HomeMy WebLinkAboutOrdinance - 2016-O0073 - Adopting The 2012 International Plumbing Code - 05/12/2016First Reading
April 28, 2016
Item No. 7.15
ORDINANCE NO. 2016-00073
Second Reading
May 12, 2016
Item No. 6.10
AN ORDINANCE AMENDING CHAPTER 28 OF THE CODE OF
ORDINANCES OF THE CITY OF LUBBOCK, TEXAS WITH REGARD TO
ADOPTION OF THE 2012 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 2012
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 2012 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 2012 Edition of
the International Plumbing Code. One copy of the 2012 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 2009 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
Page 1 of 29
through 28.10.056 and articles 28.01 through 28.08 of this 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*
New Construction:
$0.05 per sq. ft. of gross floor area under
roof, $30.00 minimum. (Where more than
one inspection is required, an additional
fee of $15.00 shall be assessed for each
additional inspection)
Additions to floor area
As for new construction
Alterations & remodeling
$2.00 per $1,000.00 valuation, $30.00
(no change in building area):
minimum (Where more than one
inspection is required, an additional fee of
$15.00 shall be assessed for each
additional inspection) (See Note 3)
Total re -plumb:
As for new construction
Miscellaneous permits for new
$30.00 (Where more than one inspection
installations, replacement and repair of:
is required, an additional fee of $15.00
Water heaters, water lines, sewer lines,
shall be assessed for each additional
gas lines, water softeners, irrigation
inspection) Service line tap fees, or
systems, fixed appliances, fixtures, etc.
adjustments in grade, where needed, may
requiring inspection approval:
involve extra fees. Contact the appropriate
utility department.
Permit fees, work commencing prior to
permit approval:
As for building permit fees (see article
Renewal of expired or involuntarily
terminated permits:
28.05), except that permit fee calculations
shall be based on this section.
Permit transfer fee:
Re -inspection fees:
*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.
Page 2 of 29
(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
Sec. 28.10.004 Technical amendments
(a) Protection against physical damage. Section 305.8 is hereby amended to read as
follows:
Section 305.8 Protection against p_hysical 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:
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.
Page 3 of 29
2012
Refer to
International
Lubbock Code of
Plumbing CodeOrdinances
Section Heading/Subject
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
Sec. 28.10.004 Technical amendments
(a) Protection against physical damage. Section 305.8 is hereby amended to read as
follows:
Section 305.8 Protection against p_hysical 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:
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.
Page 3 of 29
(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 5 -foot head of water
and maintaining such pressure for 15 minutes.
(e) 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.
(f) 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.
(g) Water hammer. Section 604.9 is hereby amended to read as follows:
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 AS SE 1010.
Page 4 of 29
(h) Solvent cementing. Section 605.22.2 is hereby amended to read as follows:
605.22.2 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-B137.3 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.
(i) 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:
On the building water service pipe from the public water supply.
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.
0) 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.
Page 5 of 29
(k) Slope of horizontal drainage pipe. Table 704.1 is hereby amended to read as
follows:
TABLE 704.1
SLOPE OF HORIZONTAL DRAINAGE PIPE
Size (inches)
Minimum slope (inch per foot)
2-1/2 or less
1/4
3 to 5
118
6 or larger
1/16
(1) Solvent cementing. Section 705.8.2 is hereby amended to read as follows:
705.8.2 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 primer is acceptable where joints are accessible.
Solvent cement not purple in color and conforming to ASTM D 2564 CSA
CAMESA-13137.3, CSA CAN/CSA-13181.2 or CSA CAN/CSA-BV 182.1
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.
(m) Solvent cementing. Section 705.14.2 is hereby amended to read as follows:
705.14.2 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 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 CAN.CSA-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.
(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.
