HomeMy WebLinkAboutOrdinance - 2020-O0017 - Adopting The 2015 International Plumbing Code - 02/11/2020 First Reading Second Reading
January 28, 2020 February 11, 2020
Item No. 7.13 Item No. 7.9
ORDINANCE NO. 2020-00017
AN ORDINANCE AMENDING CHAPTER 28.10 OF THE CODE OF ORDINANCES OF
THE CITY OF LUBBOCK, TEXAS WITH REGARD TO ADOPTION OF THE 2015
INTERNATIONAL PLUMBING CODE AND PROVIDING FOR CERTAIN
AMENDMENTS THERETO TO MEET LOCAL CONDITIONS; PROVIDING A
PENALTY; PROVIDING A SAVINGS CLAUSE;AND PROVIDING FOR PUBLICATION.
WHEREAS the City Council of the City of Lubbock,Texas deems it in the best interest of the
health, safety, and welfare of the citizens of Lubbock to adopt the 2015 International Plumbing
Code for the City of Lubbock with certain amendments thereto to meet local conditions;NOW
THEREFORE:
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. THAT Chapter 28,Article 28.10 of the Code of Ordinances of the City of
Lubbock is hereby amended to read as follows:
ARTICLE 28.10 PLUMBING CODE
Division 1. Generally
28.10.001. Adopted.
The 2015 Edition of the International Plumbing Code, as published by the International
Code Council, Inc., as hereinafter amended, including Appendices C, D, E, and F is
hereby adopted as the plumbing code of the City of Lubbock, Texas. A copy of said
plumbing code is attached hereto and incorporated herein as though set out herein in
detail. References to the Plumbing Code in this chapter shall mean the 2015 Edition of
the International Plumbing Code. One copy of the 2015 International Plumbing Code
shall be filed with the City Secretary and a copy shall be maintained in the office of the
City Building Official. All such copies, with the amendments thereto, shall be open to
public inspection during the usual hours of business of the offices where they are
maintained.
28.10.002. Coordination of administrative provisions.
The administrative provisions contained in chapter 28, articles 28.01 through 28.08 of
this Code of Ordinances are applicable to this article; however, for purposes of
administering provisions related more specifically to the regulation of plumbing
systems installation, these supplemental administrative provisions have been provided.
Except as amended or supplemented within sections 28.10.002, 28.10.003, and
28.10.051 through 28.10.056, the entire text of chapter 1 of the 2015 International
Plumbing Code is deemed to be incorporated herein as though set out herein in detail.
Where a conflict arises between a provision contained within sections 28.10.002,
28.10.003, and 28.10.051 through 28.10.056 and articles 28.01 through 28.08 of this
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Code of Ordinances, it is the intent that the more specific shall govern, as determined
by the building official.
28.10.003 Supplemental administrative amendments.
(a) Fee schedule. Section 106.6.2 is hereby amended by inserting the following fee
schedule:
PLUMBING FEES*
$0.06 per sq. ft. of gross floor area under roof,
$50.00 minimum. (Where more than one
New Construction: inspection is required, an additional fee of
$15.00 shall be assessed for each additional
inspection)
Additions to floor area As for new construction
$2.00 per$1,000.00 valuation, $50.00
Alterations&remodeling (no minimum (Where more than one inspection is
change in building area): required, an additional fee of$15.00 shall be
assessed for each additional inspection) (See
Note 3)
Total re-plumb: As for new const.
Miscellaneous permits for $50.00 (Where more than one inspection is
new installations, required, an additional fee of$15.00 shall be
replacement and repair of: assessed for each additional inspection) Service
Water heaters, water lines, line tap fees, or adjustments in grade,where
sewer lines, gas lines, water needed, may involve extra fees. Contact the
softeners, irrigation systems, appropriate utility department.
fixed appliances, fixtures,
etc. requiring inspection
approval:
Permit fees, work
f i commencing prior to permit
approval:
Renewal of expired or As for building permit fees(see article 28.05),
involuntarily terminated except that permit fee calculations shall be
permits: based on this section.
Permit transfer fee:
Re-inspection Fees:
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*The fees in this schedule are all-inclusive for the collective plumbing work(water,
DWV, & fuel gas)performed in a building;they are not intended to be charged in
addition to the fees specified in article 28.15 of this chapter.
(b)Administrative amendments and cross-references to articles 28.01 through 28.08.
The following administrative provisions within chapter 1 of the International
Plumbing Code are hereby stricken, and the corresponding provisions within articles
28.01 through 28.08 of this Code of Ordinances shall govern, as indicated in table
28.10.003 below:
TABLE 28.10.003
ADMINISTRATIVE PROVISIONS CROSS-REFERENCE
Refer to
2015 Lubbock
International Section Heading/Subject Code of
Plumbing Ordinances
Code Section Chapter
Section
106.6.3 Fee refunds 28.05.109
108.4 Violation penalties 28.02.006
108.5 Stop work orders 28.02.007
109.1 through Means of appeal 2.03.491
109.7 through
2.03.495
See. 28.10.004 Technical amendments
(a) Protection against physical damage. Section 305.6 is hereby amended to read as
follows:
Section 305.6 Protection against physical damage. In concealed locations where
piping,other than cast-iron or galvanized steel, is installed through holes or notches
in studs,joists, rafters or similar members less than 1.5 inches (38 mm) from the
nearest edge of the member, the pipe shall be protected by steel shield plates. Such
shield plates shall have a thickness of not less than 0.0575 inch(1.463 mm) (No. 16
gage). Such plates shall cover the area of the pipe where the member is notched or
bored.
(b) Over-excavation. Section 306.2.1 is hereby amended to read as follows:
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306.2.1 Over-excavation. Where trenches are excavated below the installation level
of the pipe such that the bottom of the trench does not form the bed for the pipe, the
trench shall be backfilled to the installation level of the bottom of the pipe placed in
layers of 6 inches (152 mm) maximum depth and such backfill shall be compacted
after each placement. The backfill material may consist of sand or fine gravel, or
excavated material that complies with section 306.3.
(c) Drainage and vent water test. Section 312.2 is hereby amended to read as follows:
312.2 Drainage and vent water test. A water test shall be applied to the drainage
system either in its entirety or in sections. If applied to the entire system,all openings
in the piping shall be tightly closed,except the highest opening,and the system shall
be filled with water to point of overflow. If the system is tested in sections, each
opening shall be tightly plugged except the highest openings of the section under
test, and each section shall be filled with water, but no section shall be tested with
less than a five-foot head of water above floor height. In testing successive sections,
at least the upper 10 feet of the next preceding section shall be tested so that no joint
or pipe in the building, except the uppermost 10 feet of the system, shall have been
submitted to a test of less than a five-foot head of water above floor height. The
water shall be held kept in the system, or in the portion under test, for at least 15
minutes before inspection starts. The system shall then be tight at all points.
(d) Gravity sewer test. Section 312.6 is hereby amended to read as follows:
312.6 Gravity sewer test. Gravity sewer tests shall consist of plugging the end of the
building sewer at the point of connection with the public sewer, filling the building
sewer with water, testing with not less than a Moot head of water and maintaining
such pressure for 15 minutes.
