0934f'
OFFICIAL RECORC
2006 International Plumbing Code
ORDINANCE NO. 934
February 11, 2008
AN ORDINANCE ADOPTING THE INTERNATIONAL PLUMBING CODE, 2006
EDITION; PROVIDING FOR THE ADOPTION OF LOCAL AMENDMENTS
THERETO; PROVIDING FOR RECORDING OF SUCH CODE AS A PUBLIC
RECORD; PROVIDING THAT THIS ORDINANCE SHALL BE CUMULATIVE OF
ALL ORDINANCES; PROVIDING A SEVERABILITY CLAUSE; PROVIDING A
SAVINGS CLAUSE; PROVIDING FOR PUBLICATION IN PAMPHLET FORM;
PROVIDING FOR PUBLICATION IN THE OFFICIAL NEWSPAPER; AND
PROVIDING AN EFFECTIVE DATE.
WHEREAS, The City of Southlake, Texas is a home rule city acting under its charter
adopted by the electorate pursuant to Article XI, Section 5 of the Texas Constitution and Chapter 9
of the Local Goverxunent Code; and
WHEREAS, City Council of the City of Southlake deems it necessary to adopt this
ordinance governing requirements for the installation and maintenance of plumbing systems
including requirements for materials, in order to protect the health, safety and welfare of the citizens
of the City of Southlake.
WHEREAS, 2007, NCTCOG's Regional Codes Coordinating Committee (RCCC) and its
four advisory boards conducted 20 open review meetings over an 8-month period to review the 2006
editions of the International Codes and to develop regional amendments. Their review and
recommendations were completed and endorsed by NCTCOG's Executive Board in October 2007.
Now NCTCOG encourages jurisdictions in North Central Texas to adopt the 2006 International
Plumbing Code along with its respective regional amendments with an effective date of April 1,
2008.
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY
OF SOUTHLAKE, TEXAS:
SECTION 1
That the International Plumbing Code, 2006 Edition, published by The International Code
Council, Inc., is hereby adopted as the Plumbing Code of the City of Southlake, except for plumbing
systems otherwise regulated under the International Residential Code for One- and Two- Family
Dwellings as adopted. A true and correct copy of this Code is attached to this ordinance as Exhibit
..A ~~
SECTION 2
That the 2006 International Plumbing Code, as adopted herein, is hereby amended as
provided in Exhibit "B" incorporated herein and attached hereto for all purposes of this ordinance.
The City of Southlake may from time to time determine that additional local modifications to the
2006 International Plumbing Code are necessary and appropriate to meet the unique construction
needs of the City of Southlake. To effectuate these modifications, the City council shall enact
individual ordinances amending this ordinance fully setting forth the change to be made in the code.
The amendments shall be consolidated as Exhibit "B" to this ordinance.
..j
SECTION 3
The material contained in Exhibits "A" and "B" to this ordinance shall not be included in the
formal municipal codification of ordinances, but shall be maintained as a public record in the office
of the City Secretary and will be available for public inspection and copying during regular business
hours.
SECTION 4
This ordinance shall be cumulative of all provisions of ordinances of the City of Southlake,
Texas, except where the provisions of this ordinance are indirect conflict with the provisions of such
ordinances, in which event the conflicting provisions of such ordinances are hereby repealed.
SECTION 5
It is hereby declared to be the intention of the City Council that the phrases, clauses,
sentences, paragraphs and sections of this ordinance are severable, and if any phrase, clause,
sentence, paragraph or section of this ordinance shall be declared unconstitutional by the valid
judgment or decree of any court of competent jurisdiction, such unconstitutionality shall not affect
any of the remaining phrases, clauses, sentences, paragraphs and sections of this ordinance, since the
same would have been enacted by the City council without the incorporation in this ordinance of any
such unconstitutional phrase, clause, sentence, paragraph or section. It is not the intention of this
ordinance to conflict in any way with the Plumbing License Law of Texas.
SECTION 6
Any person, firm or corporation who violates, disobeys, omits, neglects or refuses to comply
with or who resists the enforcement of any of the provisions of this ordinance shall be fined not more
than Two Thousand Dollars ($2,000.00) for all violations involving zoning, fire safety or public
health and sanitation, including dumping or refuse, and shall be fined not more than five hundred
dollars ($500) for all other violations of this ordinance. Each day that a violation is permitted to
exist shall constitute a separate offense.
