Arizona's governors forest health oversight council zoning and implementation subcommittee: part one template zoning and building wildland interface codes

              Arizona Governor's
Forest Health Oversight Council
Zoning and Implementation
Subcommittee
Part One
Template Zoning and Building
Wildland Interface Codes
September 2003 Edition
Arizona Governor's
Forest Health Oversight Council
Zoning and Implementation
Subcommittee
Part One
Template Zoning and Building
Wildland Interface Codes
September 2003 Edition
GRAPHIC COMPANION
FOR THE
INTERNATIONAL URBAN WILDLAND
INTERFACE CODE
FOR
PIMA COUNTY ARIZONA
7/ 18/03 1 URBAN WILDLAND INTERFACE CODE .
This is a graphic representation of the major provisions of the International
Urban Aildland Interface Code proposed by Pima County. This is based on the
written SECOND draft and is meant as t o tool to discuss the various
requirements of the Code. Keep in mind that what follows is subect to change.
Also keep in mind that this is based on what is written and may not reflect your
understanding of previous discussions.
The various details provided are by no means the only ones that will be permitted
by this code and are provided to convey the concepts in the code. Also your site
may have unique problems, provisions have been made to modify these
requirements on a case by case basis.
Rick Bright, AIA
FIRE APPARATUS ACCESS ROAD
DRIVEWAYS
DRIVE TURNAROUND AND TURNOUT
WATER SUPPLY
CONSTRUCTION REQUIREMENTS
DEFENSIBLE SPACE
WALL SECTION 1
WALL SECTION 2
WALL SECTION 3
CONSTRUCTION MATERIALS
OPENING ELEVATION
ROOF SOFFIT OVERHANG DETAILS
EXPOSED ROOF OVERHANG
HEAVY TIMBER CONSTRUCTION
PORCH DECKS
URBAN WILDLAND INTERFACE CODE . .
REQUIREMENTS
1. 20' MINIMUM NIDTH
2. 1 3'-6" HEIGHT CLEARANCE
3. ALL YVEATHER ACCESS (PAVED) OR AS DETERMINED BY CODE
OFFICIAL
4. 12% MAXIMUM GRADE
5. NO DEADENDS GREATER THAN 1 50 FEET NlTH OUT TURNAROUND
IFC EXCEPTION ( 5 0 3 ) CAN BE INCREASED
A. BUILDING FIRESPRINKLERED
B. ALTERNATE MEANS PROVIDED NHEN INFEASIBLE
C. NOT MORE THAN 2 R-3 OR U OCCUPANCIES
6. TURNING RADIUS A5 DETERMINED BY CODE OFFICIAL
7. STREET IDENTIFICATION
8. PREMISE IDENTIFICATION
20' - 0" i // //
FIRE APPARATUS ACCE55 ROAD
NTS
7/ 1 8 / 0 3
a URBAN WILDLAND INTERFACE CODE 1
a - - . p-ppp. -- - - -
DRIVE REQUIRED HHEN ANY PORTION
OF EXTERIOR HALL 15 GREATER THAN
1 i 50'
1
REQUIREMENT5
1. 1 2' MINIMUM HlDTH
2. 13'-6" HEIGHT CLEARANCE
3. ALL HEATHER ACCESS A5 DETERMINED BY CODE OFFICIAL
4. MAXIMUM GRADE PERMITTED AS DETERMINED BY CODE OFFICIAL
5. N O DEADENDS GREATER THAN 1 50 FEET HITH OUT TURNAROUND
6. N O DEADENDS GREATER THAN 200 FEET HITHOUT TURNOUT IN
I ADDITION TO TURNAROUND
6. TURNING RADIUS A5 DETERMINED BY CODE OFFICIAL 1 7. CAN NOT SERVE MORE THAN 3 RESIDENCES
4'
, !/
-1' -
8 . VEHICLE LOAD LIMIT5 POSTED FOR BRIDGES TO DRIVEHAYS AND
- PRIVATE ROADS
NT5 7/ 1 8 / 0 3 $ URBAN WILDLAND INTERFACE CODE 2
LE55 THAN 1 50' - 0"
/-7/
DRIVE
GREATER THAN 1 50' - 0"
// J
DRIVE
DRIVE
TURNOUT LOCATION
' DRIVE TURNAROUND AND TURNOUT
NTS
e
7/ 18/03
URBAN WILDLAND INTERFACE CODE 3
REQUIREMENTS
I . HATERSOURCE HITHIN 1000 FEET FROM BUILDING
2. ADEQUATE HATER SUPPLY
a. 1-2 FAMILY DHELLINGS
<3600 S.F. 1000 GALLON PER MINUTE FOR 30 MINUTES
>3600 S.F. 1500 GALLON5 PER MINUTE FOR 30 MINUTES
FLOH RATE CAN BE REDUCED 5 0 % HITH APPROVED AUTOMATIC
FIRE SPRINKLERS AND APPROVAL BY CODE OFFICIAL.