(e) Ductless mini-split sstem traps. Delete Section 314.2.4.1.
(f) Sheet lead. Section 402.4 is hereby amended to read as follows:
402.4 Sheet lead. Sheet lead for pans shall not weigh less than two and one-half(2-
1/2) pounds per square foot coated with an asphalt paint or other approved coating.
(g) Sheet lead. Section 417.5.2.3 is hereby amended to read as follows:
417.5.2.3. Sheet lead. Sheet lead shall not weigh less than two and one-half(2-1/2)
pounds per square foot coated with an asphalt paint or other approved coating. The
lead sheet shall be insulated from conducting substances other than the connecting
drain by 15-pound asphalt felt or its equivalent. Sheet lead shall be joined by
burning.
(h) Water hammer. Section 604.9 is hereby amended to read as follows:
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604.9 Water hammer. The flow velocity of the water distribution system shall be
controlled to reduce the possibility of water hammer. An air chamber or a water-
hammer arrestor shall be installed where quick-closing valves are utilized, unless
otherwise approved. Water-hammer arrestors shall be installed in accordance with
the manufacturer's specifications. Water-hammer arrestors shall conform to ASSE
1010.
(i) Solvent cerne�. Section 605.22.3 is hereby amended to read as follows:
605.22.3 Solvent cementing. Joint surfaces shall be clean and free from moisture. A
purple primer that conforms to ASTM F 656 shall be applied. Clear primer in lieu
of purple is acceptable where joints are accessible. Solvent cement not purple in
color and conforming to ASTM D 2564 or CSA CAN/CSA-13137.3 shall be applied
to all joint surfaces. The joint shall be made while the cement is wet and shall be in
accordance with ASTM D 2855. Solvent-cement joints shall be permitted above or
below ground.
(j} Location of full-open valves. Section 606.1 is hereby amended to read as follows:
606.1 Location of full-open valves. Full open valves shall be installed in the
following locations:
I. On the building water service pipe from the public water supply.
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2. On the water distribution supply pipe at the entrance into the structure if
the water meter is more than 100 feet from the building.
3. On the water supply pipe to a gravity or pressurized water tank.
4. On the water supply pipe to every water heater.
(k) Location of shutoff valves. Section 606.2 is hereby amended to read as follows:
606.2 Location of shutoff valves. Shutoff valves shall be installed in the following
locations:
1. On the fixture supply to each plumbing fixture in other than bathtubs and
showers in one- and two-family and multiple-family residential occupancies,
and other than in individual sleeping units that are provided with unit shutoff
valves in hotels, motels, boarding houses and similar occupancies.
2. On the water supply pipe to each appliance or mechanical equipment.
(1) Slope of horizontal drainage pipe. Table 704.1 is hereby amended to read as
follows:
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TABLE 704.1
SLOPE OF HORIZONTAL DRAINAGE PIPE
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Size(inches) Minimum slope(inch per foot)
2-112 or less 1/4
3 to 5 118
6 or larger 1116
(m) Solvent cementing. Section 705.11.2 is hereby amended to read as follows:
705.11.2 Solvent cementinia. Joint surfaces shall be clean and free from moisture. A
purple primer that conforms to ASTM F 656 shall be applied. Clear primer in lieu
of purple primer is acceptable where joints are accessible. Solvent cement not purple
in color and conforming to ASTM D 2564 CSA CAN/CSA-13137.3, CSA
CANPCSA-B181.2 or CSA CAN/CSA-BV182.1 shall be applied to all joint
surfaces. The joint shall be made while the cement is wet and shall be in accordance
with ASTM D 2855. Solvent-cement joints shall be permitted above or below
ground.
Exception: A primer is not required where both of the following conditions apply:
1. The solvent cement used is third-party certified as conforming to ASTM D
2564.
2. The solvent cement is used only for joining PVC drain, waste and vent pipe
and fittings in non-pressure applications in sizes up to and including 4 inches
(102 mm) in diameter.
i (n) Installation of fittings. Section 706.3 is hereby amended to read as follows:
706.3 Installation of fittings. Fittings shall be installed to guide sewage and waste in
the direction of flow. Change in direction shall be made by fittings installed in
accordance with Table 706.3. Change in direction by combination fittings, side
inlets or increasers shall be installed in accordance with Table 706.3 based on the
pattern of flow created by the fitting. Double sanitary tee patterns shall not receive
the discharge of back-to-back water closets and fixtures or appliances with pumping
action discharge.
(o) Building drains and sewers. Table 710.1(1) is hereby amended to read as follows:
Table 714.1(1)BUILDING DRAINS AND SEWERS
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MAXIMUM NUMBER OF DRAINAGE FIXTURE UNITS CONNECTED TO ANY
PORTION OF THE BUILDING DRAIN OR THE BUILDING SEWER,INCLUDING
BRANCHES OF THE BUILDING DRAIN
Diameter of Slope per foot
pipe(inches)
1116 inch 118 inch 114 inch 112 inch
1-114 — 1 1
1-112 3 3
2 — 21 26
2-112 24 31
3 36 42 50
4 180 216 250
5 390 480 575
s
6 620 700 840 1000
8 1400 1600 1920 2300
10 2500 2900 3500 4200
12 3900 4600 5600 6700
15 7000 8300 10,000 12,000
a. The minimum size of any building drain serving a water closet shall be 3 inches.
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(p)Permit requirements. Section 717.1.1 is hereby amended to read as follows:
717.1.1 Permit requirements. A licensed plumbing contractor shall obtain a permit
under this code prior to the work being performed. The permit application shall
indicate if work in the City right-of-way will be necessary. If issued,the permit will
grant the licensed plumbing contractor temporary "permitted user" status, as
contemplated by Section 36.09 of the Lubbock Code of Ordinances, for limited
access to the city right-of-way. Excavation in the City right-of-way subjects the
permittee to all applicable requirements of Section 36.09 as well as this code, save
and except the requirement for a separate right-of-way permit. The limited access is
restricted to unpaved areas only and is defined as an excavation that is hand-dug
only (no mechanical excavation) and no more than three (3') feet in width adjacent
to the property line. The licensed plumbing contractor has the option of hiring a
"permitted user", as anticipated by Section 36.09, to perform the work in the public
right-of-way.
(q) Roof extension. Section 903.1 is hereby amended to read as follows:
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903.1 Roof Extension. All open vent pipes that extend through a roof shall be
i terminated not less than 10 inches above the roof. Where a roof is to be used for
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assembly or as a promenade, observation deck, sunbathing deck or similar purpose,
open vent pipes shall terminate not less than 7 feet above the roof.
(r) 1001.1 Scope Traps, Interceptors and Separators). Section 1001.1 is hereby
amended to read as follows:
100 1.1 Scope. This chapter shall govern the material and installation of traps,
interceptors and separators. See also divisions 5 and 6 of article 22.04 (wastewater
system) of the Lubbock Code of Ordinances.
(s) Storm drainage- eng eral (tests). Section 1101.4 is hereby amended to read as
follows:
1101.4 Tests. The building storm drain shall be tested within the building only and
shall not require 5-foot head, but roof drain level only.
