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Home My WebLink AboutResolution - 3720 - Contract - Ronnie Zahn Paving Inc - Strip Paving, North Avenue N - 09/26/1991HW : j s RESOLUTION Resolution No. 3720 September 26, 1991 Item #25 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 Ronnie Zahn Paving, Inc. for North Avenue "N" Strip Paving, attached herewith, which shall be spread upon the minutes of the Council and as spread upon the minutes of this Council shall constitute and be a part of this Resolution as if fully copied herein in detail. Passed by the City Council this 26th ATTEST: e boya, pity bec !APPROVED,0 TO CONTENT: Gene Ei-d§j Purthasing Manager APPROVED AS TO FORM: O a �ol �il ar Assistant ity Attorney day of September , 1991. /Er. C. McM , MAYOR CITY OF LUBBOCK SPECIFICATIONS FOR NORTH AVENUE "N" - STRIP PAVING BID # 11518 CITY OF LUBBOCK Lubbock, Texas i� � 7z° CITY OF LUBBOCK SPECIFICATIONS for TITLE: NORTH AVENUE "N" STRIP PAYING ADDRESS: BID NUMBER: 11518 PROJECT NUMBER: 1441-553101-9681 CONTRACT PREPARED BY: Purchasing Department -1- (THIS PAGE LEFT BLANK INTENTIONALLY) P e INDEX r { 4 PAGE 1. NOTICE TO BIDDERS ..........................................................................................3 (� 2. GENERAL INSTRUCTIONS TO BIDDERS............................................................................5 ` 3. BID PROPOSAL - BID FOR LUMP SUM CONTRACTS .................................................................10 1 4. PAYMENT BOND ..............................................................................................14 5. PERFORMANCE BOND..........................................................................................17 6. CERTIFICATE OF INSURANCE ..........................................................:.......................20 7 I 7. CONTRACT..................................................................................................22 8. GENERAL CONDITIONS OF THE AGREEMENT .......................................................................24 9. CURRENT WAGE DETERMINATIONS..... . .........................................................................42 7 10. SPECIFICATIONS............................................................................................43 �. 11. SPECIAL CONDITIONS .............................................................. 12. NOTICE OF ACCEPTANCE......................................................................................45 pm w. R' C l —2- (THIS PAGE LEFT BLANK INTENTIONALLY) i i !f L ago NOTICE TO BIDDERS i Cr ; 1 i i i -3- (THIS PAGE LEFT BLANK INTENTIONALLY) 7 7 NOTICE TO BIDDERS BID # 11518 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., Roan L-04, Lubbock, Texas, 79401, until 2:00 o'clock p.m. on the 12th day of September 1991.1or 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: NORTH AVENUE "N° - STRIP PAVING 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 atoud. 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 of Lubbock will consider the bids on the 26th day of September, 1991,, 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 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. Bidders are required, whether or not a payment or performance bond is required, to submit a cashiers 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 execute all necessary bonds (if required) within 10 days after notice of award of the contract to him. It shalt 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. 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. r 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 3rd day of September. 1991, at 10:00 o'clock a.m., Committee Conference Roan 9103, Municipal Building, 1625 13th Street. CITY OF LUBBOCK BY: Gene Eads, C.P.M. Purchasing Manager 0 ADVERTISEMENT FOR BIDS BID # 11518 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 September, 1991 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: NORTH AVENUE "N" - STRIP PAVING 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 3rd day of September. 1991, at 10:00 o'clock a.m., Committee Conference Room 103, Municipal Building, 1625 13th Street. F4Genee Eads, C.P.M. PURCHASING MANAGER (THIS PAGE LEFT BLANK INTENTIONALLY) i �,. GENERAL INSTRUCTIONS TO BIDDERS 1 i (THIS PAGE LEFT BLANK INTENTIONALLY) w 0 t .W ` GENERAL INSTRUCTIONS TO BIDDERS SCOPE OF WORK The work to be done under the contract documents shatt consist of the following: 261 wide strip paving improvements for.Morth Avenue "N" from North Loop 289 to Marshall Street. The contractor shall furnish all labor, superintendence, machinery, equipment and all materials necessary to r" complete this project in accordance with contract documents. 2. CONTRACT DOCUMENTS All work covered by this contract shalt be done in accordance with contract documents described in the Gen- eral Conditions. All bidders shalt 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. 3. PLANS FOR USE BY BIDDERS It is the intent of the City of Lubbock that alt 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. 4. TIME AND ORDER FOR COMPLETION The construction covered by the contract documents shalt be fully completed within 50 (FIFTY) working days from the date specified in the Notice to Proceed issued by the City of Lubbock to the successful bidder. 6 The Contractor wilt 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 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- t tion of the project within the time specified. P 5. PAYMENT All payments due to Contractor shall be made in accordance with the provisions of the General Conditions of the contract documents. 6. AFFIDAVITS OF BILLS PAID r 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 F.. pending, of which the Contractor has been notified. h ` -5- 7. MATERIALS AND WORKMANSHIP The intent of these contract documents is that only materials and workmanship of the best quality and grade Witt be furnished. The fact that the specifications may fail to be sufficiently complete in some detail Witt not relieve the Contractor of fult 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 frill not relieve the Contractor of fullresponsibility 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 shalt be guaranteed against de- fective materials and workmanship. Prior to final acceptance, the Contractor shall furnish to the Owner, a written general guarantee which shall provide that the Contractor shalt 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 wilt be furnished one set of plans and specifications, and related contract documents for his use during construction. Plans and specifications for use during construction wilt only be furnished di - reedy 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. .6- 4 12. PROTECTION OF SUBSURFACE LINES AND STRUCTURES It shall 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 lines and utilities of which it has knowledge.' How- ever, such fact shalt 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, at Contractor's expense. 13. BARRICADES AND SAFETY MEASURES The contractor shall, at his own expense, furnish and erect such barricades, fences, tights and danger sig- nals, and shall take such other precautionary measures for the protection of persons, property and the work as may be necessary. 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 tights shalt not cease until the date of issuance to Contractor of City's certificate of 7 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 atl cases where written permission is obtained for the use of explosives, the Contractor shalt assume full responsibility for all damage which may occur as a direct or indirect result of the blast- ing. In addition, in all cases where explosives are authorized to be used, the Contractor shalt use utmost care so as not to endanger life or property and the Contractor shalt further use only such methods as are currently utilized by persons, firms, or. corporations engaged in similar type of construction activity. Explosive materials shalt 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, shalt not relieve the Contractor of responsibility for any damage resulting from his blasting operations. r., 15. CONTRACTORIS REPRESENTATIVE The successful bidder shall be required to have a responsible local representative available at all times while 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 POO -7- 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. 1, 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 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. .8- 7 The Contractor shalt 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 laborer, 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 shalt 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 COPT 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). I' (h) Specifications. (i) Insurance Certificates. r(j) All other documents made available to bidder for his inspection in accordance with the Notice to i 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. I -9- (THIS PAGE LEFT BLANK INTENTIONALLY) P 4 N �.. BID PROPOSAL F l 4 . f I� 1 L Y k b f (THIS PAGE LEFT BLANK INTENTIONALLY) il BID PROPOSAL BID FOR UNIT PRICE PLACE • DATE: PROJECT NO: Proposal of / 6t'L1l (hereinafter called "Bidder") i To the Honorable Mayor and City Council City of Lubbock, Texas (hereinafter called "Owner") Gentlemen: ! The Bidder in with your invitation for bids for the construction of 'go IP ,A,`. 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 in 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 50 (FIFTY) consecutive working 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. J- F 1 J� Enclosed with this proposal is a Cashiers Check or Certified Check for Dollars (S ) or a Proposal Bond in the sum of Dollars (S >, r 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 tails to execute the necessary contract documents and the required 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 documents made available to him for his inspection in accordance with the Notice to Bidders. Contrac or a By: (Seal if Bidder is a Corporation) "' 9:2 v X 7M ATTEST: Secre ary I rr 0 d i EXHIBIT A, PAGE 1 BID PROPOSAL BID FOR UNIT PRICE CONTRACTS Item Quantities Total No. & Units Description of Item & Unit Prices Amount --------------------------------------------- 1. 6,500 S.Y. 1-1/2" compacted T.H.D. Type "C" A.C. paving including subgrade preparation, 6" of caliche base, prime and tack coat, and 1:2 dilute emulsion treatment at a rate of 0.10 gallon per square yard within ten days of the place- ment of the A.C. surface, complete in place, per square yard: • _5I DOLLARS ($ gS ) CENTS/S.Y. 2. 905 S. Y. Two feet of 6" thick caliche base on each side of Asphalt paving, including subgrade preparation: //_d d DOLLARS ($ 1 J��- "l"► CENTS/S.Y. $0.3 2S �, _ TOTAL OF BID ITEMS 1 & 2 (THIS PAGE LEFT BLANK INTENTIONALLY) LIST OF SUBCONTRACTORS This form shall be completed and submitted with the Bidder's Proposal. I. Z. 3. 