b. OTHER
1 500 GALLON5 PER MINUTE FOR 2 HOURS
FLOH RATE CAN E3E REDUCED 7 5% HITH APPROVED AUTOMATIC
FIRE SPRINKLERS AND MINIMUM 1 5 0 0 GPM AND APPROVAL OF
CODE OFFICIAL
IcrlATER SUPPLY
•
e
a
NTS
7/ 18/03
URBAN WILDLAND INTERFACE CODE 4
FlRE HAZARD SEVERITY
E EXTREME HAZARD
4 H HIGH HAZARD
1 MMODERATEHAZARD FlRE HAZARD SEVERITY MAP E i E T E T E t E
i
PREPARED BY COUNTY
Street LOT
TABLE 503.1 IGNITION RESISTANT CONSTRUCTION
1 1.5 XConforming Not Req 1
DEFENSIBLE SPACE
Nonconforming
IGNITION RESISTANT CONSTRUCTION COMPARISON
Conforming IR3 IR 2 lR2 IR 1 IR 1 I I I I I I I N 0 I
IR 1
FIRE HAZARD SEVERITY
NTS
CLASS 1 CLASS 2 CLASS 3
URBAN WILDLAND INTERFACE CODE
Moderate Hazard
Hater Supply
ROOFING
EAVE PROTECTION
NONCOMBUSIBALE GUTTERS
1 -HR EXTERIOR HALLS
UNDER FLOOR PROTECTION
"RATED" EXTERIOR GLASS
"RATED" EXTERIOR DOOR
PROTECTED VENTS
Conforminq
IR2
Noriconforminq
IF? 1
Hiqh Hazard
Hater Supply
CONSTRUCTION REQUIREMENTS
A
X
X
X
X
X
x
X
Conforminq
IR 1
Extreme Hazard
Hater Suppl
Noriconforminq Conforminq Nonco;forminq.
IR 1
NC
IR 1
NC
B
X
X
X
X
X
X
X
7GFFKK3
C
X
X
DEFENSIBLE SPACE
1. 1 0 FOOT MINIMUM DEFENSIBLE SPACE OR DISTANCE TO PROPERTY LINE
2. DEFENSIBLE SPACE FOR USE IN TABLE 5 0 3 . 1 MUST MEET MINIMUM
DISTANCES IN TABLE 603.2
3. ANY OF THESE REQUIREMENTS CAN BE MODIFIED BY THE FIRE DISTRICT
5O'X 1 0 0 ' LOT CAN NOT
MEET DEFENSIBLE
SPACE REQUIREMENTS
OF TABLE 5 0 3 . 1
DEFENSIBLE SPACE
TABLE 6 0 3 . 2
REQUIRED DEFENSIBLE SPACE
NTS
UP41 AREA
MODERATE
HIGH
EXTREME
URBAN WILDLAND INTERFACE CODE 6
FUEL MODIFICATION DISTANCE
3 0'
5 0'
1 0 0 ' 1
r CLASS A ROOFING
+ 9 HALL SECTION 1 IRC 1
ATTIC OR FOUNDATION VENTILATION
NOT TO EXCEED 144 SQ. IN. EACH
COVERED HITH NONCOME3UTIBLE
CORROSION RESISTIVE MESH HITH
OPENINGS NOT TO EXCEED 1 /4"
NO EAVE VENTS PERMITTED
NON COMBUSTIBLE
GUTTERS
2X FASCIA
EXTERIOR DOORS
1 3/4" SOLID CORE OR 1 HR SOFFIT
20 MIN. RATED~
VEHICLE ACCESS DOORS
EXCEPTED 1 HR RATED
CONSTRUCTION O N
EXTERIOR SIDE OF
HALL FROM
FOUNDATION TO
EXTERIOR HINDOHS/SKYLIGHTS ROOF DECK
TEMPERED GLASS OR
MULTILAYERED GLASS PANELS
OR
GLASS BLOCK OR
20 MINUTE RAT 2X DECK AND
RAILING
MATERIAL
I
I
i, URBAN WILDLAND INTERFACE CODE 7
=;
HEAVY TIMBER
CONSTRUCTION
SEE SHEET 14
1
r CLASS A ROOFING
ATTIC OR FOUNDATION VENTILATION
NOT TO EXCEED 144 5Q. IN. EACH
COVERED YVlTH NONCOMBUTIBLE CORROSION
RESISTIVE MESH YVlTH OPENING5 NOT TO
EXCEED 1 /4"
NO EAVE OVERHANG VENTS
PERMITTED
NON COMBUSTIBLE GUTTERS
2X FASCIA
EXTERIOR DOORS 2X FRAMING
1 3/4" SOLID CORE OR
20 MIN. RATED 1 HR UNDERSIDE OF ROOF DECK
VEHICLE ACCESS DOORS EXCEPTED
\ 1 HR RATED
CONSTRUCTION ON
EXTERIOR SIDE OF
YVALL FROM FLOOR
TO ROOF DECK
EXTERIOR YVINDOYVS/SKYLIGHTS
TEMPERED GLASS OR I
MULTILAYERED GLASS PANELS OR
GLASS BLOCK OR
20 MINUTE RATED
I I
1 HR RATED OR HEAVY
TIMBER CONSTRUCTION
NTS
7 / 18/03
URBAN WILDLAND INTERFACE CODE 8
,- CLASS A ROOFING
ATTIC OR FOUNDATION VENTILATION
NOT TO EXCEED 1 4 4 SQ. IN. EACH
COVERED WITH NONCOMBUTIBLE
CORROSION RESISTIVE MESH WITH
OPENINGS NOT TO EXCEED 1 /4"
NO EAVE VENTS PERMITTED
NON COMBUSTIBLE
GUTTERS
2X FASCIA
EXTERIOR DOORS
1 3/4" SOLID CORE OR 1 HR SOFFIT
2 0 MIN. RATED I
VEHICLE ACCESS DOORS
EXCEPTED 1 HR RATED
CONSTRUCT1
WALL FROM
FOUNDATION TO
EXTERIOR WINDOWS/SKYLIGHTS
TEMPERED GLASS OR
MULTILAYERED GLASS PANELS
OR
GLASS BLOCK OR
2 0 MINUTE RA 2X DECK AND
MATERIAL
HALL SECTION 3 IRC 1
NTC 7/ 18/03
URBAN WILDLAND INTERFACE CODE 9 l .I
CLASS A ROOFING
PERMITTED IN CODE YVITHOUT ADDITIONAL DOCUMENTATION
(YVITH FIRESTOPPED EAVE)
BRICK
MASONRY
SLATE
CLAY OR CONCRETE ROOF TILES
EXPOSED CONCRETE DECK
FERROUS OR COPPER SHINGLES OR SHEETS
1 APPROVED NITH ADDITIONAL DOCUMENTATION
ASPHALT/ FIBERGLASS SHINGLES
HOOD SHINGLE5/5HAKES
3 PLY B.U. ROOF/MEMBRANE ROOFING