(t) Roof design. Section 1101.7 is hereby amended to read as follows:
1101.7 Roof design. Roofs shall be designed for the maximum possible depth of
water that will pond thereon as determined by the relative levels of roof deck and
overflow weirs, scuppers, edges or serviceable drains in combination with the
deflected structural elements in accordance with Section 1611 of the International
Building Code. In determining the maximum possible depth of water, all primary
roof drainage means shall be assumed to be blocked. The maximum possible depth
of water on the roof shall include the height of the water required above the inlet of
the secondary roof drainage means to achieve the required flow rate of the secondary
drainage means to accommodate the design rainfall as required by Section 1106.
(u) Strainers. A new section 1105.3 is hereby added to read as follows:
1105.3 Strainers. Roof drains shall have strainers extending not less than 4 inches
(102 mm) above the surface of the roof immediately adjacent to the roof drain.
Strainers shall have an available inlet area,above roof level,of not less than one and
one-half times the area of the conductor or leader to which the drain is connected.
(v) Flat decks. A new section 1105.4 is hereby added to read as follows:
1105.4 Flat decks. Roof drain strainers for use on sun decks, parking decks and
similar areas that are normally serviced and maintained shall comply with Section
1105.3 or shall be of the flat-surface type, installed level with the deck, with an
available inlet area not Iess than two times the area of the conductor or leader to
which the drain is connected.
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(w) Size of conductors, leaders and storm drains. Section 1106 is hereby deleted
and replaced with the following:
SECTION 1106
SIZE OF CONDUCTORS,LEADERS
AND STORM DRAINS
1106.1 General. The size of the vertical conductors and leaders, building storm
drains, building storm sewers, and any horizontal branches of such drains or sewers
in Lubbock,Texas,shall be based on a minimum 100-year hourly rainfall rate of 3.3
inches (84 mm)per hour.
1106.2 Vertical conductors and leaders. Vertical conductors and leaders shall be
sized for the maximum projected roof area, in accordance with Table L1106.2(1)
and Table Ll 106.2(2).
TABLE L1106.2(1)
SIZE OF CIRCULAR VERTICAL CONDUCTORS AND
LEADERS
DIAMETER HORIZONTALLY PROJECTED ROOF AREA
OF (square feet
LEADER Rainfall Rate inches per hour
(inches)' 3 3.3 4
2 960 888 720
3 2,930 2,711 2,200
4 6,130 5,671 4,600
5 11,530 10,666 8,650
6 17,995 1 16,647 13,500
8 38,660 1 35,762 1 29,000
a. Sizes indicated are the diameter of circular piping. This table is applicable to piping of other shapes,
provided the cross-sectional shape fully encloses a circle of the diameter indicated in this table.For rectangular
leaders,see Table Ll 106.2(2). Interpolation is permitted for pipe saes that fall between those listed in this
table.
b The Rate of Rainfall for Lubbock,Texas,is 3.3 inches per hour,as shown in Appendix B of the 2015
International Plumbing Code,
TABLE L1106.2(2)
SIZE OF RECTANGULAR VERTICAL CONDUCTORS AND
LEADERS
HORIZONTALLY PROJECTED ROOF
DIMENSIONS OF AREA
COMMON LEADER (square feet
SIZES Rainfall Rate
width x length (inches) e.a inches per hour
3 3.3 4
13/4 X 2 1/2 1,130 1,046 850
2 x 3 1,840 1,702 1,380
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2 3/4 X 4 114 4,270 3,949 3,200
3 x 4 4,400 4,070 3,300
3 1/2 X 4 5,300 4,901 3,970
3 1/2 X 5 7,100 6,566 5,320
3 114 X 4 34 7,320 6,771 5,490
3 3/4 X 5 114 8,500 7,864 6,380
3 1/2 X 6 9,260 8,564 6,940
4 x 6 10,990 10,165 8,240
5 1/2 X 5 1'2 14,760 13,653 1 11,070
7 112 X 7112 33,500 30,986 1 25,120
a. Sizes indicated are nominal width x length of the opening for rectangular piping
b.For shapes not included in this table,Equation 11-1 shall be used to determine the equivalent
circular diameter,D,,of rectangular piping for use in interpolation using the data from Table
L1106.2(1)
De(width x length) (Equation 11-1)
where.
D.^equivalent circular diameter;D,,width,and length are in inches.
c. The Rate of Rainfall for Lubbock,Texas,is 3.3 inches per hour,as shown in Appendix B of the
2015 International Plumbing Code
1106.3_Building storm drains and sewers. The size of the building storm drain,
building storm sewer and their horizontal branches having a slope of one-half unit
or less vertical in 12 units horizontal (4-percent slope) shall be based on the
maximum projected roof area in accordance with Table Ll 106.3. The slope of
horizontal branches shall be not less than one-eighth unit vertical in 12 units
horizontal(l-percent slope) unless otherwise approved.
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TABLE L1106.3
SIZE OF HORIZONTAL STORM DRAINAGE PIPING
SIZE OF HORIZONTALLY PROJECTED ROOF AREA
HORIZONTAL (square feet
PIPING Rainfall Rate inches per hour
(inches) 3 1 3.3 1 4
118 unit vertical in 12 units horizontal 1 percent slope)
3 1,096 1,014 822
4 2,506 2,294 1,800
5 4,453 4,119 3,340
6 7,133 6,598 5,350
8 15,330 14,181 11,500
10 27,600 25,530 20,700
12 44,400 41,070 33,300
15 72,800 68,810 59,500
114 unit vertical in 12 units horizontal 2 percent slope)
3 1,546 1,430 1,160
4 3,533 3,268 2,650
5 6,293 5,821 4,720
6 10,066 9,311 7,550
8 21,733 20,103 16,300
10 38,950 36,025 29,200
12 62,600 57,920 47,000
15 112,000 103,600 84,000
112 unit vertical in 12 units horizontal 4 percent slope)
3 2,295 2,100 1,644
4 5,010 4,635 3,760
5 8,900 8,234 6,.680
6 13,700 12,800 10,700
8 30,650 28,355 23,000
10 55,200 51,060 41,400
12 88,800 82,140 66,600
15 158,800 146,860 119,000
The Rate of Rainfall for Lubbock,Texas,is 3 3 inches per hour,as shown in Appendix S of the 2015 International
Plumbing Code.
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1106.4 Vertical walls.
In sizing roof drains and storm drainage piping, one-half of the area of any vertical
wall that diverts rainwater to the roof shall be added to the projected roof area for
inclusion in calculating the required size of vertical conductors, leaders and
horizontal storm drainage piping.
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1106.5 Parapet wall scupper location.
Parapet wall roof drainage scupper and overflow scupper location shall comply with
the requirements of Section 1503.4 of the International Building Code.
1106.6 Size of roof gutters. The size of semicircular gutters shall be based on the
maximum projected roof area in accordance with Table L1106.6.
