4
w
Concrete shall be deposited so as to conform roughly to
the finished cross-section. Sufficient concrete shall be
placed to allow for shrinkage and extra material for
finishing. Extra water will not be added for finishing.
The shape and flow line of the alley paving slab may be
established by the use of two (211) inch by four (411) inch
wood screeds, or other approved removable devices,
accurately staked to line and grade. If such devices are
used they shall be in place before the final finishing of
the subgrade and the subgrade shall be finished so that
the concrete slab will be of the proper depth. The
concrete shall be "struck off" to the true section and
finished smooth by floating and troweling. The final
finish shall be provided by brushing to provide a nonskid
surface for traffic. Particular care shall be taken in the
final troweling and finishing so that the finished slab
presents a smooth straight surface without waves in the
edge and without pockets in the flow line.
5. Curing and Protection
All concrete work shall be covered with burlap or other
suitable material as soon as it has set sufficiently to
prevent marking and kept wet continuously for at least (4)
days. Care shall be taken to prevent mechanical injury to
concrete work during this period and until the work is
accepted. Any work damaged prior to acceptance shall be
repaired by the Contractor at his own expense and to the
satisfaction of the City Engineer.
The City Sanitation Department shall be notified of all
alley return and alley paving construction and if
possible, the length of time said return and/or allev
shall be closed to traffic. The Contractor shall properly
flare and barricade alley returns and alleys during the
period of construction and as long afterward as the
Engineer may require for curing and achieving strength.
Before opening alley returns to traffic, the contractor
shall properly fill and level by hand, (no maintainer
shall be used until full strength of concrete is
D-7
achieved), the adjacent approaches from the street and
alley. In all cases, no alley or alley return shall be
opened to traffic without the approval of the City
Engineer.
6. Removing Forms
Special care is required of the Contractor in his removing
of pins and moving of forms. Pins shall be pulled from the
ground to free forms. If hammering is found to be
necessary a light, one (1) pound hammer shall be used. The
contractor shall not place forms or pins on newly finished
concrete. Loading and unloading of forms from a truck
shall be executed by two workmen. It is the duty of the
Contractor to remove any warped forms found in any section
of forms, before it is poured. When forms are pointed out
as defective, those forms shall then be removed from the
job site and not returned until they have been inspected
by the Engineer.
7. Replacement of Damaged Concrete or Concrete Surface
Only patching of very minor nature will be allowed in
alley paving. Any substantial damage occurring to the
alley paving prior to the acceptance of the unit in which
the damage occurs will be remedied by removal and
replacement of the entire section or sections of alley
paving that has been damaged. Any slab removed to a joint
other than a doweled expansion joint will be replaced
using joint section B -B in the Special Detail Sheets of
these specifications. Extreme care shall be taken by the
Contractor during "Setting -Up" period to prevent vandals,
sand or rain from marring the surface finish to avoid
being handled as described in sentence 2, above.
E. Reinforced Concrete Median Curb (Class A Concrete)
This item shall consist of reinforced concrete slab (611)
inches thick and may be placed on asphalt surface on
caliche base, or on asphalt surface on concrete base.
Median slab shall be dowled as shown on the plans. Details
of concrete placement, finishing, and curing shall be used
where applicable.
1. Subgrade Preparation (See Section V-2)
F. Reinforced Concrete Railroad Crossing (Class F Concrete,
Description
D-8
Materials
t
1. Cement
The cement shall be Type I or Type III standard brand of
Portland cement. If the use of high early strength cement
is not specified, and the Contractor desires to use it, he
shall obtain written permission of the Engineer and shall
D-9
This item shall consist of the construction of Class F
reinforced concrete as shown on Concrete Railroad Crossing
Details. (File #2-B-92 [2]).
.-►
1. Subarade Preparation (See Section V-2)
a
2. Reinforcing Steel Bars to be Used)
Reinforcing steel to be used on this project shall conform
r
to A.S.T.M. Designation A-4132 and shall be deformed to
A.S.T.M. 305 requirements.
3. Placement of Reinforcement
Care shall be taken to hold the (1/211) bars above the
bottom of the foundation slab and above the railroad ties
�^
as shown on the plans. In the top slab the vertical and
horizontal bars shall be securely tied with wire.
G. Reinforced Concrete Drainage Slabs (Class A Concrete)
This item shall consist of a concrete slab (511) thick and
containing wire mesh reinforcing which shall conform to
"Standard Specification for Welded Steel Wire Fabric For
Concrete Reinforcement" ASTM Designation A-185, or
approved fiber reinforcement.
1. Subarade Preparation (See Section V-21
H. Concrete Pavement - Class C Concrete Description
This item shall consist of a pavement of portland cement
concrete, with reinforcement as shown on plans,
constructed as herein specified on the prepared subgrade
and one inch of sand cushion or other base course in
conformity with the thickness and typical cross sections
,r
shown on plans and to the lines and grades established by
the Engineer. Concrete shall be considered of satisfactory
quality provided it is made (a) of materials accepted for
the job, (b) in the proportions established by the
Engineer and (c) Mixed, placed, finished and cured in
accordance with the requirements herein specified.
Materials
t
1. Cement
The cement shall be Type I or Type III standard brand of
Portland cement. If the use of high early strength cement
is not specified, and the Contractor desires to use it, he
shall obtain written permission of the Engineer and shall
D-9
assume all additional costs incurred by the use of such
cement. Type I and Type III cement shall conform to the
requirements of ASTM C150. When Type III cement is used,
_ the average strength at the age of 7 days shall be higher
than that attained at 3 days. Either the tensile or the
compression tests may be used for either type cement. In
addition to the requirements of ASTM Designation 0150, the
specific surface area of Type I cement shall not exceed
2,000 square centimeters per gram as measured by the
Wagner Turbidmeter in accordance with Test Method Tex -310-
D.
2. Admixtures
Unless otherwise provided in the plans or special
provisions, approved types of admixtures to minimize
segregation, to improve workability, or to reduce the
amount of mixing water may be used in the rate of dosage
specified by the Engineer. Admixtures shall not be used to
replace cement.'Admixtures shall comply with all the
requirements and be measured and dispensed in accordance
with T.H.D. Item 437, "Concrete Admixtures".
3. Coarse Aggregate.
Coarse aggregate shall consist of durable particles of
crushed limestone (Brownwood Type) of reasonably uniform
quality throughout, free from injurious amounts of salt,
alkali, vegetable matter or other objectionable material,
either free or an adherent coating on the aggregate. It
shall not contain more than 0.25 percent by weight of clay
lumps, nor more than 1.0 percent by weight of shale nor
more than 5.0 percent by weight of laminated and/or
friable particles when tested in accordance with Test
Method Tex -413-A.
Coarse aggregate shall have a wear of not more than 45
percent when tested according to Test Method Tex -410-A and
when tested by standard laboratory methods shall meet the
following grading requirements:
Retained on 1-3/4" sieve......................0%
Retained on 1-1/2" sieve................0 to 5 %
Retained on 3/4" sieve.................30 to 65%
Retained on 3/8" sieve.................70 to 90%
Retained on No. 4 sieve...............95 to 100%
D-10
1
Loss by Decantation Test
Method Tex -406-A ...1.0% Maximum
All aggregate shall be handled and stored in such a manner
as to prevent size segregation and contamination by
foreign substances. When segregation is apparent, the
aggregate shall be remixed. At the time of its use, the
aggregate shall be free from frozen material. Aggregate
that contains more than 0.5 percent free moisture by
weight shall be stockpiled for at least 24 hours prior to
use.
Adequate storage facilities shall be provided for all
approved materials. The intermixing of nonapproved
materials with approved materials either in stockpiles or
in bins will not be permitted. Aggregates from different
sources shall be stored in different stockpiles unless
otherwise approved by the Engineer.
Aggregates shall be stockpiled in such a manner to prevent
segregation, and maintained as nearly as possible in a
uniform condition of moisture.
Each aggregate stockpile shall be reworked with suitable
equipment as required by the Engineer to remix the
material to provide uniformity of the stockpile.
4. Fine Aggregate.
Fine aggregate shall consist of sand or a combination of
sands, and shall be composed of clean, hard,
durable,uncoated grains. Unless otherwise shown on plans,
the acid insoluble residue of the fine aggregate shall be
not less than 28 percent by weight when tested in
accordance with Test Method Tex -612-J.
5. Fine Ag-gregate Exclusive of Mineral Filler
Fine aggregate shall be free from injurious amounts of
salt, alkali or vegetable matter. It shall not contain
more than 0.5 percent by weight of clay lumps. When
subjected to the color test for organic impurities, Test
Method Tex -408-A, the fine aggregate shall not show a
color darker than the standard.
Unless specified otherwise, fine aggregate shall meet the
following grading requirements:
Retained on 3/8" sieve.....................0%
Retained on No.4 sieve................0 to 5%
D-11
Retained on No. 8 sieve..............0 to 20%
Retained on No. 16 sieve ............ 15 to 30%
Retained on No. 30 sieve ............ 35 to 75%
Retained on No. 50 sieve ............ 70 to 90%
Retained on No. 100 sieve .......... 90 to 100%
Retained on No. 200 sieve .......... 97 to 100%
Fine aggregate will be subjected to the Sand Equivalent
Test (Test Method Tex -203-F). The sand equivalent value
shall not be less than 80, or less than the value shown on
the plans, whichever is greater.
6. Mineral Filler
Mineral filler shall consist of clean stone dust, crushed
sand, crushed shell or other approved inert material. When
tested in accordance with Test Method Tex -401-A, it shall
meet the following requirements:
Retained on No. 30 sieve........................0%
Retained on No. 200 sieve.................0 to 35%
At the time of its use the mineral filler shall be free
from frozen material, and aggregate containing foreign
material will be rejected.
7. Mixing Water
Water for use in concrete and for curing shall be free
from oil, acids, organic matter or other deleterious
substances and shall not contain more than 1,000 parts per
million of chlorides as CL. nor more than 1,000 parts per
million of sulfates as SO4.
Water from municipal supplies approved by the State Health
Department will not require testing, but water from other
sources will be sampled and tested before use.
Test procedure shall be in accordance with AASHTO
Designation: T 26.
8. Steel Dowel Bars ~
Steel bar dowels, if used in accordance with provisions of
project plans, shall be of the size and type indicated on
D-12
Where prefabricated wire mats are specified or permitted,
the wire shall be cold worked steel wire conforming to the
requirements of ASTM A 496, except that steel shall be
made by open-hearth, electric -furnace, or basic oxygen
processes. The prefabricated wire mats shall conform to
the requirements of ASTM A 497. Mats that have been bent
or wires dislocated or parted during shipping or project
handling shall be realigned to within one-half inch of the
original horizontal plane of the mat. Mats with any
portion of the wires out of vertical alignment more than
one-half inch after realignment and/or wires dislocated or
mutilated so that, in the opinion of the Engineer, they do
not represent the original mat, shall be rejected. The
mats may be clamped or wired so that the mats will retain
the horizontal and vertical alignment as specified by the
plans or as approved by the Engineer. Deformed wire may be
used for tie bars and load transfer bars that require
bending.