1 HOUR EXTERIOR WALL
PERMITTED IN CODE HITHOUT ADDITIONAL
DOCUMENTATION
5/8" TYPE 'X' GYPSUM SHEATHING EXTERIOR CLADDING TO
BE ATTACHED THROUGH SHEATHING TO STUDS
7/8" 3 COAT CEMENT STUCCO
HEAVY TIMBER CONSTRUCTION (6x6 OR LARGER)
1 HOUR FLOOR
PERMITTED IN CODE HITHOUT ADDITIONAL
DOCUMENTATION
5/8" TYPE 'Xi GYPSUM SHEATHING EXTERIOR CLADDING TO
BE ATTACHED THROUGH SHEATHING TO JOISTS
7/8" 3 COAT CEMENT STUCCO
HEAVY TIMBER CONSTRUCTION (6x6 OR LARGER)
NTS
URBAN WILDLAND INTERFACE CODE 10
GARAGE
DOORS NOT
// REQUIRED TO
/
/ BE RATED
/
0'
METAL OR 1 3/4" 7
HOOD FRAME OR
20 MIN LABEL
% TEMPERED
OPENING ELEVATION
DUAL PANE OR
TEMPERED GLA5S OR
20 MINUTE LABEL
GLASS
NTS
URBAN WILDLAND INTERFACE CODE 11
r CLASS A ROOF
ANY ROOF COVERING YIHICH
ALLOYIS A SPACE BETUEEEN
THE ROOF COVERING AND
ROOF DECK SHALL BE
FIRESTOPPED.
YIOOD SIDING O N
5/8" TYPE 'X' GYP
SHEATHING.
ROOF OVERHANG NTH SOFFIT
(Preferred Method) : NTS
a
ANY ROOF COVERING UHlCH
ALLOYIS A SPACE BETHEEEN
THE ROOF COVERING AND
ROOF DECK SHALL BE
FIRESTOPPED.
CLASS A ROOFING
/-- 5/8" APA SHEATHING A //,- 5/B8' TYPE X GYPSUM
\ / SHEATHING
p-2X FASCIA
HOOD SIDING
lr\100D SIDING O N 5/8"
TYPE 'X' GYPSUM
SHEATHING
ROOF OVERHANG NTH SOFFIT
.) URBAN WILDLAND INTERFACE CODE
(E
CLASS++ ROOFING ANY ROOF COVERING HHICH
ALLOHS A SPACE BETHEEEN
- I ,- 5/8" APA RATED TRHOEO RFO DOEFC KCO SVHEARLILN BGE A ND
SHEATHING FIRESTOPPED.
5/8" FIRETREATED
RATED SHEATHING
2X FASCIA
APA
HOOD SIDING O N 5/8"
TYPE 'X' GYPSUM
SHEATHING
EXPOSED ROOF OVERHANG
NTS
ANY ROOF COVERING HHICH
ALLOHS A SPACE BETHEEEN
THE ROOF COVERING AND
ROOF DECK SHALL BE
FIRESTOPPED.
CLASS A ROOFING
2x DECKING
2X FASCIA
HOOD SIDING O N 5/23"
TYPE 'X' GYPSUM
SHEATHING
2% EXPOSED DECKING
NTS
d I URBAN WILDLAND INTERFACE CODE 13
(I,
2 X DECKING OR 5/8"
FIRERATED APA SHEATHING
- 3x6 MIN ROOF
A - L - ! ~6x 1 0B EAMS MIN. +
COLUMNS MIN.
DECKING MIN
I ,,/ 1 / 6x 1 0 BEAMSMIN.
3 X 1 0 MIN 1,- 6x6 COLUMNS MIN
FLOOR JOIST
I Z1 I I 1- CONC FOUNDATION
HEAVY TIMBER CONSTRUCTION
NTS
7/ 1 8 / 0 3
URBANWILDLANDINTERFACECODE 14
CONCRETE
PLYYVOOD
1 HR. YVRAP:
3 COAT STUCCO OR
5/8" TYPE X
SHEATHING YV/
SIDING
1 HR. HRAP FLOORING
NTS
SIDING
5/8" TYPE 'X'
GYPSUM
SHEATHING
I 1 7 1 I I-- ' ' _ I
2% DECKING A/ SIDING
NTS 7/ 18/03
URBAN WILDLAND INTERFACE CODE 15
Board Supervisors Memorandum
Subject: Co19-03-01 page 1 of 2
FOR AUGUST 11.2003 MEETING OF THE BOARD OF SUPERVISORS
TO: HONORABLE BOARD OF SUPERVISORS
FROM: William Jones, Chief Building Official
DATE: July 30, 2003
ORDINANCE ADOPTING THE URBAN-WILDLANDS INTERFACE CODE
Co19-03-01 Pirna Countv - Mt. LemmonlAsDen Fire Area: Ado~tiono f the Urban-Wildlands
lnterface Code
An ordinance of the Board of Supervisors of Pima County, Arizona relating to
buildings and construction and to fire prevention; adopting by reference the 2003
International Urban-Wildlands lnterface Code, together with local amendments, to be
applicable in all areas designated in the Pima County Comprehensive Plan as Rural
Forest Village and areas adjacent thereto, and amending Title 15 of the Pima County
Code to reflect the Code adopted by this ordinance. (All Districts) The Planning and
Zoning Commission recommends APPROVAL (7 - 0, Commissioners RedDog and
Smith were absent). Staff recommends APPROVAL. (All Districts)
If approved, adopt ORDINANCE NO. 2003 -
PLANNING AND ZONING COMMISSION PUBLIC HEARING SUMMARY
MEETING OF JULY 30,2003
At the direction of the Pima County Board of Supervisors, the Planning and Zoning Commission
held a hearing on July 30, 2003, on a proposal for the adoption of the Urban-Wildland Interface
Code. Staff presented the 2003 lnternational Urban-Wildland lnterface Code as written by the
International Code Council, with local modifications.
