Item 6J
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
March 4, 2008
TO:
Shana Yelverton, City Manager
FROM:
Paul Ward, CBO, Building Official
SUBJECT
: Ordinance No. 937, 2nd Reading, adopt the 2006 International Residential Code.
Purpose:
The purpose of Ordinance No. 937 is to update the Residential Code of
the City to the 2006 Edition.
Applicability:
The Residential Code applies to the construction and alteration use and
of detached one- and two-family dwellings and townhouses not more than
three stories above-grade in height with a separate means of egress and
their accessory structures 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.
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
Page 1 of 33
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.
937, adopting the 2006 International Residential Code and certain local
amendments.
Attachments:
Attachment A- International Codes Update Memo.
Attachment B- Proposed Ordinance 937, 2006 International Residential
Code.
Page 2 of 33
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.
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
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.
Page 3 of 33
• 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
2006 International Residential Code
February 11, 2008
Page 4 of 33
ORDINANCE NO937
.
AN ORDINANCE ADOPTING THE 2006 EDITION OF THE INTERNATIONAL
RESIDENTIAL CODE FOR ONE- AND TWO-FAMILY DWELLINGS,
REGULATING THE ERECTION, CONSTRUCTION, ENLARGEMENT,
ALTERATION, REPAIR, MOVING, REMOVAL, DEMOLITION,
CONVERSION, OCCUPANCY, EQUIPMENT, USE, HEIGHT, AREA AND
MAINTENANCE OF ALL ONE- AND TWO-FAMILY DWELLINGS AND
MULTIPLE SINGLE-FAMILY DWELLINGS (TOWNHOUSES) IN THE CITY
OF SOUTHLAKE AND 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 FOR A PENALTY FOR VIOLATIONS HEREOF;
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 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,
the City Council of the City of Southlake deems it necessary to adopt this
ordinance providing minimum standards to safeguard the health, property, and welfare of the
citizens of Southlake by regulating and controlling the use, occupancy, maintenance, repair,
design, construction and quality of materials for residential buildings and structures within the
City.
WHEREAS,
beginning in the spring of 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 September 2007. Now NCTCOG encourages jurisdictions in North Central
Texas to adopt the 2006 International Residential Code for One- and Two-Family Dwellings
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
Page 5 of 33
That the International Residential Code for One- and Two-Family Dwellings, 2006
Edition, published by the International Code Council, including the standards referenced therein,
including Appendix Chapters A, B, C, E, G, H, J and P are hereby adopted as the Residential
Building Code of the City of Southlake regulating the erection, construction, enlargement,
alteration, repair, moving, removal, demolition, conversion, occupancy, equipment, use, height,
area and maintenance of all one- and two-family dwellings, multiple single-family dwellings
(townhouses) and their accessory structures in the City of Southlake. True and correct copies of
these documents are attached as Exhibit "A."
SECTION 2
That the 2006 International Residential 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, Texas may from time to time determine that additional local modifications to
the Building Code are necessary and appropriate to meet the unique needs of the City of
Southlake, Texas. To effectuate these local modifications, the City Council shall enact
individual ordinances amending this Ordinance, fully setting forth the change to be made in the
Residential Building Code. Upon adoption, copies of these amendments shall be attached to
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.
Attachment B
Page 6 of 33
Proposed Ordinance 937 International Residential Code
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 regulation and control of the use,
occupancy, maintenance, repair, design, construction and quality of materials for buildings and
structures within the City 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 but
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 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
but not before April 1, 2008 as required by law.
Attachment B
Page 7 of 33
Proposed Ordinance 937 International Residential Code
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 8 of 33
Proposed Ordinance 937 International Residential Code
EXHIBIT B
Amendments to the
2006 International Residential Code
The following sections, paragraphs, and sentences of the 2006 International Residential
Code for One- and Two-family Dwellings are hereby amended as follows:
Standard type is text from the IRC. Underlined type is text inserted. Lined through type
is deleted text from IRC.) Double asterisk (**) at the beginning of a section is an
amendment carried over from the 2003 Edition of the code and a triple asterisk (***)
identifies an amendment new with the 2006 code.
After each amendment a reason is given in parentheses. The reason is not a part of the
code, but is given to aid in understanding of the code.
***Section R101.1; Insert city name as follows:
R101.1 Title.
These regulations shall be known as the Residential Code for One- and
Two-family Dwellings of The City of Southlake, Texas hereinafter referred to as "this
code."
**Section R102.4; change to read as follows:
R102.4 Referenced codes and standards.
The codes, when specifically adopted, and
standards referenced in this code shall be considered part of the requirements of this
code to the prescribed extent of each such reference. 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
made to NFPA 70 or the ICC Electrical Code shall mean the Electrical Code as
adopted.
Where differences occur between provisions of this code and referenced codes and
standards, the provisions of this code shall apply.
Exception:
Where enforcement . . .{remainder of exception unchanged.}. . . .
(Reason: Legal wording to recognize locally adopted codes and amendments adopted
with referenced codes.)
**Section R105.1, Add the following sentence:
105.1 Required.
Any owner or authorized agent who intends to construct, enlarge,
alter, repair, move, demolish, or change the occupancy of a building or structure, to
excavate or change the grade of any property or to erect, install, enlarge, alter, repair,
remove, convert or replace any electrical, gas, mechanical or plumbing system, the
Attachment B
Page 9 of 33
Proposed Ordinance 937 International Residential Code
installation of which is regulated by this code, or to cause any such work to be done,
shall first make application to the building official and obtain the required permit. For
excavation or grading permits see IBC appendix chapter J as adopted.
(Reason: to make it clear that grading is regulated under the IBC even if on a residential lot.)
***
Section105.2: amend item 2 under Building and Electrical as follows:
Building:
1. (No change)
2. Fences not over 6 feet(1829 mm) high) except masonry fences or pool barriers.
3. – 9. (No change)
(Reason: Consistent with current policy.)
Electrical
:Repairs and maintenance:
A permit shall not be required for minor repair work,
including the replacement of lamps or the connection of approved portable electrical equipment
Minor repair work, including the
to approved permanently installed receptacles.
replacement of lamps or the connection of approved portable electrical equipment to
approved permanently installed receptacles. Repair or replacement of fixed motors,
transformers or fixed approved appliances of the same type and rating in the same
location; Repair or replacement of current-carrying parts of any switch, contactor or
control device; Reinstallation of attachment plug receptacles, but not the outlets
therefor; Repair or replacement of any overcurrent device of the required capacity in the
same location; Taping joints.
Temporary testing systems:
A permit shall not be required for the installation of any
temporary system required for the testing or servicing of electrical equipment
or apparatus.