TABLE L1106.6
SIZE OF SEMICIRCULAR ROOF GUTTERS
DIAMETER OF HORIZONTALLY PROJECTED ROOF AREA
GUTTERS (square feet
(inches) Rainfall Rate Inches per h
3 1 3.3our 4
1/16 unit vertical in 12 units horizontal 0.5 percent slope)
3 226 209 170
4 480 444 360
5 834 771 625
6 1,280 1,184 960
7 1,840 1,702 1,380
8 2,655 2,456 1,990
10 4,800 4,440 3,600
118 unit vertical in 12 units horizontal 1 percent slo e
3 320 296 240
4 681 630 510
5 1,172 1,084 880
6 1,815 1,679 1,360
7 2,600 2,405 1,950
8 3,740 3,458 2,800
10 6,800 6,290 5,100
1/4 unit vertical in 12 units horizontal 2 percent slope)
3 454 420 340
4 960 888 720
5 1,668 1,543 1,250
6 2,560 2,368 1,920
7 3,860 3,530 2,760
8 5,310 4,911 3,980
10 9,600 8,880 7,200
1/2 unit vertical in 12 units horizontal 4 percent slope)
3 640 592 480
4 1,360 1,258 1,020
5 2,360 2,183 1,770
6 3,695 3,418 2,770
7 5,200 4,810 3,900
8 7,460 6,902 5,600
10 13,330 12,331 10,000
The Rate of Rainfall for Lubbock,Texas,3s 3.3 inches per hour,as shown in Appendix B of the 2015 International
Plumbing Code.
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(x) Second (Emergency) Roof Drains. Section 1108 is hereby deleted and
replaced with the following:
SECTION 1108
SECONDARY(EMERGENCY) ROOF DRAINS
1108.1 Secondary (emergency overflow)drains or scuppers.
Where roof drains are required, secondary (emergency overflow) roof drains or
scuppers shall be provided where the roof perimeter construction extends above the
roof in such a manner that water will be entrapped if the primary drains allow
buildup for any reason.
1108.2 Separate systems required.
Secondary roof drain systems shall have the end point of discharge separate from
the primary system. Discharge shall be above grade, in a location that would
normally be observed by the building occupants or maintenance personnel.
1108.3 Sizing of secondary drains. Secondary(emergency)roof drain systems shall
be sized in accordance with Section 1106 based on the rainfall rate for which the
primary system is sized in Tables L 1106.2(1), L 1106.2(2), L 1106.3 and L 1106.6.
Scuppers shall be sized to prevent the depth of ponding water from exceeding that
for which the roof was designed as determined by Section 1101.7. Scuppers shall
be sized in accordance with Tables L1108.3(1)and L1108.3(2) so that the rain load
on the roof does not exceed 20 psf. Notify the structural engineer when the roof and
wall areas contributing to the scuppers exceed the values shown in Table L1108.3(2)
so that the structure can be designed for increased rain load. Scuppers shall have
an opening dimension of not less than 4 inches (102 mm). The flow through the
primary system shall not be considered when sizing the secondary roof drain system.
TABLE L1108.3(1)
SIZE OF SCUPPERS
Head, Length of Scupper, L inches
H 4" 1 5" 1 6" 1 8" 10" 1 1295 1 18" 1 24" 1 30" 36„ 1 48"
(inches) CAPACITY OF SCUPPER, allons per minute
1" 11.4 14.4 1 17.4 123A 29.4 135.4 1 53.3 1 71.3 1 89.3 107.3 143.2
1.846" 27.3 34.8 42.3 157.3 72.4 187.4 1 132.5 1 177.6 1222.7 267.7 357.9
2" 30.5 39.0 47.5 164.4 81.4 198.3 1 149.1 1200.0 1250.8 301.7 403.4
Note:The Table is based on the Francis weir formula
Q=3,33 x (L-0.2xH) x H`s
Where:
Q=Flow Rate(cubic feet per second)
L-Length of Scupper Opening(feet)
H Head on Scupper(feet.measured 6 feet back from opening)
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TABLE L1108.3(2)
MAXIMUM CONTRIBUTING AREAS FOR PARAPET WALL SCUPPERS
For This Table: d,=2",I=3.3 in./hr.—,—and Rain Load. R'=20 Psf
Width of Scupper,L(inches) Maximum Contributing Roof and Wall
Areas A Asquare feet
4" 796
5" 1015
6" 1234
7" 1453
8" 1673
1a" 2111
_ 12" 2549
16" 3426
24" 5179
A=Maximum allowable horizontally-projected roof areas plus one-half of the vertical wall areas contributing to the
roof drainage area so that the maximum rain load on the roof,R,does not exceed 20 psf.
d,=Depth of rainwater from the primary roof drain up to the bottom of the scupper inlet(also referred to as static
head),inches.For this Table:d,=2'%
H—Maximum depth of additional rainwater above the bottom of the scupper inlet(also referred to as Hydraulic
Head),inches.For this Table:H=1.846"maximum.
(H=20 psf/5.2 psf/in.of thickness—d,ft 3.846"-2" 1.846")
i=The rate of rainfall for Lubbock,Texas is 3 3 inches per hour,as shown in Appendix B of the 2rt15 IPt' 'rhe rate
of rainfall is based on a storm of one hour duration and a 100 year return period.
I Q=3.33x(L 0.2xH)xHl5 A=Qri
Q—Flow rate through the scupper,gallons per minute(gpm)
Note:the minimum scupper height shall be 4" Scupper heights greater than 4"do not change the values in the table.
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(y) Combined SanijM and Storm Public Sewer. Section 1109 is hereby deleted in its
entirety.
(z) Medical gas certification. Section 1202 is hereby amended by adding a new
section 1202.2, as follows:
1202.2 Certification required. A medical gas certification must be furnished to the
building inspection department before a final inspection will be approved.
Secs. 28.10.005-28.10.050 Reserved
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Division 2. Protection of Water Supply
Sec. 28.10.051 Definitions
For the purposes of section 28.10.052, section 28.10.053 and section 28.10.054 of the
Code of Ordinances of the City of Lubbock, and section 312.9 and section 608 of the
2015 International Plumbing Code, sections P2503.7 and P2902 of the 2015
International Residential Code, and the USC Manual of Cross-Connection Control,
American Water Works Association M14 Manual, the following definitions shall
apply. In the event of a conflict between the definitions set forth below and the
definitions provided in the 2015 International Plumbing, 2015 International
Residential Codes, the USC Manual of Cross-Connection Control, American Water
Works Association M14 Manual, for the purposes of sections 28.10.052, 28.10.053
and 28.10.054 of the Code of Ordinances of the city, the definitions set forth below
shall control.
(1) Ai " shall mean the unobstructed vertical distance through the free
atmosphere between the lowest opening from any pipe or faucet conveying
water to a tank, fixture,receptor, sink, or other assembly and the flood level rim
of the receptacle. The vertical, physical separation must be at least twice the
diameter of the water supply outlet,but never less than 1.0 inch. An air gap may
also be a horizontal space between two pipes at no less than 6.0 inches.
(2) Approved shall mean accepted by the authority responsible as meeting an
applicable specification stated or cited in sections 28.10.051,28.10.053 through
28.10.054 or as suitable for the proposed use.