SECTION 7
All rights and remedies of the City of Southlake are expressly saved as to any and all
violations of the provisions of any ordinances affecting the installation and maintenance of systems
which have accrued at the time of the effective date of this ordinance; and, as to such accrued
violations and all pending litigation, both civil and criminal, whether pending in court or not, under
such ordinances, same shall not be affected by this ordinance buy may be prosecuted until final
disposition by the courts.
SECTION 8
The City Secretary of the City of Southlake is hereby authorized to publish this ordinance in
book or pamphlet form for general distribution among the public, and the operative provisions of this
ordinance as so published shall be admissible in evidence in all courts without further proof than the
production thereof.
SECTION 9
The City Secretary of the City of Southlake is hereby directed to publish in the official
newspaper of the City of Southlake, the caption, penalty clause, publication clause and effective date
2
of this ordinance one time within ten days after passage of this ordinance, as required by Section 3.13
of the Charter of the City of Southlake.
SECTION 10
This ordinance shall be in full force and effect from and after its passage and publication as
required by law, but not sooner than April 1, 2008 and it is so ordained.
Passed And Approved On First Reading On This Mr' i Day Of , 2008.
MAYOR
ATTEST: -
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CITY SECRETARY ~ ` 'k ~'
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Passed And Approved On Second Reading'~ri'~fhis ~ Day Of , 2008.
MAYOR
ATTEST: ~~'l
CITY SECRETARY "R
APP OVE AS AND LEGA~I~'~ A:}1''`~y
City Attorney
Date: ~~, on~-S' , .z ~ cd'
EFFECTIVE: ~? ~,
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EXHIBIT "B"
Amendments to the
2006 International Plumbing Code
The following sections, paragraphs, and sentences of the 2006 International Plumbing Code are
hereby amended as follows: Standard type is text from the IPC. Underlined type is text inserted.
I ir,°iJ +hrn~ i.,h +~in° i~ rael°+ci-1 +o •+ frnm +h° ~o~ A double asterisk at the beginning of a section
identifies an amendment carried over from the 2003 edition of the code and a triple asterisk
identifies a new or revised amendment with the 2006 edition of the code.
**Table of Contents, Chapter 7, Section 714; change to read as follows:
Section 714 Engineered ~ Drainage Design ........... ... 62
(Reason: Editorial change to make compatible with amendment to Section 714.1.)
**Section 101.2; change exceptions 1 and 2 as follows:
101.2 Scope (Paragraph unchanged)
Exception: Detached one and two- family dwellings ... (unchanged) .. .
International Residential Code as adopted.
(Reason: Recognize amendments to the IRC.)
*Section 102.8; change to read as follows:
102.8 Referenced codes and standards. The codes and standards referenced in this
code shall be those that are listed in Chapter 13 and such codes when s ecificall
adopted, and standards shall be considered as part of the requirements of this code to
the prescribed extent of each such reference. Where the differences occur between
provisions of this code and the referenced standards, the provisions of this code shall
be the minimum requirements. Whenever amendments have been adopted to the
referenced codes and standards each reference to said code and standard shall be
considered to reference the amendments as well Any reference to NFPA 70 or the ICC
Electrical Code shall mean the Electrical Code as adopted
(Reason: Legal wording to recognize locally adopted codes and amendments adopted with referenced
codes.)
**Sections 106.6.2 and 106.6.3; change to read as follows:
106.6.2 Fee schedule. The fees for all plumbing work shall be as ~^~i^~*°~ ~^ +h°
adopted by resolution of the city council.
106.6.3 Fee Refunds. The code official shall establish a policy for °~ ~+~ h~cauthorizing
the refunding of fees. as~eltewrs.(Delete balance of section)
(Reason: This calls to attention the fee schedule and refund policy.)