Other exemptions:
Temporary decorative lighting; Removal of electrical wiring;
Electrical wiring, devices, appliances, apparatus or equipment operating at less than 25
volts and not capable of supplying more than 50 watts of energy; Low-energy power,
control and signal circuits of Class II and Class III as defined in the Electrical Code.
(Reason: To match amended wording in IBC ordinance using the more specific language from
the old UAC.)
***Section 105.3.1 and 105.3.2; change to read as follows:
§RR105.3.1 Action on application.
The building official shall examine or cause to be
examined applications for permits and amendments thereto within a reasonable time
after filing, but not less than required by state law. If the application or the construction
documents do not conform to the requirements of pertinent laws, the building official
shall reject such application in writing, stating the reasons therefor. If the building official
is satisfied that the proposed work conforms to the requirements of this code and laws
and ordinances applicable thereto, the building official shall issue a permit therefor as
soon as practicable.
Attachment B
Page 10 of 33
Proposed Ordinance 937 International Residential Code
§RR105.3.1.1 Substantially improved or substantially damaged existing buildings
in areas prone to flooding.
For applications for reconstruction, rehabilitation, addition,
or the improvement of existing buildings or structures located in an area prone to
flooding as established by Ordinance 641, the building official shall examine or cause to
be examined the construction documents and shall prepare a finding with regard to the
value of the proposed work. Construction in such areas shall only be permitted as
authorized by such ordinance.
(Delete balance of paragraph)
(Reason: to recognize local flood hazard ordinance)
§RR 105.3.2 Time limitation of application.
An application for a permit for any
proposed work shall be deemed to have been abandoned 180 45 days after the date of
filing, unless such application has been pursued in good faith or a permit has been
issued; except that the building official is authorized to grant one or more extensions of
time for additional periods
not exceeding 90 45 days each. A good faith effort shall be deemed to be demonstrated
by response to city comments, requests for additional information or purchasing of
permit within 45 days of notice by the city. The extension shall be requested in writing
and justifiable cause demonstrated.
(Reason: to call attention to state limitations on the city and place similar limitations on
applicants in order to reduce buildup of backlog of plans and applications.)
**Section 108.6; add.
108.6 Re-inspection Fee.
A fee as established by city council resolution may be
charged when:
1. The inspection called for is not ready when the inspector arrives;
2. The temporary electrical pole does not have a building permit clearly posted;
3. No building address or permit card is clearly posted;
4. City approved plans are not on the job site available to the inspector;
5. The building is locked or work otherwise not available for inspection when
called;
6. The job site is red-tagged twice for the same item;
7. The original red tag has been removed from the job site and/or,
8. Violations exist on the property including failure to maintain erosion control,
trash control or tree protection.
Any re-inspection fees assessed shall be paid before any more inspections are made
on that job site.
(Reason: This fee is not a fine or penalty but is designed to compensate for time and trips when
inspections are called for when not ready.)
**Section 108.7 and 108.8; add:
108.7 Investigation Fee.Work without a permit.
108.7.1 Investigation.
Whenever work for which a permit is required by this code has
been commenced without first obtaining a permit, a special investigation shall be made
Attachment B
Page 11 of 33
Proposed Ordinance 937 International Residential Code
before a permit may be issued for such work.
108.7.2 Fee.
An investigation fee, in addition to the permit fee, shall be collected
whether or not a permit is subsequently issued. The investigation fee shall be equal to
the amount of the permit fee required by this code or the city fee schedule as
applicable. The payment of such investigation fee shall not exempt the applicant from
compliance with all other provisions of either this code or the technical codes nor from
penalty prescribed by law.
108.8 Unauthorized cover up fee.
108.8.1
Any work concealed without first obtaining the required inspection in violation of
section 109 shall be assessed a fee as established by the city fee schedule.
(Reason: These fees are not a fine or penalty but are designed to compensate for time and to remove
incentive to attempt to evade permits and code compliance. Language taken from former Uniform
Administrative Code.)
**Section R109.1.3; change to read as follows:
R109.1.3 Floodplain inspections.
For construction permitted in areas prone to
flooding as established by Ordinance 641 Table R301.2(1), upon . . . {bulk of section
unchanged} . . . construction, the building official may shall require submission . . .
{remainder of section unchanged}.
(Reason: Confirmation of elevation is left to local discretion.)
**Section R110 (R110.1 through R110.4); delete.
(Reason: Issuing CO's for residences is not a common practice in the area.)
**Sections 112.1, 112.2 and 112.2.1; Amend as follows:
R112.1 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
official shall be an ex officio member of said board but shall have no vote on any matter
before the board. The board of appeals shall be appointed by the governing body and
shall hold office at its pleasure. The board shall adopt rules of procedure for conducting
its business, and shall render all decisions and findings in writing to the appellant with a
duplicate copy to the building official. The Building Board of Appeals as established by
ordinance 622, as amended, shall constitute the Board of Appeals referenced in this
code.
112.2 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.)
Attachment B
Page 12 of 33
Proposed Ordinance 937 International Residential Code
Section R112.2.1 and Section R112.2.2; delete.
(Reason: Floodplain provisions are addressed by local ordinance.)
***
Section R202; add the following definition:
GLAZING AREA.
Total area of the glazed fenestration measured using the rough
opening and including sash, curbing or other framing elements that enclose conditioned
space. Glazing area includes the area
of glazed fenestration assemblies in walls bounding conditioned basements. For doors
where the daylight opening area is less that 50 percent of the door area, the glazing
area is the daylight opening area. For all other doors, the glazing area is the rough
opening area for the door including the door and the frame.
(Reason: Since the window to wall area ratios have been added to the prescriptive tables, it is necessary
glazing area
to define .)
**Table R301.2(1); fill in as follows:
GROUND SNOW LOAD WIND SPEED d (mph) SEISMIC DESIGN CATEGORY f
5 lb/ft 2 90 (3-sec-gust)/75 fastest mile A
SUBJECT TO DAMAGE FROM
Weathering a Frost line depth b Termite c
moderate 6” very heavy
WINTER DESIGN ICE SHIELD UNDER-FLOOD AIR FREEZING MEAN ANNUAL
ehg i j
TEMP LAYMENT REQUIRED HAZARDSINDEXTEMP
22 o F No Local code 69 o F 64.9 o F
No change to footnotes
(Reason: To promote regional uniformity.)
**Section R302.1; add a second exception as follows:
Exceptions:
1. Tool and storage sheds, playhouses and similar structures exempted from
permits by Section R105.2 are not required to provide wall protection based on
location on the lot. Projections beyond the exterior wall shall not extend over
the lot line.
2. Open metal carport structures may be constructed within zero (0) feet of the
property line without fire-resistive or opening protection when the location of
such is approved as required by other adopted ordinances.
(Reason: Refers to other ordinances, such as zoning ordinances.)