Page 6 of 29
(o) Building drains and sewers. Table 710.1(1) is hereby amended to read as follows:
Table 710.1(1)
BUILDING DRAINS AND SEWERS
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
pipe (inches)
Slope per foot
1/ 16 inch
1/8 inch
1/4 inch
1/2 inch
1-1/4
1-1/2
-
-
3
3
2
-
-
21
26
2-1/2
24
31
3
36
42
50
4
-
180
216
250
5
390
480
575
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
For SI: 1 inch=25.4 mm, 1 inch per foot --0.8333 mm/m
a. The minimum size of any building drain serving a water closet shall be 3
inches.
(p) Roof extension. Section 904.1 is hereby amended to read as follows:
904.1 Roof Extension. All open vent pipes that extend through a roof shall be
terminated at least 10 inches above the roof, except that where a roof is to be
used for any purpose other than weather protection, the vent extensions shall
be run at least 7 feet above the roof.
Page 7 of 29
(q) 1001.1. Scope (Traps, Interceptors and Separators). Section 1001.1 is hereby
amended to read as follows:
1001.1 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.
(r) Storm drainage -general (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.
(s) 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.
(t) Combining storm with sanitary drainage. Section 1104.2 is hereby amended to
read as follows:
1104.2 Combining storm with sanitary drainage. The sanitary and storm
drainage systems of a structure shall be entirely separate.
i
(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 less than two times the area of the
conductor or leader to which the drain is connected.
Page 8 of 29
(w) General Size of Conductors Leaders and Storm Drains- Section 1106.1 is
hereby amended to read as follows:
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.
(x) Vertical conductors and leaders. Section 1106.2 is hereby amended to read as
follows:
1106.2 Vertical conductors and leaders. Vertical conductors and leaders shall
be sized for the maximum projected roof area, in accordance with Table
L 1106.2(1) and Table L 1106.2(2).
(y) Table L1106.2(l) Size of Vertical Conductors and Leaders. Table 1106.2(1) is
hereby deleted and replaced with Table L 1106.2(1) as follows:
TABLE L1106.2(1)
SIZE OF CIRCULAR VERTICAL CONDUCTORS AND LEADERS
DIAMETER OF
HORIZONTALLY PROJECTED ROOF AREA
LEADER
(square feet)
(inches)'
Rainfall Rate (inches per hour)
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
16,647
13,500
8
38,660
35,762
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 L1106.2(2). Interpolation is
permitted for pipe sizes 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 2012 International Plumbing Code.
Page 9 of 29
(z) Table L1106.2(2) Size of Rectangular Vertical Conductors and Leaders. Table
1106.2(2) is hereby deleted and replaced by Table L 1106.2(2) as follows:
TABLE L1106.2(2)
SIZE OF RECTANGULAR VERTICAL CONDUCTORS AND LEADERS
DIMENSIONS OF COMMON
LEADER SIZES
width x length (inches)' °
HORIZONTALLY PROJECTED ROOF AREA
(square feet)
Rainfall Rate (inches per hour)
3 3.3 4
13/4 x 2 `/2
1,130
1,046
850
2 x 3
1,840
1,702
1,380
2 3/4 x 4 `/,
4,270
3,949
3,200
3 x 4
4,400
4,070
3,300
3'/? x 4
5,300
4,901
3,970
3 '/2x 5
7,100
6,566
5,320
3 3/4 x 4 3/4
7,320
6,771
5,490
33/4x5'/4
8,500
7,864
6,380
3'/i x 6
9,260
8,564
6,940
4 x 6
10,990
10,165
8,240
5'/, x 5 `/z
14,760
13,653
11,070
7'/z x 7'/;
33,500
30,986
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 )1/2 (Equation 11-1)
where:
D, = equivalent circular diameter; De, 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 2012 International Plumbing Code
(aa) Building storm drains and sewers. Section 1106.3 is hereby amended to read as
follows:
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 L1106.3.
The slope of horizontal branches shall be not less than one-eighth unit vertical
in 12 units horizontal (1 -percent slope) unless otherwise approved.