At the public hearing, 16 speakers, as well as Commission members, commented and asked
questions regarding the proposed code. There was general discussion by the Commissioners.
Ed Marley, President of Southern Arizona Chapter of the American Institute of Architects, and
member of the Aspen Fire Restoration Committee, spoke in favor of the ordinance. He indicated
that the American lnstitute of Architects, American Society of Civil Engineers and the Fire District
would be conducing an intensive review of road access and water supply infrastructure.
Bill Roe, citizen, commented in support of the new regulations.
Dennis Cassetti, building contractor, commented that the code is a good compromise for a safer
community and that the additional costs will be about $2,500.00 for a project he's currently building.
Peter Artwall, manufactured home advocate (owns a manufactured outlet), commented on the
imposition of an 80 pound roof load. He felt the requirement eliminated the option of manufactured
housing and that there was no scientific basis for the requirement. Staff explained that this was
a snow load requirement adopted with the modifications to the lnternational Building and
Residential Codes, not the lnternational Urban-Wildland Interface Code. Itwas recommended that
this issue be directed to the joint CityICounty Building Code Committee.
Mr. Richard.Westervelt submitted a letter on the roof load requirement. He was also directed to
the joint CityICounty Code Committee.
Danielle Hayhurst, Mt. Lemmon Fire District Board Member, commented that it is the position of
the Mt. Lemmon Fire District Board that the process is going too quickly and there needs to be
further study before adoption of both zoning and building codes.
Jim Grisham, Fire Marshall, Northwest Fire District, commented that the document itself is fine, but
noted that some of the language conflicts with the Uniform Fire Code adopted by the Northwest
Fire District. He indicated that Northwest Fire District is in support, but felt there is more work that
needs to be done.
Steve Schoon, Fire Marshall, Golder Ranch Fire District expressed concerns. He stated that State
Statute would allow fire districts to adopt the Uniform Fire Code, but not the lnternational Urban-
Wildland Interface Code. He commented that some of the language conflicts with the Uniform Fire
Code adopted by the Golder Ranch Fire District.
David Stone, Fire Marshall, Drexel Heights Fire District, indicated an interest in working with Pima
County on the code. He also referenced discrepancies with the adopted Uniform Fire Code. He
stated that they are working on Intergovernmental Agreements, but could not enforce the
lnternational Codes unless they resolve issues with the State Fire Marshall's Office.
William Paterson, FEMA, comment that it was his opinion that the code is the best tool available
to offset the impact of loss of life and structures in this Urban-Wildland Interface area. Mr.
Patterson supported code adoption and the County's action to adopt this code.
Ross Quigley, Mt. Lemmon Water Co-op Board Member, supports the code. He expressed
concerns with Appendix C for establishing the fire hazard severity rating. He felt that overall the
building code changes coupled with proposed zoning changes will provide additional fire protection.
Andrew Karick, building contractor, inquired about whether the County or fire district has jurisdiction
to administer, enforce and grant variances to the code. Staff indicated that the County would
administer the Code, but could enter into an IGA with the fire district if they wished to administer
it. The speaker felt that the code was good for safety.
Bob Zimmerman, President, Mt. Lemmon Fire District Board, comment that the District felt that the
code was moving too quickly. He stated he supports safer fire zones for the firemen and
reasonably insuring structures. He stated that if the code is adopted, certain procedures should
be put in place. He requested the following: (1) That Pima County, through the use of FEMA 406
funds, assist with roadway and water improvements; (2) Expansion and improvement of all roads
to meet the code requirements of all emergency vehicle access; (3) That Pima County
compensate the Mt. Lemmon Fire District for the cost of training, plan review and enforcement of
the code; and (4) That Pima County declare that they will provide legal protection to the Mt.
Lemmon Fire District for any actions arising from enforcement of the code.
Judy Lefton, cabin owner, stated that she had heard that some private property will be taken by the
county for fire truck accessibility. She felt residents should be notified before adoption of the code
so they will know how much property will be taken and how they will be compensated. She inquired
about how the code would be implemented and whether the Mt. Lemmon Fire District has the
experience, knowledge and objectivity to make variance decisions. She commented that future
meetings should be open to the public and Mt. Lemmon property owners.
Linda Olivarez, cabin owner, comment on the County road project on Phoenix Avenue. She
inquired about the elevation of the road and the process. Ben Goff, Deputy Director, Department
of Transportation, stated that the road elevations for the most part would remain the same, but
allowances may need to be made. He stated that some lots will still continue to have access
problems.
George Good, Fire Marshall, Rural Metro Fire Department agreed with Mr. Goff's comments. He
commented on the issue of the cost of fire hydrants. He felt the code could be modified as needed.
He supported and recommended that the code be forwarded to the Board of Supervisors.
The public hearing was closed.