Attachment B
Page 13 of 33
Proposed Ordinance 937 International Residential Code
**Section R303.3, exception; change to read as follows:
Exception:
The glazed areas shall not be required where artificial light and a
mechanical ventilation system, complying with one of the following, are provided.
1. The minimum ventilation rates shall be 50 cfm (24 L/s) for intermittent
ventilation or 20 cfm (10 L/s) for continuous ventilation. Ventilation air from the
space shall be exhausted directly to the outside.
2. Bathrooms that contain only a water closet, lavatory or combination thereof
may be ventilated with an approved mechanical recirculating fan or similar
device designed to remove odors from the air.
(Reason: Consistent with common local practice.)
**Section R303.8; change to read as follows:
R303.8 Required heating.
When the winter design temperature in Table R301.2(1) is
oo
below 60F (16C), every Every dwelling unit shall be provided with heating facilities
oo
capable of maintaining a minimum room temperature of 68F (20C) at a point 3 feet
(914 mm) above the floor and 2 feet (610 mm) from exterior walls in all habitable rooms
at the design temperature. {Remainder of section unchanged}
(Reason: Specifies requirement for this area.)
**Section R311.2.2; change to read as follows:
R311.2.2 Under stair protection.
Enclosed accessible space under stairs shall have
walls, under stair surface and any soffits protected on the enclosed side with 5/8-inch
(15.8 mm) fire-rated 1/2-inch (12.7 mm) gypsum board or one-hour fire-resistive
construction.
(Reason: Represents the standard protection method used in this area.)
**Section R317.1; add a third exception to read as follows:
Exceptions:
1. {existing exception unchanged}
2. {existing exception unchanged}
3. Two-family dwelling units that are also divided by a property line through the
structure shall be separated as required for townhouses.
(Reason: Provide guidance for a common construction method in this area. Correlates with
amendment to IRC Section R202 Townhouse definition.)
.
**Section R318; delete
Attachment B
Page 14 of 33
Proposed Ordinance 937 International Residential Code
(Reason: Vapor retarders are not recommended in this region.)
**Section R321.1; change to read as follows:
R321.1 Premises identification.
Approved numbers or addresses shall be provided for
all new buildings in such a position as to be plainly visible and legible from the street or
road fronting the property. See Ordinance # 441 for specific addressing requirements.
(Reason: Call attention to addressing ordinance.)
**Section R324.1; change to read as follows:
R324.1 General.
Buildings and structures, when permitted to be constructed in flood
hazard areas . . . {bulk of section unchanged} . . . shall be designed and constructed as
required in accordance with the provisions contained in this section or by other local
provisions as applicable.
(Reason: Recognize other local provisions.)
**Section R703.7.4.1; add a second paragraph to read as follows:
2
For 2.67 square feet (0.248 m) of wall area, the following dimensions shall be
adhered to:
1. When ties are placed on studs 16 in (407 mm) o.c., they shall be spaced no further
apart than 24 in (737 mm) vertically starting approximately 12 in (381 mm) from the
foundation.
2. When ties are placed on studs 24 in (610 mm) o.c., they shall be spaced no further
apart than 16 in (483 mm) vertically starting approximately 8 in (254 mm) from the
foundation.
(Reason: Provide easy to install and inspect dimensions for clarity.)
**Add Section R902.3 to read as follows:
R902.3 Minimum Roof Class.
All roof coverings shall be a minimum Class C. All
individual replacement shingles or shakes shall be a minimum Class C.
Exception:
Non-classified roof coverings shall be permitted on buildings of U
occupancies having not more than 120 sq.ft. of projected roof area. When
exceeding 120 sq.ft. of projected roof area, buildings of U occupancies may use
non-rated non-combustible coverings.
(Reason: Consistent with local practice.)
**Section R907.1; add a sentence to read as follows:
All individual replacement shingles or shakes shall comply with Section R902.3.
(Reason: Consistent with local practice. Correlates with regional amendment to
R902.3.)
Attachment B
Page 15 of 33
Proposed Ordinance 937 International Residential Code
***Amend Section N1102.2.1 to read as follows:
N1101.2.1 Warm humid counties.
Warm humid counties are listed in Table N1101.2.1 and
Table N1102.2.2.
***Amend Section N1101.7 to read as follows:
N1101.7 Alternative compliance
. A building certified by a national, state, or local accredited
energy efficiency program and determined by the Energy Systems Laboratory to be in
compliance with the energy efficiency requirements of this section may, at the option of the
Code Official, be considered in compliance. The United States Environmental Protection
Agency's Energy Star Program certification of energy code equivalency shall be considered in
compliance.
(Reason: This amendment is added to allow alternative compliance in accordance with Texas
th
HB 1365, 78 Legislature.)
***Amend Figure N1101.2 to read as follows:
(See Next Page)
Attachment B
Page 16 of 33
Proposed Ordinance 937 International Residential Code
Figure N1101.2 TEXAS CLIMATE ZONES
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.)
***
Amend Table N1101.2 to read as follows:
TABLE N1101.2 CLIMATE ZONES AND SUB CLIMATE ZONES FOR THE NCTCOG
AREA
All of the NCTCOG area including COLLIN, DALLAS, DENTON, ELLIS, ERATH,
HOOD, HUNT JOHNSON, KAUFMAN, NAVARRO, PALO PINTO, PARKER,
ROCKWALL, SOMMERVELL, TARRANT and WISE counties are in climate zone
3.2(MOIST).
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.
Also eliminated data not applicable in North Central Texas.)
Attachment B
Page 17 of 33
Proposed Ordinance 937 International Residential Code
***Amend Table N1101.2.1 to read as follows:
TABLE N1101.2.1 WARM HUMID COUNTIES FOR THE NCTCOG AREA
All of the NCTCOG area including COLLIN, DALLAS, DENTON, ELLIS, ERATH,
HOOD, HUNT JOHNSON, KAUFMAN, NAVARRO, PALO PINTO, PARKER,
ROCKWALL, SOMMERVELL, TARRANT and WISE counties are classified as Warm
Humid.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.
Also eliminated data not applicable in North Central Texas. )
***Amend Section N1102.1 Insulation and fenestration criteria. to read as follows:
1102.1 Insulation and fenestration criteria.
The building thermal envelope shall meet
the requirements of Table N1102.1 based on the climate zone specified in Table
N1101.2.
When compliance using Table 1102.1 is demonstrated with a ceiling R-value of R30 or
less, no more than 33% of the total projected ceiling area may be of cathedral type
construction (ceiling joist/roof rafter assembly) and the required insulation R-value may
be reduced to a minimum of R22 insulation when the remaining ceiling area insulation is
increased to R38.
(Reason: This amendment is compatible with the previous amendments increasing the number
of builders who could use the "simplified prescriptive" approach of the IRC and incorporates the
Home Builder Association prescriptive package proposal. The addition of “Ceiling Joist/Roof
Rafter Assembly” requirements protect such assemblies from the damage likely to occur if
greater amounts of insulation were attempted in such assemblies.)