4. 5. 6. 7. 8. 9. 10. yz�A -13- Minority Owned Yes No (THIS PAGE LEFT BLANK INTENTIONALLY) F L . r a �eoeo�y BID BOND Know all men by these presents: That Ronnie Zahn Parking, Inc. (hereinafter called the Principal) as Principal, and the MERCHANTS BONDING COMPANY (Mutual) a corporation of the State of Iowa, with its Home Office in the City of Dep Moines, Iowa, (hereinafter called Surety), as Surety, are held and firmly bound to CitY of Lubbock Lubbock, Texas (hereinafter called the Obligee) in the full and just sum of ($5% of greatest amount bid) nollars good and lawful money of the United States of America, to the payments of which sum of money well and truly to be made, the said Principal and Surety bind themselves, their and each of their heirs, executors, administrators, successors and assigns, jointly and severally, firmly by these presents. Signed, sealed and dated this 12th day of September 1>? 91 THE CONDITION OF THIS OBLIGATION IS SUCH, that, if the Obligee shall make any award to the Principal for North Avenue N, Strip Paving Project # 1441-553101-9681 Lubbock, Texas according to the terms of the proposal or bid made by the Principal therefor, and the Principal shall duly make and enter into a contract with the Obligee in accordance with the terms of said proposal or bid and award, and shall give bond for the faithful performance thereof with the MERCHANTS BONDING COMPANY (Mutual) and Surety, or with other Surety or Sureties approved by the Obligee; or if the Principal shall, in case of failure to do so, pay to the Obligee the damages which the Obligee may suffer by reason of such failure, not exceeding the penalty of this bond, then this obligation shall be null and void; otherwise it shall be and remain in full force and effect. IN TESTIMONY WHEREOF, the Principal and Surety have caused these presents to be duly signed and sealed. Ronnia ahn Paving, Inc. Witness: Aincipal By Attest. MERG A NTSBON I/NG C%OM AN�YY Mutual) Frederick G. W�by, Att ney—in—Fact j MERCHANTS BONDING COMPANY (Mutual) DES MOINES, IOWA POWER OF ATTORNEY Know All Men By These Presents. that the MERCHANTS BONDING COMPANY (Mutual). a corporation duly organized under the laws of the State of Iowa, and having its principal office in the City of Des Moines. County of Polk. State of Iowa, hath made, constituted and appointed, and does by these presents rhake, constitute and appoint Frederick G. Wisby or Barbara K. Wisby of Lubbock and State of Texas its true and lawful Attorney -in -Fact, with full power and authority hereby conferred in its name, place and stead, to sign, execute. acknowledge and deliver in its behalf as surety: Any and all bonds or undertakings, provided that no bond or undertaking executed under this authority shall exceed in amount the sum of FIVE HUNDRED THOUSAND ($500,000.00) DOLLARS and to bind the MERCHANTS BONDING COMPANY (Mutual) thereby as fully and to the same extent as if such bond or undertaking was signed by the duly authorized officers of the MERCHANTS BONDING COMPANY (Mutual), and all the acts of said Attorney, pursuant to the authority herein given, are hereby ratified and confirmed. This Power-of-Atlomey is made and executed pursuant to and by authority of the following By -Laws adopted by the Board of Directors of the MERCHANTS BONDING COMPANY (Mutual). ARTICLE 2, SECTION 6A. — The Chairman of the Board or President or any Vice President or Secretary shall have power and authority to appoint Attorneys -in -Fact, and to authorize them to execute on behalf of the Company. and attach the seal of the Company thereto, bonds and undertakings, recognizances, contracts of indemnity and other writings obligatory in the nature thereof. ARTICLE 2, SECTION 6B. — The signature of any authorized officer and the Seal of the Company may be affixed by facsimile to any Power of Attorney or Certification thereof authorizing the execution and delivery of any bond, undertaking, recognizance. or other suretyship obligations of the Company, and such signature and seal when so used shall have the same force and effect as though manually fixed. In Witness Whereof, MERCHANTS BONDING COMPANY (Mutual) has caused these presents to be signed by its Vice President and Executive Vice President, and its corporate seal to be hereto affixed, this 1st day of January A.D., 1990 Attest: MERCHANTS BONDING COMPANY (Mutual) • O\N G . Co /RPO t By :mac We President : S~, STATE OF IOWA y recutive V,ce Preside rr . COUNTY OF POLK ss. •,d� ,ate: On this 1st da of ' RodneyBliss III, to me y January 1990 before me appeared M.J. Long and personally known, who being N (M duly sworn did say that they are Vice President and Executive Vice President respectively of the MERCHANTS BONDING COMPANY (Mutual), the corporation described in the foregoing instrument, and that the Seal affixed to the said instrument is the Corporate Seal of the said Corporation and that the said instrument was signed and sealed a behalf of said Corporation by authority of its Board of Directors. In Testimony Whereof, I have hereunto set my hand and affixed my Official Seal, at the City of Des Moines, Iowa the day and year first t above written. •• • G. BRU • tel/�� . • �? Notary P" blit, Polk County, Iowa ffr.•�� IOWA m 0•. .••, • : Qv : MY Commission Expires '% STATE OF IOWA 8-4-92 • 49 91 AL 5 COUNTY OF POLK ss. I, M.J. Long, Vice President of the MERCHANTS BONDING COMPANY (Mutual), do hereby certify that the above and foregoing is a true and correct copy of the POWER OF ATTORNEY, executed by said MERCHANTS BONDING • COMPANY (Mutual), which is still in force and effect. , • ..... • In Witness Whereof, 1 have hereunto set my hand and affixed the seal of the rCompany, at .' �O�tiG . Co j.0 . this 12th day of September 19,91 ' • A �2 0 < '.. December 31, 1991 1 3g 3 ' yThis power of attorney expires y;6 ' PAYMENT BOND -14- (THIS PAGE LEFT BLANK INTENTIONALLY) i KNOW ALL MEN BY THESE PRESENTS, tha Principat(s), and 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 (hereinafter called the PH ipal(s), as (hereinafter called the` Surety(s), as Sprat are td and firmly bound to hie Ci't�i of Lubbe�Jc (hereinafter called the Obligee), in the amount of i� LL+ d—""` Dollars <S�ilyj"/.'Z) lawful 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 severally, firmly by these presents. W REAS, the Principal has entered into a certain written contract with the 0 o�G iW— �ltgee, rater the day of ,19��,to 7 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 IS SUCH, that if the said Principal shalt 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; 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 Sess1on,'1959,-and'all llaVRities on` this bond shalt be determined in accordance with the provisions of said Article to the same extent as if I t,wete copied at length herein. BOND CHECK BEST RATING UC NS1 I TEXAS -15- �?fE Oz BY IN LIITNES Y7"'57 R F, the said Principal (s) and Surety (s) have signed and sealed this instrument this vg _ day of19�. Z'e ✓� ' l �u Surety Principal y: anile �=�� Oir►�,T�, — ' By: ry Title) By: (Title) _ By: (Title) The undersigned surety company represents that;'t is duly qualified to do business in Texas, and hereby des- ignates �_�/il�s t�� 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 Surety ' J .^ Approved as to form: City of ubbock 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. -16- ERCHANTs BONDING COMPANY (Mutual) DES MOINES, IOWA POWER CSF ATTORNEY ;.. Know All Men By These Presents, that the MERCHANTS BONDING COMPANY (Mutual), a corporation duly organized under the laws of the State of Iowa, and having its principal office to the City of Des Moines, County of Polk, State of Iowa, hath made, const luted and appointed, and does by these presents make, constitute and appoint Fwderick G. Wisby or Barbara K. Wisby of Lubbock and State of Texas its true and lawful Attorney -in -Fact, with full power ,^ and authority hereby conferred in its name, place and stead, to sign. execute. acknowledge; and deliver in its behalf as surety. Any and all bonds or undertakings, provided that no bond or undertaking executed under this authority shall exceed in amount the sum of FIVE HUNDRED THOUSAND ($500,000.00) DOLLARS and to bind the MERCHANTS BONDING COMPANY (Mutual) thereby as fully and to the same extent as if such bond or undertaking was signed by the duly authorized officers of the MERCHANTS BONDING COMPANY (Mutual), and all the acts of said Attorney, pursuant to the authority herein given, are hereby ratified and confirmed. This Power-of-Attomey is made and executed pursuant to and by authority of the following By -Laws adopted by the Board of Directors of the MERCHANTS BONDING COMPANY (Mutual). ARTICLE 2, SECTION 6A. — The Chairman of the Board or President or any Vice President or Secretary shall have power and authority to appoint Attorneys -in -Fact, and to authorize them to execute on behalf of the Company, and attach the seal of the Company thereto, bonds and undertakings, recognizances, contracts of indemnity and other writings obligatory in the nature then eot. ARTICLE 2, SECTION 6B. — The signature of any authorized officer and the Seal of the Company may be affixed by facsimile to any Power of Attorney or Certification thereof authorizing the execution and delivery of any bond, undertaking, recognizance, or PM other suretyship obligations of the Company, and such signature and seat when so used shall have the same force and effect as though manually fixed. In Witness Whereof, MERCHANTS BONDING COMPANY (Mutual) has caused these presents to be signed by its Vice President and Executive Vice President, and its corporate seal to be hereto affixed, this 1 st day of January A.D , 1990 Attest: MERCHANTS BONDING COMPANY IMutual) I By PM Vice President • S'i ;.,,.,„ ✓, .. 1 pi<�. STATE OF IOWA F . COUNTY OF POLK w On this 1St day of January 1990 before me appeared MJ Luny and r•• Rodney Bliss III, to me personally known, who being by me duly sworn did �,ay that they are Vice President and Executer Vire President respectively of the MERCHANTS BONDING COMPANY (Mutual), the Corporation described in the forego rig instrument, and itial the Seal affixed to the said instrument is the Corporate Seal of the said Corporation and that the said instrument was signed and sealed in behalf of said Corporation by authority of its Board of Directors. In Testimony Whereof, I have hereunto set my hand and affixed my Otlicial Seal, at the, City of Des Moines. Iowa the day and year first above written. G B R &4, V/ � • �?� • 'Y i • i Q i - Norary Public, Polk counly Iowa r• IOWA m i My cOmnussron E.Paes • - • • O •'• •'� P STATE OF IOWA 8-4-92 ••• AV `�� .