On motion by Commissioner Gungle and seconded by Commissioner Poulos, the Planning and
Zoning Commission recommended APPROVALof the 2003 International Urban-Wildland Interface
Code, together with local amendments, as presented (7 -0, Commissioners RedDog and Smith
were absent).
MEMORANDUM
PUBLIC WORKS - DEVELOPMENT SERVICES
DATE: July 30, 2003
TO: Planning and Zoning Commission
FROM: William Jones, Chief Building Official
SUBJECT: STAFF REPORT ON ORDINANCE C019-03-01, URBAN WILDLANDS
INTERFACE CODE
Introduction
The Aspen Fire started during the afternoon on Tuesday June 17, 2003 one mile southwest of
Summerhaven, Arizona in the Santa Catalina mountains. Over the course of thirty days, the fire
consumed 86,000 acres and destroyed 335 residences, 10 commercial properties, and four
outbuildings. The size and the severity of the fire, coupled with its proximity to Tucson made this
a high profile and challenging incident. The fire was contained at 6pm on Tuesday July 15,2003.
Background
Pima County, at the onset of the Mt. Lemon Fire, consulted with other jurisdictions within the
western portion of the United States, including Arizona, California, Colorado, and New Mexico to
determine which code adoptions had been used to address forest fires.
After consultation with local fire districts, Mt Lemon, Golder Ranch, Northwest, and U.S. Forestry
and Arizona State Land Fire Management, it was decided to use the International Urban-Wildland
Interface Code as published by the International Code Council, with local modifications.
Recommendations came from the committee, made up of residents, contractors, architects, fire
protection engineers, fire district staff, all familiar or residing at Mt. Lernrnon. There were meetings
held with input from each of the affected homeowners associations, which were open to the public
at different locations, both in town and on Mt. Lemon.
Fire in the urban-wildland interface is an international problem involving factors unique to the
hazard. Survey teams meeting to discuss lessons learned from devastating wildfires have identified
the potential value of a model code addressing mitigation of the urban-wildland interface hazard.
The purpose of this code is to assist in the mitigation of fire hazards in the urban-wildlife interface.
Regulations address both land use and the built environment in designated urban-wildland interface
areas. Construction requirements are based on the exposure hazards to which the structure may be
subjected. Resources for these requirements include data collected from tests and fire incidents,
technical reports and mitigation strategies from around the world, and established ordinances from
various jurisdictions that have been mitigating these hazards.
Though provisions have been in model codes to mitigate hazardous fire areas, this code stands as
a comprehensive document which varies construction requirements based on the exposure presented.
Bridging a gap between enforcement of the Building Code and Fire Code, this code is intended to
be enforced by code officials designated by the administrative body in the jurisdiction, whether it
be the building official, fire official, or both.
The provisions are intended to be used with or without local building and fire codes that are adopted,
whether or not they are part of a model code system. However, this code is correlated with model
building and fire code regulations to avoid conflicting provisions.
The provisions of this code shall apply to the construction, alteration, moving repair, maintenance
and use of any building, structure or premises within the urban-wildland interface areas in this
jurisdiction.
Buildings or conditions in existence at the time ofthe adoption of this code are allowed to have their
use or occupancy continued, if such condition, use or occupancy was legal at the time ofthe adoption
of this code, provided such continued use does not constitute a distinct danger to life or property.
New buildings or structures within the jurisdiction shall comply with the provisions of this code.
The objective of this code is to establish minimum regulations consistent with nationallyrecognized
good practice for the safeguarding of life and property. Regulations in this code are intended to
mitigate the risk to life and structures from intrusion of fire from wildland fire exposures and fire
exposures from adjacent structures and to mitigate structure fires from spreading to wildland hels.
The extent of this regulation is intended to be tiered commensurate with the relative level of hazard
present.
The unrestricted use of property in urban-wildland interface areas is a potential threat to life and
property from fire and resulting erosion. Safeguards ;to prevent the occurrence of fires and to
provide adequate fire-protection facilities to control the spread of fire in urban-wildland interface
areas shall be in accordance with this code.
Overview:
The Urban-Wildland Interface Code, which is a companion to the International Fire Code, imposes
special building construction regulations, fire-protection requirements, vegetation and ignition source
controls, access restrictions, material storage and dumping controls, water system protections and
land use limitations in areas established as urban-wildland interface areas. Urban-wildland interface
areas can be declared by a legislative body based on findings of fact related to climatic, topographic
and geographic conditions, which support such an establishment. The area must include a minimum
640 acres unless a smaller area is approved through an assessment of fuel types and physical
characteristics affecting wildland fire behavior.
Upon e stablishment o f t he u rban-wildland i nterface area and adoption o f t he U rban-Wildland
Interface Code, the jurisdiction must establish the fire hazard severity of proposed building sites and
impose ignition-resistant construction requirements based on the severity level. Fire-protection
requirements are also mandated including the installation of automatic fire sprinkler systems and the
establishment and maintenance of a "defensible space", which reduces the fuel load created by
vegetation in areas adjacent to structures. Based on a fire hazard severity classification ofmoderate,
high or extreme, corresponding fuel modification distances of 30, 50 and 100 feet are required.
The fire hazard rating may be reduced by implementing a vegetation management plan for buildings
or structures located on 2 acres or more or for multiple sites, which reduces the amount of fuel
available for wildfire and the probability of rapidly spreading wildfire. Vegetation management
plans must describe all actions that will be taken to prevent a fire fiom being carried toward or away
from a building. Elements of the plan include the removal of slash, snags, other fuels, ladder fuel
and dead trees, and thinning of live trees.
Conclusion:
Staff recommends adoption of the International Urban-Wildland Interface Code, with amendments
and believes that this code adoption will protect life and property damage in the future.