When fabricated steel bar or rod mats are specified, the
mats shall meet the requirements of ASTM A-184.
10. Mechanical Vibratory Equipment
All concrete placed for pavement shall be consolidated by
approved mechanical vibrators designed to vibrate the
concrete internally. The internal type will be used for
full -depth placement. Vibratory members shall extend -
across the pavement practically to, but shall not come in
D-13
plans and shall be open-hearth, basic oxygen or electric -
furnace steel conforming to the mechanical properties
specified for grade 60 in ASTM Designation: A615. The free
end of dowel bars shall be smooth and free of shearing
t
_
burrs.
9. Steel Reinforcement
Unless otherwise shown on the plans, steel reinforcing
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bars as required including the tie bars shall be open-
hearth, basic oxygen or electric -furnace new billet steel
`
of Grade 60 or Grade 40 for concrete reinforcement. Bars
that require bending shall be Grade 40 conforming to
requirements of ASTM A-615.
High yield reinforcing steel shall be either (1) open-
hearth, basic oxygen or electric -furnace new billet steel
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conforming to the requirements of ASTM A-615 Grade 60 or
(2) rail steel bars for concrete reinforcement, conforming
to the requirements of ASTM A-616 Grade 60. (Bars produced
by piling method will not be accepted).
r'
Where prefabricated wire mats are specified or permitted,
the wire shall be cold worked steel wire conforming to the
requirements of ASTM A 496, except that steel shall be
made by open-hearth, electric -furnace, or basic oxygen
processes. The prefabricated wire mats shall conform to
the requirements of ASTM A 497. Mats that have been bent
or wires dislocated or parted during shipping or project
handling shall be realigned to within one-half inch of the
original horizontal plane of the mat. Mats with any
portion of the wires out of vertical alignment more than
one-half inch after realignment and/or wires dislocated or
mutilated so that, in the opinion of the Engineer, they do
not represent the original mat, shall be rejected. The
mats may be clamped or wired so that the mats will retain
the horizontal and vertical alignment as specified by the
plans or as approved by the Engineer. Deformed wire may be
used for tie bars and load transfer bars that require
bending.
When fabricated steel bar or rod mats are specified, the
mats shall meet the requirements of ASTM A-184.
10. Mechanical Vibratory Equipment
All concrete placed for pavement shall be consolidated by
approved mechanical vibrators designed to vibrate the
concrete internally. The internal type will be used for
full -depth placement. Vibratory members shall extend -
across the pavement practically to, but shall not come in
D-13
contact with the side forms. Mechanically operated
vibrators shall be operated in such a manner as to not
interfere with the transverse or longitudinal joints.
Separate vibratory units shall be operated at sufficiently
close intervals to provide uniform vibration and
consolidation to the entire width of the pavement. The
frequency in air of the internal spud type vibratory units
shall be not less than 8,000 cycles per minute and not
less than 5,000 cycles per minute for tube types and the
method of operation shall be as directed by the Engineer.
The Contractor shall have a satisfactory tachometer
available for checking the vibratory elements.
The pavement vibrators shall not be used to level or
spread the concrete but shall be used only for purposes of
consolidation. The vibrators will not be operated where
the surface of the concrete, as spread, is below the
elevation of the finished surface of the pavement, except
for the first lift of concrete where the double strike off
method of placement is employed, and the vibrators shall
not be operated for more than 15 seconds while the machine
upon which they are installed is standing still.
Approved hand manipulated mechanical vibrators shall be
furnished in the number required for provision of proper
consolidation of the concrete along forms, atjoints and
in areas not covered by mechanically controlled vibrators.
These vibrators shall be sufficiently rigid to insure
control of the operation position of the vibrating head.
Complete and satisfactory consolidation of the concrete
pavement is a most important requirement of this
specification. Cores taken shall be carefully examined for
voids, honeycombing or other evidence of incomplete
consolidation. If such evidence is present, changes in the
consolidation procedures and/or equipment will be made to
insure satisfactory consolidation.
11. Finishing
Machine -Finishing. All concrete pavement shall be finished
mechanically with approved power -driven machines, except
as herein provided. Hand -finishing will be permitted on
the transition from a crowned section to a superelevated
section without crown or curves, and on straight line
superelevation sections less than 300 feet in length.
Hand -finishing will also be permitted on that portion of a
widened pavement outside the normal pavement width, on
sections where the pavement width is not uniform, or
D-14
required monolithic widths are greater than that of
available finishing machines.
Machine -finishing of pavement shall include the use of
power -driven spreaders, power -driven vibrators, power -
driven transverse strike -off, and screed, or such
alternate equipment as may be substituted and approved by
the Engineer.
!'^ All concrete shall be consolidated by a mechanical
vibrator. As soon as the concrete has been spread between
the forms, the approved mechanical vibrator shall be
,. operated to consolidate the concrete and remove all
voids. Hand -manipulated vibrators shall be used for areas
not covered by the mechanical vibratory unit.
The transverse finishing machine shall first be operated
to compact and finish the pavement to the required section
and grade, without surface voids. The machine shall be
operated over each area as many times and at such
intervals as directed. At least two trips will be required
and the last trip over a given area shall be a continuous
run of not less than 40 feet. After completion of
finishing with the transverse finishing machine a
transverse drag float may be used.
The consistency of the concrete as placed should allow the
completion of all finishing operations without the
addition of water to the surface. When field conditions
,.. are such that additional moisture is needed for the final
jconcrete surface finishing operation, the required water
shall be applied to the surface by fog spray only and
shall be held to a minimum.
After finishing is complete and the concrete still
workable, the surface shall be tested for trueness with an
approved 10 -foot steel straightedge. The straightedge
shall be operated from the side of the pavement, placed
parallel to the pavement centerline and passed across the
slab to reveal any high spots or depression. The
straightedge shall be advanced along the pavement in
successive stages of not more than one-half its length.
Practically perfect contact of the straightedge with the
surface will be required, and the pavement shall be
leveled to this condition, in order to insure conformity
with the surface test required below, after the pavement
has fully hardened. Any correction of the surface required
shall be accomplished by adding concrete if required and
by operating the longitudinal float over the area. The
surface test with the straightedge shall then be repeated.
D-15
For one -lane pavement placement and uniform widening, the
equipment for machine -finishing of concrete pavement shall
be as directed by the Engineer but shall not exceed the
requirements of these specifications.
After completion of the straightedge operation, as soon as
construction operations permit, texture shall be applied
with 1/8 -inch wide metal tines with clear spacing between
the tines being not less than 1/4 inch nor more than 1/2
inch. If approved by the Engineer, other equipment and
methods may be used, provided that a surface texture
meeting the specified requirements is obtained. The
texture shall be applied transversely. It is the intent
that the average texture depth resulting from the number
of tests directed by the Engineer be not less than 0.060
inch with a minimum texture depth of 0.050 inch for any
one test when tested in accordance with Test Method Tex -
436 -A. Should the texture depth fall below that intended,
the finishing procedures shall be revised to produce the
desired texture.
12. Proportioning of Concrete
Concrete shall be composed of Portland cement, fine
aggregate, coarse aggregate, mineral filler and/or
admixture if used and water, mixed in proportions as
approved by the Engineer in the mix design as submitted by
a commercial laboratory and in the manner set forth in
this specification. On the basis of job and laboratory
investigations of the proposed materials, the Engineer
will fix the proportions by weight of water, coarse
aggregate, fine aggregate, cement, admixture and mineral
filler where required, in order to produce concrete of the
specified strength and workability.
13. Concrete Strength
The concrete mix will be designed with the intention of
producing a minimum average flexural strength (Modulus of
rupture) of 600 pounds per square inch and compressive
strength of 3000 psi at 7 days and/or a 28 day compressive
strength of 3,600 pounds per square inch. The coarse
aggregate factor (dry, loose volume of coarse aggregate
per unit volume of concrete) shall not exceed 0.85. Unless
otherwise shown on plans the concrete shall contain not
less than six sacks of cement per cubic yard of concrete.
The water -cement ratio (net gallons of water per sack of
94 pound cement) shall not exceed 6.0 gallon/sack.
Concrete specimens shall be prepared, cured and tested as
outlined in THD Bulletin C-11.
D-16
In the event that the measures taken do not eliminate the
bleeding immediately, concrete placement operations will
be suspended, as directed by the Engineer, and will remain
suspended, until such time as additional trial mixes
demonstrate that a non-bleeding batch design has been
achieved. Failing to achieve a satisfactory laboratory
batch design the Contractor will be required to use
different materials and to submit samples thereof for
additional trial mixes and pilot beams as specified -in THD
Bulletin C-11.
The mix will be designed with the intention of producing
*`
concrete which will have a slump of 1-1/2 inches when
l
14. Workability of Concrete
Concrete shall be uniformly plastic, cohesive and
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workable. Workable concrete is defined as concrete which
can be placed without honeycomb and without voids in the
surface of the pavement. Workability shall be obtained
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without producing a condition such that free water appears
on the surface of the slab when being finished as
specified. Where water appears on the surface of the
.-.
concrete after finishing and this condition cannot be
i,
corrected by reasonable adjustment in the batch design,
�.
the bleeding will be immediately corrected by one of the
following measures or a combination of two or more of the
7
following listed measures:
a. Redesign of the batch
ratio required to produce concrete of the specified
b. Addition of mineral filler to fine aggregate
,.,
C. Increase of cement content
In the event that the measures taken do not eliminate the
bleeding immediately, concrete placement operations will
be suspended, as directed by the Engineer, and will remain
suspended, until such time as additional trial mixes
demonstrate that a non-bleeding batch design has been
achieved. Failing to achieve a satisfactory laboratory
batch design the Contractor will be required to use
different materials and to submit samples thereof for
additional trial mixes and pilot beams as specified -in THD
Bulletin C-11.
D-17
The mix will be designed with the intention of producing
*`
concrete which will have a slump of 1-1/2 inches when
tested in accordance with THD Bulletin C-11. The slump
shall not be less than 1 inch nor more than 3 inches.
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15. Mix Design
Prior to the beginning of the concrete placement, and
thereafter before any change in source or characteristics
of any of the ingredients except mineral filler,
sufficient compression tests using various quantities of
cement and aggregates proposed for use shall be supplied
i,
the Engineer for consideration.
�.
Mixes will be designed and made in sufficient number to
represent a wide range of water -cement ratios. These mixes
shall comply with the requirements herein prescribed for
workability. From these preliminary tests the water -cement
ratio required to produce concrete of the specified
D-17
strength will be selected by the Engineer. The Contractor
may at any time present in writing a suggested mix design
and the Engineer will make the tests necessary to
determine its acceptability under these specification
requirements.
For mixing the concrete to be used in making the
preliminary test specimens, the Contractor shall furnish
and operate the mixer approved for use on this project. A
minimum one cubic yard batch shall be mixed or a batch of
sufficient size to afford proper mixing, whichever is the
greater. In lieu of the above mixer and procedure, the
Contractor may furnish a portable mixer of sufficient
rated capacity to mix a minimum three -sack batch; in which
case, the batch mixed for the preliminary test shall not
be less than the rated capacity of the mixer furnished.
No additional compensation will be allowed for equipment,
materials or labor involved in making preliminary test
specimens.