•• COUNTY OF POLK cs. • •'"•"•••" 1, M.J. Long, Vice President of the MERCHANTS BONDING COMPANY (Mutual), do hereby certify that the above and foregoing is a true and correct copy of the POWER OF ATTORNEY, executed by said MERCHANTS BONDING ` COMPANY (Mutual), which is still in force and effect. . • • G • • . CO In Witness Whereof, I have hereunto set my hand and affixed the Seal of the Company, at this 22nd day of October 19, 91 •• �0\N� ��•'pPPOF! ' 9 `. � �• '-. December 31, 1991 • y . 1933 '.' �6 %• f This power of attorney expires d� Yy 1 � � k ro 1 I� k t f� 1 k , PERFORMANCE BOND f 7 k " 4 (THIS PAGE LEFT BLANK INTENTIONALLY) M BOND CHECK BEST RATING ` LICENSED IN TEXAS STATUTORY PERFORMANCE BOND PURSUANT TO ARTICLE 5160 �.. DATF_�,�!Z�/� BY OF THE REVISED CIVIL STATUTES OF TEXAS AS "T� AMENDED BY t ACTS OF THE 56TH LEGISLATURE, REGULAR SESSION 1959 KNOW ALL MEN BY THESE PRESENTS, that T_ (hereinafter called the Princupat(s), as Principalis), and r k�44/) old 7ao (he einafter called the Suret s), as Su et (s), are held and firmly bound t he City of Lubbock (hereinafter called the Obligee), in the amount of o.� ,lam n b—�l-}af 661,1(4 •�,/(�, SG/,lawful money of the United States for the payment whereof, the said Principal A Surety bind tFi4:i0eives, and their heirs, administra- tors, executors, successors and assigns, jointly and severally, firmly by these presents. WHEREA , thf Princii t has entered into a certain written contract with the bbtigee, dated thea? day of 19%/� to r /4jF 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. 1 WIjNESS� WHEREOF, the sa.d Principal (s) and Surety (s) have signed and sealed this instrument this day of 19�. Surety j� Principal (Tit ! � By: (Title) By: (Title) By: (Title) s r' -18- The undersigned surety company represents that it is duly qualified to do business in Texas, and hereby designates 6'.(n(1S ,K)If 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. Surety -- *B . (Title) Approved as to Forme �� City of Lubbock By. .HI..A ity Attorney *Note: if signed by an officer of the Surety Company, there must be on file a certified extract from the by -taws showing that this person has authority to.sign such obligation. .If signed by an Attorney in Fact, we must have copy r of power of attorney for our files. -19- MERCHANTS BONDIN COMPANY (Mutual) f bES MOINES, IO WA; . POWER OF ATTORNEY Know All Men By These Presents, that the MERCHANTS BONDING COMPANY (Mutual). a corporation duty organized under the laws of the State of Iowa, and having its principal office in the City of Des Moines, County of Polk. State of Iowa. hath made, constituted and - appointed, and does by these presents make, constitute and appoint -... Frederick G. Wisby or Barbara K. Wisby J of Lubbock and State of Texas its true and lawful Attorney -in -Fact, with full power and authority hereby conferred in its name, place and stead, to sign, execute. acknowledge and deliver in its behalf as surety: t Any and all bonds or undertakings, provided that no bond or undertaking executed under this authority shall exceed in amount the sum of FIVE HUNDRED THOUSAND ($5W,000,00) DOLLARS and to bind the MERCHANTS BONDING COMPANY (Mutual) thereby as fully and to the same extent as, it such bond or undertaking was - signed by the duly authorized officers of the MERCHANTS BONDING COMPANY (Mutual), and all the acts of said Attorney, pursuant to the authority herein given, are hereby ratified and confirmed. This Power-of-AttomeyIs made and executed pursuant to and by authority of the following By -Laws adopted by the Board of Directors of the MERCHANTS BONDING COMPANY (Mutual). ARTICLE 2, SECTION 6A. -- The Chairman of the Board or Presidentor any Vice President or Secretary shall have power and authority to appoint Atlorneys-in+act, and to authorize them to execute on behalf of the .Company, and attach the seal of the Company thereto, bonds and undertakings, recognizances, contracts of indemnity and other writings obligatory in the nature thereof. ARTICLE 2, SECTION 6B. `-- The signature of any authorized officer and the Seal of the Comparly may be affixed by facsimile to x any Power of Attorney or Certification thereof authorizing the execution and delivery of any bond, undertaking, recognizance, or Pool other suretyship obligations of the Company, and such signature and seal when so used shall :have the same force and effect as though manually fixed. In Witness Whereof, 'MERCHANTS BONDING COMPANY (Mutual) has caused these presents to be signed by its Vice President and Executive Vice President, and its corporate seal to be hereto affixed, this 1st day of January A.D., 1990 Attest: MERCHANTS BONDING COMPANY (Mutual) o\t��Co .• a `. Vice President:yE.rcv2e We.+Ede rf STATE OF IOWA J COUNTY OF POLK es. • `yd aC. On this 1st day of January - 1990 before me appeared M.J. Long and ^ Rodney Bliss III, to me personally known, who being by me duly sworn did say that they are Vice President and Executive Vice President respectively of the MERCHANTS BONDING COMPANY (Mutual), the corporation described in the foregoing instrument, and that the Seat affixed to the said instrument is the Corporate Seal of the said Corporation and that the said instrument ,wits signed and seated in behalf of said Corporation by authority of Pts Board of Directors. ^ In Testimony Whereof, I have hereunto set my hand and affixed my Official Seal, at the City of Des Moines, Iowa the day and year first above written. 3,Pool •••• W 4 `. a Notary Public. Polk county, fowa ;n s IOWA M . My Commission Eap,res Z : ' 8-4-92 :* �j,'' ..,...•' �Q STATE OF IOWA • q R 1 AL 5 COUNTY OF POLK ss. . •••• ""`��•• I, M J long Vice President of the MERCHANTS BONDING COMPANY (Mutual), do hereby certify that the above and foregoing is'a true and correct copy of the POWER OF ATTORNEY.` executed by said MERCHANTS BONDING COMPANY (Mutual), which Is still in force and effect. . • • • • • . In Witness Whereof, I have hereunto set my hand and affixed the seal of the Company, at o�O�N . • .. .• thus 22nd -day of ' October 19, 91 •• Q, • pR �R' MI� December 31, 1991y This power of attorney expires .•vd t\ ;• No Text CERTIFICATE OF INSURANCE kk L. -20- (THIS PAGE LEFT BLANK INTENTIONALLY) P. 1 PRODUCER CERTIFICATE OF INSURANCE ISSUE DATE (MM/DDNY 10-22-91 THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY A CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFI( Wisby & Associates DOES NOT AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY LICIESRELO . tt 11 nG t P. O. Box 53205 Limits s'WAPAh1'te F?(Yj jfA L�vV lipA �n Lubbock, Texas 79453 COMPANY LETTER A Bituminous Casualty,Corporation COMPANY B INSURED LETTER jJ. $. Fire Insurance Company Ronnie Zahn Paving, Inc. LETTER COMPANY C+ & Ronnie Zahn, Individual COMPA Route 10, BOX 820 ETTER"Y Lubbock, Texas 79404 _.. COMPANY E LETTER 'COVERAGES THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIC INDICATED, NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH TH CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERM EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. CO TYPE OF INSURANCE POLICY NUMBER LTR POLICY EFFECTIVE POLICY EXPIRATION DATE (MM/DD/YY) DATE (MM/DD/YY) LIMITS GENERAL LIABILITY A X GENERAL AGGREGATE S 2,000 . COMMERCIAL GENERAL LIABILITY PRODUCTS-COMP/OP AGG S 2#000 CLAIMSMADE X OCCUR. CLP 2 095 543 10-01-91 10-01-92 PERSONAL & ADV. INJURY $ 1,000 OWNER'S & CONTRACTOR'S PROT. EACH OCCURRENCE S 4000 -' - - --- - FIRE DAMAGE (Any one fire) S 50 MED. EXPENSE (Any one person) $ 5 AUTOMOBILE LIABILITY X ANY AUTO COMBINED SINGLE IT $ 11 000 ALL OWNED AUTOS SCHEDULED AUTOS 133 610847 3 10-01-91 10-01-92 BODILY INJURY (per person) S X HIRED AUTOS __....._ X NON -OWNED AUTOS BODILY INJURY (Per accident) S GARAGE LIABILITY PROPERTY DAMAGE S EXCESS LIABILITY EACH OCCURRENCE S UMBRELLA FORM AGGREGATE y OTHER THAN UMBRELLA FORM WORKER'S COMPENSATION Application has been sent to STATUTORY LIMITS AND Work Comp. Pool. Policy & CertificatLEACHACCIDENT S 500 EMPLOYERS' LIABILITY Will be forthcomingDISEASE—EACH 11-2-91 11-2-92 DISEASE—POLICY LIMIT S 500 EMPLOYEE s 500 OTHER DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES/SPECIAL ITEMS City of Lubbock Bid #11518 North Ave. "N° Strip Paving CERTIFICATE HOLDER CANCELLATION City of Lubbock SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE TI P. O. BOX 2000 EXPIRATION DATE THEREOF, THE ISSUING COMPANY WILL ENDEAVOR - Lubbock, Texas 79457 MAIL ID— DAYS WRITTEN NOTICE TO THE CERTIFICATE HOLDER NAMED TO Ti Purchasing Dept. LEFT, BUT FAILURE TO MAIL SUCH NOTICE SHALL IMPOSE NO OBLIGATION ( Attn : Gene Eades LIABILITY OF ANY KIND UPON THE COMPANY, ITS AGENTS OR REPRESENTATIVE AUTHORIZED REPRESENTATIVE %edeklick g. %Asbq ACORD 25-S (7/90) Q7A�;Vt{U GOKP0RATION 1 No Text ao%�1�:e,• CERTIFICATE OF INSURANCE I PRODUCER 9 r f� f ISSUE DATE (MM/DD/YY 10-22-9] THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY A CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFII Wisby & Associates DOES NOT AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY P. 0. Box 53205_OLICIES_I3E S �oW. s own are at po icy ince p i Lubbock, Texas 79453 COMPANIES AFFORDING COVERAGEon COMPANLETTER Y A Hartford Accident & Indemnity Co. COMPANY INSURED LETTER B Kyle Zahn dba KZ . Paving COMPANY MPA Y C P. 0. Box 53095 TTER Lubbock, Texas 79453 Er ANER Y D COMPANY LETTER E COVERAGES THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIL INDICATED, NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THI CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERM; EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. T TYPE OF INSURANCE POLICY EFFECTIVE POLICY EXPIRATION LTR POLICY NUMBER DATE (MM/DD/YY) DATE (MM/DD/YY) LIMITS __.- nna. LINOILI l T COMMERCIAL GENERAL LIABILITY CLAIMS MADE OCCUR. OWNER'S 8 CONTRACTOR'S PROT. AU I UMU9aE LIABILITY ANY AUTO ALL OWNED AUTOS SCHEDULED AUTOS HIRED AUTOS NON -OWNED AUTOS GARAGE LIABILITY IT UMBRELLA FORM OTHER THAN UMBRELLA FORM WORKER'S COMPENSATION A AND EMPLOYERS' LIABILITY UTHEH GENERAL AGGREGATE S PRODUCTS-COMP/OP AGG. $ PERSONAL & ADV. INJURY $ EACH OCCURRENCE $ FIRE DAMAGE (Any one fire) $ MED. EXPENSE (Any one person) $ COMBINED SINGLE LIMIT S BODILY INJURY (Per person) $ BODILY INJURY (Per accident) S PROPERTY DAMAGE $ uu.caa EACH OCCURRENCE S AGGREGATE $ 71WZR CM3450 11-7-90 11-7-91 STATUTORY LIMITS *Work Comp. is an assigned risk polit,,gHACCIDENT s 500 Certificate will be forthcoming DISEASE—POLICY LIMIT S 500 DISEASE—EACH EMPLOYEE $ 500 .,.., -1-1c�nlwnarLU{iAIIUN31VEHICLES/SPECIAL ITEMS City of Lubbock Bid #11518 North Ave. 'IN" Strip Paving rl • • 11 .