(3) Auxiliary waters shall mean any water supply on or available to the
premises other than the purveyor's approved public water supply that presents a
potential contamination hazard of the public water system. These auxiliary
waters may include water from another purveyor's public water supply or any
natural source(s) such as a well, spring, river or stream or used waters, or
industrial fluids. These waters may be contaminated or polluted or they may be
objectionable and constitute an unacceptable water source over which the water
purveyor does not have sanitary control.
(4) Bac ow shall mean the undesirable reversal of flow in a public water
distribution system as a result of a cross connection.
(5) B_acly7ow prevention assemblx shall mean an approved assembly to
counteract backpressure or prevent backsiphonage.
(6) Bac ow prevention assembly test and maintenance Mo shall mean the
reportort required for each backflow prevention assembly upon initial installation
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and periodically thereafter as required, giving evidence that the backflow
prevention assembly has been properly selected based on the degree of hazard,
and has been properly installed and tested in accordance with applicable
standards, and showing the results of this test. The completed form will be
forwarded to the water purveyor for documentation and annual record keeping.
(7) Backflow prevention assembly tester, backflow tester, or general tester
shall mean a backflow assembly device tester who is qualified to test backflow
prevention assemblies on any domestic, commercial, industrial or irrigation
service (excepting firelines). This person must be licensed by TCEQ and
registered with the city.
(8) Backpressure shall mean pressure created by any means in the water
distribution system,which by being in excess of the pressure in the water supply
mains causes a potential backflow condition.
(9) Backsiphonage shall mean the backflow of potentially contaminated water
into the potable water system as a result of the pressure in the potable water
system falling below atmospheric pressure of the plumbing fixtures,pools,tanks
or vats connected to the potable water distribution piping.
(10) Building o, ficial shall mean the officer charged with the enforcement of
the building,plumbing,mechanical,electrical,fuel gas,and energy conservation
codes of the city, or his duly authorized representative. For purposes of sections
28.10.051, 28.10.053 through 28.10.054, all state-licensed plumbing inspectors
under the supervision of the building official are his duly authorized
representatives.
(11) Bypass arrangements shall mean any jumper connections, removable
section, unions, swivels or change-over devices and other temporary or
permanent devices through which or because of which backflow can occur.
(12) Contamination shall mean an impairment of the quality of the potable
water that creates an actual hazard to the public health through poisoning or
through the spread of disease by sewage, industrial fluids or waste.
(13) Cross connection shall mean a physical connection or bypass
arrangement between a public water system and either another supply of
unknown or questionable quality, or another source that may contain
contaminating or polluting substances, any source of water treated to a lesser
degree in the treatment process, or any steam, gas or chemical system.
(14) Cross-connection control device shall mean any nationally approved or
recognized device placed upon any connection, physical or otherwise, between
a potable water supply system and any plumbing fixture or any tank,receptacle,
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equipment or device, which is designed to prevent nonpotable, used, unclean,
polluted and contaminated water,or other substance,from entering into any part
of such potable water system under any condition or set of conditions.
(15) Cross connections-controlled shall mean a connection between a public
water system and a nonpublic water system with an approved backflow
prevention assembly properly installed and maintained so that it will
continuously afford the protection commensurate with the degree of hazard.
(16) Cross-connection control b containment ontainment shall mean the installation of
an approved backflow prevention assembly at the water service connection to
any customer's premises, where it is physically or economically unfeasible to
find and permanently eliminate or control all cross connections or potential
contamination hazards, within the customer's water system; or it shall mean the
installation of an approved backflow prevention assembly on the service line
leading to and supplying a portion of a customer's water system where there are
cross connections or potential contamination hazards, that cannot be effectively
eliminated or controlled at the point of the cross connection.
(17) Customerproperty owner shall mean the owner, as determined by the
real property records of Lubbock County, Texas, or the agent of the owner in
responsible charge of the subject premises. For purposes of sections 28.10.051,
28.10.053 through 28.10.054, a licensed plumber and/or irrigator shall be
a deemed to be an agent of the owner when performing work under the scope of
sections 28.10.051, 28.10.053 through 28.10.054 pursuant to a plumbing and/or
irrigation permit.
{1$} Customer service inspection shall mean an inspection designed to detect
any actual or potential point of contamination of the potable water system and/or
cross-connection hazards.
{19} Dg&ee of hazard shall mean the nonhealth hazard or health hazard
classification that shall be attached to all actual or potential cross connections.
(A) Nonhealth hazard shall mean a cross connection or potential cross
connection involving any substance that generally would not be a health
hazard but would constitute a nuisance or be aesthetically objectionable,
if introduced into a public water supply.
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(B) Health hazard shall mean the classification assigned to a cross
connection or potential contamination hazard or other situation involving
any substance that can cause illness, death, spread of disease or has a
high probability of causing such effects if introduced into the potable
drinking water supply.
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(20) Double check valve backflow assembly(DCVA). double check assembly,
and double check(DCS shall mean an assembly consisting of two independently
acting, approved check valves, including tightly closing resilient seated shutoff
valves attached at each end of the assembly and fitted properly located resilient
seated test cocks.This assembly shall only be used to protect against a nonhealth
hazard.
(21) Fireline tester shall mean a tester who is qualified to test backflow
prevention assemblies on firelines. This person must be licensed by TCEQ and
registered with the city.
(22) Licensed professional shall mean any individual, or their representative,
that must maintain a license obtained through a professional licensing board in
order to conduct their business under state law.
(23) NoWotable water shall mean water not safe for drinking, personal or
culinary utilization.
(24) Pollution shall mean an impairment of the quality of the potable water to
a degree that does not create a hazard to the public health but that does adversely
and unreasonably affect the aesthetic qualities of such potable water for
domestic use.
(25) Point of use isolation shall mean the appropriate backflow prevention
within the consumer's water system at the point at which the actual or potential
cross connection exists.
(26) Potable water shall mean water free from impurities present in amounts
sufficient to cause disease or harmful physiological effects and conforming to
the bacteriological and chemical quality requirements of the Public Health
Service Drinking Water Standards or the regulations of any public health
authority having jurisdiction over such matters.
(27) Potential contamination hazard shall mean a condition which, by its
location, piping or configuration, has a reasonable probability of being used
incorrectly, through carelessness, ignorance, or negligence,to create or cause to
be created a backflow condition by which contamination can be introduced into
the public water supply. Examples of potential contamination hazards are:
(A) Bypass arrangements;
(B) Jumper connections;
(C) Removable sections or spools; and
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(D) Swivel or changeover assemblies.
(28) Public Health Service Drinking Water Standards shall mean the
standards set forth in 30 TAC 290 subchapter F, as may be amended from time
to time.
(29) Reduced pressure principle backflow prevention assembly (RPBA),
reduced pressure principle assembles,RPZ or RP assemblx shall mean a
backflow prevention device consisting of two independently acting check
valves,internally force-loaded to a normally closed position and separated by an
intermediate chamber (or zone) in which there is an automatic relief means of
venting to the atmosphere,internally loaded to a normally open position between
two tightly closing shutoff valves and with a means for testing for tightness of
the checks and opening of the relief means.