***Amend Table N1102.1 to read as follows:
TABLE N1102.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
a
(SOUTHLAKE, TEXAS)
MAX MIN
GLAZED MASS SLAB MIN
R-
CLIMATE AREA TO MAX MAX WALL MIN MIN CRAWL
MIN WOOD
- SUB WALL GLAZED SKYLIGHT MAX GLAZED MIN R-FLOOR BASEMENT VALUE SPACE
FRAME WALL
U-R-
CLIMATE AREA FENESTRATION FENESTRATION CEILING VALUE WALL & WALL
d
bc
R-VALUE
U-FACTOR R-VALUE R-VALUE R-VALUE
ZONE RATIO FACTOR SHGC VALUE DEPTH
15 0.60 0.65 0.40 30 13 6 19 6 0 7
20 0.54 0.65 0.40 38 13 6 19 6 0 7
25 0.51 0.65 0.40 38 16, 13 + 7 19 6 0 7
e
3.2
3.7
30 0.46 0.65 0.38 38 16, 13 + 7 19 6 0 7
e
3.7
SEE NEXT PAGE FOR TABLE FOOTNOTES
For SI: 1 foot = 304.8 mm.
Attachment B
Page 18 of 33
Proposed Ordinance 937 International Residential Code
a. -values are minimums. -factors and SHGC are maximums. R-19 shall be permitted to be compressed into a 2 x 6
RU
cavity.
b. The fenestration -factor column excludes skylights. The SHGC column applies to all glazed fenestration.
U
c. R-5 shall be added to the required slab edge values for heated slabs.
R-
d. The total -value may be achieved with a combination of cavity insulation and insulating sheathing that covers 100% of
R
the exterior wall.
e. The wall insulation may be the sum of the two values where the first value is the cavity insulation and the second value is
insulating sheathing. The combination of cavity insulation plus insulating sheathing may be used where structural
sheathing covers not more than 25% of the exterior wall area and insulating sheathing is not required where structural
sheathing is used. If structural sheathing covers more than 25% of exterior wall area then the wall insulation requirement
may only be satisfied with the single insulation value.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.
Also eliminated data not applicable in Climate Zone 3.2.)
***Amend Table N1102.1.2 to read as follows:
TABLE N1102.1.2
a
EQUIVALENT U-FACTORS
MAX
MAX MAX CRAWL
CLIMATE - GLAZED MAX MASS MAX SPACE
SUB AREA TO GLAZED MAX MAX MAX WOOD WALL MAX BASEMENT WALL
U-U-FACTOR
CLIMATE WALL AREA FENESTRATION SKYLIGHT CEILING FRAME WALL FLOOR WALL
U-FACTOR U-FACTOR U-FACTOR U-FACTORU-FACTOR U-FACTOR
ZONE RATIO FACTOR
15 0.60 0.65 0.034 0.082 0.124 0.047 0.179 0.075
20 0.54 0.65 0.030 0.082 0.124 0.047 0.179 0.075
3.2
25 0.51 0.65 0.030 0.071 0.112 0.047 0.179 0.075
30 0.46 0.65 0.030 0.071 0.112 0.047 0.179 0.075
a. Nonfenestration -factors shall be obtained from measurement, calculation or an approved source.
U
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.
Also eliminated data not applicable in Climate Zone 3.2)
***Amend Section N1102.3.2 Glazed fenestration SHGC. to read as follows:
N1102.3.2 Glazed fenestration SHGC.
An area-weighted average of fenestration
products more than 50 percent glazed shall be permitted to satisfy the SHGC
requirements. The maximum area-weighted average and the maximum SHGC shall not
exceed 0.40.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77
Legislature.)
***Add Section N1102.2.11. Insulation installed in walls to read as follows:
N1102.2.11. Insulation installed in walls.
Insulation batts installed in walls shall be totally
surrounded by an enclosure on all sides consisting of framing lumber, gypsum, sheathing, wood
Attachment B
Page 19 of 33
Proposed Ordinance 937 International Residential Code
structural panel sheathing or other equivalent material approved by the building official.
(Reason: This will increase the performance of the batt insulation by eliminating the
potential for drafts and insure that the batt insulation stays in place)
***Amend Section N1102.3.3 Glazed fenestration exemption. to read as follows:
2
N1102.3.3 Glazed fenestration exemption.
Up to 15 square feet (1.4 m) 1 percent of
glazed fenestration per dwelling unit shall be permitted to be exempt from U-factor and
SHGC requirements in Section 402.1.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.)
***Amend Section N1102.3.5 Thermally isolated sunroom U-factor to read as
follows:
N1102.3.5 Thermally isolated sunroom -factor.
U For zones 4 through 8, the
maximum fenestration U-factor shall be 0.50 and the maximum skylight U-factor shall
be 0.75. New windows and doors separating the sunroom from conditioned space shall
meet the building thermal envelope requirements.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.)
***Amend Section N1102.3.6 Replacement fenestration to read as follows:
N1102.3.6 Replacement fenestration.
Where some or all of an existing fenestration
unit is replaced with a new fenestration product, including sash and glazing, the
replacement fenestration unit shall meet the applicable requirements for U-factor and
SHGC in Table N1102.1 N1102.3.7.
Exceptions:
1. Replacement skylights shall have a maximum U-factor for 0.60 when installed in all
sub climate zones except for 2.1.
2. For buildings constructed in conformance with an energy code as required by State of
th
Texas Senate Bill Number 5, 77 Legislature, replacement fenestration units may
comply with the original construction documents or applicable U-factor in Table
1102.1.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature
and to provide for reasonable compliance for structures built after the adoption of codes in
th
accordance with SB 5, 77 Legislature.)
Attachment B
Page 20 of 33
Proposed Ordinance 937 International Residential Code
***Add Section N1102.3.7 Prescriptive path for additions. to read as follows:
N1102.3.7 Prescriptive path for additions.
As an alternative to demonstrating
compliance, additions with a conditioned floor area less than 500 square feet (46.5 m2)
to existing single-family residential buildings and structures shall meet the prescriptive
envelope component criteria in Table N1102.3.7 for the sub climate zone applicable to
the location. The U-factor of each individual fenestration product (windows, doors and
skylights) shall be used to calculate and area-weighted average fenestration product U-
factor for the addition, which shall not exceed the applicable listed values in Table
N1102.3.7. For additions, other than sunroom additions, the total area of fenestration
products shall not exceed 40 percent of the gross wall and roof area of the addition.
The R-values for opaque thermal envelope components shall be equal to or greater
than the applicable listed values in Table N1102.3.7.
Conditioned sunroom additions shall maintain thermal isolation; shall not be used as
kitchens or sleeping rooms.