-- 1 - nL/LYCn City of Lubbock P. 0. Box 2000 Lubbock, Texas 79457 Purchasing Dept. Attn: Gene Eades CANCELLATION SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE TH EXPIRATION DATE THEREOF, THE ISSUING COMPANY WILL ENDEAVOR T MAIL 10 DAYS WRITTEN NOTICE TO THE CERTIFICATE HOLDER NAMED TO TH LEFT, BUT FAILURE TO MAIL SUCH NOTICE SHALL IMPOSE NO OBLIGATION O LIABILITY OF ANY KIND UPON THE COMPANY, ITS AGENTS OR REPRESENTATIVE: AUTHORIZED REPRESENTATIVE Cr hcdekick g. CUisbg (THIS PAGE LEFT BLANK INTENTIONALLY) MERCHANTS BONDING COMPANY Mutual DES MOINES, IOWA POWER OF ATTORNEY Know All Men By These Presents. that the MERCHANTS BONDING COMPANY (Mutual). a corporation duly organized under the laws of the State of Iowa. and having its principal office in the. City of Des Moines. County of Polk. State of Iowa. hath made. constituted and appointed, and does by these presents make, constitute and appoint Frederick G. Wisby or Barbara K. Wisby of Lubbock and State of Texas its true and lawful Attorney -in -Fact. with full power and authority hereby conferred in its name, place and stead, to sign, execute, acknowledge and deliver in its behalf as surety: Any and all bonds or undertakings, provided that no bond or undertaking executed under this authority shall exceed in amount the sum of FIVE HUNDRED THOUSAND ($500,000.00) DOLLARS and to bind the MERCHANTS BONDING COMPANY (Mutual) thereby as fully and to the same extent as if such bond or undertaking was signed by the duly authorized officers of the MERCHANTS BONDING COMPANY (Mutual). and all the acts of said Attorney, pursuant to the authority herein given, are hereby ratified and confirmed. This Power-of-Attomey is made and executed pursuant to and by authority of the following By -Laws adopted by the Board of Directors of the MERCHANTS BONDING COMPANY (Mutual). ARTICLE 2, SECTION 6A. — The Chairman of the Board or President or any Vice President or Secretary shall have power and authority to appoint Attorneys -in -Fact, and to authorize them to execute on behalf of the Company and attach the seal of the Company thereto, bonds and undertakings, recognizances, contracts of indemnity and other writings obligatory in the nature thereof. ARTICLE 2, SECTION 6B. — The signature of any authorized officer and the Seal of the Company may be affixed by facsimile to any Power of Attorney or Certification thereof authorizing the execution and delivery of any bond, undertaking• recognizance, or other suretyship obligations of the Company and such signature and seal when so used shall have the same force and effect as though manually fixed. In Witness Whereof, MERCHANTS BONDING COMPANY (Mutual) has caused these presents to be signed by its Vice President and Executive Vice President, and its corporate seal to be hereto affixed, this 1st day of January A.D., 1990 Attest: MERCHANTS BONDING COMPANY (Mutual) iG Co•. By Y STATE OF IOWA vice President �ieci,t 19:3 e P,esld . COUNTY OF POLK ss. '.�y........\�a�;• On this 1st da of Januar ao • • • ' ' ' ' y Y 1990 before me appeared M.J. Long and Rodney Bliss III, to me personally known, who being by me duly sworn did say that they are Vice President and Executive Vice President respectively of the MERCHANTS BONDING COMPANY (Mutual), the corporation described in the foregoing instrument, and that the Seal affixed to the said instrument is the Corporate Seal of the said Corporation and that the said instrument was signed and sealed in behalf of said Corporation by authority of its Board of Directors. ( In Testimony Whereof, I have hereunto set my hand and affixed my Official Seal, at the City of Des Moines. Iowa the day and year first j above written. ' G. BRV••� • l/ a. y • 3C) • Notary Public. Polk County. Iowa IOWA m �'• • • My Comnnssion Expres • Z .� 8-4-92 r, �• Oj.�'••...••'' �PSTATE OF IOWA • •9q I AL COUNTY OF POLK ss. I, M.J. Long, Vice President of the MERCHANTS BONDING COMPANY (Mutual), do hereby certify that the above and foregoing is a true and correct copy of the POWER OF ATTORNEY. executed by said MERCHANTS BONDING COMPANY (Mutual), which is still in force and effect. .. • • .. In Witness Whereof, I have hereunto set my hand and affixed the seal of the Company. at••• �O�N� • J0 this 22nd dayof October 19, 91 y• :— o 1 33 power of expires December 31, 1991 :yJ� , This p (THIS PAGE LEFT BLANK INTENTIONALLY) CONTRACT I� t_ r -22- (THIS PAGE LEFT BLANK INTENTIONALLY) r r i CONTRACT STATE OF TEXAS COUNTY OF LUBBOCK THIS AGREEMENT, made and entered into this September 26, 1991, 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 RONNIE ZAHN PAVING, INC 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 # 11518 - NORTH AVENUE 'IN" STRIP PAVING PROJECT 1N THE AMOUNT OF $46,561.25 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 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, Texas in the year and day first above written. AS TO CONTENT: 'lam D h, APPROVED AS TO RM: ATTEST: *COrrlte Secret ry k C -23- CITY OF LUBBOCK, TEXAS (OWNER) s r By: • r Awe� MAYOR RONNIE ZAH V_ING, IMC. CONTRAC / By: TITLE:- ) re COMPLETE ADDRESS: ROUTE 10, BOX 820 LUBBOCK. TX 79413 No Text GENERAL CONDITIONS OF THE AGREEMENT -24- (THIS PAGE LEFT BLANK INTENTIONALLY) 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 shall 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: RONNIE ZAHN PAVING, INC , 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 HERTEL, CITY ENGINEER, 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 par- ticular 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 shall 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 shall 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, an question 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 shall 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. is r -25 7. WRITTEN NOTICE Written notice shall 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. a. WORK Unless otherwise stipulated, the Contractor shall provide and pay for all materials, supplies, machinery, equipment, tools, 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 shalt be held to refer such recognized standards. ALL work shalt 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 shall 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 shall be furnished with one copies of all Plans, Profiles and specifications without expense to him and he shall 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 will 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 will 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. .26- 13. LINES AND GRADES rAll lines and grades shall 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 shall give the Owner's Repre- sentative ample notice of the time and place where lines and grades will be needed. Alt 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., shalt be replaced by the Owner's Representa- tive at Contractor's expense. 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 FM Representative shall review all work included herein. He has the authority to stcp the work whenever such t stoppage may be necessary to insure the proper execution of the contract. In order to permit delays and E disputes and to discourage litigation, it is further agreed that the Owner's Representative shalt, in all cases, determine the amounts and quantities of the several kinds of work which are to be paid for under this contract. He shalt determine all questions in relation to said work and the construction thereof, and shall, 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- PM 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 shall 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. f�I 7 .27- 16. CONTRACTOR'S DUTY AND SUPERINTENDENCE The Contractor shalt give personal attention to the faithful prosecution and completion of this contract and shalt 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 shalt 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 tack of such supervision shall be grounds for suspending operations of the Contractor. The work, from its commencement to completion, shatt be under the exclusive charge and control of the Con- tractor and alt risk in connection therewith shall be borne by the Contractor. The Owner or Owner's Representatives will not be responsible for the acts or emissions 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 - Hats 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 shall 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 tabor, toots, 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 shalt at alt 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, shall be constructed and maintained by the Contractor in such manner and at such points as shall be approved by the Owner's Representative and their use shalt be strictly enforced. -28- 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 shalt 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- pte 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 4 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 shalt 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 shalt 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. t~ — 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 shalt 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 tine, 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 shalt be paid according to the quantity actually done and at the unit price established for such I work under this contract; otherwise such additional work shalt be paid for as provided under Extra Work. In -29- 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 preparation for the work as originally 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 "actual 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 shall 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. -30- f 25. DISCREPANCIES AND OMISSIONS C 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 all 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. 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 shalt, 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 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 taws and building and construction codes. All machinery and equipment and other physical hazards shalt be guarded in accordance with the "Manual of Accident Prevention in Construction" of Associated General Contractors of America, except where incompatible with federal, state or municipal laws or regulations. The Contractor, his sureties and insurance carriers shalt 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 shalt be the sole responsibility of the Contractor, in his sole discretion as 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. -31. 28. CONTRACTOR'S INSURANCE The Contractor shall procure; and carry at his sole cost and expense through the life of this contract, in- 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 shalt be provided covering the operation of each subcontractor. A. Comprehensive General Liability Insurance The contractor shall have Comprehensive General Liability Insurance with limits of 5300,000 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 Nonownership 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. D. Builder's Risk Insurance The Contractor shall obtain a Builder's Risk policy in the amount of (100% of poten- tial loss) naming the City of Lubbock as insured. _ -32. 