This code shall supplement the building codes, for Pima County, to provide for special regulations
to mitigate the fire-and life-safety hazards of the urban-wildland interface areas.
HOMES DIRECT
MANUFACTURED HOMES
"The Best ... For Less!"
Peter Artwohl Owner, REALTOR
7300 N. Star Commerce Way
Marana, Az 85743
520-74470 1 4
elizaandpefer@aol.com
To: Pima County Planning and Zoning Commission and Board of .
~upervisors
Re: - Mt. Lemon Building Codes as they relate to factory built homes
T.h is. letter is request a fifteen minute block to bette?.undentandt he following:
1. UBC Code and how it will be applied to Mt. Lemon residents.
.2. Fire rating of one hour and how it relates to UBC.
3. Requirements of roof load and roof pitch on Mt. Lemon.
In general, we need to know exactly how to build to pass gJ inspections. We will
then be able to price our option so the residents can have all the information
needed'to weigh out option correctly.
I will bring factory personnel with me.
Sincerely,
Below
NORTHWEST FIRE DISTRICT
Comments on the
INTERNATIONAL URBAN-WILDLAND INTERFACE CODE
As proposed by Pima County
are my comments related to the above referenced document:
Including fire district's in the definition of "CODE OFFICIAL" addresses my
concern regarding jurisdictional issues. It should be noted that fire
districts will not subordinate themselves to the County with respect to fire
code issues, but rather, will work with the County sr?d the public on these
matters.
Violation of the IUWlC is a criminal misdemeanor. Fire code violations in
most fire districts are treated as civil infractions.
The committee changed the definition of WILDLAND FIRE." Why?
Have not seen the boundaries of the urban-wildland interface area(s) in
Pima County. I've been told by Bill Jones that nothing irl this area is less
than a moderate hazard.
The proposed code indicates that addressing will be accordance with the
fire districts. Many of the fire districts defer to the Pima County addressing
standards.
The IUWlC refers to the International Fire Code (IFC) in many of it's
sections. The only jurisdictions that use the IFC are the City of Tucson
and the Town of Oro Valley. By State Statute, fire district can only adopt
the Uniform Fire Code (UFC). Where this occurs, the reference should
simply be "FIRE CODE."
The requirements for driveways are quite good. There could be a problem
where these requirements are less than the State's minimum
requirements. Fire districts cannot adopt requirements that are less
restrictive than the State's. However, it would depend on the applicability
of the definition of "FIRE APPARATUS ACCESS ROADWAYS." I don't
know how State law impacts counties in this regard.
Turning radii requirements should be based on each fire jurisdiction's
needs. The specifics provided in the IUWlC may not provide the
necessary clearances of the respective fire jurisdictions.
9. The issue of grades is also a fire jurisdiction issue and should be left to
them. I will tell you, the proposed grade i.n the IUWlC conflicts with what
many fire jurisdictions are requiring.
?O. Water supply requirements differ somewhat from what many fire districts
are currently using. If the urban-wildland interface area falls in a fire
district, the fire district requirements would prevail. This code should defer
to the fire district if they have a legally adopted code in place.
11. Stand-by power supply to meet water supply demands should be required
with the possible exception of one single-family dwelling. However, this
would be dependent on the fire district's ability to draft from a static supply
source.
12. Sec. 105.3 exempts detached accessory buildings located more than 10
feet from the nearest adjacent structure from needing a permit. Yet, Sec.
504.1 1 (Class 1 construction) and 505.1 1 (Class 2 construction), requires
that a detached accessory structure located less than 50 feet from a
building containing habitable space.
13. It's my understanding that the County is proposing the adoption of
Appendix A only. With that understanding, is the provision to restrict entry
to public lands only apply to those lands under the jurisdiction of the Pima
County? If so, fine. Otherwise, my concern would be infringement on
state or federal jurisdiction.
14. Sec. A107.5 Protection of electrical power supplies. I oppose the
"Exceptionn to requirements for a standby power source when the primary
power service to pumps are underground.
15. Sec. A1 08.4 Access roadways. 24 ft.' vs. 20 ft. Fire district requirements
are 20 feet.
Memo
To: Pima County Planning and Zoning Commission
From: Robert T. Zimmerman, Chairman, Mount Lemmon Fire
District.
Subject: Adoption of the International Urban Wildland Interface
Code for Pima County, the Code.
The Mount Lemmon Fire District (MLFD) Board of Directors requests
additional time for the study of the Code.
However, if the Board of Supervisors adopts the Code, we request
the following:
That Pima County, through the use of FEMA 406 funds assist:
o Mt. Lemmon Water Improvement District in such a way that
fire protection be extended to all the existing and new cabins
on Mt. Lemmon to provide a fire hydrant within 1000 feet of
each cabin.
o Expansion and improvement of ail roads to meet the Code
requirements for emergency vehicle access.
MLFD would ask the Pima County government to:
o Enter into an intergovernmental agreement to compensate
the Fire District for the costs for the plan review and
enforcement of the Code.
o Schedule annual review of the Code on its anniversary for
the next two years and
o Set an emergency procedure allowing amendment of the
Code upon recommendation of MLFD Board of Directors
should unforeseen provisions of the Code stymie rebuilding.
o Provide legal defense for MLFD for any actions arising from
the enforcement of the Code
2003 International Urban-Wildland Interface CodeTM
First Printing: Januav 2003
ISBN 1-892395-70-3 (soft) ISBN
1-892395-88-6 (edocument)
COPYRIGHT 0 2003
INTERNATIONAL CODE
A
ALL RIGHTS RESERVED. This 2003 International Urba~rn rk mned by the Inter-national
Code Council, Inc. Without advance written permission from the copyright owner, no part of this book may be reproduced,
distributed, or transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by
way of example and not limitation, photocopying, or recording by or in an information storage retrieval system). For i n f o d o n on
permission to copy material exceeding fair use, please contact: Publications, 405 1 West Flossmoor Road, Country Club Hills, IL
60478-5795 (Phone 800-214-4321).