*`Section 109; Delete entire section and insert the following:
SECTION 109
MEANS OF APPEAL
109 1 General In order to hear and decide appeals of orders, decisions or
determinations made by the building official relative to the application and interpretation
of this code there shall be and is hereby created a board of appeals. The Building
Board of Appeals as established by ordinance 622 as amended shall be the Board of
Appeals referenced in this code.
109 2 Limitations on authority An application for appeal shall be based on a claim
that the true intent of this code or the rules legally adopted thereunder have been
incorrectly interpreted the provisions of this code do not fully apply, or an equally Good
or better form of construction is proposed. The board shall have no authority to waive
requirements of this code.
(Reason: recognize appeal board previously established by ordinance.)
**Section 305.6.1; change to read as follows:
305.6.1 Sewer depth.
. Building sewers shall be a minimum of 12 inches (304 mm)
below grade.
(Reason: Provides sewer depth that is common in this region. Deleted reference to private sewage
disposal because a private sewage disposal code is not adopted.)
**Section 305.9; change to read as follows:
305.9 Protection of components of plumbing system. Components of a plumbing
system installed within 3 feet along alleyways, driveways, parking garages or other
locations in a manner in which they would be exposed to damage shall be recessed into
the wall or otherwise protected in an approved manner.
(Reason: Provide a common cutoff point to designate a general separation distance at which plumbing
systems should be safe for consistency in enforcement.)
**Section 310.4 and 310.5; delete.
(Reason: Enforcement of privacy walls and doors, and the maintenance thereof, should not be a code
issue. It is an owner courtesy issue.)
**Sections 312.9.1 and 312.9.2; change to read as follows:
312.9.1 Inspections. Annual inspections shall be made of all backflow prevention
assemblies and air gaps to determine whether they are operable. See Ordinance No.
699A Cross Connection Control Policy.)
312.9.2 Testing. Reduced pressure principle backflow preventer assemblies, double
check-valve assemblies, pressure vacuum breaker assemblies, reduced pressure
detector fire protection backflow prevention assemblies, double check detector fire
protection backflow prevention assemblies, hose connection backflow preventers, and
spill-proof vacuum breakers shall be tested at the time of installation, immediately after
repairs or relocation and at least annually. The testing procedure shall be performed in
accordance with applicable local provisions. In the absence of local provisions, the
owner is responsible to ensure that testing is done in accordance with one of the
following standards:
{list of standards unchanged}
(Reason: Recognize TCEQ or other local testing procedures that must be adhered to. To place
responsibility of testing on the owner.)
. ,.r
**Section 314.2.1; modify second sentence to read as follows:
314.2.1 Condensate disposal. Condensate from all cooling coils and evaporators
shall be conveyed from the drain pan outlet to an approved place of disposal.
Condensate shall not discharge into a street, alley, sidewalk, rooftop, or other areas so
as to cause a nuisance.
(Reason: Greater specificity in prohibited locations for condensate discharge. Consistent with regional
amendment to IMC 307.2.1.)
***Section 314.2.2; change to read as follows:
314.2.2 Drain pipe materials and sizes. Components of the condensate disposal
system shall be cast iron, galvanized steel, copper, cross-linked polyethylene,
polybutylene, polyethylene, ABS, CPVC, or schedule 80 PVC pipe or tubing when
exposed to ultra violet light. All components shall be selected for the pressure, a~
temperature and exposure rating of the installation. Condensate waste and drain line
size shall not be less than 3/-inch (19 mm) internal diameter and shall not decrease in
size from the drain pan connection to the place of condensate disposal. Where the
drain pipes from more than one unit are manifolded together for condensate drainage,
the pipe or tubing shall be sized in accordance with an approved method. All horizontal
sections of drain piping shall be installed in uniform alignment at a uniform slope
(Reason: To provide greater flexibility of materials when exposed to ultra violet light. )
**Section 401.1; add a sentence to read as follows:
The provisions of this Chapter are meant to work in coordination with the provisions of
the Building Code. Should any conflicts arise between the two chapters the Code
Official shall determine which provision applies
(Reason: Gives discretion to Code Official in case of code conflict.)
**Section 403.1 and 403.1.2; change to read as follows:
403.1 Minimum number of fixtures. Plumbing fixtures shall be provided for the type
of occupancy and in the minimum number as follows:
1. Assembly Occupancies: At least one drinking fountain shall be provided at each
floor level in an approved location.