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. P^ F. Worker's Compensation and Employers Liability Insurance As required by State statute covering all employees whether employed by the Contractor or any Sub- contractor on the job with Employers Liability of at least $100,000 limit. G. Proof of Coverage 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) The name and address of the insured. (2) The location of the operations to which the insurance applies. (3) The name of the policy and type or types of insurance in force thereunder on the date borne by such certificate. (4) The expiration date of the policy and the limit or limits of liability thereunder on the 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. (6) 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. (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 will 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. s _ If during the progress of the work, Contractor shalt allow any indebtedness to accrue for work furnished by t: any of those designated in the preceding paragraph and shalt 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 -33- shalt 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 tetters 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 shall 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 toss 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 taws, ordinances and regulations, which in any manner effect the contract or the work, and shalt 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 shall 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 shalt 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, shall be controlling, and shalt 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. 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 1250.00 (TWO HUNDRED FIFTY DOLLARS) PER DAY, not as a penalty, but as liquidated -34- damages for the breach of the contract as herein set forth for each and every calendar day that the Contractor shalt be in default after the time stipulated for completing the work. r 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 shalt 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, Mess otherwise herein specifically provided, that the Con- tractor shalt be allowed to prosecute his work at, such time and sessions, in such order of precedence, and in such manner as shalt 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 Owner4s Representative, schedules which shall show the order in which the Contractor proposes to carry on the work, with dates at c 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 wilt 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 I -35- 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 shalt 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 shalt constitute a waiver of all claims against Owner which have not theretofore been timely filed as provided in this contract. -36- 41. PARTIAL PAYMENTS 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 shalt 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 shalt 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% shall be retained until final payment, and further, less ell previous payments and sit 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 shall 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 shall issue to the Owner and Contractor his certificate of completion, and thereupon it shall 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 shalt 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 shall 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 shalt at his own expense promptly replace such condemned materials with other materials conforming ` to the requirements of the contract. Contractor shall also bear the expense of restoring alt 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 shalt 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 shalt appear within a period of one (1) year from the E. i -37- 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 Owners 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 Owners Representative, any demand for arbitration shalt 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 shalt 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 shall 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 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 shall 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. .38- I The arbiters, if they deem the case demands it, are authorized to award the party whose contention is sus- tained, such sums as they deem proper for the time, expense and trouble incident to the appeal, and if the 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 shalt be delivered to the Contractor. After receiving said notice of abandonment, the Contractor shall not remove from the work any machinery, equipment, toots, 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 Ownc:r 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 shall 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 sum which would have been payable under this contract, if the same had been com- pleted 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 sealed bids, after notice published as required by taw, 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 shalt 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, shalt be '., issued. A complete itemized statement of the contract accounts, certified to by Owners 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 r.. 30 days after the date of certificate of completion. i -39- 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, toots, materials or supplies on the site of the work, notice thereof, together with an itemized list of such equipment and materials shalt 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 maiting, 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 Workperformedat 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 shalt then make a final statement of the balance due the Contractor by deducting from the above estimate all previous payments by the Owner and all other sums that may be retained by the Owner under the terms of this Agreement, and shalt certify same to the Owner who shall 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 wilt 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. -40- 53. LOSSES FROM NATURAL CAUSES Unless otherwise specified herein, all toss 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, shalt be sustained and borne by the Contractor at his own cost and expense. 54. INDEPENDENT CONTRACTOR Contractor is, and shall remain, an independent contractor with full, , c omplete 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 shall have the right to ob- serve Contractor's work during his performance and to car out the other carry prerogatives which are expressly reserved to and vested in the Owner or Owner's Representative hereunder, is not intended to and shall 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. 55. CLEANING UP The Contractor shall at all times keep the premises free from accumulation of debris caused by the work, and at the completion of the work he shall remove all such debris and also his tools, scaffolding, and surplus materials and shall leave the work room clean or its equivalent. The work shalt be left in good order and condition. In case of dispute Owner may remove the debris and charge the cost to the Contractor. -41- (THIS PAGE LEFT BLANK INTENTIONALLY) r i CURRENT WAGE DETERMINATIONS _42_ (THIS PAGE LEFT BLANK INTENTIONALLY) . .f Resolution #2502 •,. " January 8, 1987 Agenda Item #18 r ,' 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. 5159a; and I WHEREAS, such wage rates were established by Resolution No. 719 1. :°enacted February 12, 1981, updated by Resolution No. 1590 enacted February 123, 1984; and .t WHEREAS, such rates need to be updated at the present time in order J 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 :land purposes: t Exhibit A: Building Construction Trades j Exhibit B: Paving and Highway Construction Trades Exhibit C: Electrical -Trades j Exhibit D: Overtime Rate Exhibit E: Weekend and Holiday Rate !Such wage rates are hereby found and declared to be the general prevailing iff rate of per diem wages.in all localities where public works are undertaken !I 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 1887. Ranett6,-Boyd, City Secretary G APPROVED T ONTENT: r Bi 1 P yne, D rector of Building Services c k B.C. MCMINN, MAYOR APPROVED AS TO FORM: Do Id G. Vandiver, First Assistant City Attorney EXHIBIT A City of Lubbock Building Construction Trades Prevailing Rates Craft Acoustical Ceiling Installer Air Conditioner Installer Air Conditioner Installer -Helper Bricklayer Bricklayer -Helper Carpenter Carpenter -Helper Cement Finisher Drywall Hanger Electrician Electrician -Helper Equipment Operator - Heavy Light Floor Installer Glazier Insulator, Piping/Bailer Insulator -Helper Iron Worker Laborer, General Mortar Mixer Painter Plumber Plumber -Helper Roofer Roofer -Helper Sheet Metal Worker Sheet Metal Worker -Helper Welder - Certified Hourly Rate $11.60 8.35 5.50 10.50 5.00 11.00 5.50 7.35 8.70 10.50 5.25 8.00 5.70 8.00 7.50 9.50 5.00 7.30 4.75 5.60 8.75 9.25 6.00 7.65 4.75 8.75 5.50 8.00 Craft EXHIBIT B Paving and Highway Construction Prevailing Wage Rates Asphalt Heaterman Asphalt Shoveler Concrete Finisher Concrete Finisher -Helper Electrician Flagger Form Setter Form Setter -Helper Laborer, General Laborer, Utility Mechanic Mechanic -Helper POWER EQUIPMENT OPERATORS Asphalt Paving Machine Bulldozer Concrete Paving Machinist Front End Loader Heavy Equipment Operator Light Equipment Operator Motor Grade Operator. Roller Scraper Tractor Truck Driver - Light Heavy Hourly Rate $5.25 4.75 7.35 4.75 10.50 4.75 6.50 5.50 4.75 5.80 6.50 6.00 6.00 5.25 6.50 5.85 6.40 6.40 8.00 5.25 5.25 5.50 5.25 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 -43- (THIS PAGE LEFT BLANK INTENTIONALLY) 0 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 L 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 IV -1 r 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 from any sources. C. Water Water shall be clean, clear, free from oil, acid or organic matter and free from.injurious amounts of alkali, salts or other chemicals. D. Concrete Materials Test Pre -Construction Tests The contractor will submit test certificates from an 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. 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 IV -2 r 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 concrete and the exact each load represented by a E. Concrete Desictn the delivery ticket number for location in the work at which strength test is deposited. 