,$r"&W yf& \#a
Trademarks: "International ~ode~ouncilth,"e "International Code Council" logo and the "International Urbanwildland Interface
Code" are trademarks of the International Code Council Inc.
PRINTED IN THE U.S.A.
PREFACE
Introduction
Internationally, code officials recognize the need for a modem, up-t*date code addressing the mitigation of fire in the urban-wild-land
interface. The International Urban- Wildland Interface CodeT% ths 2003 edition, is designed to bridge the gap between err
forcement of the International Building Code@ and International Fire Code@ by mitigating the hazard of wildfires through model
code regulations, which safeguard the public health and safety in all communities, large and small.
This comprehensive urbanwildland interface code establishes minimum regulations for land use and the built environment in
designated urban-wildland interface areas using prescriptive and performancerelated provisions. It is founded on data collected
from tests and fire incidents, technical reports and mitigation strategies from around the world. T~I2S0 03 edition is fully compatible
with all the Inter national Codes TM ('?-Codes" TM ) pubhshed by the International Code Council@ (ICCB), including the International
Building Code@, ICC Electrical Code TMI,n ternational Enerm Conservation Code@, International Fire Code@, International Fuel
Gas Code@, International Mechanical Code@, ICC Performance CodeTM International Plumbing Code@, International Private
Sewage Disposal Code, International Property Maintenance Code, International Residential Code and International Zoning
cm. T$$g$g&&
Thelnternational Urban Wildland Inte$ace Code provisions provlde many benefits, including the model code development pre
cess, whch offers an international forum for fue safety professionals to discuss performance and prescriptive code requirements.
This forum ~rovidesa n excellent wena to debate vro~osedre visions. This model code also encourages international consistencv in
the application of provisions.
Develo~ment - %%m%%nr
This is the first edition of the International Urban- Wildland Interface Code (2003) and is the culmination of an effort initiated in
2001 by the ICC and the three statutory members of the International Code Council: Building Officials and Code Administrators
International, Inc. (BOCA), International Conference of Building Officials (ICBO) and Southern Building Code Congress Intema-tional
(SBCCI). The intent was to draft a comprehensive set of regulations for mitigating the hazard to life and property fiom the
intrusion of fire fi-om wildland exposures and fire from adjacent structures, and preventing structure fires from spreading to wildland
hels. Technical content of the 2000 Urban- Wildland Inte$ace Code, published by the International Fire Code Institute, was utilized
as the basis for the development, followed by the publication of the 2001 Final Draft. This 2003 edition is based on the Final Draft,
with changes approved in thh002 ICC Code$gvelopment Process. A new edition such as this is promulgated every three years. mm
With the development and publication of the family oflntemational Codes in 2000, the continued development and maintenance
of the model codes individually promulgated by BOCA ("BOCA National Codes"), ICBO ("Uniform Codes") and SBCCI ("Stan
dard Codes") was discontinued. The 2003 International Codes. as well as their ~redecessors--the 2000 International Codes-are
intended to be the successor set of codes to those codes previdusly developed by BOCA, ICBO and SBCCI.
The development of a single farnilv of comprehensive and coordinated International Codes was a significant milestone in the
development of regulations f& the b$t environkent. The timing of t hp~ub~lic ahon mirrors a milestone ininthec hange in structure of
the model codes, namely, the pendmg consolidation of BOCA, ICBO and SBCCI into the ICC. The activities and services previously
provided by the individual model code organizations will be the responsibility of the consolidated ICC.
Y A m
This code is founded on principles intended to mitigate the hazard fiom fires through the development of provisions that adequately
protect public health, safety and welfare; provisions that do not unnecessarily increase construction costs; provisions that do not
restrict the use of new materials, products or methods of construction; and provisions that do not give preferential treatment to partic -
ular types or classes of materials products or methods of construction. FP
Adoption
The International Urban- Wildland Inte$ace Code is available for adoption and use by jurisdictions internationally. Its use within a
governmental jurisdiction is intended to be accomplished through adoption by reference in accordance with proceedings establish
ing the jurisdiction's laws. At the time of adoption, jurisdictions should insert the appropriate information in provisions requiring
specific local mformation, such as the name of the adopting jurisdiction. These locations are shown in bracketed words in small
capital letters in the code and in the sample ordinance. The sample adoption ordinance on page v addresses several key elements of a
code adoption ordinance, including the mformation required for insertion into the code text.
iii
Maintenance
The International Urban-Midland Inte$ace Code is kept up-to-date through the review of proposed changes submitted by code
enforcing officials, industry representatives, design professionals and other interested parties. Proposed changes are carellly cop
sidered through an open code development process in whlch all interested and affected parties may participate.
The contents of this work are subject to change both through the Code Development Cycles and the governmental body that enacts
the code into law. For more Information regarding the code development process, contact the Code and Standard Development De-partment
of the Intemational Code Council.
Although the development procedure of the International Urban- Wildland Inter$ace Code assures the highest degree of care, ICC
and the founding members of ICC-BOCA, ICBO and SBCCI-their members and those participating in the development of this
code do not accept any liability resulting from compliance or noncompliance with the provisions, because ICC and its founding
members do not have the power or authority to police or enforce compliance with the contents of tbs code. Only the governmental
body that enacts the code into law has such authority.