Exception: A drinking fountain need not be provided in a drinking or
dining establishment.
2. Groups A, B, F, H I M and S Occupancies• Buildings or portions thereof where
persons are employed shall be provided with at least one water closet for each
sex except as provided for in Section 403.2.
3. Grou E Occu ancies: Shall be rovided with fixtures as shown in Table 403.1.
4. Group R Occupancies: Shall be provided with fixtures as shown in Table 403 1
It is recommended, but not required that the minimum number of fixtures provided also
comply with the number shown in Table 403.1. Types of occupancies not shown in
Table 403.1 shall be considered individually by the code official. The number of
occupants shall be determined by the International Building Code. Occupancy
classification shall be determined in accordance with the International Building Code.
6
403 1 2 Finish material. Finish materials shall comply with Section 1209 of the
International Building Code.
(Reason: Table 403.1 is made optional. Gives minimum requirements in body of code. Consistent with
regional amendments to IBC Section 2902.)
**Section 405.6; delete.
(Reason: Texas State regulations cover plumbing in mental health centers. Consistent with regional
amendment to IPC 1002.10.)
**Section 409.2; change to read as follows:
409.2 Water connection. The water supply to a commercial dishwashing machine
shall be protected against backflow by an air gap or backflow preventer in accordance
with Section 608.
(Reason: Domestic dishwashing machines would be difficult to enforce and should already come
equipped with backflow preventers. Consistent with regional amendments in IPC Section 608.)
**Section 410.1; change to read as follows:
410.1 Approval. Drinking fountains shall conform to ASME A112.19.1 M, ASME
A112.19.2M or ASME A112.19.9M, and water coolers shall conform to ARI 1010.
Drinking fountains and water coolers shall conform to NSF 61, Section 9. `^/h°rc ,.,°+or
~ ~h fifi i~orl fnr nn~ mnrc 4h~+n C.fl ncrnon4 of +ho rcn~ ~ircrl rlrinl~inn fni in~~in~
Exception: A drinking fountain need not be provided in a drinking or
dining establishment.
(Reason: Coincide with amendments made to IPC 403.1 and IBC 2902.1.)
**Section 412.4; change to read as follows:
412.4 Required location C~~1,'~^'~~~^~'~~°~ ^^~' ^°"*r°' ••~°~~~~~ ~"-~!~±~°~. Floor
drains shall be installed in the following areas.
1. In public coin-operated laundries and in the central washing facilities of multiple
family dwellings, the rooms containing automatic clothes washers shall be provided
with floor drains located to readily drain the entire floor area.
~minim~ ~m ni X4104 of nn~ lo~~ ~h•±n Z innhoc /7R mm\ in ~Jiomc~or
2. Commercial kitchens. (In lieu of floor drains in commercial kitchens, the code
official may accept floor sinks.)
(Reason: To make more compatible with local health code practices.)
**Section 413.4; change to read as follows:
413.4 Water supply required. All food waste grinders shall be provided with a supply
of cold water. The water supply shall be protected against backflow by an air gap or
with the installation of a backflow preventer in accordance with Section 608.
(Reason: Consistent with local practice and regulations. Consistent with regional amendments in IPC
Section 608.)
`.
*`Section 417.5; change to read as follows:
417.5 Shower floors or receptors. Floor surfaces shall be constructed of impervious,
noncorrosive, nonabsorbent and waterproof materials.
Thresholds shall be a minimum of 2 inches (51 mm) and a maximum of 9 inches (229
mm), measured from top of the drain to top of threshold or dam Thresholds shall be of
sufficient width to accommodate a minimum twenty-two (22) inch (559 mm) door
Exception: Showers designed to comply with ICC/ANSI A117 1
(Reason: To provide more specific requirements.)
*Section 417.5.2; change to read as follows:
417.5.2 Shower lining. Floors under shower compartments, except where
prefabricated receptors have been provided, shall be lined and made water tight
utilizing material complying with Sections 417.5.2.1 through 417.5.2.4. Such liners shall
turn up on all sides at least 2 3 inches (a-1.76 mm) above the finished threshold level
and shall extend outward over the threshold and fastened to the outside of the
threshold iamb. Liners shall be recessed and fastened to an approved backing .. .