Page 10 of 29
(bb) Table L 1106.3 Size of Horizontal Storm Drainage Piping. Table 1106.3 is hereby
replaced with Table L1106.3 as follows:
TABLE L1106.3
SIZE OF HORIZONTAL STORM DRAINAGE PIPING
SIZE OF
HORIZONTAL PIPING
(inches)
HORIZONTALLY PROJECTED ROOF AREA
(square feet)
Rainfall Rate (inches per hour)
3 1 3.3 1 4
1/6 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
'/q 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
!/Z unit vertical in 12 units horiztntal (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 8 of the 2012 International Plumbing Code.
(cc) Size of roof gutters. Section 1106.6 is hereby amended to read as follows:
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.
Page 11 of 29
(dd) Table L1106.6 Size of Semicircular Roof Gutters. Table 1106.6 is hereby deleted
and replaced with Table L1106.6 as follows:
TABLE L1106.6
SIZE OF SEMICIRCULAR ROOF GUTTERS
DIAMETER OF
GUTTERS
(inches)
HORIZONTALLY PROJECTED ROOFAREA
(square feet)
Rainfall Rate (Inches per hour)
3 1 3.3 1 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
1/8 unit vertical in 12 units horizontal (1 percent slope)
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
FOR SI: 1 inch = 25.4 mm, 1 square foot = 0.0929 m
The Rate of Rainfall for Lubbock, Texas, is 3.3 inches per hour, as
shown in Appendix B of the 2012 International Plumbing Code.
Page 12 of 29
(ee) Table Ll 107.3 (1) Size of Scuppers. A new Table Ll 107.3(l) is hereby added as
follows:
TABLE L1307.3(1)
SIZE OF SCUPPERS
Head,
Maximum Contributing Roof and Wall
Areas, A (square feet)
4"
796
Length of Scupper, L (inches)
1015
6"
1234
H
4"
S"
6"
8" 1 10" 1 12" 1 18" 1 24"
30"
36" 1
48"
inches
3426
24"
5179
CAPACITY OF SCUPPER, Q (gallons per minute)
1"
11.4
14.4
17,4
23.4 1 29.4 1 35.4 1 53.3 71.3
89.3
107.3
143.2
1.846"
27.3
34.8
42.3
S7.3 1 72.4 1 87.4 1 132.5 177.6
222.7
267.7
357.9
2"
30.5
39.0
47.5
64.4 1 81.4 1 98.3 1 149.1 200.0
250.8
301.7
403.4
Note: The Table is based on the Francis weir formula:
Q = 3.33x(L-0.2xH)xH"
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).
(ff) Table L1107.3(2) Maximum Contributing Areas For Parapet Wall Scuppers.
A new Table L1107.3(2) is hereby added as follows:
Table L1107.3(2)
MAXIMUM CONTRIBUTING AREAS FOR PARAPET WALL SCUPPERS
For This Table: ds = 2", i = 3.3 in./hr., and Rain Load, R = 20 psf
Width of Scupper, L (inches)
Maximum Contributing Roof and Wall
Areas, A (square feet)
4"
796
5"
1015
6"
1234
7"
1453
8"
1673
10"
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.
(3.846" of Water Weighs 20 psf, which is equal to the Roof Live Load)
ds = 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; da = 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 15.2 psf/in of thickness - ds = 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 2012 IPC. The Rate of Rainfall is based on a storm of
1 hour duration and a 100 year return period.
Q= 3.33x(L 0.2xH)xHl' A=Q/i
Q = Flow Rate Through the Scupper. gallons per minute
Note- The minimum Scupper Height shall be 4" Scupper heights greater than 4"
do not change the values In the Table.
Page 13 of 29
(gg) Sizing of secondary drains. Section 1108.3 is hereby amended to read as follows:
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 L1106.6. 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 L1107.3(1) and L1107.3(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 L1107.3(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.