After the mix proportions and water -cement ratio required
to produce concrete of the specified strength have been
determined, placing of the concrete may be started.
Type I cement shall have a specified surface area within a
range of 1,600 to 1,900 square centimeters per gram. A
change in the specific surface of the cement of more than
100 square centimeters per gram may require a new mix
design.
16. Subgrade and Forms
Preparation of subgrade.
Rolling and sprinkling shall be performed when and to the
extent directed, and the roadbed shall be completed to or
above the plane of the typical sections shown on the plans
and the lines and grades established by the Engineer.
Drainage of the roadbed shall be maintained at all times.
Sealed or treated subgrade cut in the preparation of the
subgrade or setting of pavement forms shall be resealed or
the subgrade restored to the original conditions as
directed by the Engineer. See Section V-2.
The subgrade shall be maintained in a smooth, compacted
condition in conformity with the required section and
established grade until the pavement is placed and shall
be kept thoroughly wetted down sufficiently in advance -of
placing any pavement to insure its being in a firm and
D-18
t"`
t moist condition for at least 2 inches below the prepared
surface. Sufficient subgrade shall always be prepared in
',.. advance to insure satisfactory prosecution of the work. No
equipment or hauling shall be permitted on the prepared
subgrade, except by special permission of the Engineer,
elk which will be granted only in exceptional cases and only
where suitable protection in the form of two-ply timber
mats or other approved material is provided.
r 17. Placing and Removing Forms
The subgrade under the forms shall be firm and cut true to
grade so that each form section when placed will be firmly
in contact for its whole length and base width, and
exactly at the established grade. Forms shall be staked
with at least three pins for each 10 -foot section. A pin
shall be placed at each side of every joint. Form sections
shall be tightly joined and keyed to prevent relative
displacement. Forms shall be cleaned and oiled each time
they are used.
Forms shall be set for a sufficient distance in advance of
the point where concrete is being placed to permit a
finished and approved subgrade length of not less than 300
feet ahead of the mixing. Conformity of the grade and
alignment of forms shall be checked immediately prior to
placing concrete, and all necessary corrections made by
the Contractor. Where any forms have been disturbed or any
subgrade becomes unstable, the forms shall be reset and
rechecked. In exceptional cases, the Engineer may require
stakes driven to the grade of the bottom of the forms.
Sufficient stability of the forms to support the equipment
operated thereon and to withstand its vibration without
springing or settlement shall be required. If forms settle
and/or deflect over 1/8 inch under finishing operations,
paving operations shall be stopped and the forms shall be
reset to line and grade.
Forms shall remain in place for not less than 12 hours
after the concrete has been placed. They shall be
carefully removed in such a manner that little or no
damage will be done to the edge of the pavement. Any
damage resulting from this operation shall be immediately
repaired. After the forms have been removed, the ends of
all joints shall be cleaned, and any honeycombed areas
pointed up with approved mortar. Immediately after
pointing is completed, the form trench, if used, shall be
filled with earth from the shoulders in such a manner as
to shed water from rainfall or curing away from the edge
of the pavement. On completion of the required curing, the
D-19
subgrade or shoulders adjacent to the pavement shall be
graded in a condition to maintain drainage.
Allowable grade revisions shall in no way affect the
governing finishing and surface requirements of the
completed pavement.
All grade revisions shall be established by the Engineer.
No additional payment over the contract unit price will be
made for any pavement of a thickness exceeding that
required on the plans as a result of adjustment of the
forms.
I. Concrete Mixing and Placing
1. Mixina
The aggregates, mineral filler if required, cement and
water shall be measured separately, introduced into the
mixer, and mixed for a period of not less than 50 seconds
nor more than 90 seconds, measured from the time the last
aggregate enters the drum to the time discharge of the
concrete begins. The required water shall be introduced
into the mixing drum during the first 15 seconds of
mixing. The entire contents of the drum shall be
discharged before any materials of the succeeding batch
are introduced.
The Engineer may increase the minimum mixing time to that
necessary to produce thoroughly mixed concrete based on
inspection or appropriate uniformity tests. The mixing
time may be varied at any time necessary to produce
acceptable concrete.
If Ready -Mix concrete is used, the concrete shall be
discharged into the specified hauling equipment and
delivered to the road site. If truck agitators are used,
the concrete shall be continuously agitated at not less
than one nor more than six RPM as directed by the
Engineer.
The initial batch of concrete mixed after each time the
mixer is washed out shall be enriched by additional
mortar. The additional mortar shall be one sack of cement
and three parts of sand.
2. Placina
Any concrete not placed as herein prescribed within 30
minutes after mixing shall be rejected and disposed of as
directed except as•provided otherwise herein. Except by
D-20
a specific written authorization of the Engineer, concrete
shall not be placed when the temperature is below 400F,
,,.. the temperature being taken in the shade and away from
artificial heat.
When such permission is granted, the Contractor shall
furnish an approved enclosure, such as canvas -covered
framework, to enclose and protect all pavement.so placed,
and shall maintain the temperature of the air surrounding
the concrete at not less than 50OF for not less than 5
days. When concrete is being placed in cold weather, other
than under the conditions stated above, the Contractor
shall have available a sufficient supply of an approved
covering material to immediately protect concrete if the
air temperature falls to 320F, or below, before concrete
has been placed 4 hours. Such protection shall remain in
place during the period the temperature continues below
320F or for a period of not more than 5 days. Neither salt
nor other chemical admixtures shall be added to the
concrete to prevent freezing. The Contractor shall be
responsible for the quality and strength of concrete under
cold weather conditions and any concrete damage by
freezing shall be removed and replaced at his expense.
Concrete shall not be placed before sunrise and shall not
be placed later than will permit the finishing of the
pavement during sufficient natural light.
Concrete shall be placed only on approved subgrade or sub-
base, and unless otherwise indicated on plans, the full
width of the pavement shall be constructed monolithically.
The concrete shall be deposited on the subgrade or sub-
base in such manner as to require as little rehandling as
possible. Where hand spreading is necessary, concrete
shall be distributed to the required depth by use of
shovels. The use of rakes will not be permitted. Workmen
will not be permitted to walk in the concrete with any
earth or foreign material on their boots or shoes. The
placing of concrete shall be rapid and continuous.
Concrete shall be distributed to such depth that when
consolidated and finished, the slab thickness required by
plans will be obtained at all points and the surface shall
not, at any point, be below the established grade. Special
care shall be exercised in placing and spreading concrete
against forms and at all joints to prevent the forming of
honeycombs and voids.
If in the opinion of the Engineer, the temperature, wind
and/or humidity conditions are such that the quality of
the concrete will not be adversely affected, the specified
placing time may be extended to a maximum of 45 minutes.
D-21
3. Reinforcing Steel
All reinforcing steel, including steel wire fabric
reinforcement, tie bars, and dowel bars shall be
accurately placed and secured in position in accordance
with details shown on plans. Reinforcing bars shall be
securely wired together at alternate intersections,
following a pattern approved by the Engineer, and at all
splices, and shall be securely wired to each dowel
intersected. When wire fabric is used, it shall be
securely wired together at all splices and to each dowel
intersected. Tie bars shall be installed in the required
position by the method and device shown on plans or by
approved method and device equivalent thereto.
Tightly adhered scale or rust which resists removal by
vigorous wire brushing need not be removed except that
excessive loss of section to the reinforcement due to rust
shall be cause for rejection. Excessive loss of section
shall be defined as loss of section to the extent that the
reinforcement will no longer meet the physical
requirements for the size and grade of steel specified.
Where plans require an assembly of parts at pavement
joints, the assembly shall be completed,. placed at
required location and elevation, and all parts rigidly
secured in required position by the method and devices
shown on plans. Dowel bars shall be accurately installed
in joint assemblies in accordance with plans, each
parallel to the pavement surface and to the center line of
the pavement, and shall be rigidly secured in required
position by such means (as shown on plans) that will
prevent their displacement during placing and finishing of
the concrete.
4. Joints
When the placing*of concrete is stopped, a bulkhead of
sufficient cross sectional area to prevent deflection,
accurately notched to receive the load transmission
devices or dowels if required, and shaped accurately to
the cross section of the pavement shall be provided and
installed as a back-up for the joint filler and rigidly
secured in required position to permit accurate finishing
of the concrete up to the joint. After concrete has been
finished to the joint, formation of the joint seal space
and finishing of the joint shall be executed. The back-up
bulkhead shall remain in place until immediately prior to
the time when concrete placing is resumed, when it shall
be carefully removed in such manner that no element of"the
D-22
P
joint assembly will be disturbed. The exposed portion of
the joint assembly shall be free of adherent concrete,
r•. dirt or other material at the time placing of concrete is
resumed.
If necessary for proper installation of joint sealer,
excessive spalling of the joint groove shall be repaired
to the satisfaction of the Engineer in the manner which he
prescribes.
j Careful workmanship shall be exercised in the construction
of all joints to insure that the concrete sections are
,., completely separated by an open joint or by the joint
materials and to insure that the joints will be true to
the outline indicated.
!" 5. Weakened Plane Joints
D-23
Weakened plane joints shall consist of transverse
r
contraction joints and longitudinal joints and shall be
sawed as specified on the plans or as directed by the
Engineer. When the joints are sawed, the saw shall be
power driven, shall be manufactured especially for the
r„
purpose of sawing concrete, and shall be capable of
performing the work. Saw blades shall be designed to make
a clean smooth cut having a width and depth of cut as
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detailed on the plans. Tracks adequately anchored, chalk,
r
string line or other approved methods shall be used to
provide true alignment of the joints. The concrete saw
shall be maintained in good operating condition and the
Contractor shall keep a stand-by power saw on the project
at all times when concrete operations are under way.
f
If membrane curing is used, the portion of the seal which
has been disturbed by sawing operations shall be restored
by the Contractor by spraying the area with additional
r
f
curing seal.
6. Contraction Joints
Transverse contraction joints shall be formed or sawed
joints perpendicular to the centerline and surface of the
pavement. Where sawed joints are used, contraction joints
at approximately 10 to 15 -foot intervals shall be sawed as
soon as sawing can be accomplished without damage to the
pavement and before 12 hours after the concrete has been
placed, the exact time to be approved by the Engineer. The
remaining contraction joints shall be sawed in a uniform
D-23
pattern as directed by the Engineer, and they shall be
completed before uncontrolled cracking of the pavement
takes place. All joints shall be completed before
permitting traffic to use the pavement.
7. Longitudinal Joints
Longitudinal joints shall be sawed within two days after
construction of the pavement. Sawing shall not cause
damage to the pavement and the grooves shall be cut with a
minimum of spalling. No traffic (including construction
traffic) shall be permitted on the pavement until the
longitudinal joint is cut.
8. Joint Sealers
After the joints in the hardened concrete have been
repaired (if necessary) and cleaned to the satisfaction of
the Engineer, the joints will be filled with the W.R.
Meadows SOF-SEAL. After the sealant is installed it will
effectively seal the joints against water, dirt and stones
throughout repeated cycles of expansion and contraction.