{remainder of section unchanged} ... .
(Reason: Consistent with local practice.)
**Add Section 417.7 to read as follows:
417.7 Test for shower receptors. Shower receptors shall be tested for water
tightness by filling with water to the level of the rough threshold The drain shall be
plugged in a manner so that both sides of pans shall be subjected to the test at the
point where it is clamped to the drain.
(Reason: To clarify that a water test is required for a shower receptor.)
**Section 419.3; change to read as follows:
419.3 Surrounding material. Wall and floor space to a point 2 feet (610 mm) in front of
a urinal lip and 4 feet (1219 mm) above the floor and at least 2 feet (610 mm) to each
side of the urinal shall be waterproofed with a smooth, readily cleanable, hard,
nonabsorbent material.
(Reason: Match un-amended IBC 1209.)
**Section 502.3; change to read as follows:
502.3 Water heaters installed in attics. Attics containing a water heater shall be
provided ... {bulk of paragraph unchanged} ...side of the water heater. The clear
access opening dimensions shall be a minimum of 20 inches by 30 inches (508 mm by
762 mm), or larger where such dimensions are not large enough to allow removal of the
water heater.
(Reason: To ensure adequate access.)
***Add Section 502.5 and 502.5.1 to read as follows:
502.5 Water heaters above ground or floor. When the attic roof mezzanine or
platform in which a water heater is installed is more than eight (8) feet (2438 mm)
above the ground or floor level it shall be made accessible by a stairway or permanent
ladder fastened to the building.
Exception• Amax 10 gallon water heater (or larger with approval) is capable of
being accessed through a lay-in ceiling and a water heater is installed is not
more than ten (10) feet (3048 mm) above the ground or floor level and may be
reached with a portable ladder.
502 5 1 Whenever the mezzanine or platform is not adequately lighted or access to a
receptacle outlet is not obtainable from the main level, lighting and a receptacle outlet
shall be provided in accordance with Section 502.1.
(Reason: To provide safe access to water heaters and to provide lighting and receptacle for maintenance
of equipment. Consistent with regional amendments to IFGC 306.7 and IMC 306.6. Note reference to
amendment above.)
***Section 504.6; change to read as follows:
504.6 Requirements for discharge piping. The discharge piping serving a pressure
relief valve, temperature relief valve or combination thereof shall:
1. Not be directly connected to the drainage system.
2. Discharge through an air gap. 1~°~ ~^ +"° °^m° r^^^^ ^c~"~;;a~«
heater.
3. Not be smaller than the diameter of the outlet of the valve served and
shall discharge full size to the air gap.
4. Serve a single relief device and shall not connect to piping serving any
other relief device or equipment.
Exception: Multiple relief devices may be installed to a single T & P
discharge piping system when approved by the administrative
authority and permitted by the manufactures installation instructions
and installed with those instruction.
5. Discharge te~he~leeF to an indirect waste receptor or to the outdoors.
Where discharging to the outdoors in areas subject to freezing, discharge
piping shall be first piped to an indirect waste receptor through an air gap
located in a conditioned area.
6. Discharge in a manner that does not cause personal injury or structural
damage.
7. Discharge to a termination point that is readily observable by the building
occupants.
8. Not be trapped.
9. Be installed so as to flow by gravity.
10. Not terminate less than 6 inches or more than 24 inches (152 mm) above
grade #)-ie-#leer e~ nor more than 6 inches above the waste receptor.
11. Not have a threaded connection at the end of such piping.
12. Not have valves or tee fittings.
13. Be constructed of those materials listed in Section 605.4 or materials
tested, rated and approved for such use in accordance with ASME
A112.4.1.
(Reason: To provide a higher degree of safety.)
9
*~Add Section 604.4.1 to read as follows:
604.4.1 State maximum flow rate. Where the State mandated maximum flow rate is
more restrictive than those of this section the State flow rate shall take precedence
(Reason: To recognize State standards.)
~`*Tables 605.3 and 605.4; delete "Polybutylene (PB) plastic pipe and tubing' ;
(Reason: Polybutylene pipe is not allowed for use in this region due to past performance.)