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. IV -3 Mix Desian 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 per 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: Class 3 day 7 day A --- 2100 C --- 3000 E 2500 3000 F 2900 3500 Minimum Average for any test beam strength 600 28 day 3000 3600 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. IV -4 i 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 IV -5 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 I 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 7 alley returns, alley paving and reinforced gutter sections; Class F concrete is used for railroad sections. F" G. Mixing i 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 IV -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 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 (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 IV -6 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: IV -7 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 conrete 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: IV -7 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 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. 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 Mixing 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. IV -8 r c 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 r, 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 jL4 #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 r" 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 IV -9 The mixture shall consist of a uniform mixture of mineral aggregate and asphaltic material. The mineral 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 Extraction ASTM D-21721 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." S. 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. IV -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 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 IV -11 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 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 shaftsealsof the mixer shall be tight enough to prevent spilling of aggregate or mixture from the mixer. (7) Surge -Storage System IV -12 A surge -storage system maybe used. It shall be adequate to minimize production interruptions during the normal days 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. IV -13 r (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 enteEing 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) Surae Storage System A surge storage system may be used. It shall be adequate to minimize production interruption during IV -14 r the normal days 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 r, 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 IV -15 measuring device as required by the Item, "Weighing and Measuring Equipment". When a belt scale is used, mixture production shall be maintained to 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. (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 material feed control shall be coupled with the total aggregate weight measurement device in such manner as to automatically vary the asphalt feed as required to maintain the required proportion. (5) Drum Mix IV -16 i 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 4. 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. n (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 AndMeasuring 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 l approval of the equipment. D. Asphaltic Material Heating Equipment r 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 IV -17 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 on the paving mixture in place as the laydown operation. Rollers qualifications for their type IV -18 of the Contractor to have the job to properly compact required without delay to provided shall meet the as follows: a r 7 L x rr (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 IV -19 testing. Satisfactory templates shall be provided as required by the Engineer. (8) Alternate Eguinment 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 Mixin (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. IV -20 f r G - R4 1 - (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. IV -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 content will be produced. The differential in 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. (c) Drum -mix Plant The amount of aggregate and asphaltic material 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 days 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. IV -22 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 IV -23 < 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. 6 , H. Construction Methods (1) Temperature Requirements A. HMAC - November 1 until April 1 Y 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. r� 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 IV -23 or any part of the load may be rejected and payment will not be made for the rejected material. (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 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 course will be smooth, of uniform density, and will conform with the typical sections shown on the plans and to the lines and grades established IV -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 r undue displacement of the 'edge of the course does not occur. On deep lifts, the edge of the course may be rolled r' 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. Compacting (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 Engineer. Rolling shall be continued IV -25 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 Ipavement mixture which 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 ODenina 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 IV -26 r 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 40, unless otherwise shown on the plans when tested in accordance with ASTM D-2419. The percent of flat or elongated slivers of stone for �.. any course shall not exceed 25%, when tested in i accordance with Test Method Tex -224-F. Aggregate that appears susceptible to film stripping when tested in accordance with ASTM D-1075, minimum 70% I index of retained strength and tested in accordance with AASHTO T-283, minimum 70% tensile strength ratio, shall be rejected or conditioned with an anti -stripping agent as approved by the Engineer. r► r� IV -27 Y' Prior to stockpiling of aggregates cleaned of trash, weeds and grass smooth. Aggregates shall be separ of different gradation, such as a aggregate, and a small coarse agg that the grading requirements of t be met when the piles are combined mixture. No coarse aggregate stoc more than 10 percent by weight of pass a No. 10 sieve except as note provided for by special provision. stockpiles may contain small coars amount of up to 15 percent by weig which shall pass a 1/4 inch sieve the area shall be ind be relatively ited into stockpiles Large coarse -egate stockpile such ie specified type will in the asphaltic :pile shall contain materials that will I on the plans or Fine aggregate aggregate in the it, (100 percent of i. 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 85% crushed faces when tested in accordance with Test Method (Tex -460-A). The aggregate shall have a maximum of 30% loss when subjected to 5 cycles ofthe Magnesium Sulfate Soundness Test (A.S.T.M. C-88-83). 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. IV -28 1 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 ASTM D-4318. However, where the coarse aggregate r! 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, ASTM C-131. Coarse aggregate from each source shall meet the abrasion requirements specified. 1 (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. 7 The plasticity index of that part of the sand passing the No.40 sieve shall not be more than 6 when tested in accordance with ASTM D-4318. The plasticity index of that part of the screenings passing the No. 40 sieve t shall not be more than 9, unless otherwise shown on plans, when tested by ASTM D-4318. Fine aggregate from each source shall meet plasticity requirements. ti.. Sand shall be composed of durable stone particles free from injurious foreign matter. Screenings shall be of 7 the same or similar material as specified for coarse aggregate. �.. (4) Mineral Filler IV -29 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 ASTM D-242 it shall meet the following grading requirements: Per Cent By Weight Passing a No. 30 sieve 100 Passing a No. 80 sieve 95 to 100 Passing a No. 200 sieve 70 to 100 (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. IV -30 (C) g Pavin Mixtures TYyes 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 well graded from coarse to fine and shall not vary from the low limit on one sieve to the high limit on the adjacent sieve, or vice versa. The final designated gradations shall produce a relatively smooth curve when plotted on a 0.45 power semilogarithmic gradation chart when tested in accordance with ASTM C-136. (1) Master Gradation Specifications Mixture Type City of Lubbock (C.O.L.) Sieve Type "C" Type "D" Size (Residential Traffic Only) Percent by Weight Passing Sieves 1" 100 --- 3/4" 98-100 --- 1/2" 81-93 100 3/8" 65-85 85-100 No.4 43-63 50-70 No.8 33-45 35-47 No.16 22-34 23-35 No.30 13-27 14-29 No.50 7-19 8-20 No.100 3-11 4-12 No.200 1-6 1-6 Bitumen percent 4.0 - 7.5 4.0 - 7.5 (of total mix) (D) Laboratory Control 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. IV -31 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 peration: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 (Job Mix Formula). 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: Percent by weight Material Tolerance Plus or Minus Aggregate passing No. 4 sieve or larger 4 percent Aggregate passing Nos. 8,16,30, 50 sieves 3 percent Aggregate passing Nos. 100 & 200 sieves 2 percent Bitumen 0.25 percent (F) Extraction/ Gradation Tests And Design Criteria (1) Samples of the mixture when tested in accordance with ASTM D-2172 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 herein production will be discontinued until such time as the Hot -Mix Asphaltic Concrete mixture has been corrected and IV -32 61 i removed and replaced at no cost to the Owner. (2) Design Method Thoroughfare Residential Traffic Traffic Min. Max. Min. Max. Marshall Method No. of compaction blows, each end of specimen 75 50 Stability, Lbs. 1800 --- 1200 --- Flow, units of 0.01 in 8 14 8 18 % Air Voids Surfacing or Leveling 3 5 3 5 Percent Voids in Mineral Aggregate 13 --- 14 --- (3) Sampling and Testing 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. Tests on Marshall specimens shall be made twice daily or as directed by the Engineer to retain job control. The mixture shall comply with the requirements of Table (2) above when tested in accordance with the Marshall method procedures contained in Chapter III of the Asphalt IV -33 Institute's Manual Series No.