The combined solar heat gain coefficient (the area weighted average) of all glazed
fenestration products used in additions and as replacement windows in accordance with
this section shall not exceed 0.40.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.)
***Add Table N1102.3.7 PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA
ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING DETACHED ONE-
AND TWO-FAMILY DWELLINGS to read as follows:
Table N1102.3.7 PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA
ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING DETACHED
d
ONE- AND TWO-FAMILY DWELLINGS
MAXIMUM MINIMUM
SUB Basement Slab
CLIMATE Fenestration Ceiling wall perimeter R-Crawl space
a, d d b c
ZONE U-factor R-valueWall R-valueFloor R-value R-valuevalue wall R-value
3.2 0.50 R-30 R-13 R-19 R-8 R-0 R-10
a. “Ceiling -value” shall be required for flat or inclined (cathedral) ceilings. Floors over outside air shall meet “Ceiling -
RR
value” requirements.
b. Basement wall insulation to be installed in accordance with Section 402.2.6.
c. “Crawl space wall -value” shall apply to unventilated crawl spaces only. Crawl space insulation shall be installed in
R
accordance with Section 402.2.8.
d. Sunroom additions shall be required to have a maximum fenestration U-factor of 0.5. in all sub climate zones except sub
climate zone 2.1. In all sub climate zones, the minimum ceiling R-value for sunroom additions shall be R-19 and the
minimum wall R-value shall be R-13.
(Reason: This amendment is added to satisfy the “not less restrictive” requirement when
th
adopting subsequent editions of energy codes in accordance with Texas SB 5, 77 Legislature.)
Attachment B
Page 21 of 33
Proposed Ordinance 937 International Residential Code
**Section M1305.1.3; change to read as follows:
M1305.1.3 Appliances in attics.
Attics containing appliances requiring access shall
be provided . . . {bulk of paragraph unchanged} . . . from the opening to the appliance.
The passageway shall have continuous unobstructed solid flooring in accordance with
Chapter 5 not less than 24 30 inches (610 762 mm) wide. A level service space at
least 30 inches (762 mm) deep and 30 inches (762 mm) wide shall be present along all
sides of the appliance where access is required. 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 largest appliance. As a
minimum, access to the attic space shall be provided by one of the following:
1. A permanent stair.
2. A pull down stair.
3. An access door from an upper floor level.
4. Access panel may be used in lieu of items 1, 2 or 3 with prior approval of the
code official due to structural conditions.
Exception:
The passageway and level service space are not required where the
appliance is capable of being serviced and removed through the required
opening.
(Reason: To provide a safe means of accessibility to appliances in attics. Consistent with
regional amendments to IMC 306.3 and IFGC 306.3.)
**Section M1305.1.4.1; change to read as follows:
M1305.1.4.1 Ground clearance.
Appliances supported from the ground shall be level
and firmly supported on a concrete slab or other approved material extending above the
adjoining ground a minimum of 3 inches (76 mm). Appliances suspended from the floor
shall have a clearance of not less than 6 inches (152 mm) above the ground.
(Reason: Consistent with current local practice.)
**Section M1305.1.4.3; add a sentence to read as follows:
Low voltage wiring of 50 Volts or less shall be installed in a manner to prevent physical
damage.
(Reason: To require thermostat wires to be protected from damage.)
**Section M1502.3; delete and replace with the following:
M1502.3 Exhaust duct size.
The minimum diameter of the exhaust duct shall be as
recommended by the manufacturer, shall be at least the diameter of the appliance outlet
and shall be a minimum nominal size of 4 inches (102 mm) in diameter. The size of
duct shall not be reduced along its developed length nor at the point of termination.
(Reason: To clarify the size requirement.)
Attachment B
Page 22 of 33
Proposed Ordinance 937 International Residential Code
***Section M1502.6; change to read as follows:
M1502.6 Length limitation.
The maximum length of a clothes dryer exhaust duct shall
not exceed 25 feet (7620 mm) from the dryer location to the wall or roof termination with
not more than two bends. When extra bends are installed, the maximum length of the
duct shall be reduced 2.5 feet (762 mm) for each 45-degree (0.79 rad) bend and 5 feet
(1524 mm) for each 90-degree (1.6 rad) bend that occur after the first two bends,
measuring in the direction of airflow. The maximum length of the exhaust duct does not
include the transition duct. {Exception is unchanged}
(Reason: To make more consistent with regional practice. Dryer technology has improved to
the point where they should be capable of handling this.)
**Section M2005.2; change to read as follows:
M2005.2 Prohibited locations.
Fuel-fired water heaters shall not be installed in a
room used as a storage closet. Water heaters located in a bedroom or bathroom shall
be installed in a sealed enclosure so that combustion air will not be taken from the living
space. Access to such enclosure may be from the bedroom or bathroom when through
a solid door, weather-stripped in accordance with the exterior door air leakage
requirements of the International Energy Conservation Code and equipped with an
approved self-closing device. Direct-vent water heaters are not required to be installed
within an enclosure.
(Reason: Corresponds with the provisions of IFGC Section 303, exception #5.)
**Section G2403; amend definition of "Unvented Room Heater" to add a sentence
to read as follows:
For the purpose of installation, this definition shall also include "Unvented Decorative
Appliances."
(Reason: Clarifies installation for these devices.)
**Section G2408.3; delete.
(Reason: This provision does not reflect standard practice in this area.)
***Section 2408.4; change to read as follows:
2408.4 Clearances from grade.
Equipment and appliances installed at grade level
shall be supported on a level concrete slab or other approved material extending a
minimum of 3 inches (76 mm) above adjoining grade or shall be suspended a minimum
of 6 inches (152 mm) above adjoining grade.
(Reason: Consistent with current local practice. Consistent with regional amendments to other
codes and code sections.)
Attachment B
Page 23 of 33
Proposed Ordinance 937 International Residential Code
**Section G2412.5; add a second paragraph to read as follows:
G2412.5 (401.5) Identification.
For other than black steel pipe, exposed piping shall be
identified by a yellow label marked “Gas” in black letters. The marking shall be spaced
at intervals not exceeding 5 feet (1524 mm). The marking shall not be required on pipe
located in the same room as the equipment served.
Both ends of each section of medium pressure gas pipe or tubing shall identify its
operating gas pressure with an approved tag. The tags are to be composed of
aluminum or stainless steel and the following wording shall be stamped into the tag:
"WARNING
1/2 to 5 psi gas pressure
Do Not Remove"
(Reason: To protect homeowners and plumbers.)
**Section G2413.3; add an exception to read as follows:
Exception:
Corrugated stainless steel tubing (CSST) shall be a minimum of
1/2".
(Reason: Pipe less than 1/2" has a history in this region of causing whistling.)