9. Asphalt Board
Premolded materials, wherever used, shall be anchored to
the concrete on one side of the joint by means of copper
wire or nails not lighter than No. 12 B&S gage. Such
anchorage shall be sufficient to overcome the tendency of
the material to fall out of the joint.
10. Spreading and Finishing
All concrete pavement shall be consolidated by a
mechanical vibrator. As soon as the concrete has been
spread between the forms, the approved mechanical vibrator
shall be operated to consolidate the concrete and remove
all voids. Hand manipulated vibrators shall be used for
areas not covered by the mechanical vibratory unit.
After finishing is completed and the concrete still
workable, the surface shall be tested for trueness with an
approved 10 -foot steel straightedge. The straightedge
shall be operated from the side of the pavement, placed
parallel to the pavement centering and passed across the
slab to reveal any high spots or depressions. The
straightedge shall be advanced along the pavement in
successive stages of not more than one-half its length.
Practically perfect contact of the straightedge with the
surface will be required, and the pavement shall be
leveled to this condition, in order to insure conformity
D-24
with the surface test required after the pavement has
fully hardened. Any correction of the surface required
shall be accomplished by adding concrete if required and
_ by operating the longitudinal float over the area. The
surface test with the straightedge shall then be repeated.
Extra water will not be added for finishing.
After completion of the straightedge operation, the first
pass of the burlap drag shall be made as soon as
construction operations permit and before the water sheen
has disappeared from the surface. This shall be followed
by as many passes as required to produce the desired
texture depth. There shall be no unnecessary delays
between passes. The drag shall be wet during use and
maintained clean and free from encrusted mortar. It is the
intent that the average texture depth resulting from the
number of tests directed by the Engineer be not less than
0.025 inches with a minimum texture depth of 0.020 inches
for any one test. Should the texture depth fall below that
intended, the finishing procedures shall be revised to
produce the desired texture.
The Contractor shall have available at all times hand
brooms with stiff bristles for the purpose of providing
textures when the pavement surface is in such a condition
that the burlap drag or other methods being employed will
not provide the desired texture.
After completion of dragging and about the time the
t.., concrete becomes hard; the edge of the slab and joints
shall be carefully finished as directed by the Engineer,
and the pavement shall be left smooth and true to line.
Protection of Pavement and Opening to Traffic
The Contractor shall erect and maintain the barricades
required by plans and such other standard and approved
devices as will exclude public traffic and traffic of his
employees and agents from the newly placed pavement for
the periods of time and at locations hereinafter
prescribed by the Engineer. Portions of the roadway, or
crossings of the roadbed required to be maintained open
for use by traffic, shall not be obstructed by the above
required barricades.
The pavement shall be closed to all traffic, including
vehicles of the Contractor, until the concrete is at least
7 days old. This period of closure to all traffic may be
extended if, in the opinion of the Engineer, weather or
other conditions make it advisable to provide an extension
of the time of protection.
D-25
At the end of the 7 day period and as long thereafter as
ordered by the Engineer, and if so desired by the
Contractor, the pavement may be opened for use by vehicles
of the Contractor provided the gross weight (vehicle plus
load) of such vehicles does not exceed 14,000 pounds. Such
opening, however shall in no manner relieve the Contractor
from his responsibilities for the work. On those sections
of the pavement thus opened to traffic, all joints shall
first be sealed, the pavement cleaned and earth placed
against the pavement edges before permitting vehicles
thereon..
After the concrete in any section is 14 days old, or as
long thereafter as ordered by the Engineer, such section
of pavement may be opened to all traffic as required by
plans or when so directed by the Engineer. On those
sections of the pavement thus opened to traffic, all
joints shall first be sealed, the pavement cleaned, earth
placed against the pavement edges and all other work
performed as required for the safety of traffic.
When High Early Strength Concrete, resulting from the use
of Type III cement as required by plans or special
provisions, is used, the pavement may be opened to all
traffic after the concrete is 7 days old, or as long
thereafter as ordered by the Engineer, subject to the same
provisions governing the opening after 14 days as above
prescribed.
Where the Contractor desires to move any equipment not
licensed for operating on public streets, on or across any
pavement opened to traffic, he shall protect the pavement
from all damage by means of two-ply timber mats of 2 inch
stock or runways of heavier material laid on a layer of
earth, all as approved by the Engineer.
The Engineer may require the opening of pavement to
traffic prior to -the minimum time specified above under
conditions of emergency which in his opinion require such
action in the interest of the public. In no case shall the
Engineer order opening of the pavement to traffic within
less than 72 hours after the last concrete in the section
is placed. The Contractor shall remove all obstructing
materials, place earth against the pavement edges and
perform other work involved in providing for the safety of.
traffic as required by the Engineer in ordering emergency
opening. Orders for emergency opening of the pavement to
traffic will be issued by the Engineer in writing.
D-2 6
2. EARTH WORK
A. Subgrade Preparation for curb and gutter, streets paving
(asphalt and concrete) alley returns alley paving, valley
gutters, and earth work.
Description
Sub -grade preparation shall include the removal, haul and
disposal of all obstructions, including existing curbs,
gutters, paving materials, base materials, concrete slabs
and other obstructions shown on the plans or as designated
by the Engineer and all scarifying, pulverizing, wetting,
disking, blading and rolling with compactors to a depth of
at least 6" on residential streets and to a depth of 12"
on major thoroughfares and collector streets. Compactors
will be used from the bottom to the finished sub -grade
elevation to compact the subgrade to 95% Standard Proctor
Density (A.S.T.M. D-698) in conformity to the line, grade
and sections as shown on the plans or as established by
the Engineer.
After the obstructions have been removed, or in
conjunction with such removal, the street bed and/or alley
return foundation and/or sidewalk foundation shall be
excavated and shaped in conformity with the typical
section and to the line and grades as shown on the plans
or as established by the Engineer.
All unstable or otherwise objectionable material shall be
removed from the subgrade and replaced with approved
material. The excavation shall be done in such a manner as
to require a minimum of fill to bring the subgrade to the
correct elevation. When the subgrade is too low as
initially excavated, the Contractor shall place additional
soil or caliche in layers not exceeding four (411) inches
and compact each layer by moistening and rolling.
1. Scraper Work
The utilization of a scraper for excavation and shaping of
subgrade and base is permitted with exceptions which are
determined by depths of utility lines. Unless otherwise
specified by the Engineer, the scraper shall not exceed 23
cubic yards capacity as rated loaded flush by the
manufacturer.
2. Compaction
Subgrade shall be compacted to 95% Standard Proctor
Density (A.S.T.M. D-698) for all improvements except
D-27
thoroughfare and collector street paving. Subgrade shall
be compacted to 100% Standard Proctor Density for
thoroughfare and collector street paving.
Density tests (A.S.T.M. D-2922) will be performed and test
rolling will be observed by City inspectors.
Swelling subgrade (soils with plasticity index of 20 or
more) shall be sprinkled as required to provide not less
than optimum moisture during compaction. Other subgrade
soils will be compacted at a moisture content of plus or
minus 2% of 2% below optimum moisture or other moisture
content directed by the Engineer.
Test rolling will be accomplished with a 25 ton pneumatic
tire roller or other pneumatic tire roller approved by the
Engineer. The Engineer may require up to six passes of
the roller in determining the condition of the subgrade.
Any soft or unstable areas found by test rolling will be
corrected by removing the soft or unstable material and
replacing it with suitable compacted to specified density.
The areas so corrected shall be test rolled as specified
above.
3. Intersection
Special care shall be exercised in grading street
intersections where dips are located so that the cross
profiles present a smooth riding surface and so that the
compacted base thickness will not be less than six (611) or
nine (911). Crown section shall begin to decrease 60 feet
back of end of radius for residential streets. Wider
street dips will be blue topped as shown on the detail
sheet.
4. Prosecution of the Work
The Contractor may proceed with subgrade preparation on
any schedule he may select except that, unless hindered by
factors beyond his control, not more than seven (7)
calendar days shall elapse between the time subgrade
preparation is begun and the spreading and compacting of
the base has started. Measures shall be taken by the
contractor not to leave driveways impassable during the
night hours.
5. Excess Materials
Materials excavated in excess of that needed in fill and
backfill behind curb shall be wasted by the Contractor.
D-28
fi
Care shall be taken by the Contractor to use only topsoil
in the backfill behind the curbs. The Contractor may
dispose of the surplus excavated material in any manner
not objectionable to the public, and it is his
responsibility to locate a suitable site for dumping the
waste excavation. In any event, the Contractor shall not
dispose of the surplus materials in any of the lake areas
either outside or within the city limits. Location of
disposal sites near any lake area must be approved by the
Engineer.
6. Subgrade for Alley Paving
The preparation of the subgrade for concrete alley paving
shall be done in the same manner as other subgrade
excavation which requires scarifying, wetting, disking,
blading, rolling, and compacting. The Contractor will be
required to excavate around existing improvements such as
gas meter, water meters, poles, etc. Each of these
obstructions shall be the responsibility of the
Contractor. Trees that conflict with the improvements
shall be removed by the Contractor upon approval of the
Engineer.
The Contractor shall shape to subgrade to the cross-
section shown on the plans and to the lines and grades
established by the Engineer. After the forms are set and
before the reinforcing is placed, the Contractor shall
finally.shape the subgrade so that there will be a minimum
thickness of concrete of five (511) inches at the
centerline and seven and one-half inches (7-1/211) at the
outside edges. All areas where fill material is required
shall be compacted. The subgrade shall be wetted and
rolled to secure 90% Proctor Density in the upper six (611)
making a firm foundation for the alley paving.
�- The Contractor will be required to shape the portion of
j the alley outside of the limits of the concrete slab so
that all drainage in the alley will be to the invert of
the concrete slab. Excess excavated materials shall be
hauled to any approved location.
B. Embankment
Description
Prior to placing any embankment, all "Preparing Right -of -
Way" and/or "Clearing and Grubbing" operations shall have
been completed on the excavation sources and areas over
which the embankment is to be placed. Stump holes or other
small excavations in the limits of the embankment shall be
D-29
backfilled with suitable material and thoroughly tamped by
approved methods before commencing embankment
construction. The surface of the ground, including plowed
loosened ground, or surface roughened by small washes or
otherwise, shall be restored to approximately its original
slope by blading or other methods and where indicated on
plans or required by the Engineer, the ground surface thus
prepared shall be compacted by sprinkling and rolling.
Where embankments are to be placed adjacent to or over
existing roadbeds, the roadbeds slopes shall be plowed or
scarified to a depth of not less than six (611) inches and
the embankment built up in successive layers, as
hereinafter specified, to the level of the old roadbed
before its height is increased. Then, if directed, the top
of the roadbed shall be scarified and recompacted with the
next layer of the new embankment. The total depth of the
scarified and added material shall not exceed the
permissible depth of layer.
Trees, stumps, roots, vegetation, or other unsuitable
materials shall not be placed in embankment.
Except as otherwise required by the plans, all embankment
shall be constructed in layers approximately parallel to
the finished grade of the roadbed and unless otherwise
specified each layer shall be so constructed as to provide
a uniform slope of 1/4" inch per foot from the center line
of the roadbed to the outside.
