Item 4L
P&DSD
LANNING EVELOPMENT ERVICES EPARTMENT
BID
UILDING NSPECTIONS IVISION
1400MS,S250,S,TX76092
AIN TREET UITE OUTHLAKE
www.cityofsouthlake.com
M E M O R A N D U M
February 4, 2008
TO:
Shana Yelverton, City Manager
FROM:
Paul Ward, CBO, Building Official
SUBJECT
: Ordinance No. 934, 1st Reading, adopt the 2006 International Plumbing Code. (if
approved at first reading, the public hearing will be held March 4, 2008)
Purpose:
The purpose of Ordinance No. 934 is to update the Plumbing Code of the
City to the 2006 Edition.
Applicability:
The Plumbing Code applies to the installation of all plumbing systems and
nonflammable medical gas, inhalation anesthetic, vacuum piping,
nonmedical oxygen systems and sanitary and condensate vacuum
collection systems, in the City of Southlake
Methodology:
Since 1967, the North Central Texas Council of Governments has actively
promoted the standardization of model construction codes in an effort to
simplify the construction process, advance the safety of building systems,
promote common code interpretation, facilitate the mobility of contractors,
and reduce training and construction costs.
The Regional Codes Coordinating Committee (RCCC) and its four
Advisory Boards comprised of local public and private code professionals
continually review the latest editions of the model construction codes and
recommend uniform amendments for the North Central Texas region.
The City of Southlake has representatives sitting on the various
committees participating in the regional recommendation process.
Page 1 of 18
BBA
On January 24, 2008 the Building Board of Appeals met to consider the
proposed ordinances adopting the 2006 I Codes. Charles Bloomberg,
Plans Examiner and David Barnes, Fire Marshal explained the changes in
the I Codes from 2003 to 2006. Mr. Bloomberg explained the most
significant changes; 1) Residential sprinkling to include non-living space
equaling 6,000 square feet or greater (garages and unfinished bonus
rooms). 2) New fee for unauthorized cover up during construction. 3)
Plumbing AAV (Air Admittance Valve) must be approved prior to
installation and must be marked on plans.
Discussion: Board members and Staff discussed general code
compliance.
A motion was made to recommend adoption of 2006 I Codes with local
amendments. Motion Passed unanimously.
SPIN:
On January 28, 2008, staff held a citywide SPIN meeting in Southlake
Town Hall to present the 8 ordinances in the current 2006 code package.
Explanation was given of the impact, focusing primarily on residential
construction. Questions were asked about specific applications, but no
specific objections were aired.
Action Requested
: Conduct a public hearing and make a recommendation on Ordinance No.
934, adopting the 2006 International Plumbing Code and certain local
amendments.
Attachments:
Attachment A- International Codes Update Memo.
Attachment B- Proposed Ordinance 934, 2006 International Plumbing
Code.
Page 2 of 18
M E M O R A N D U M
Date: January 29, 2008
TO: Paul Ward, Chief Building Official
FROM: Chuck Bloomberg, Plans Examiner
SUBJECT: International Codes Update
The City of Southlake has adopted the International Code Council’s construction codes as
our local building codes with regional and local amendments. The codes are continually
updated on the national level and are published every three years. The current codes, the
2006 edition have been reviewed by the Regional Code Coordinating Committee and
Executive Council of the North Central Texas Council of Governments and recommended
for adoption by area cities.
Highlights of the proposed ordinances you may wish to include in the Council Memo are as
follows:
2006 International Building Code. This code regulates all buildings not covered by the
IRC. The administrative chapter includes our permits for grading or “earth disturbance.” The
fee section is similar to the IRC ordinance. Again the NCTCOG recommendations are
followed except for some items that are more clarification than actual code changes. We
follow the NCTCOG choice for group B cities as far as fire sprinkler options, protecting
buildings greater than 6000 square feet as we have since 1994 with some modifications.
2006 International Fire Code. This code establishes regulations affecting or relating to
structures, processes, premises and safeguards regarding: (1.) The hazard of fire and
explosion arising from the storage, handling or use of structures, materials or devices; (2.)
Conditions hazardous to life, property or public welfare in the occupancy of structures or
premises; (3.) Fire hazards in the structure or on the premises from occupancy or operation;
(4.) Matters related to the construction, extension, repair, alteration or removal of fire
suppression or alarm systems. Amendments include NCTCOG recommendations and Fire
Services recommendations.
2006 International Energy Conservation Code. This is the code mandated by state law
with specific language that we may not amend it in any way less restrictive than the original
code adopted in 2001. The law established the Energy Systems Laboratory at Texas A & M
University as the judge as to what is or is not less restrictive. ESL worked closely with
NCTCOG in making recommendations for this edition of the code.
Attachment A
International Codes Update Memo
Page 3 of 18
2006 ICC Electrical Code Administrative Provisions. This code adopts the 2008
National Electrical Code by reference as written without amendments and also gives the
administrative provisions consistent with the other
International Codes.
• 2006 International Plumbing Code. This code regulates plumbing systems including
water and sewage and storm sewer piping systems and their fixtures. The Plumbing
ordinance limits amendments to those recommended by NCTCOG.