(30) Repair of an irrigation system shall mean the reconstruction or renewal
of any part of an existing irrigation system, including without limitation,
installation of a backflow prevention device, adding additional irrigation zones,
reparation of a main irrigation line and valve replacement. For the purpose
hereof,the replacement of a control box or sprinkler head(s)shall not be deemed
to be a repair.
(31) Service connection shall mean the point of delivery where the water
purveyor loses control over the water.
(32) Used water shall mean any water supplied by a water purveyor from a
public water system to a consumer's water system after it has passed through the
point of delivery or service connection and is no longer under the sanitary
control of the water purveyor.
(33) Water purveyor shall mean the director in charge of the water department
of the city, who is vested with the authority and responsibility for the
implementation of an effective cross-connection control program and for the
enforcement of the provisions of sections 28.10.051, 28.10.053 through
g
28.10.054.
See. 28.10.052 Intent; conflicts
Section 28.10.052, section 28.10.053, and section 28.10.054 of the Code of
Ordinances of the city are intended to supplement the USC Manual of Cross-
Connection Control,American Water Works Association M14 Manual, section 312.9,
"Inspection and Testing of Backflow Prevention Assemblies,"and section 608,
"Protection of Potable Water Supply" of the 2015 International Plumbing Code, as
well as sections P2503.7 and P2902 of the 2015 International Residential Code, both
codes having been previously adopted as a part of the Code of Ordinances of the city.
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In the event of any conflict between the USC Manual of Cross-Connection Control,
American Water Works Association M 14 Manual, sections 312.9 or 608 of the 2015
International Plumbing Code or sections P2503.7 or P2902 of the 2015 International
Residential Code and section 28.10.052, section 28.10.053, and section 28.10.054 of
the Code of Ordinances of the city, the provisions of section 28.10.052, section
28.10.053, and section 28.10.054 of the Code of Ordinances of the city shall control.
Section 28.10.052, section 28.10.053, and section 28.10.054 of the Code of
Ordinances of the city shall be liberally construed to protect the public health and
safety of the citizens of the city.
Sec. 28.10.053 Responsibilities of water purveyor, user, customer/property
owner and backflow prevention assembly tester
(a) Responsibilities of water purveyor.
(1) (A) No water service connection to any premises shall be installed or
maintained by the water purveyor unless the water supply is protected as
required by state law, including without limitation, 30 TAC 290.44(h), 30 TAC
290.460), 30 TAC 290.47(i), 30 TAC 344.73 and 30 TAC 344.75, as same may
be amended from time to time. Service of water, subject to the provisions of
sections 28.10.052, 28.10.053, or 28.10.054 of the Code of Ordinances of the
City of Lubbock, or sections 312.9 or 608 of the 2015 International Plumbing
Code, or sections P2503.7 or P2902 of the 2015 International Residential Code,
as applicable, to any premises shall be discontinued by the water purveyor if a
backflow prevention assembly required by sections 28.10.051, 28.10.053
through 28.10.054 is not installed properly, tested and maintained, or if it is
found that a backflow prevention assembly has been removed, bypassed, or if
an unprotected cross connection exists on the premises. Service will not be
restored until such conditions or defects are corrected.
(B) For new facilities, permanent water service shall not be provided until all
testable backflow prevention assemblies have been tested and are operational.
Except in cases where the testing of backflow prevention assemblies must be
delayed until the installation of internal production or auxiliary equipment, the
city shall not approve any certificate of occupancy until all backflow prevention
assemblies have been tested and are operational.
(2) Customer service inspection.
(A) A customer service inspection for cross-connection control shall
be completed by the city water purveyor prior to providing continuous
water service in each of the following circumstances:
(i) Water service to a newly constructed facility, in which case
the customer service inspection shall be performed in
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conjunction with or near the same time as the plumbing final
inspection conducted by the building official.
(ii) Any correction, addition or improvement to the water
service or water distribution plumbing of any facility or premises,
except for minor repair and maintenance work exempted from
permitting by section 106.2 of the 2015 International Plumbing
Code,or in cases where an approved RPBA backflow prevention
device has been installed at the point of water service connection
such that premises' isolation is achieved, and said device has
been verified as having been properly tested and maintained as
provided herein. Where nonexempt plumbing work has been
performed upon the water service or water distribution plumbing
of any facility or premises, and approved premises isolation has
been provided as described herein, the building official shall be
solely responsible for ensuring compliance of any such work on
the customer side of the backflow device.
(B) A permanent water service shall not be established with regard to
a newly constructed facility until after the customer service inspection is
completed.
(C) Temporary water service, for construction or other purposes, that
is found to pose a potential cross-connection threat to the potable water
due to the unknown use of the water therefor,or other reasons or causes,
shall be protected by an approved backflow prevention assembly.
(3) If, in the judgment of the water purveyor or building official an approved
backflow prevention assembly is required at the customer's/property owner's
water service connection; or, within the customer's/property owner's private
water system for the safety of the public water system,the water purveyor or the
designated agent shall:
(A) Give notice in writing to the customer/property owner to install an
approved backflow prevention assembly(s) at specific location(s) at
his/her expense, and depending on the severity of the threat to the public
water supply, within the time frame required by the city and in all
instances within thirty(30)days.
(B) In the case of any premises where, in the opinion of the water
purveyor and/or building official,an imminent health threat is posed due
to cross connection or a potential contamination hazard, water service to
the facility may immediately be discontinued without prior written notice
to customer/property owner. Although the city will attempt to provide
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notice as is reasonably practical, no notice shall be required prior to
discontinuance.
(4) Failure, refusal or inability on the part of the customer/property owner to
install, have tested and maintain the backflow prevention assembly(s) shall be
grounds for discontinuing water service to the premises until such requirements
have been met as required by sections 28.10.051, 28.10.053 through 28.10.054.
(5) Any reduction in water pressure caused by the installation of backflow
prevention assembly devices shall not be the responsibility of the city.
(b) Responsibilities of the customer/property owner. The customer's/property
owner's system shall include those parts of the potable water conveyance facilities
beyond the termination of the utility distribution system that are conveying potable
water to the points of use of customer/property owner.
(1) Backflow prevention assemblies shall be installed within the
customer's/property owner's system at the customer's/property owner's
expense at any time required by sections 28.10.052, 28.10.053, or 28.10.054 of
the Code of Ordinances of the city and/or sections 312.9 or 608 of the 2015
International Plumbing Code, or sections P2503.7 or P2902 of the 2015
International Residential Code, or the USC Manual of Cross-Connection
Control, American Water Works Association M14 Manual, as applicable. All
backflow prevention devices must be installed and tested as required by:
(A) Section 28.10.052,section 28.10.053,and section 28.10.054 of the
Code of Ordinances of the city;
(B) Section 312.9 and section 608 of the 2015 International Plumbing
Code; and
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p (C) 30 TAC 290.44(h), 30 TAC 290.460) and 30 TAC 290.47(i).
(2) It shall be the responsibility of the customer/property owner to verify that
all applicable city plumbing and/or irrigation permits are obtained and that the
customer/property owner, or licensed plumber or irrigator, as applicable, is in
compliance with all of the provisions of those permits. In addition to the
remedies provided herein, in the event the backflow prevention assembly is
installed by a licensed professional, failure by such licensed professional to
follow the provisions of such permit will result in written notice to the applicable
state licensing agency, in addition to being a violation of sections 28.10.051,
28.10.053 through 28.10.054.