Embankments shall be constructed to the grade established
by the Engineer and completed embankments shall correspond
to the general shape of the typical sections shown on the
plans and each section of the embankment shall correspond
to the detailed section or slopes established by the
Engineer. After completion of the roadway, it shall be
continuously maintained to its finished section and grade
until the project is accepted.
Except as otherwise specified, earth embankments shall be
constructed in successive layers for the full width of the
individual roadway cross section and in such lengths as
are best suited to the sprinkling and compaction methods
utilized.
Layers of embankment may be formed by utilizing equipment
which will spread the material as it is dumped, or they
may be formed by being spread by blading or other
acceptable methods from piles or windrows dumped from
excavating or hauling equipment in such amounts that
material is evenly,distributed.
D-30
Minor quantities of rock encountered in constructing earth
embankment shall be incorporated in the specified
t► embankment layers, or may be placed in accordance with the
requirements for the construction of rock embankments in
the deeper fills within the limits of haul shown on the.
r„plans, provided such placement of rock is not immediately
adjacent to structures. Also, rock may be placed in the
portions of embankments outside the limits of the
completed roadbed width where the size of the rock
prohibits their incorporation in the normal embankment
layers.
Each layer of embankment shall be uniform as to material,
density and moisture content before beginning compaction.
Where layers of unlike materials abut each other, each
layer shall be featheredged for at least 100 feet or the
material shall be so mixed as to prevent abrupt changes in
the soil. No material placed in the embankment by dumping
in a pile or windrow shall be incorporated in a layer in
that position, but all such piles or windrows shall be
moved by blading or similar methods. Clods or lumps of
material shall be broken and the embankment material mixed
by blading, disking, or similar methods to the end that a
uniform material or uniform density is secured in each
layer. Water required for sprinkling to bring the material
to the moisture content necessary for maximum compaction
shall be evenly applied and it shall be the responsibility
of the Contractor to secure a uniform moisture content
throughout the layer by such methods as may be necessary.
In order to facilitate uniform wetting of the embankment
material, the Contractor shall water at the material
source if the sequence and methods used are such as not to
cause an undue waste of water. Such procedure shall be
subject to the approval of the Engineer.
1. Compaction
The compaction method shall require that each layer shall
be compacted to the required density by any method, type,
and size of equipment which will give the required
compaction. The depth of layers, prior to compaction,
shall depend upon the type of sprinkling and compaction
equipment used. Prior to and in conjunction with the
rolling operation, each layer shall be brought to the
moisture content necessary to obtain the required density
and shall be kept leveled with suitable equipment to
insure uniform compaction over the entire layer.
For each layer of earth embankment and select material, it
is the intent of this specification to provide the density
as required herein; unless otherwise shown on the plans.
D-31
The required compaction shall be 95% Standard Proctor
Density A.S.T.M. D-698.
After each section of earth embankment or select material
is complete, tests as necessary will be made by the
Engineer. If the material fails to meet the density
specified, the course shall be reworked as necessary to
obtain the specified compaction, and the compaction method
may be altered on subsequent work to obtain specified
density. Such procedure shall be determined by, and
subject to, the approval of the Engineer.
At any time, the Engineer may order proof rolling to test
the uniformity of compaction of the embankment subgrade.
All irregularities, depressions, weak or soft areas which
develop shall be corrected immediately by the Contractor.
Should the subgrade, due to any reason or cause, lose
required stability, density, or finish before the pavement
structure is placed, it shall be recompacted and
refinished at the sole expense of the Contractor.
Excessive loss of moisture in the subgrade shall be
prevented by sprinkling, sealing, or covering with a
subsequent layer of granular material. Excessive loss of
moisture shall be construed to exist when the subgrade
soil moisture content is more than 4 percent below the
optimum for compaction to Standard Proctor Density. (Also
see Section V, Item 2 (A] Compaction.)
At Culverts
Embankments adjacent to culverts which cannot be compacted
by use of the blading and rolling equipment used in
compacting the adjoining sections of embankment shall be
compacted in the manner prescribed below.
The following requirements shall apply to the backfilling
of pipe culverts in addition to the pertinent portions of
the general requirements given in the preceding section.
After the bedding has been prepared and the pipe installed
as required by the pertinent specifications, selected
materials from excavation or borrow shall be placed along
both sides of the pipe equally, in uniform layers not to
exceed six (611) inches in depth (loose measurement),
wetted and thoroughly compacted so that on each side of
the pipe there shall be a berm of thoroughly compacted
materials at least as wide as the external diameter of the
pipe, except insofar as undisturbed material obtrudes into
this area. The method and degree of compaction shall be
same as specified above.
D-32
Filling and/or backfilling shall be continued in this
manner to the elevation of the top of the pipe. Special
care shall be taken to secure thorough compaction of the
material placed under the haunches of the pipe. All fill
or backfill below the top of the pipe shall be compacted
mechanically in the same manner and to the density
prescribed above, regardless of whether or not such
material is placed within the limits of the embankment or
roadbed.In the case of embankments, the remainder of the
fill above the top of pipe shall be placed in accordance
with the provisions for placing roadway embankment as
prescribed in the pertinent specification included in the
contract. No construction traffic will be permitted to
cross any pipe culvert until the minimum depth of fill
above the pipe as determined by the Engineer has been
placed and consolidated.
3. BASE COURSE
The base course shall consist of a minimum of six (611) or
nine (911) inches of compacted approved caliche, black base
or combination of caliche and black base material shaped
in accordance with the typical cross-sections provided in
the plans and to the grades established by the Engineer.
t
A. Hauling and Placing
Approved base material shall be hauled in vehicles of
uniform capacity to the site and dumped evenly so that an
adequate quantity of material will be placed to provide a
minimum of six (611) inches of compacted base material on
all units except major thoroughfares streets. On these
streets the Contractor will construct nine (911) inches of
compacted base material.
B. Processing
Processing of caliche base shall be accomplished in
multiple lifts of three (311) inches in compacted depth.
Each lift or layer shall be thoroughly moistened and
rolled as it is cut from the windrow. After all of the
material is cut from the windrow to the sides, it shall be
cut back to the center in lifts of three (311) inches and
thoroughly moistened and rolled again. Succeeding layers
shall then be placed similarly until the caliche base
course is completed.
Caliche base shall be compacted to 95% Standard Proctor
Density (A.S.T.M. D-698) for all improvements except
thoroughfare street paving shall be compacted to 100%
Standard Proctor Density.
D-33
Density tests (A.S.T.M. D-2922) will be performed and test
rolling for base will be observed by City inspectors.
Caliche base shall be compacted at a moisture content of
plus or minus 2% of 2% below optimum moisture or other
moisture content directed by the Engineer.
The finished caliche base shall be test rolled with a 25
ton pneumatic tire or other approved roller. The Engineer
may require up to six passes of the roller in determining
the condition of the base.
All nine (911) inch compacted caliche base shall be
accomplished in three (311) inch lifts. The caliche course
shall then be sprinkled as required and rolled with
compactors as directed until a uniform compaction of
specified "Standard Proctor Density" is secured.
Throughout this entire operation, the shape of the course
shall be maintained by blading; and the surface upon
completion shall be smooth and in conformity with the
typical sections shown on plans and to the established
lines and grade.
Traffic may be allowed to travel on the caliche base, as
directed by the Engineer, during construction. During
this period, the caliche base shall be satisfactorily
maintained by the use of water trucks, blades, drags and
such other equipment as may be required. The base course
shall be so maintained until the wearing surface is placed
thereon. The surface shall not be placed on base course
that exceeds optimum mixture by two percent (2%).
Processing of asphaltic base shall be as directed by the
Engineer and similar to that described under Hot Mix
Asphaltic Concrete Surface. Lift thickness will be
indicated by the Engineer or as shown on the paving plans:
Electronic screed controls will be required for placing
black base on grade. The density required will be
determined by the Engineer after material to be used has
been approved. All areas and "nests" of segregated coarse
or fine material shall be corrected or removed and
replaced with well graded material as directed by the
Engineer.
Each layer of black base may be test rolled, as directed
by the Engineer, with a 25 ton pneumatic tire or other
approved roller requiring up to six passes before
succeeding layers are placed. A delay in construction of
a black base mat or surface will require test rolling and
approval prior to construction of the next layer.
D-34
i
C. Finishing
Description
The compacted base shall be finished and shaped
immediately preceding the application of the surface
treatment. All loose or unconsolidated material shall be
removed and the surface moistened and rolled with a steel
wheel roller.
1. Failed Density or Weak Spots in Base
The finished caliche base shall be checked for density
requirements and by test rolling. Materials that fails
the density requirement shall be reworked as necessary
until passing. The full depth of caliche base shall be
compacted to the extent necessary to remain firm and
stable under test rolling. All irregularities,
depressions or weak spots which develop shall be corrected
immediately by scarifying the areas affected, adding
suitable material as required, reshaping and recompacting
by sprinkling and rolling. If the Contractor chooses, he
may repair the weak spot by removing the material involved
and replacing it with type "C" hot mix or asphalt
stabilized base. In this case, the surface may be applied
as soon as the hot mix patch has been compacted and cooled
to ambient temperature.
2. Allowable Deviation in Finish
Immediately prior to placing of surfacing the base shall
be checked and any deviation in excess of three -eights
(3/8) inch from the established grade or true cross
section shall be corrected as provided above for defects
Longitudinally a straightedge 10 feet long shall be used
to detect any deviation which shall be corrected as
defects.
4. HOT MIX ASPHALTIC CONCRETE SURFACE
b
A. Description
This item shall consist of 1-1/2" compacted T.H.D. Type
"C" hot mix asphaltic concrete surface, using approved
crushed stone aggregate, constructed over a compacted
base. The base shall be primed and a tack coat applied as
required.
1. General (Test Method Tex -207-F)
D-35
It is the intent of this specification that the material
be placed and compacted to a density of 95 to 100 percent
of that density developed in the laboratory test method of
molding stability specimens with a minimum compacted
thickness of one and one half inches (1-1/211). Sufficient
density tests will be made in order to determine that the
compaction procedure used by the Contractor is adequate
and proper to accomplish the intent as stated above.
If the mixture produced does not have the specified
qualities, it shall be adjusted until it does. The
pavement shall be constructed on the previously completed
and approved subgrade, base, existing pavement, bituminous
surface or in the case of a bridge, on the prepared floor
slab, as herein specified and in accordance with the
details shown on the plans.
2. Temperature Requirements
A. November 1 until April l
1. The asphaltic mixture shall not be placed when the air
temperature is below 55 degrees F and falling.
2. The asphaltic mixture may be placed when the air
temperature is above 50 degrees F and rising.
B. April 1 till November 1
1. The asphaltic mixture shall not be placed when the air
temperature is below 50 degrees F and falling.
2. The asphaltic mixture may be placed when the air
temperature is above 45 degrees F and rising.
The air temperature shall be taken in the shade away from
artificial heat or as reported by the National Weather
Service on their hourly report (Telephone No. 762-0141).
The Engineer may use his discretion to require a cover
over the asphaltic mixture when being hauled from the
plant to the job site.
If the temperature of a load of asphaltic concrete
measured while passing through the lay -down machine is 25
degrees F less than the mixing temperature, the load may
be rejected by the Engineer and payment will not be made
for the rejected material.