(hh) Size of combined drains and sewers. Section 1109 is hereby deleted in its
entirety.
(ii) 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 will be
approved.
Page 14 of 29
Secs. 28.10.005-28.10.050 Reserved
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
2012 International Plumbing Code, sections P2503.7 and P2902 of the 2012 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 2012
International Plumbing, 2012 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) Air gap 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) improved 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 water supply 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 on- shall mean the undesirable reversal of flow in a public water
distribution system as a result of a cross connection.
(5) Backl7ow_ prevention assemble shall mean an approved assembly to counteract
backpressure or prevent backsiphonage.
Page 15 of 29
(6) Bac ow prevention assembly test and maintenance report shall mean the
report required for each backflow prevention assembly upon initial installation
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 of 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.
Page 16 of 29
(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, 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 by containment 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) Customer. property 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 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.
(18) 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) Degree 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.
Page 17 of 29
(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.
(20) Double check valve backflow assembly (DCVA), double check assembly, and
double check (DC) 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) Nonpotable Nater 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:
Page 18 of 29
(A) Bypass arrangements;
(B) Jumper connections;
(C) Removable sections or spools; and
(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 bac ow prevention assembly iRPBAJ, reduced
pressure principle assembly, RPZ or RP assembly 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.
(3 1) 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
28.10.054.
Page 19 of 29
Sec. 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 2012 International Plumbing Code, as well as sections P2503.7 and P2902
of the 2012 International Residential Code, both codes having been previously adopted as
a part of the Code of Ordinances of the city. In the event of any conflict between the USC
Manual of Cross -Connection Control, American Water Works Association M14 Manual,
sections 312.9 or 608 of the 2012 International Plumbing Code or sections P2503.7 or
P2902 of the 2012 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 purvey.
(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 2012 International Plumbing Code, or
sections P2503.7 or P2902 of the 2012 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
Page 20 of 29
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
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 2012 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:
Page 21 of 29
(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 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 2012 International Plumbing Code, or sections P2503.7 or
P2902 of the 2012 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 2012 International Plumbing
Code; and
(C) 30 TAC 290.44(h), 30 TAC 290.460) and 30 TAC 290.47(i).
Page 22 of 29
(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 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 2012
International Plumbing Code, or sections P2503.7 or P2902 of the 2012
International Residential Code, as applicable, exist.
(5) If the customer or premises wherein potable water from the city is supplied
or provided has 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.
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 30 TAC 344.75(c), as same may be amended from time to
time.
(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.
Page 23 of 29
(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 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.
Page 24 of 29
(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 backflow prevention 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.
(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 customer/property owner to have retested any
backflow prevention assembly previously reported as operational;
Page 25 of 29
(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
2012 International Plumbing Code, or sections P2503.7 or P2902 of the 2012
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 2012 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:
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.
Page 26 of 29
(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 2012 International Plumbing Code, sections
P2503.7 or P2902 of the 2012 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 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.
(6) 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
Page 27 of 29
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.
(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.
Sec. 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.
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.
Page 28 of 29
SECTION 2. THAT violation of any provision of this ordinance shall be deemed
a misdemeanor punishable as provided by Section 1.01.004 of the Code of Ordinances of
the City of Lubbock, Texas.
SECTION 3. 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 4. THAT pursuant to Section 214.218 of the Texas Local Government
Code, this Ordinance shall not be implemented or enforced until after the 30' day after
the date of final adoption.
SECTION 5. 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.
AND IT IS SO ORDERED.
Passed by the City Council on first reading this 28th day of April :2
Passed by the City Council on second reading this I2th day of May -2016
ATTEST:
Re ecca Garza, City Secre y
APPROVED AS TO CONTENT:
X
O'Neal, Chie B ding Official
APPROVED AS TO FORM:
rnyl s, Dety Ci y
f
/J1, j,0/
t/ O; 0.
Page 29 of 29