(3) It shall be the responsibility of the customer/property owner and backflow
prevention assembly tester performing the subject test(s) to send to the city the
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backflow prevention assembly test and maintenance records. These materials
shall be delivered to the water purveyor office of the city within ten(10)days of
installation of the backflow prevention assembly.
(4) The customer's/property owner's system shall be open for inspection at
all reasonable times to authorized representatives of the city to determine
whether cross connections or potential contamination hazards, including
violations of sections 28.10.052, 28.10.053, or 28.10.054 of the Code of
Ordinances of the city and/or sections 312.9 or 608 of the 2015 International
Plumbing Code, or sections P2503.7 or P2902 of the 2015 International
Residential Code, as applicable, exist.
(5) If the customer or premises wherein potable water from the city is supplied
or provided has access to an auxiliary water supply that is treated to a lesser
degree than the public water supply or if the water quality is unknown, and
which is either cross connected or poses a potential contamination hazard to the
public water system,the public water system shall be protected against backflow
or backsiphonage by an approved backflow prevention device or a horizontal air
gap (physical separation) as defined in section 28.10.051(1). The described
threat shall be deemed a health hazard when determining the type of approved
backflow required. If the auxiliary water supply is used for irrigation purposes,
the backflow assembly shall be subject to the requirements of state laws,as same
may be amended from time to time.
(A) In order for a customer to install an auxiliary water supply on
property located within City of Lubbock's incorporated limits, the
auxiliary water supply must be registered with the city. The registration
shall be approved if the auxiliary water supply meets all federal, state,
and local requirements.
(B) If the customer does not install a backflow prevention device, the
following requirements must be met:
(i) The customer shall permit the city to perform a customer
service inspection to determine whether a horizontal air gap
exists between the two systems and no other potential
contamination hazards exist.
(ii) If a potential contamination hazard exists, the customer
shall install an approved backflow prevention device to protect
the public water system.
(iii) If a potential contamination hazard is not documented
during the customer service inspection, no backflow prevention
device shall be required. However, the city shall require the
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customer,at the customer's expense,to obtain a customer service
inspection at a minimum of at least every three years to confirm
that the two separate systems have not been cross-connected and
other potential contamination hazards have not been created.
(C) Any customer who creates a cross-connection and does not
comply with the backflow protection ordinances in subsection (5) shall
be subject to receiving a citation and their city water service being
discontinued until a backflow protection device has been installed at the
premises.
(6) In the event industrial fluids,any material dangerous to health or any other
objectionable substances are handled in such a fashion as to create potential
contamination hazard to the public water system,such condition shall be deemed
a health hazard. The public water system shall be protected against backflow
from the premises by installing an air gap,a reduced pressure principle backflow
assembly, or such other backflow assembly device as may be required by 30
TAC 290.47(i), as same may be amended from time to time. See attachment
"A," to Ordinance 2007-00056 incorporated herein and made a part hereof for
all purposes.
(7) All new installations of or substantial alterations to fire suppression
systems that utilize the city's public water supply shall have installed a U.L.
approved backflow prevention device according to the degree of hazard that
exists. For purposes of this section, a "substantial alteration" is deemed to be
any alteration or expansion of the system that would trigger a requirement for
review and approval by the authority having jurisdiction,normally being the city
fire marshal. All fireline backflow prevention assemblies must be installed
inside the building as determined by section 28.10.053 of the Code of
Ordinances of the city. Upon the approved installation of the backflow
prevention assembly, a cross-connection test report completed by a licensed
fireline tester must be provided to the city as required by subsection (b)(3),
above.
(8) Subject to the conditions of this subsection (b)(8), a reduced pressure
assembly shall be the minimum protection for fire hydrant water meters which
are being used for a temporary water supply during construction or other uses
which may pose a potential contamination hazard to the public water supply.
Only city fire hydrant water meters with approved backflow prevention
assemblies are allowed to be used within the city limits. Failure to comply with
this subsection (b)(8) will result in the fire hydrant meter being removed from
the premises by the water purveyor.
(9) It shall be the duty of the customer/property owner at any premises where
backflow prevention assemblies are installed to have certified inspections and
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operational tests made upon installation and at least once every three years in
nonhealth hazard conditions.In those instances where the water purveyor and/or
building official of the city deems the potential backflow to be a health hazard
or a potential health hazard,certified inspections shall be required annually or at
more frequent intervals as deemed necessary by the water purveyor. All
inspections and tests of backflow prevention assemblies shall be at the expense
of the customer/property owner and shall be performed by a backflow tester who
is licensed with the Texas Commission on Environmental Quality and registered
with the water purveyor and meeting all conditions and criteria of section
28.10.052, section 28.10.053, and section 28.10.054 of the Code of Ordinances
of the city.
(10) It shall be the responsibility of the customer/property owner that all
irrigation systems installed after the effective date hereof and for an existing
system in the event of a repair, shall have installed an approved backflow
prevention assembly other than an atmospheric vacuum breaker (AVB), in the
event an existing irrigation system is repaired.
(11) It shall be the responsibility of the customer/property owner to have the
backflow prevention assembly device tested as described in sections 28.10.051,
28.10.053 through 28.10.054. The backflow prevention assembly shall be
repaired,overhauled, or replaced at the expense of the customer..'property owner
whenever said assemblies are found to be defective. Water service shall not be
restored until repairs are complete.
(c) Responsibilities of the backflow12revention assembly tester. In addition to
requirements of the backflow prevention assembly tester set forth in other parts of this
division,the backflow prevention assembly tester shall also comply with the following:
(1) The backflow prevention assembly tester shall perform competent tests,
issuing complete, accurate and legible reports of backflow prevention
assemblies tested, and filing backflow prevention assembly test and
maintenance reports as prescribed by division. Test reports shall be submitted to
the water purveyor office of the city, within (10) ten days of the testing by the
backflow prevention assembly tester of the installation, replacement, or repair
of the backflow assembly.
(2) Prior to performing any testing of backflow prevention assemblies within
the city, a licensed backflow prevention assembly tester must be registered
annually with the city in accordance with this section.
(A) Eligibility for registration shall be conditioned upon applicant
providing proof to the city that they are currently licensed as a backflow
prevention assembly tester by the Texas Commission on Environmental
Quality.
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(B) Each applicant for registration shall furnish evidence to the city to
show that he/she has available the necessary tools and equipment to
properly test and certify such assemblies. Serial numbers of all test
gauges shall be registered with the city annually and shall be listed on
tests and maintenance reports prior to being submitted to the city. Each
recorded test kit shall be tested annually for accuracy and calibrated to
maintain a two-percent accuracy factor.