3. Preparation of Base and Areas Bordering
D-36
D-37
The compacted base upon which the hot mix asphaltic
concrete surface is to be placed shall be prepared and
cleaned, as required by the Engineer, before the prime
_ coat is applied.
4. Prime Coat
The prime coat shall consist of an application of .25
gallons per square yard of MC asphalt.
r-
f
5. Tack Coat
'^
Before the asphaltic mixture is laid, the surface upon
which the tack coat is to be placed shall be cleaned
thoroughly to the satisfaction of the engineer. The
surface shall be given a uniform application of tack coat
r^
using asphaltic materials of this specification. This tack
coat shall be applied, as directed by the engineer, with
approved sprayer. Where the mixture will adhere to the
surface on which it is to be placed without the use of a
i
tack coat, the tack coat may be eliminated by the
Engineer. All contact surfaces of curbs and structures and
all joints shall be painted with a thin uniform coat of
the asphaltic material meeting the requirements for tack
coat. The tack coat shall be rolled with a pneumatic tire
roller as directed by the Engineer.
6. Transporting Asphaltic Concrete
The asphaltic mixture, prepared as specified above shall
be hauled to the work site in tight vehicles previously
cleaned of all foreign material. The dispatching of the
vehicles shall be arranged so that all material delivered
r"
may be placed, and all rolling shall be completed during
day -light hours. The inside of the truck body may be
given a light coat of oil, lime slurry or other material
�..
satisfactory to the Engineer, if necessary, to prevent
mixture from adhering to the body. In cool weather or for
long hauls, canvas covers and insulating of truck bodies
may be required. Vehicles of the semi -trailer type are
F
prohibited.
7. Placing
Generally the asphaltic mixture shall be dumped and spread -
on the approved prepared surface with the specified
spreading and finishing machine in such manner that when
properly compacted the finished pavement will be smooth,
of uniform density and will meet the requirements of the
typical cross sections and the surface tests. During the
application of asphaltic material, care shall be taken to
D-37
prevent splattering of adjacent pavement, curb and gutter,
and structures.
The surface course shall be laid in a compacted layer with
a minimum compacted thickness of one and one-half inches
(1-1/2").
A level up course, 1/2" or more in thickness, shall
require the use of black base or a coarse grade of hot mix
approved by the Engineer. It shall be spread and
compacted to lines and grades as established by the
Engineer.
When the asphaltic mixture is placed in a narrow strip
along the edge of an existing pavement, or used to level
up small areas of an existing pavement or placed in small
irregular areas where the use of a finishing machine is
not practical, the finishing machine may be eliminated
when authorized by the Engineer, provided a satisfactory
surface can be obtained by other approved methods.
Adjacent to flush curbs, gutters, liners and structures,
the surface shall be finished uniformly high so that when
compacted it will be slightly above the edge of the curb
and flush structure.
All joints shall present the same texture density, and
smoothness as other sections of the course. The joints
between old and new pavements or between successive day's
work shall be carefully made to insure a continuous bond
between old and new sections of the course.
The transverse edges of old pavement and, if required by
the Engineer, the successive days pavement shall be sawed
with an approved concrete saw to expose an even vertical
surface for the full thickness of the course. All contact
surfaces of previously constructed pavement shall be
painted with a thin uniform coat of hot bituminous
material before the fresh mixture is placed.
8. compacting
As directed by the Engineer, the pavement shall be
compacted thoroughly and uniformly to the required
density. The specified rollers shall be used, except as
provided in paragraph (3) below.
Rolling with the three wheel and tandem rollers shall
start longitudinally at the sides and proceed toward the
center of the pavement, overlapping on successive trips by
at least half the width of the rear wheels unless
D-38
When indicated on the plans or permitted by the Engineer
�^ in writing, the pavement may be compacted to the required
density by the use of compacting equipment other than that
specified herein.
Hand tamping. The edges of the pavement along curbs,
headers and similar structures, and all places not
accessible to the roller, or in such positions as will not
allow thorough compaction with the roller, shall be
thoroughly compacted with lightly oiled tamps.
Rolling with the trench type roller will be required on
widening areas in trenches and other limited areas where
satisfactory compaction cannot be obtained with the three
t^
wheel and tandem rollers.
9. Surface Tests
The surface of the pavement, after compaction , shall be
smooth and true to the established line, grade and cross
section, and when tested with a 10 foot straight edge
placed parallel to the centerline of the roadway or tested
by other equivalent and acceptable means, except as
provided herein, the maximum deviation shall not exceed
1/8 inch in 10 feet, and any point in the surface not
meeting this requirement shall be corrected as directed by
D-39
i
otherwise directed by the Engineer. Alternate trips of
the roller shall be slightly different in length. On
r.,
super -elevated curves, rolling shall begin at the low side
and progress toward the high side unless otherwise
directed by the Engineer. Rolling with pneumatic roller
shall be done as directed by the Engineer. Rolling shall
be continued until required compaction is obtained and all
roller marks are eliminated. One tandem roller, two
pneumatic rollers and at least one three wheel roller, as
�►-
specified above, shall be provided for each job.
Additional rollers shall be provided if needed.The motion
of the roller shall be slow enough at all times to avoid
displacement of the mixture. If any displacement occurs,it
shall be corrected at once by the use of rakes and of
fresh mixture where required. The roller shall not be
allowed to stand on pavement which has not been fully
+'
compacted. To prevent adhesion of the surface to the
roller, the wheels shall be kept thoroughly moistened with
water, but an excess of water will not be permitted. All
..
rollers must be in good mechanical condition. Necessary
4
precautions shall be taken to prevent the droppings of
gasoline, oil, grease or other foreign matter on the
pavement, either when the rollers are in operation or when
standing.
When indicated on the plans or permitted by the Engineer
�^ in writing, the pavement may be compacted to the required
density by the use of compacting equipment other than that
specified herein.
Hand tamping. The edges of the pavement along curbs,
headers and similar structures, and all places not
accessible to the roller, or in such positions as will not
allow thorough compaction with the roller, shall be
thoroughly compacted with lightly oiled tamps.
Rolling with the trench type roller will be required on
widening areas in trenches and other limited areas where
satisfactory compaction cannot be obtained with the three
t^
wheel and tandem rollers.
9. Surface Tests
The surface of the pavement, after compaction , shall be
smooth and true to the established line, grade and cross
section, and when tested with a 10 foot straight edge
placed parallel to the centerline of the roadway or tested
by other equivalent and acceptable means, except as
provided herein, the maximum deviation shall not exceed
1/8 inch in 10 feet, and any point in the surface not
meeting this requirement shall be corrected as directed by
D-39
the Engineer. When placed on existing surfaces, the 1/8
inch deviation in 10 feet requirement may be waived by the
Engineer.
10. Surface Density Test
See Section IV, Item 10-D. Laboratory Control.
11. Equipment
Spreading and Finishing Machine. The spreading and
finishing machine shall be of a type approved by the
Engineer, shall be capable of producing a surface that
will meet the requirements of the typical cross section
and the surface test, when required, and shall have
adequate power to propel the delivery vehicle in a
satisfactory manner when the mixture is dumped into the
finishing machine. The finishing machine shall be equipped
with a flexible spring and/or hydraulic type hitch
sufficient in design and capacity to maintain contact
between the rear wheels of the hauling equipment and the
pusher rollers of the finishing machine while the mixture
is being unloaded. The finishing machine shall be operated
in a low gear, or as directed by the Engineer, at a speed
to produce a surface that will meet the requirements of
the typical cross section and surface test.
Any vehicle which the finishing machine cannot push or
propel in such a manner as to obtain the desired lines and
grade without resorting to hand finishing will not be
allowed to dump directly into the finishing machine.
Vehicles dumping into the finishing machine shall be
mechanically and/or automatically operated in such a
manner that overloading the finishing machine being used
cannot occur and the required lines and grade will be
obtained without resorting to hand finishing.
Dumping of the asphaltic mixture in a windrow and then
placing the mixture in the finishing machine with loading
equipment will be approved by the Engineer,provided that
the loading equipment is constructed and operated in such
a manner that substantially all of the mixture deposited
on the roadbed is picked up and placed in the finishing
machine without contamination by foreign material of the
mixture. The loading equipment will be so designed and
operated that the finishing machine being loaded will
obtain the required line, grade and surface without
resorting to hand finishing. Any operation of the loading
equipment resulting in the accumulation and subsequent
shedding of this accumulated material into the asphaltic
mixture will not be permitted.
D-40
Forms. The use of forms will not be required except where
necessary to support the edges of the pavement during
rolling. If the pavement will stand rolling without undue
_ movement, binder twine or small rope may be used to align
the edges.
" Motor Grader. The motor grader, if used, shall be self-
propelled power motor grader; it shall be equipped with
pneumatic tired wheels; shall have a blade length of not
�.. less than 12 feet; shall have a wheel base of not less
than 16 feet ; and shall be tight and in good operating
condition and approved by the Engineer.
Pneumatic Tire Rollers. The pneumatic tire roller shall be
an acceptable self-propelled roller mounted on pneumatic
tired wheels, with the weight capable of being varied
uniformly from 275 to 550 pounds per inch width of tire
tread, so constructed as to be capable of being operated
in both a forward and a reverse direction and shall have
suitable provision for moistening the surface of the tires
while operating. All tires of the same roller shall be
smooth tread of equal size and diameter and shall be
arranged in such a manner that the gap between the tires
of one axle will be covered by the tires of the other.
The tire pressure of each tire shall be adjusted as
directed by the Engineer and this pressure shall not vary
by more than 5 pounds per square inch.
Two Axle Tandem Roller. This roller shall be an acceptable
power driven tandem roller weighing not less than 8 tons.
Three Wheel Roller. This roller shall be an acceptable
power driven three wheel roller weighing not less than 10
tons.
Trench Roller. This roller shall be an acceptable power
driven trench roller equipped with sprinkler for keeping
the wheels wet and adjustable road wheel so that the
roller may be kept level during rolling. The drive shall
be not less than 20 inches wide.The roller under working
conditions shall produce 325 pounds per linear inch of
roller width and be so geared that a speed of 1.8 miles
per hour is obtained in low gear.
Straightedges and Templates. When directed by the
Engineer, the Contractor shall provide acceptable 10 foot
straightedges for surface testing. Satisfactory templates
shall be provided by the Contractor as required by the
Engineer.
D-41
All equipment shall be maintained in good repair and
operating condition and shall be approved by the Engineer.
The Contractor shall furnish such suitable machinery,
equipment, and construction forces as may be necessary, in
the opinion of the Engineer, for the proper prosecution of
the work, and failure to do so may cause the Engineer to
withhold all estimates which have or may become due or the
Engineer may suspend work until his requests are complied
with.
12. Opening to Traffic
The pavement shall be opened to traffic when directed by
the Engineer. All construction traffic allowed on the
pavement shall comply with City Ordinance governing
traffic on City Streets.
If the surface ravels,corrugates or shoves, it will be the
contractor's responsibility to correct this condition at
his expense.