`2 (MS -2), current addition. If the laboratory stability and/or field tests 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/field tests 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 days 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 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 IV -34 r r 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. IV -35 (THIS PAGE LEFT BLANKA NTENTIONALLY) Details of Construction 1. CONCRETE A. Curb and Gutter (Class A -Concrete) Description This item shall consist of Portland Cement curb and gutter or 24" separate gutter as plans or as directed by the engineer, and constructed of Class A concrete. Included gutter item is the subgrade preparation an and shaping of the area behind the curb. 1. Curb Openings 24" concrete shown on the shall be in the curb and d the filling 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 Subcrrading (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. V-1 W 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 Makinv Joints 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. 5. 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 V-2 i f •r is r .. t 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. Concreteshallnot 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, 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 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 k V-3 r s 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 V-4 r . prior to the acceptance of said unit. 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 salad 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. 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. r1. Subarade Preparation (See Section V-2) 4 2. Reinforcing Steel - See Section 3 Under Materials of Construction C is i 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 (S) 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 61'x6" 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 V-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 is not 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 V-6 r r. ambient temperature islessthan 40 degrees F. It shall be the responsibility of the Contractor to anticipate as 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 sudden changes in the weather make such protection necessary. 4. Finishing 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 alley 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 V-7 r 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 j" 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. I 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 alley 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 V-7 r 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 occuring 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. Subcirade Preparation (See Section V-2) F. Reinforced Concrete Railroad Crossing (Class F Concrete) Description V-8 i M This item shall consist of the construction of Class F reinforced concrete as shown on Concrete Railroad Crossing Details. (File 12-B-92 [23). 1. 1. Subarade Preparation (See Section V-2) Section V-2) 2. Reinforcing Steel Bars to be Used) Pavement - Class C Concrete Description 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. 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 l 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-2) 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 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 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 V-9 r 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 C150, the specific surface area of Type I cement shall not exceed 21000 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 as 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% V-10 Unless specified otherwise, fine aggregate shall meet the following grading requirements: ti Retained on 3/8" sieve.....................0% Retained on No.4 sieve.... ...... o ..... 0 to 5% V-11 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 byweight 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 Fr 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. i.. 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, r 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 Aggregate 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: ti Retained on 3/8" sieve.....................0% Retained on No.4 sieve.... ...... o ..... 0 to 5% V-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 V-12 t. 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 burrs. 9. Steel Reinforcement Unless otherwise shown on the plans, steel reinforcing 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 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). 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 i` 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 r e V-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, at joints 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. Finishin Machine-Fininshing. 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 V-14 is E„ uniform, or 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 l 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 concrete 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. V-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 unitvolumeof concrete) shall not exceed 0.85. Unless otherwise shown on plans the concrete shall contain not less thansixsacks 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. V-16 24. Workability of Concrete Concrete shall be uniformly plastic, cohesive and 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 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 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 following listed measures: a. Redesign of the batch b. Addition of mineral filler to fine aggregate c. Increase of cement content i Mixes will be designed and made in sufficient number to represent a wide range of water -cement ratios. These mixes shall comply with therequirementsherein prescribed for workability. From these preliminary tests the water -cement ratio required to produce concrete of the specified V-17 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 l 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 tested in accordance with THD Bulletin C-11. The slump shall not be less than 1 inch nor more than 3 inches. 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 the Engineer for consideration. i Mixes will be designed and made in sufficient number to represent a wide range of water -cement ratios. These mixes shall comply with therequirementsherein prescribed for workability. From these preliminary tests the water -cement ratio required to produce concrete of the specified V-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 V-18 r moist condition for at ' least 2 inches below the prepared surface. Sufficient subgrade shall always be prepared in r 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, 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. 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 �: V-19 .subgrade or shouldersadjacentto 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 Placin 1. Mixing 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. Placing 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 V-20 r r i 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. V-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 V-22 joint assembly will be disturbed. The exposed portion of the joint assembly shall be free of adherent concrete, 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. 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 Weakened plane joints shall consist of transverse 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 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 detailed on -the plans. Tracks adequately anchored, chalk, 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. 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 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 V-23 7 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. S. 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 V-24 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 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. 11. 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. F V-25 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 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. 11. 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. F V-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 Tess 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. V-26 I PW F2. EARTH WORK • 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 4 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. PM 2. Compaction Subgrade shall be compacted to 95% Standard Proctor Density (A.S.T.M. D-698) for all improvements except V-27 A. Subarade 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 r and sections as shown on the plans or as established by 1 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 4 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. PM 2. Compaction Subgrade shall be compacted to 95% Standard Proctor Density (A.S.T.M. D-698) for all improvements except V-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 determing 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. V-28 i Care shall be taken by the Contractor to use only topsoil soil 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 the alley outside of the limits of that all drainage in the alley will the concrete slab. Excess excavated hauled to any approved location. B. Embankment Description Prior to placing any Way" and/or "Clearing been completed on the which the embankment small excavations in shape the portion of the 'concrete slab so be to the invert of materials shall be embankment, all "Preparing Right -Of - and Grubbing" operations shall have excavation sources and areas over is to be placed. Stump holes or other the limits of the embankment shall be V-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. V-30 7 L Minor quantities of rock encountered in constructing earth embankment shall be incorporated in the specified r- 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 PM 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. r- t V-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 embankiment 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. V-32 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. 