• 2006 International Fuel Gas Code. This code regulates gas piping, fuel burning
appliances and their vents. Again amendments are limited to the NCTCOG
recommendations.
• 2006 International Mechanical Code. This code regulates Heating, Air Conditioning and
mechanical ventilation systems. The NCTCOG amendments have been recommended for
the IMC.
• 2006 International Residential Code. This code regulates one and two-family dwellings
and townhouses not over three stories high and their accessory structures. The IRC is
unique in that one book covers all construction for dwellings including building, electrical,
plumbing, energy conservation, plumbing, heating and air conditioning and fuel gas piping.
Other than in the administrative chapter and appendix chapters the amendments are as
recommended by NCTCOG. In section 108.8 an unauthorized cover up fee was added to
help get final inspections on swimming pools prior to filling them. The energy code
provisions were revised by ICC and therefore had to be amended to remain in compliance
with state law. The residential sprinkler requirements were changed as recommended by
Fire Services.
Attachment A
International Codes Update Memo
Page 4 of 18
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 Government 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
Attachment B Page 5 of 18
2006 International Plumbing Code
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.
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 in direct 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 theCity of Southlake are expressly saved as to any and all
violations of the provisionsof 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.
Attachment B Page 6 of 18
2006 International Plumbing Code
SECTION 9
The CitySecretary 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 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 February 1, 2008 and it is so ordained.
Passed And Approved On First Reading On This Day Of , 2008.
_
MAYOR
ATTEST:_
CITY SECRETARY
Passed And Approved On Second Reading On This Day Of , 2008.
_
MAYOR
ATTEST:_
CITY SECRETARY
APPROVED AS TO FORM AND LEGALITY:
City Attorney
Date:
EFFECTIVE:
Attachment B Page 7 of 18
2006 International Plumbing Code
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.
Lined through type is deleted text from the IPC. 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 Computerized 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 specifically
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 asindicated in the
following schedule: (JURISDICTION TO INSERT APPROPRIATE SCHEDULE)
adopted by resolution of the city council.
106.6.3 Fee Refunds.
The code official shall establish a policy for authorize authorizing
the refunding of fees. as follows.(Delete balance of section)
(Reason: This calls to attention the fee schedule and refund policy.)
**Section 109; Delete entire section and insert the following:
Attachment B Page 8 of 18
2006 International Plumbing Code
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 that connect to private sewage disposal
systems shall be a minimum of [number] inches (mm) below finished grade at the point
of septic tank connection. 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
Attachment B Page 9 of 18
2006 International Plumbing Code
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.)
**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, and
temperature and exposure rating of the installation. Condensate waste and drain line
size shall not be less than ¾-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
Attachment B Page 10 of 18
2006 International Plumbing Code
sex except as provided for in Section 403.2.
3. Group E Occupancies: Shall be provided 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.
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 A112.19.1M, 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. Where water
is served in restaurants or where bottled water coolers are provided in other
occupancies, drinking fountains shall not be required. In other occupancies, where
drinking fountains are required, bottled water dispensers shall be permitted to be
substituted for not more than 50 percent of the required drinking fountains.
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 Public laundries and central washing facilities.
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. Such drains shall have
a minimum outlet of not less than 3 inches (76 mm) in diameter.
Attachment B Page 11 of 18
2006 International Plumbing Code
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 (51 76 mm) above the finished threshold level and shall
extend outward over the threshold and fastened to the outside of the threshold jamb.
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
Attachment B Page 12 of 18
2006 International Plumbing Code
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:
A max 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. located in the same room as the water
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.
Attachment B Page 13 of 18
2006 International Plumbing Code
5. Discharge to the floor, 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 the floor or 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.)
**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.
4. On the base of every water riser pipe in occupancies other than multiple-family
residential occupancies that are two stories or less in height and in one- and two-
family residential occupancies.
5. On the top of every water down-feed pipe in occupancies other than one- and
two-family residential occupancies.
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:
Attachment B Page 14 of 18
2006 International Plumbing Code
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. On the water supply pipe to each sillcock.
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.)
***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 by against backflow by an atmospheric-
type vacuum breaker, a pressure type vacuum breaker, a double-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.
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2. The system or part thereof shall be filled with a water/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 a water/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.)
**Section 714, 714.1; change to read as follows:
SECTION 714
ENGINEERED COMPUTERIZED 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 computer 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 a deck-mounted air gap. or the waste line shall rise and be
securely fastened to the underside of the sink rim or counter.
(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.)
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**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.
Exception:
The developed length of the fixture drain from the trap weir to the
vent fitting for self-siphoning fixtures, such as water closets, shall not be limited.
(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, sinks, lavatories, and drinking fountains 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.)
***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:
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1101.8 Cleanouts required.
Cleanouts shall be installed in the building 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 the 100-year hourly rainfall rate indicated in Figure
1106.1 or on other rainfall rates determined from approved local weather data.
(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 based on the rainfall rate for which the
primary system is sized in Tables 1106.2, 1106.3 and 1106.6. 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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