**Section G2415.9; change to read as follows:
G2415.9 (404.9) Minimum burial depth.
Underground piping systems shall be
installed a minimum depth of 12 18 inches (305 458 mm) below grade, except as
provided for in Section G2415.9.1.
(Reason: To provide increased protection to piping systems.)
**Section G2415.9.1; delete.
(Reason: Individual lines should also be buried to 18 inches.)
**Section G2417.1; change to read as follows:
G2417.1 (406.1) General.
Prior to acceptance and initial operation, all piping
installations shall be inspected and pressure tested to determine that the materials,
design, fabrication, and installation practices comply with the requirements of this code.
The permit holder shall make the applicable tests prescribed in Sections 2417.1.1
through 2417.1.5 to determine compliance with the provisions of this code. The permit
holder shall give reasonable advance notice to the code official when the piping system
is ready for testing. The equipment, material, power and labor necessary for the
inspections and test shall be furnished by the permit holder and the permit holder shall
be responsible for determining that the work will withstand the test pressure prescribed
in the following tests.
(Reason: To utilize language used in the IPC regarding who is responsible for testing
procedures.)
Attachment B
Page 24 of 33
Proposed Ordinance 937 International Residential Code
**Section G2417.4; change to read as follows:
G2417.4 (406.4) Test pressure measurement.
Test pressure shall be measured with
a monometer or with a pressure-measuring device designed and calibrated to read,
record, or indicate a pressure loss caused by leakage during the pressure test period.
The source of pressure shall be isolated before the pressure tests are made.
(Reason: To require the use of more accurate diaphragm gauges. Spring gauges do
not provide accurate measurement below approximately 17 psig.)
**Section G2417.4.1; change to read as follows:
G2417.4.1 (406.4.1) Test pressure. The test pressure to be used shall be not less
than one and one-half times the proposed maximum working pressure, but not less than
3 3 psig (20 kPa gauge), or at the discretion of the Code Official, the piping and valves
may be tested at a pressure of at least six (6) inches (152 mm) of mercury, measured
with a manometer or slope gauge. irrespective of design pressure. Where the test
pressure exceeds 125 psig (862 kPa gauge), the test pressure shall not exceed a value
that produces a hoop stress in the piping greater than 50 percent of the specified
minimum yield strength of the pipe. For tests requiring a pressure of 3 psig, mechanical
gauges used to measure test pressures shall utilize a dial with a minimum diaphragm
diameter of three and one half inches (3 ½”), a set hand, 1/10 pound incrementation
and pressure range not to exceed 6 psi for tests requiring a pressure of 3 psig. For
tests requiring a pressure of 10 psig, mechanical diaphragm gauges shall utilize a dial
with a minimum diameter of three and one-half inches (3 ½”), a set hand, a minimum of
2/10 pound incrementation and a pressure range not to exceed 20 psi. have a range
such that the highest end of the scale is not greater than five times the test pressure.
For welded piping, and for piping carrying gas at pressures in excess of fourteen (14)
inches water column pressure (3.48 kPa) (1/2 psi) and less than 200 inches of water
column pressure (52.2 kPa) (7.5 psi), the test pressure shall not be less than ten (10)
pounds per square inch (69.6 kPa). For piping carrying gas at a pressure that exceeds
200 inches of water column (52.2 kPa) (7.5 psi), the test pressure shall be not less than
one and one-half times the proposed maximum working pressure.
(Reason: To provide for lesser pressures to coordinate with the use of more accurate
diaphragm gauges.)
**Section G2417.4.2; change to read as follows:
G2417.4.2 (406.4.2) Test duration.
The test duration shall be held for a length of time
satisfactory to the Code Official, but in no case for be not less than 10 fifteen (15)
minutes. For welded piping, and for piping carrying gas at pressures in excess of
Attachment B
Page 25 of 33
Proposed Ordinance 937 International Residential Code
fourteen (14) inches water column pressure (3.48 kPa), the test duration shall be held
for a length of time satisfactory to the Code Official, but in no case for less than thirty
(30) minutes.
(Reason: To comply with accepted regional practices.)
**Add Section G2420.1.4 to read as follows:
G2420.1.4 Valves in CSST installations.
Shutoff valves installed with corrugated
stainless steel (CSST) piping systems shall be supported with an approved termination
fitting, or equivalent support, suitable for the size of the valves, of adequate strength
and quality, and located at intervals so as to prevent or damp out excessive vibration
but in no case greater than 12-inches from the center of the valve. Supports shall be
installed so as not to interfere with the free expansion and contraction of the system's
piping, fittings, and valves between anchors. All valves and supports shall be designed
and installed so they will not be disengaged by movement of the supporting piping.
(Reason: To provide proper security to CSST valves. These standards were established in this
region in 1999 when CSST was an emerging technology.)
**Section G2421.1; add a second paragraph and exception to read as follows:
G2421.1 (410.1) Pressure regulators.
A line pressure regulator shall be installed
where the appliance is designed to operate at a lower pressure than the supply system.
Access shall be provided to pressure regulators. Pressure regulators shall be protected
from physical damage. Regulators installed on the exterior of the building shall be
approved for outdoor installation.
Access to regulators shall comply with the requirements for access to appliances as
specified in Section M1305.
Exception:
A passageway or level service space is not required when the
regulator is capable of being serviced and removed through the required attic
opening.
(Reason: To require adequate access to regulators.)
**Section G2439.5; add a sentence to read as follows:
The size of duct shall not be reduced along its developed length nor at the point of
termination.
(Reason: To clarify the size requirement.)
**Section G2439.5.1; add a second exception as follows:
G2439.5.1 (614.6.1) Maximum length.
The maximum length of a clothes dryer exhaust
duct shall not exceed 25 feet (7620 mm) from the dryer location to the outlet terminal
with not more than two bends. When extra bends are installed, the maximum length of
the duct shall be reduced 2 1/2 feet (762 mm) for each 45-degree (0.79 rad) bend and 5
Attachment B
Page 26 of 33
Proposed Ordinance 937 International Residential Code
feet (1524 mm) for each 90-degree (1.6 rad) bend that occur after the first two bends,
measuring in the direction of airflow.
Exception:
Where the make and model of the clothes dryer to be installed is
known and the manufacturer’s installation instructions for such dryer are provided
to the code official, the maximum length of the exhaust duct, including any
transition duct, shall be permitted to be in accordance with the dryer
manufacturer’s installation instructions, and provided that a 4 inch by 6 inch sign
red in color with white letters is permanently affixed to the structure stating the
following:
Warning: Dryer must be approved for vent length not to exceed 40 feet
Total Developed Length (TDL).
Duct Size: (Number)
Total Developed Length: (Number)
(Reason: has improved to the point where a large number of makes and models of
dryers are capable of handling greater dryer vent length.)