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 mulitiple 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% Standared Proctor Density (A.S.T.M. D-698) for all improvements except thoroughfare street paving shall be compacted to 100% Standard Proctor Density. V-33 Filling and/or backfillingshall 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. 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 mulitiple 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% Standared Proctor Density (A.S.T.M. D-698) for all improvements except thoroughfare street paving shall be compacted to 100% Standard Proctor Density. V-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% belowoptimummoisture 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. V-34 i 1, f 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. i —c A. ca. t.� g s Longitudinally a straightedge 10 feet lonhall be used to detect any deviation which shall be corrected as defects. 4. HOT MIX ASPHALTIC CONCRETE SURFACE A. Description This item shall consist of 1-1/2" compacted C.O.L. Type "C" or Type "D" 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. Sampling and Testing Hot Mix Asphaltic Concrete for Compaction V-35 r i 1. Failed Density or Weak Spots in Base' The finished caliche base shall be checked for density M 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 affectd, 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 F 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 i —c A. ca. t.� g s Longitudinally a straightedge 10 feet lonhall be used to detect any deviation which shall be corrected as defects. 4. HOT MIX ASPHALTIC CONCRETE SURFACE A. Description This item shall consist of 1-1/2" compacted C.O.L. Type "C" or Type "D" 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. Sampling and Testing Hot Mix Asphaltic Concrete for Compaction V-35 r i Hot mix asphaltic concrete will be accepted on a lot basis. A lot will consist of 1000 tons or each days production and will be divided into three (3) equal sublots. Pavement density will be determined by taking the average density for each lot, from the three sublots, the average Maximum Theoretical Density, taken from trucks delivering hot mix asphaltic concrete to the site. The samples will be tested in accordance with ASTM D-2041. Each lot of compacted pavement will be accepted, with respect to density, when the average field density is within the below listed specifications. Four field density determinations will be made for each lot. Cores taken from the pavement will be used to test the field density. The density of the cored samples will be determined in accordance with ASTM D-2726. Density Specifications Based on Maximum Theoretical Density Minimum = 92.5% Optimum = 96.0% Maximum 97.5% 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 1 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. V-36 The air temperature shall be taken in the shade away from artificial heat or as reported by the National Weather r 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 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. 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 -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 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 may be placed, and all rolling shall be completed during day -light hours. The inside of the truck body may be V-37 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. 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 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 A level up course, 1/21'`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 V-38 t . k . 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 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. 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 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 r. 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. V-39 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 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 straightedge 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 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 willmeet 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. V-40 j 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. f. 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. V-41 Dumping of the P g 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 r i 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 willobtain 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. .• 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. f. 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. V-41 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. 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. V-42 The cleanupshall include ude 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 PON between the property line and the curb. 6. PROTECTION OF EXISTING UTILITIES r" A. Adjustment 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 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 r 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 I� Lubbock Power and Light 762-6411,Ext.2554 City Traffic Shop 762-64110 Ext.2140,2144 �,. Energas Traffic Shop 741-4200 V-43 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. 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. V-44 r r x 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. 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 preparedroadbed as herein specified V-45 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 L underground utilities shall be as follows: Utility Sequence k Sewer First Electric (Primary) Second a Electric (Secondary) Third g Telephone Fourth (last if no power or T.V.) T.V. Cable Fifth Water Sixth .; Gas Seventh Traffic Engineering Eighth On allro'ects P 7 , 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 preparedroadbed as herein specified V-45 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 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 MArx— 1 E, 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. 9. TOLERANCE IN PAVEMENT THICKNESS ,. The thickness of the pavement shall be determined by average 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 detemined 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. 7 V-47 n a� (THIS PAGE LEFT BLANK INTENTIONALLY) SPECIAL CONDITIONS 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 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 case 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 r` 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 50 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 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 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, flag ers shall use a standard attire, flags and signals and follow the flaggingprocedures 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 r^ 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 r 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. SC -4 r 7 i (B) HMAC - April 1 till November 1 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 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 SC -5 r - curb and gutter will be replaced at the Contractor's expense. 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 SC -6 r I will be submitted to the Engineer for approval and test reports will be required every 30 days 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 s 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 a the Engineer. approval of (C) Cement Certified mill test on each car or transport. (D) Asphalt Certified Lab Test. 71 SC -7 (E) Density Test The City of Lubbock Testing Laboratory will provide density.tests on the ,base or subgrade. The City of Lubbock Lab will be the final authority on all tests _ (F) Paving Aggregate All stone shall h aximum of fifteen percent (15%) tested by the four (4) cycle ma sulfate so test A.S.T.M. performed b the City of Lu JQefer Jo Ma�etrlays o-' Con,s,/ruG4'%o'7• 12. SUBCONTRACTORS 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 SC -8 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 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. 14. WORKING HOURS Construction work under this contract requiring an inspector will not be performed on weekends or holidays unless the following conditions exist: 7 (A) The project being constructed is essential to ` the City of Lubbock's ability to provide the Flo 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 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 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. SC -9 No work will be allowed from November lst through January 2nd unless approved by the Engineer. 15. PARTIAL 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 proiect. 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 6:00 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 SC -10 7 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. 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. 18. TRAFFIC SIGNALS RELOCATIONS The traffic signals at this intersection will be relocated by City forces. Contractor will schedule his construction activities to permit installation of conduits, bases and signals as required by the City Traffic Engineering Department. Bidders are advised that the traffic signals are to remain in operation at all times. The order of construction work shall be coordinated with the Traffic Engineering Department to insure this. (Construction of the center islands must be completed before reconstruction of the corners of the intersection to allow new signal equipment to be installed and the signals to remain in operations during all times. After completion of the center islands, the City will install new poles and mast arms with new signal heads and make them operational. The City will then remove the existing poles and mast arms of the N.W. and S.E. corners after which the contractor may proceed with reconstruction of the N.W. and N.E. corners.) SC -11 (THIS PAGE LEFT BLANK INTENTIONALLY) '' r City of Lubbock P.O. Box 2000 Lubbock, Texas 79457 606-767-3000 October 14, 1991 RONNIE ZAHN PAVING, INC. ROUTE 10, BOX 820 LUBBOCK, TX 79413 SUBJECT: NORTH AVENUE "N" STRIP PAVING The City of Lubbock, having considered the proposals submitted and opened on the 12th day of September, 1991, for work to be done and materials to be furnished in and for: City of Lubbock Bid # 11518 North Avenue "N" Strip Paving 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 September 26, 1991, at the bid price contained therein, subject to the execution of and furnishing of all other documents specified and required to be executed and furnished under the contract 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 (5q) 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 retained by the City of Lubbock. CITY OF LUBBOCK ene Eads, C.P.M. Purchasing Manager No Text