5. CLEANUP
Within three days after completion of any Sub -Unit of paving
the Contractor shall clean, remove rubbish and temporary
structures from the street, restore in an acceptable manner
all property, both public and private, which has been damaged
during the prosecution of the work, and leave the site of the
work in a neat and presentable condition throughout. The cost
of the "cleanup" shall be included as a part of the cost of
the various items of work involved, and no direct compensation
will be made for this work. This work shall be done before
final acceptance of the Sub -Unit will be considered.
The cleanup shall include the sloping, filling and shaping of
the area between the curb and property line. This area shall
be filled with good top soil. When the ground behind the curb
is higher than the top of the curb, the Contractor will be
required to cut this area down to provide a smooth, even slope
between the property line and the curb.
6. PROTECTION OF EXISTING UTILITIES
A. Adlustment of Valves and Manholes
The City Forces will place valve boxes and manholes on
finished grade after the base has been finished to grade.
The Contractor shall allow the City Forces at least 3 days
to do this work after finishing the base and before
application of asphalt. It shall be the responsibility of
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the Contractor to notify the Water and Sewer Department 48
hours after curb and gutter has been completed so that the
�.. City Forces can properly schedule their work. In all
_ alleys the City Forces will set the valve boxes and
manholes to grade after the forms are in place. Any
variation in this procedure that causes expense to the
City shall have the approval of the Engineer, and such
expense shall be borne by the Contractor.
B. Installation. Adjustments and Protection of Utilities
and Traffic Installations
The plans show only approximate locations of utilities as
obtained from the various utility companies and shall not
relieve the Contractor from familiarizing himself with all
underground utilities. It is not implied that all existing
utilities are shown on the plans. The City of Lubbock does
not assume any responsibility for any utility lines which
are not shown on the plans.
The utility companies will attempt to move all utilities
that can be reasonably removed prior to beginning of
construction; however, this does not relieve the
Contractor from any damage that he might do to any utility
property. In case of any damage, the Contractor shall
immediately notify the utility company.
City Water and Sewer 762-6411,Ext.2595
Lubbock Power and Light 762-6411,Ext.2554
City Traffic Shop 762-6411, Ext.214012144
Energas Traffic Shop 741-4200
Southwestern Public Service 763-2881
Southwestern Bell Telephone 741-6101
Cox Cable of Lubbock 793-2222
City Traffic Engineering 762-6411,Ext.2132
Sequence: The sequence of utility adjustments has been
mutually agreed upon by the utility companies in the City
of Lubbock and will attempt to follow the following
schedule:
Plans for contract project will be delivered to all
utility companies two weeks prior to opening bids. As a
general rule, these projects will have been staked.
D-43
The utility companies will relocate all items necessary,
locate and flag all meters, valves, manholes, underground
cables, etc., prior to the date the Contractor is to begin
construction.
After the subgrade is completed on alley paving projects,
and after the base is completed on all street paving
projects, all manholes, valve boxes , etc., will be set to
finished grade by the utility companies. The site shall be
left in a clean condition.
On all projects, including private contracts, the
Contractor shall exercise care not to damage any sanitary
sewer pipe or manholes, storm sewer pipe or manholes, or
telephone cable or manholes, water or gas lines, valve
boxes , meter boxes, nor any other pipe or utility. If
necessary, the Contractor shall call the department or
company concerned and make arrangements for adjusting the
manhole, valve box, meter box,or other utility to grade.
On all projects for which he is awarded a contract, the
Contractor will be responsible during the construction
period for any damages to manholes, valve boxes, meter
boxes, and other utilities.
Should any item be damaged during the process of
construction, the Contractor is to notify the affected
utility company and the City inspector. The utility
company will immediately repair the damaged item. Any
bills for damage will be sent through the Department of
Engineering. The Department of Engineering will process
all bills and fix responsibility for damage and govern the
extent of repair.
Private contracts do not have plans, but utility companies
will be furnished cut sheets and notified of impending
construction by letter. Other items such as adjustments,
damages, etc. will be handled the same as for bid let
projects.
The utility companies will schedule their work with the
Contractor. When utility adjustments commence before the
contract is awarded, it will be the responsibility of the
utility company to barricade the project.
Unless otherwise agreed upon by the City and the utility
companies involved, the sequence of installation of
underground utilities shall be as follows:
Utility Sequence
Sewer First
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Electric (Primary) Second
Electric (Secondary) Third
Telephone Fourth (last if no power or
T . V . )
T.V. Cable Fifth
Water Sixth
Gas Seventh
Traffic Engineering Eighth
On all projects, including private contracts, the
Contractor shall not place curb and gutter or base
material at points where underground utilities cross or
propose to cross until such utilities have been adjusted
or installed.
7. SALVAGING AND REPLACING BASE
A. Description
"Salvaging and Replacing Base" shall consist of removing
the existing base material where shown on plans, such
temporary storage as is necessary, and the replacement of
this material on the prepared roadbed as herein specified
and in conformity with the typical sections shown on plans
and to the lines and grades as established by the engineer.
B. Construction Methods
1. Salvaging Existing Base
The existing base, including any bituminous mat not shown
on plans to be salvaged, shall first be cleaned of all dirt
or other objectionable material by blading, brooming or
other approved methods, then scarified to the width and
depth as may be required to provide the estimated amount of
salvaged material per station as shown on the plans.
Subgrade shall be reworked, if necessary, as directed by
the Engineer. Any bituminous mat encountered shall be
broken into particles not more than two inches in size, and
incorporated uniformly with the existing base. The material
thus salvaged shall be placed in stockpiles or windrows
until sufficient subgrade has been prepared to receive the
salvaged material; then, if the Contractor so elects, the
D-45
remaining old base material as salvaged may be placed
directly upon the prepared subgrade as directed by the
Engineer, thus eliminating the necessity of stockpiling. It
shall be the responsibility of the Contractor that all the
available material shall be salvaged and replaced and shall
be kept reasonably free of soil from the subgrade or
roadbed during the salvaging and replacing operations. When
material is windrowed or stockpiled, it shall be so placed
not to interfere with traffic, proper drainage or the
general progress of the work.
2. Preparation of Subgrade
Preparation of subgrade shall be in accordance with Section
V, Item 2 Earth Work of these specifications.
3. Replacement of Salvage Material
The salvage material shall be in accordance with Section V,
Item 2 Earth Work of these specifications.
8. SALVAGING AND STOCKPILING BASE MATERIAL
A. Description
This item shall consist of salvaging base material from
places shown on the plans or as directed by the Engineer
and of stockpiling that material where shown on the plans
or directed by the Engineer.
B. Construction Methods
Trash, wood, brush, stumps and other objectionable material
at the storage site shall be removed and disposed of as
directed by the Engineer prior to the beginning of work
required by this item. The base material, including any
asphalt mat, which may not be shown on the plans, shall be
cleaned of all dirt or other objectionable material.
Asphaltic materials shall be broken into pieces not more
than two inches in size and incorporated uniformly with the
salvaged base material. Material to be salvaged shall be
worked into stockpiles or windows and loaded by approved
equipment into approved equipment for hauling to the
stockpile site. It shall be the responsibility of the
Contractor that all the available material shall be
salvaged and kept reasonably free of soil from subgrade or
road bed during the salvaging operations. The operation
shall be conducted in such manner as not to interfere with
traffic, drainage or the general requirements of the work.
After the material is deposited in the stockpile area, it
shall be worked into a neat compact stockpile.
D-4 6
9. TOLERANCE IN PAVEMENT THICKNESS
.., The thickness of the pavement shall be determined by average
f :caliper measurement of cores tested in accordance with ASTM
C-174.
Pavement thickness shall be not less than the specified
minimum thickness.
When the measurement of any core is less than the specified
minimum thickness, the actual thickness of the pavement in
this area shall be determined by taking additional cores at
not less than 10 -foot intervals parallel to the centerline in
each direction from the affected location until each
direction from the affected location until in each direction
a core is found which is not deficient. Areas found
deficient in thickness shall be removed and replaced with
pavement of the minimum thickness specified.
�., Cores shall be obtained at the discretion of the Engineer.
10. PERFORMED PAVEMENT MARKINGS
'^ A. Description: This work will consist of furnishing and
installing retroreflective preformed pavement markings in
accordance with this provision and in reasonably close
r conformity with the dimensions and lines shown on the
plans or established by the Engineer.
B. Materials: The preformed markings shall consist of white
or yellow films with pigments selected and blended to
conform to standard highway colors through the expected
life of the film. Glass beads shall be incorporated to
r" provide immediate and continuing retroflection.
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The size, quality and refraction index of the glass beads
shall be such that the performance requirements for the
markings shall be met. The bead adhesion shall be such
that beads are not easily removed when the material
r„ surface is scratched with a thumbnail.
The film shall have glass bead retention qualities such
that when a 2" x 6" sample is bent over a 1/2" diameter
mandrel, with the 2" dimension perpendicular to the
E mandrel axis, microscopic examination of the area on the
mandrel show no more than 10% of the beads with
,.. entrapment by the binder of less than 40%.
Preformed words and symbols shall conform to the
...
applicable shapes and sizes as outlined in the "Texas -
D -47
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Manual on Uniform Traffic Control Devices for Streets and
Highways," dated 1980, or as modified.
The preformed markings shall be capable of being adhered
to asphalt concrete or portland cement by a pre -coated
pressure sensitive adhesive. A primer may be used to
precondition the pavement surface. The preformed marking
film shall mold itself to pavement contours by the action
of traffic. The pavement marking films also shall be
capable of application on new, dense and open graded
..asphalt concrete wearing courses during the paving
operation in accordance with the manufacture's
instructions. After application, the markings shall
identify proper solvents and/or primers (where necessary)
to be applied at the time of application, all equipment
necessary for proper application, and recommendations for
application that will assure the materials shall be
suitable for use for one year after the date of receipt.
C. Classification
The markings shall be general purpose high durability
retroflective pliant polymer film without liner backing
for preformed longitudinal and transverse markings.
Words and symbols are required to have liner backing for
proper shipping and handling.
D. Requirements
1. Composition: The retroreflective pliant polymer
pavement marking film shall consist of a mixture of
high quality polymeric materials, pigments and glass
beads distributed throughout its base cross sectional
area, with a reflective layer of beads
bonded to the top surface.
2. Reflectance: The white and yellow films shall have
the following initial minimum reflectance values at
0.2 degrees and 0.5 degrees observation angles and
86.0 degrees entrance angle as measured in
accordance with the testing procedures of Federal
Test Method Standard 370. The photometric quantity
to be measured shall be specific luminance (SL), and
Shall be expressed as millicandelas per square foot
per foot candle. The metric equivalent shall be
expressed as millicandelas per square meter per lux.
The test distance shall be 50 feet (15m) and the
sample size shall be a 2.0 x 2.5 feet rectangle
(0.61 x 0.7m).
D-48
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E The angular aperture of both the photoreceptor and
light projector shall be 6 minutes of arc. The
reference center shall be the geometric center of
the sample, and the reference axis shall be taken
perpendicular to the test sample.
Observation White Yellow
Angle 0.2 0.5 0.2 0.5
SL 550 380 410 250
3. Acid Resistance: The beads shall show resistance to
corrosion of their surface after exposure to a 1%
solution (by weight) of sulfuric acid. The 1% acid
solution shall be made by adding 5.7 cc of
concentrated acid into 1000 cc of distilled water.