**Section G2445.2; change to read as follows:
G2445.2 (621.2) Prohibited use.
One or more unvented room heaters shall not be
used as the sole source of comfort heating in a dwelling unit.
Exception:
Existing approved unvented heaters may continue to be used in
dwelling units, in accordance with the code provisions in effect when installed,
when approved by the Code Official unless an unsafe condition is determined to
exist as described in International Fuel Gas Code Section 108.7.
(Reason: Gives code official discretion.)
**Section P2503.5.1, item 1; add a second paragraph to read as follows:
P2503.5.1 Rough plumbing.
DWV systems shall be tested on completion of the rough
piping installation by water or air with no evidence of leakage. Either test shall be
applied to the drainage system in its entirety or in sections after rough piping has been
installed, as follows:
1. Water test. Each section shall be filled with water to a point not less than 10 feet
(3048 mm) above the highest fitting connection in that section, or to the highest point in
the completed system. Water shall be held in the section under test for a period of 15
minutes. The system shall prove leak free by visual inspection.
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.
2. Air test. The portion under test shall be maintained at a gauge pressure of 5 pounds
per square inch (psi) (34 kPa) or 10 inches of mercury column (2488 Pa). This pressure
shall be held without introduction of additional air for a period of 15 minutes.
(Reason: To clarify that a water test is required for a shower receptor.)
**Section P2503.7.2; change to read as follows:
Attachment B
Page 27 of 33
Proposed Ordinance 937 International Residential Code
P2503.7.2 Testing.
Reduced pressure principle . . . {bulk of section unchanged} . . . at
the time of installation, immediately after repairs or relocation and at regular intervals as
required by the Cross Connection Control Policy, Ordinance No. 699. least annually.
(Reason: Recognize TECQ or other local testing procedures that must be adhered to.)
**Section P2603.6.1; change to read as follows:
P2603.6.1 Sewer depth.
Building sewers that connect to private sewage disposal
systems shall be a minimum of twelve (12) inches (304 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.)
Section P2709.1; add an exception to read as follows:
Exception:
Showers designed to comply with ICC/ANSI A117.1.
**Section P2801.6; add an exception as follows:
Exception:
1. Elevation of the ignition source is not required for water heaters that are listed
as flammable vapor resistant and for installation without elevation.
2. Electric Water Heater
(Reason: To coordinate with Section 2408.2 of the IRC, which recognizes this
exception.)
***Section P2902.4.3; changed to read as follows:
P2902.5.3 Lawn irrigation systems.
The potable water supply to lawn irrigation systems shall be protected against backflow
by an atmospheric-type vacuum breaker, a pressure-type vacuum breaker , a double-
check assembly or a reduced pressure principle backflow preventer. A valve shall not
be installed downstream from an atmospheric vacuum breaker. Where chemicals are
introduced into the system, the potable water supply shall be protected against backflow
by a reduced pressure principle backflow preventer.
(Reason: To provide another option.)
**Tables P2904.4, P2904.5 and P2904.6; delete "Polybutylene (PB) plastic pipe,
tubing and fittings".
**Sections P2904.5, 2904.5.1 and 2904.15; delete reference to "PB" plastic pipe.
Attachment B
Page 28 of 33
Proposed Ordinance 937 International Residential Code
(Reason: Polybutylene pipe is not allowed for use in this region.)
Section P3005.2.6; changed to read as follows:
P3005.2.6 Upper terminal Base of stacks.
Each horizontal drain shall be provided
with a cleanout at its upper terminal Accessible cleanouts shall be provided near the
base of each vertical waste or soil stack. Alternatively, such cleanouts may be installed
outside the building within 3 feet (914 mm) of the building wall.
Exception:
Cleanouts may be omitted on a horizontal drain less that five (5) feet
(1524 mm) in length unless such line is serving sinks or urinals.
(Reason: To eliminate the requirement for excessive cleanouts.)
Section P3103.1; changed to read as follows:
P3103.1 Roof extension.
All open vent pipes which extend through a roof shall be
terminated at least six (6) inches (152 mm) above the roof or [number] inches above the
anticipated snow accumulation, except that . . . {remainder of section unchanged}.
(Reason: To provide regional guideline on standard installation method for this area.)
Sections P3105.2; change to read as follows:
P3105.2 Fixture drains.
The total fall in a fixture drain due to pipe slope shall not
exceed one pipe diameter, nor shall the vent pipe connection to a fixture drain, except
for water closets, be below the weir of the trap, except as provided in Section P3105.3.
***Section P3111; delete.
(Reason: A combination waste and vent system is not approved for use in residential
construction.
***Section P3112.2; delete and replace with the following:
P3112.2 Installation.
Traps for island sinks and similar equipment shall be
roughed in above the floor and may be vented by extending the vent as high as
possible, but not less than the drainboard height and then returning it downward
and connecting it to the horizontal sink drain immediately downstream from the
vertical fixture drain. The return vent shall be connected to the horizontal drain
through a wye-branch fitting and shall, in addition, be provided with a foot vent
taken off the vertical fixture vent by means of a wye-branch immediately below
the floor and extending to the nearest partition and then through the roof to the
open air or may be connected to other vents at a point not less than six (6)
inches (152 mm) above the flood level rim of the fixtures served. Drainage
fittings shall be used on all parts of the vent below the floor level and a minimum
slope of one-quarter (1/4) inch per foot (20.9 mm/m) back to the drain shall be
maintained. The return bend used under the drainboard shall be a one (1) piece
Attachment B
Page 29 of 33
Proposed Ordinance 937 International Residential Code
fitting or an assembly of a forty-five (45) degree (0.79 radius), a ninety (90)
degree (1.6 radius) and a forty-five (45) degree (0.79 radius) elbow in the order
named. Pipe sizing shall be as elsewhere required in this Code. The island sink
drain, upstream of the return vent, shall serve no other fixtures. An accessible
cleanout shall be installed in the vertical portion of the foot vent.
(Reason: To clarify the installation of island venting and to provide a regional guideline
on a standard installation method for this region.)
***Section P 3114.3: Amend to read as follows:
P3114.3 Where permitted.
Individual vents, branch vents, circuit vents and stack vents
serving kitchen island sinks or bar sinks shall be permitted to terminate with a
connection to an air admittance valve. All other installations shall require prior approval
of the Building Official.
(Reason: Language consistent with current procedure to allow AAV’s with advance approval.)
**Chapters 33 through 42; delete. Replace with the electrical code as adopted.
Note:
Chapters 33 through 42 are based on the 2005 National Electrical Code and are
included here for reference only. The 2008 National Electrical Code as adopted by
separate ordinance takes precedence over these sections.
**Appendix G; Change section AG105 as follows:
AG105.2 Outdoor swimming pool.