**Section 606.1; delete items #4 and #5.
606.1 Location of full-open valves. Full-open valves shall be installed in the following
locations:
1. On the building water service pipe from the public water supply near the curb.
2. On the water distribution supply pipe at the entrance into the structure.
3. On the discharge side of every water meter.
6. On the entrance to every water supply pipe to a dwelling unit, except where
supplying a single fixture equipped with individual stops.
7. On the water supply pipe to a gravity or pressurized water tank.
8. On the water supply pipe to every water heater.
(Reason: The code is too restrictive as written.)
***Section 606.2; items #1 and 2 change to read as follows:
1. On the fixture supply to each plumbing fixture other than bathtubs and
showers in one- and two-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-
3. 2 On the water supply pipe to each appliance or mechanical equipment.
(Reason: To provide shut-off valves to every fixture.)
**Section 608.1; change to read as follows:
608.1 General. A potable water supply system shall be designed, installed and
maintained in such a manner so as to prevent contamination from nonpotable liquids,
solids or gases being introduced into the potable water supply through cross-
connections or any other piping connections to the system. Backflow preventer
applications shall conform to applicable local regulations (See Cross Connection
Control Policy Ordinance No. 699) Table 608.1, except and as specifically stated in
Sections 608.2 through 608.16.9.
(Reason: To recognize local requirements.)
10
***Section 608.16.5; change to read as follows:
608.16.5 Connections to lawn Irrigation Systems. The potable water supply system
to lawn irrigation systems shall be protected ~ against backflow by an atmospheric-
type vacuum breaker, a pressure type vacuum breaker, adouble-check assembly or a
reduced pressure principle backflow preventer ... {remainder of section unchanged}.
(Reason: To recognize regional practices.)
**Section 608.17; change to read as follows:
608.17 Protection of individual water supplies. An individual water supply shall be
located and constructed so as to be safeguarded against contamination in accordance
with applicable local regulations. In the absence of other local regulations, installation
shall be in accordance with Sections 608.17.1 through 608.17.8.
(Reason: To allow local requirements to govern.)
***Section 610.1; add exception to read as follows:
610.1 General. New or repaired potable water systems shall be purged of deleterious
matter and disinfected prior to utilization. The method to be followed shall be that
prescribed by the health authority or water purveyor having jurisdiction or, in the
absence of a prescribed method, the procedure described in either AWWA C651 or
AWWA C652, or as described in this section. This requirement shall apply to "on-site"
or "inplant" fabrication of a system or to a modular portion of a system.
1. The pipe system shall be flushed with clean, potable water until dirty water does
not appear at the points of outlet.
2. The system or part thereof shall be filled with awater/chlorine solution containing
at least 50 parts per million (50 mg/L) of chlorine, and the system or part thereof
shall be valved off and allowed to stand for 24 hours; or the system or part
thereof shall be filled with awater/chlorine solution containing at least 200 parts
per million (200 mg/L) of chlorine and allowed to stand for 3 hours.
3. Following the required standing time, the system shall be flushed with clean
potable water until the chlorine is purged from the system.
4. The procedure shall be repeated where shown by a bacteriological examination
that contamination remains present in the system.
Exception• With prior approval the Code Official may wave this requirement when
deemed un-necessary by the Code Official.
(Reason: May not always be needed)
**Add Section 712.5 to read as follows:
712.5 Dual Pump System. All sumps shall be automatically discharged and, when in
any "public use" occupancy where the sump serves more than 10 fixture units, shall be
provided with dual pumps or ejectors arranged to function independently in case of
overload or mechanical failure. For storm drainage sumps and pumping systems, see
Section 1113.
(Reason: To address dual pump system. To provide reference for storm drainage systems.)
11
**Section 714, 714.1; change to read as follows:
SECTION 714
ENGINEERED DRAINAGE DESIGN
714.1 Design of drainage system. The sizing, design and layout of the drainage
system shall be permitted to be designed by approved sen~ter design methods.
(Reason: Code was too restrictive.)