CAUTION: always add the concentrated acid into the
water, not the reverse. The test shall be performed
as follows:
Take a 1" x 2" sample, adhere it to the bottom of a
glass tray and place just enough acid solution to
completely immerse the sample. Cover the tray with
a piece of glass to prevent evaporation and allow
the sample to be exposed for 24 hours under these
conditions. Then decant the acid solution (do not
rinse, touch, or otherwise disturb the bead
surfaces) and dry the sample while adhered to the
glass tray in a 150 degree F (66 degree C) oven for
approximately 15 minutes. Microscopic examination
(20X) shall show no more than 15% of the beads
having a formation of a very distinct opaque white
(corroded) layer on their entire surface.
4. Reflectively Retention: To have a good, effective
performance life, the glass beads must be strongly
bonded and not be easily removed by traffic wear.
The following test shall be employed to measure
reflectively retention:
Taber Abraser Simulation Test
Using a Taber Abraser with an H-18 wheel and
a 125 gram load, the sample shall be
inspected at 200 cycles, under a microscope,
to observe the extent and type of bead
failure.
D-49
No more than 15% of the beads shall be lost
due to popout and the predominate mode of the
failure shall be "wear down" of the beads.
5. Skid Resistance: The surface of the retroreflective
pliant polymer film shall provide an initial minimum
skid resistance value of 45 BPN when tested
according to ASTM E-303-74.
6. Tensile Strength and Elongation: The film shall have
a minimum tensile strength of 150 pounds per square
inch of cross-section when tested according to ASTM
D 638-76, except that a sample 6" x 1" shall be
tested at a temperature between 70 degrees F and 80
degrees F using a jaw speed of 10 to 12 inches per
minute. The sample shall have a minimum elongation
of 75% at break when tested by this method.
7. Thickness: The film without adhesive shall have a
minimum thickness of 0.06".
8. Effective Performance Life: The film, when applied
according to the recommendations of the
manufacturer, shall provide a neat, durable marking
that will not flow or distort due to temperature if
the pavement surface remains stable. Although
reflectivity is reduced by wear, the pliant polymer
shall provide a cushioned, resilient substrate that
reduces bead crushing and loss. The film shall be
weather resistant and, through normal traffic wear,
shall show no fading, lifting, shrinkage,
significant tearing, roll back, or other signs of
poor adhesion, which will significantly impair the
intended usage of the marking for a period of one
year after installation.
E. Installation:
1. Newly Paved Asphalt Concrete Surface: These markings
shall be applied when directed by the Engineer after
application of emulsion.
2. Newly Paved Portland Concrete Surface: These
markings shall be applied before the road surface is
open to public traffic. The surface shall be
and blasted, and primers, as recommended by the
manufacturer, shall be used.
3. Existing Road Surface: When markings are applied to
existing road surfaces, application shall be made in
accordance with the manufacturer's recommendation.
D-50
General Note: The City of Lubbock Traffic Engineering
Department will have the final say as to whether primer
is needed for proper installation of preformed markings
when surface temperature is below 590F.
4:
F. Method of Measurement: Linear pavement markings will be
7 measured in linear feet, complete -in-place for the width
L specified.
7 Word and symbol pavement markings will be measured in
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units of each.
G. Basis of Payment: Retroreflective preformed pavement
markings will be paid for at the contract unit price,
which price shall be full compensation for cleaning and
preparing the pavement surface for furnishing and placing
all materials and for all materials, labor, tools,
equipment and incidentals necessary to complete the work.
r.. Payment will be made under:
Payment Item Pay Unit
Preformed Pavement Marking, linear (width) Linear Foot
Preformed Pavement Marking, words/symbols Each
*" 11. CORRUGATED STEEL PIPE
s
A. Foundation
The pipe shall be bedded in a foundation of stable earth
material, accurately shaped to fit the bottom of the pipe
for at least 10 percent (10%) of its overall height.
Where rock exists within a depth of 0.75 D below the pipe
(D = pipe diameter) it shall be removed below grade and
replaced with suitable material so that a slightly
yielding compacted earth cushion is provided below the
pipe a minimum of 12 inches deep.
B. Backfillin
Select material from excavation or borrow shall be placed
along both sides of the completed structure equally, in
uniform layers not exceeding 6 inches in depth (loose
measurement), wetted if required and thoroughly compacted
between adjacent pipes, and between the pipe and the
,. trench, or for a distance each side of the pipe equal to
the diameter of the pipe. Backfill material shall be
compacted to the same density requirements as specified
for adjoining sections of embankment in accordance with
r Section 2 (Earth Work) of these specifications.
D-51
Pipe damaged by the Contractor's operations shall be
removed and replaced at the contractor's expense.
D-52
SITE WORK MEASUREMENT AND PAYMENT
GENERAL
The unit price bid on each item, as stated in the proposals,
shall include furnishing all labor, superintendence,
machinery, equipment and materials, except materials
specified to be furnished by the owner, necessary or
,.. incidental to complete the various items of work in
accordance with the plans and specifications. Cost of work
or materials shown on the plans or called for in the
specifications and on which no separate payment is made
shall be included in the bid prices on the various pay
items.
1. PAVING (2" T.H.D. TYPE "C" A C ON 3" OF BLACK BASE AND
6" OF CALICHE SUB -BASE)
Measurement shall be made of the actual area and shall be
paid for at the unit price per square yard of paving This
unit price shall be full compensation for all work,
including subgrade preparation, all excavation of fill,
compacting, blading, wetting and rolling, loading, hauling
and wasting all excess subgrade material, removing and
disposing of all obstructions as become necessary and for
furnishing and placing black base or caliche base materials,
1-1/2" of type "C" Hot -Mix, including prime and tack coat, a
1:2 dilute emulsion at the rate of .10 gallon per square
yard on the finished asphalt surface, including hauling and
delivering to the street, spreading, blading, mixing,
sprinkling, compacting, rolling, hauling and placing all
materials and all manipulations, labor, tools, equipment,
traffic provisions, barricades and flagmen and other
incidentals necessary to complete the work as herein
specified.
2. RE -SURFACING
Measurement shall be made of the actual area and shall be
paid for at the unit price per square yard of paving . This
unit price shall be full compensation removal and disposal
of existing surfaces (asphalt and concrete), all sawing,
brooming, blading, wetting and rolling, loading, hauling and
wasting all excess excavated material, removing and
disposing of all obstructions noted on the plans or as
become necessary, prime coat and tack coat, and for
furnishing and placing all surface material including a 1:2
dilute emulsion at the rate of .10 gallon per square yard on
the finished asphalt surface, including freight, preparing, -
hauling and placing all materials and all manipulations,
labor, tools, equipment, and incidentals necessary to
complete the work as herein specified.
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3. REMOVAL AND STOCKPILING OF EXISTING PAVING AND BASE
Measurement shall be made of the actual paved area removed
and shall be paid for the unit price bid per square yard of
removal. Unless an apparent error has been made, payment
will be based on the quantity given in the Proposal. This
unit price shall be full compensation for scarifying,
removing, windrowing, or stockpiling; for preparing the
stockpile area; for hauling of salvaged material, for
spreading, blading, shaping and finishing this stockpile;
and for all manipulations, labor, tools, equipment, and
incidentals necessary to complete the work.
4. 3 SACK CEMENT STABILIZED CALICHE
This item is to be utilized for backfill in soft areas or
subgrade in close proximity to utility lines, manholes,
valve boxes, etc., as designated and approved by the
Engineer. The Contractor shall be paid the unit price bid
per cubic yard as needed and shall include all materials,
mixing, hauling, placing, cleaning, curing and for all
manipulations, labor, equipment, appliances, tools, fuel and
incidentals necessary to complete the work as directed by
the Engineer.
5. CONCRETE DRIVEWAY ADJUSTMENT
The area of concrete sidewalk or driveway will be determined
by measurement of the sidewalk or driveway in place.
Payment shall be made for the actual area of concrete
sidewalk or driveway at the unit price bid per square yard.
This unit price shall be full compensation for subgrade
preparation including all excavation or fill, blading,
wetting and rolling, loading, hauling and wasting all excess
excavated material, removing and disposing of all
obstructions noted on the plan or as may become necessary;
and for furnishing and placing all material, all
manipulations, labor, tools, equipment and incidentals to
complete the work.
6. ASPHALT PARKING LOT OR DRIVEWAY ADJUSTMENT (1-1/2"
T.H.D. TYPE "D" A.C. ON 6" OF CALICHE BASE)
Measurement shall be made of the actual area and shall be
paid for at the unit price bid per square yard of paving.
This unit price shall be full compensation for all work,
including subgrade preparation, all excavation of fill,
compacting, blading, wetting and rolling, loading, hauling
and wasting all excess subgrade material, removing and
disposing of all obstructions as become necessary and for
furnishing and placing caliche base materials, 1-1/2" of
Type "C" Hot -Mix, including prime and tack coat, including
hauling and delivering, spreading, blading, mixing,
sprinkling, compacting, rolling, hauling and placing all
SW -2
materials and all manipulations, labor, tools, equipment,
traffic provisions, barricades and flagmen and other
incidentals necessary to complete the work as herein
specified.
7. CORRUGATED METAL PIPE CULVERTS
Measurement shall be made along the flowline of the
installed pipe. Payment shall be made for the actual length
of pipe in place at the unit price bid per linear foot.
This unit price shall be full compensation for all work,
including removal of existing pipes, excavation, foundation
preparation, furnishing and installing new pipe, backfilling
and disposal of all excess materials.
S. GRAVEL DRIVEWAY ADJUSTMENT
Measurement shall be made of the actual area and shall be
paid for at the unit price bid per square yard of paving.
This unit price shall be full compensation for all work,
including subgrade preparation, all excavation of fill,
compacting, blading, wetting and rolling, loading, hauling
and wasting all excess subgrade material, removing and
disposing of all obstructions as become necessary and for
furnishing and placing caliche base materials and gravel
surface materials and other incidentals necessary to
complete the work as herein specified.
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SPECIAL CONDITIONS
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Ole TO:
f
NOTICE OF ACCEPTANCE
The City of Lubbock, having considered the proposals submitted and opened on the _day of
198, for work to be done and materials to be furnished in and for:
as set forth in detail in the Specifications, Plans, and Contract Documents for such work for the City of Lubbock;
it appearing that your proposal is fair, equitable and to the best interest of said City, please take notice that
said proposal was accepted by the City Council of the City of Lubbock on the day of 198_ at
the bid price contained therein, subject to the execution of and furnishing of ail contract documents, bonds, cer-
tificates of insurance, and all other documents specified and required to be executed and furnished under the con-
tract documents. It will be necessary for you to execute and furnish to the City of Lubbock all such documents
within ten (10) days from your receipt of this Notice.
The five percent (5%) bid security, submitted with your proposal, will be returned upon the execution of
such contract documents and bonds within the above specified ten (10) day period. In the event you should fail to
execute and furnish such contract documents and bonds within the time limit specified, said bid security will be re-
tained by the City of Lubbock.
CITY OF LUBBOCK
Owner's Representative
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