An outdoor swimming pool, including an
in-ground, aboveground or on-ground pool, hot tub or spa shall be provided
with a barrier which shall comply with the following:
1. The top of the barrier shall be at least 48 inches (1219 mm) above grade
measured on the side of the barrier which faces away from the swimming
pool. The maximum vertical clearance between grade and the bottom of the
barrier shall be 2 inches (51 mm) measured on the side of the barrier which
faces away from the swimming pool. Where the top of the pool structure is
above grade, such as an aboveground pool, the barrier may be at ground
level, such as the pool structure, or mounted on top of the pool structure.
Where the barrier is mounted on top of the pool structure, the maximum
vertical clearance between the top of the pool structure and the bottom of the
barrier shall be 4 inches (102 mm).
Pre-existing fences
. The installation of a swimming pool creates the
requirement for the barrier fence. A previously existing fence would not have
any status under this section because the addition of the pool creates the
hazard on which the code section is based. The one exception to this general
rule is when the fence on one side of the new pool is already a pool enclosure
Attachment B
Page 30 of 33
Proposed Ordinance 937 International Residential Code
for the adjacent property. That fence segment which is common to another
yard with a pool is a legal nonconforming pool enclosure and need not be
upgraded. Any other existing fence that is just now becoming a pool
enclosure shall comply with this section.
2. Openings in the barrier shall not allow passage of a 4-inch-diameter (102 mm)
sphere.
3. Solid barriers which do not have openings, such as a masonry or stone wall,
shall not contain indentations or protrusions except for normal construction
tolerances and tooled masonry joints.
4. Where the barrier is composed of horizontal and vertical members and the
distance between the tops of the horizontal members is less than 45 inches
(1143 mm), the horizontal members shall be located on the swimming pool side
of the fence. Spacing between vertical members shall not exceed 1.75 inches (44
mm) in width. Where there are decorative cutouts within vertical members,
spacing within the cutouts shall not exceed 1.75 inches (44 mm) in width.
5. Where the barrier is composed of horizontal and vertical members and the
distance between the tops of the horizontal members is 45 inches (1143 mm) or
more, spacing between vertical members shall not exceed 4 inches(102 mm).
Where there are decorative cutouts within vertical members, spacing within the
cutouts shall not exceed 1.75 inches (44 mm) in width.
EXCEPTION:
When horizontal members are part of a fence that is at least 6
feet (1830 mm) in height, the horizontal members need not be on the pool side
of the barrier and the 45 inch distance between horizontal members does not
apply.
6. Maximum mesh size for chain link fences shall be a 2.25-inch (57 mm) square
unless the fence is provided with slats fastened at the top or the bottom which
reduce the openings to not more than 1.75 inches (44 mm).
7. Where the barrier is composed of diagonal members, such as a lattice fence,
the maximum opening formed by the diagonal members shall not be more than
1.75 inches(44 mm).
8. Access gates shall comply with the requirements of Section AG105.2, Items 1
through 7, and shall be equipped to accommodate a locking device. Pedestrian
access gates shall open outward away from the pool and shall be self-closing
and have a self-latching device. Gates other than pedestrian access shall have a
self-latching device be equipped with lockable hardware or padlocks and shall
remain locked at all times when not in use.
Where the release mechanism of the self-latching device is located less than 54
inches (1372 mm) from the bottom of the gate, the release mechanism and
openings shall comply with the following:
Attachment B
Page 31 of 33
Proposed Ordinance 937 International Residential Code
8.1. The release mechanism shall be located on the pool side of the gate at
least 3 inches (76 mm) below the top of the gate, and
8.2. The gate and barrier shall have no opening greater than 0.5 inch (12.7
mm) within 18 inches (457 mm) of the release mechanism.
Vehicle gates designed or intended to be used on a regular basis may be
automatic closing rather than maintained locked. Automatic gates may be
opened by a key or switch (fixed or remote) but the gate shall automatically close
within one to two minutes without requiring any additional action on the part of
the person who opened it.
9. Where a wall of a dwelling serves as part of the barrier one of the following
conditions shall be met:
9.1. The pool shall be equipped with a powered safety cover in compliance
with ASTM F1346; or
9.2. All doors with direct access to the pool through that wall shall be
equipped with an alarm which produces an audible warning when the door
and its screen, if present, are opened. The alarm shall sound continuously for
a minimum of 30 seconds immediately after the door is opened and be
capable of being heard throughout the house during normal household
activities. The alarm shall automatically reset under all conditions. The alarm
system shall be equipped with a manual means, such as touchpad or switch,
to temporarily deactivate the alarm for a single opening. Such deactivation
shall last for not more than 15 seconds. The deactivation switch(es) shall be
located at least 54 inches (1372 mm) above the threshold of the door; or
9.3. Other means of protection, such as self-closing doors with self-latching
devices, which are approved by the governing body, shall be acceptable so
long as the degree of protection afforded is not less than the protection
afforded by Item 9.1 or 9.2 described above
10. Where an aboveground pool structure is used as a barrier or where the
barrier is mounted on top of the pool structure, and the means of access is a
ladder or steps, then:
10.1. The ladder or steps shall be capable of being secured, locked or
removed to prevent access, or
10.2. The ladder or steps shall be surrounded by a barrier which meets the
requirements of Section AG105.2, Items 1 through 9. When the ladder or
steps are secured, locked or removed, any opening created shall not allow
the passage of a 4-inch-diameter (102 mm) sphere.
(Reason: To allow for special conditions while retaining essentially the same degree of safety.)
Attachment B
Page 32 of 33
Proposed Ordinance 937 International Residential Code
***Appendix P; Amend section AP 101 and add AP101.1 as follows:
AP101 Fire sprinklers.
An approved automatic fire sprinkler system shall be installed in
new one- and two-family dwellings and townhouses in accordance with Section 903.3.1
of the International Building Code.
EXCEPTION:
Dwellings containing less than 6000 square feet enclosed space.
For upper level attic type rooms, areas where the ceiling height is less than five
feet (5’ 0”) shall not be considered. Unfinished space framed to permit future
expansion of floor area shall be considered as part of the area. Joists designed
to support floor loads shall be assumed to be for future area. (living area plus
garages and any other enclosed spaces but not open porches or patios).
AP101.1 Existing dwellings.
An approved automatic fire sprinkler system shall be
installed in existing dwellings in accordance with Section 903.3.1 of the International
Building Code when the existing dwelling plus the proposed addition exceeds 6000
square feet enclosed space (living area plus garages and any other enclosed spaces
but not open porches or patios).
Exception:
Existing unfinished space under roof (e.g. bonus space in attic) may
be converted to living area unless the existing dwelling is already sprinklered,
then the protection shall be extended to include the new area.
END OF AMENDMENTS.
Attachment B
Page 33 of 33
Proposed Ordinance 937 International Residential Code