(3) In the event the city has reason to believe that testing or reporting
deficiencies exist in a backflow prevention assembly tester's methods or report,
the city shall notify the tester and customer/property owner, and shall take one
or more of the following actions:
(A) Require the subject customeriproperty owner to have retested any
backflow prevention assembly previously reported as operational;
(B) In the event the backflow prevention assembly tester has
committed three(3)or more inadvertent testing or reporting inaccuracies
within a twelve-month period commencing with the first inaccuracy, the
backflow prevention assembly tester's registration with the city may be
suspended for a period of six (6) months;
(C) In the event the backflow prevention assembly tester shall file with
the city an intentional or knowing falsified test report, the backflow
prevention assembly tester's registration with the city shall be revoked
by the city.
Sec. 28.10.054 Approved backflow prevention device assembly and installation
(a) Any backflow prevention assembly required by sections 28.10.052, 28.10.053, or
28.10.054 of the Code of Ordinances of the city, or section 312.9 or 608 of the 2015
International Plumbing Code, or sections P2503.7 or P2902 of the 2015 International
Residential Code, or the USC Manual of Cross-Connection Control, American Water
Works Association M14 Manual, as applicable, shall be of a model and size approved
by the water purveyor/building official or as approved by 30 TAC 290.47(i), as same
may be amended from time to time. Backflow prevention devices must be approved by
the city prior to installation. A plumbing permit is required in accordance with section
28.05.001 of this chapter. The city shall determine the type and location of the backflow
prevention assembly to be installed within the area served by the public water system.
(b) The term "approved backflow prevention assembly" shall mean a backflow
prevention assembly that has been manufactured and installed in full conformance with
the standards specified within the 2015 International Plumbing Code and those
established by the American Water Works Association(AWWA) and the USC Manual
of Cross-Connection Control,American Water Works Association M14 Manual,titled:
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AWWA C510 Standard for Double Check Valve Backflow-Prevention
Assembly, and AWWA C511 Standard for Reduced-Pressure Backflow-
Prevention Assembly,and have met completely the laboratory field performance
specifications of the Foundation for Cross-Connection Control and Hydraulic
Research (FCCHR) and the University of Southern California (USC),
"Specification of Backflow-Prevention Assemblies" - Sec. 10 of the most
current issue of the Manual of Cross-Connection Control.
(c) Backflow prevention assemblies shall be installed in a manner designed to
facilitate ease of testing and inspection by the city or any certified general tester. All
backflow prevention assemblies shall be tested upon installation,relocation,or repair of
same.
(d) Backflow prevention assemblies, in addition to other requirements set forth in
sections 28.10.052, 28.10.053, or 28.10.054 of the Code of Ordinances of the city, or
section 312.9 or 608 of the 2015 International Plumbing Code, sections P2503.7 or
P2902 of the 2015 International Residential Code, or the USC Manual of Cross-
Connection Control, American Water Works Association M14 Manual, shall be
installed in accordance with subsections(1)through(9)below. The clearance standards
set forth in subsections (1)through(9), below, shall apply to all assemblies installed in
enclosures and meter boxes.
(1) Backflow prevention assemblies that are larger than four inches and
installed more than five feet above floor level must have a suitable platform for
use by testing or maintenance personnel.
(2) All backflow prevention assemblies installed eight feet or higher above
floor level must have installed a suitable permanent ladder for use by testing or
maintenance personnel.
(3) All backflow prevention assembly enclosures shall be designed for ready
access and sized to allow for the minimum clearance as established in this article.
Removable protective enclosures may be installed on smaller assemblies.
(4) Reduced pressure zone assemblies two inches and smaller shall have at
least a six-inch clearance on both ends and on top of the assembly. Additionally,
there shall be twelve inches of clearance below the relief valve and twelve inches
of clearance on the test cock side of the assembly. All assemblies larger than two
inches shall have a minimum of twelve inches of clearance on the back side,
twenty-four inches of clearance on the test cock side, and the relief valve
opening shall be at least twelve inches plus nominal size of assembly above the
floor or highest possible water level.
(5) Double check valve assemblies larger than two inches may be installed
above finished grade in a freeze-proof enclosure or below grade in a vault. If
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assembly is installed below grade,the test cocks must be plugged with corrosion
resistant watertight plugs, and shall be no less than twelve inches below grade
with a minimum of twelve inches clearance below the backflow assembly
device. There shall be at least a six-inch clearance on both ends of the assembly
with a minimum clearance of twelve inches on the back side and twenty-four
inches on the test cock side. The top of the vault shall be two inches above
ground level.Double check valve assemblies shall be installed so that the checks
are horizontal.
(b) Double check valve assemblies two inches and smaller may be installed
above finished grade in a freeze-proof enclosure or below grade in a box. If
assembly is installed below grade,the test cocks must be plugged with corrosion
resistant watertight plugs, and shall be no less than twelve inches below grade
with a minimum of twelve inches clearance below the backflow assembly
device. There shall be at least a six-inch clearance on both ends of the assembly
with a minimum clearance of twelve inches on the back side and twelve inches
on the test cock side. The top of the box shall be two inches above ground level.
Double check valve assemblies shall be installed so that the checks are
horizontal.
k (7) Bypass arrangements are prohibited. Pipe fittings which could reasonably
be calculated to constitute a means by which a backflow assembly could be
bypassed and defeated shall not be installed.
(8) All facilities that require continuous, uninterrupted water service and are
required to have a backflow assembly must make provision for the parallel
installation of assemblies of the same type so that testing, repair and
maintenance can be performed.
(9) All health hazard facilities shall have containment from the city's potable
water system. For the purposes of this subsection, "containment" shall mean
protection of the public water supply at the service connection.
See. 28.10.055 Appeals
The mechanism for appeal from the provisions of this division, or from a decision of
an administrative official enforcing same, shall be through the building board of
appeals of the city in the same manner as set forth in section 2.03.501 of this code. It is
further provided that said board shall have no authority to waive, set aside or alter any
provision of this division otherwise mandated by the laws of the state.
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Sec. 28.10.056 Violations
Violation of any provision of this division shall be deemed a misdemeanor punishable
as provided in section 1.01.004 of the Code of Ordinances of the city. Additionally, a
violation of any provision of this division shall be deemed to be a nuisance as defined
under section 34.02.031 of the Code of Ordinances of the city. Notwithstanding the
above, in the event a violation results in an imminent risk to human health, safety or
welfare,the city may immediately discontinue water service to the subject facility
without notice. Notwithstanding the right to immediately discontinue water service
without notice, as described herein,the city will attempt to provide notice as is
reasonably practical under the circumstances presented. The city will provide
customer with necessary information to properly reinstate service.
SECTION 2. THAT should any paragraph, sentence, clause, phrase or word of this
Ordinance be declared unconstitutional or invalid for any reason, the remainder of this
Ordinance shall not be affected thereby.
SECTION 3. THAT the City Secretary of the City of Lubbock, Texas, is hereby
authorized and directed to cause publication of the descriptive caption of this Ordinance as an
alternative means of publication provided by law.
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AND IT IS SO ORDERED.
Passed by the City Council on first reading this j&hday of January , 2020.
Passed by the City Council on second reading this l Ithday of__. February , 2020.
DAN POPE, MAYOR
ATTEST:
Retca Garza, City Se ret
,4
APPROVED AS TO CONTENT:
Greg Zielinski, Chief Building Official
APPROVED AS TO FORM:
Du Ci ttorney
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