***Section 802.1.6; amended sentence to read as follows:
802.1.6 Domestic dishwashing machines. Domestic dishwashing machines shall
discharge indirectly through an air gap or air break into a standpipe or waste receptor in
accordance with Section 802.2, or discharge into a wye-branch fitting on the tailpiece of
the kitchen sink or the dishwasher connection of a food waste grinder. The waste line of
a domestic dishwashing machine discharging into a kitchen sink tailpiece or food waste
grinder shall connect to adeck-mounted air gap. oT~~ast~° ch^~~ rise ^nrl h
~ n~ ~r ~i f~~,r~nei-! }^ }hp ~ ~ni-ler~~ef +ho ~inL rim ^r ^^~ ~n+er
r ~Tf~-CTl1'7"lTI'GZITfCtGTO v vyc~ ~ Ti4T
(Reason: Provide positive backflow protection to the water supply and prevent contamination of the
contents of the dishwasher and to be consistent with IRC Section 2717.3)
**Section 802.4; add a sentence to read as follows:
No standpipe shall be installed below the ground
(Reason: To make systems less susceptible to improper modifications.)
**Section 904.1; changed to read as follows:
904.1 Roof extension. All open vent pipes that extend through a roof shall be
terminated at least six (6) inches (152 mm) 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 (2134 mm) above the roof.
(Reason: To provide regional guideline on standard installation method for this climate area.)
***Section 906.1; changed to read as follows:
906.1 Distance of trap from vent. Each fixture trap shall have a protecting vent
located so that the slope and the developed length in the fixture drain from the trap weir
to the vent fitting are within the requirements set forth in Table 906.1.
(Reason: To be consistent with regional establish practices)
**Section 912.1; change to read as follows:
912.1 Type of fixture. A combination drain and vent system shall not serve fixtures
other than floor drains, ainLe ~,,,,+nrioe °^i-1 rlrinLin^ f,,..r,+^i.,~ standpipes, and indirect
waste receptors. Combination drain and vent systems shall not receive the discharge
from a food waste grinder or clinical sink.
(Reason: To prevent trap siphoning of sinks and lavatories.)
12
***Section 906.1; changed to read as follows:
917.3 Where permitted. Individual, branch and circuit vents serving kitchen islands or
bar sinks shall be permitted to terminate with a connection to an individual or branch-
type air admittance valve. All other installations shall require prior approval from the
Code Official. Stack vents and vent stacks shall be permitted to terminate to stack-type
air admittance valves. Individual and branch-type air admittance valves shall vent only
fixtures that are on the same floor level and connect to a horizontal branch drain. The
horizontal branch drain having individual and branch-type air admittance valves shall
conform to Section 917.3.1 or 917.3.2. Stack-type air admittance valves shall conform
to Section 917.3.3.
(Reason: Language consistent with current procedure to allow AAV's with advance approval.)
**Section 1002.10; delete.
(Reason: Texas State regulations cover plumbing in mental health centers. Consistent with regional
amendment to IPC 405.6.)
***Section 1101.8; change to read as follows:
1101.8 cleanouts required. cleanouts shall be installed in the buildin storm drainage
system and shall comply with the provisions of this code for sanitary drainage pipe
cleanouts.
Exception: Subsurface drainage system.
(Reason: To specify that cleanouts are only required in the building.)
**Section 1106.1; change 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 shall be
based on six (6) inches per hour rainfall rate i^,+i^°+°,+ in ~in„r°
(Reason: Specify the roof drain size normally used in the area.)
**Section 1107.3; change to read as follows:
1107.3 Sizing of secondary drains. Secondary (emergency) roof drain systems shall
be sized in accordance with Section 1106 h-~~°,+ nn +h° r.,inf.,Il r•++° f^r ~~ihinh +h°
r,r,~~e~~`°.+ ir, T.±h~°~ ~ ~ na ~ ~ ~ n~.~ °r,~ ~ ~ na a, Scuppers shall be sized
to prevent the depth of ponding water ... {remainder of section unchanged} ... .
(Reason: Specify that overflow drainage is to be the same size as the normal roof drains.)
**Section 1202.1; delete Exception 2.
(Reason: State law already specifies that vacuum systems must comply with NFPA 99C.)
END OF AMENDMENTS
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