ORDINANCE
The International Codes are designed and promulgated to be adopted by reference by ordinance. Jurisdictions wishing to adopt the
2003 International Urban- Wildland Interface Code as an enforceable regulation for the mitigation of fire in the urban-wildland
interface should ensure that certain factual information is included in the adopting ordinance at the time adoption is being considered
by the appropriate governmental body. The following sample adoption ordinance addresses several key elements of a code adoption
ordinance, including the information required for insertion into the code text.
SAMPLE ORDINANCE FOR ADOPTION OF THE
INTERNATIONAL URBAN-WILDLAND INTERFACE CODE
fip
ORDINANCE NO.
An ordinance of the lJURISDICTIONl adopting the 2003 editlon of the International Urban- Wildland Interface Code, regulat~ng
and governing the mitigation of hazard to life and property from the intrusion of fire from wildland exposures, fire from adjacent
structures and prevention of structure fires from spreading to wildland fuels in the JJURISDICTIONl :providing for the issuance of
permits and collection of fees therefor; repealing Ordinance No. of the JJURISDICTIONl and all other ordinances and parts
of the ordinances in conflict therewith.
The IGOVERNING BODY1 of the [JURISDICTION1 does ordain as follows:
&&A.
Section 1. That a certain document, three (3) copies of which are on file in the office of the JTITLE OF JURISDICTION'S KEEPER OF
RECORDS1 of NAME OF JURISDICTION1 .being marked and designated as the International Urban- Wildland Interface Code, 2003
edltion, including Appendix Chapters JFILLINTHEAPPENDIXCHAPTERS BEING ADOPTED 1. as published by the International Code
Council, be and is hereby adopted as the Urban-Wildland Interface Code of the ~JURISDICTIONl . in the State of [STATE NAME1 for
regulating and governing the mitigation of hazard to life and property from the intrusion of fire from wildland exposures, fire from
adjacent structures and prevention of structure fires from spreading to wildland fuels as herein provided; providing for the issuance
of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said
Urban-Wildland Interface Code on file in the office of the JJURISDICTIONl are hereby referred to, adopted, and made a part hereof,
as if fully set out in this ordinance, with the additions, insertions, deletions and changes, if any, prescribed in Section 2 of this
ordinance.
-.$9Jr*ah -1
Section 2. The following sections are hereby revised:
Section 101.1. Insert: mAME OF JURlSDICTION]
Section 3. That Ordinance No. ofJJURISDICTSOr\rl entitled FILL IN HERE THE COMPLETE TITLE OF THE ORDINANCE OR
ORDINANCES IN EFFECT ATI'HEPRESENTIIMESOTHA'ITHEY WILL BE REPEALED BY DEFINITE MENTIONL and all Other ordinances
or parts of ordinances in conflict herewith are hereby repealed.
Section 4. That if any section, subsection, sentence, clause or phrase of this ordinance is, for any reason, held to be unconstitutional,
such decision shall not affect the validity of the remaining portions of this ordinance. The [GOVERNING BODY] hereby declares that
it would have passed this ordinance, and each section, subsection, clause or phrase thereof, irrespective of the fact that any one or
more sections, subsections, sentences, clauses and phrases be declared zmconstitutional.
Section 5. That nothing in this ordinance or in the Urban- Wildland Interface Code hereby adopted shall be construed to affect any
suit or proceeding impending in any court, or any rights acquired, or liability incurred, or any cause or causes of action acquired or
existing, under any act or ordinance hereby repealed as cited in Section 2 of this ordinance; nor shall any just or legal right or remedy
of any character be lost, impaired or affected by this ordinance.
Section 6. That the JJURISDICTION'S KEEPER OF RECORDS] is hereby ordered and directed to cause this ordinance to be
published. (An additional provision may be required to direct the number of times the ordinance is to be published and to specify that
it is to be in a newspaper in general circulation. Posting may also be required.)
* Section 7. That this ordinance and the rules, regulations, provisions, requirements, orders and matters established and adopted a hereby shall take effect and be in full force and effectITIME PERIOD] Erom and after the date of its final passage and adoption.
Section 8. Specific boundaries of natural or man-made features of urban-wildland interface areas shall be as shown on the w~ldland e area interface map The legal description of such areas IS as descnbed as follows JINSERT LEGAL DESCRIPTION]
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TABLE OF CONTENTS
CHAPTER 1 ADMINISTRATION ..................................1.. 606 Liauefied Petroleum Gas Installations. ............. 20
Section
101 GeneraL ....................................................... 1
102 Authority of the Code Official ......................... 1
103 Compliance Alternatives ................................ 2
104 Appeals ....................................................... 2
105 Permits ...................................................... 2
106 Plans and Specifications ................................. 4
107 Inspection and Enforcement ............................ 4
108 Certificate of Completion ............................... 5
CHAPTER2 DEFINITIONS .........................................7..
Section
201 General ....................................................... 7
202 Definitions ................................................. 7
CHAPTER 3 URBAN-WILDLAND INTERFACE
AREAS ........................................................9.. .
Section
301 General ....................................................... 9
302 Urban-Wildland Interface Area Designations . . 9
BAN-WILDLAND INTERFACE
EA REQUIREMENTS ...................... 11
401 General ..................................................... 11
402 Applicability .............................................. 11
403 Access ....................................................... 11
404 Water Supply ............................................ 12
405 Fire Protection Plan .................................... 13
CHAPTER 5 SPEClAL BUILDING CONSTRUCTION
REGULATIONS ........................................ 15
& Section
501 General ..................................................... 15
502 Fire Hazard Severity .................................... 15
503 Ignition-resistant Construction ....................... 15
504 Class 1 Ignition-resistant Construction .......... 15
505 Class 2 Ignition-resistant Construction .......... 17
506 Class 3 Ignition-resistant Construction .......... 18
.....
.
507 Replacement or Repair of Roof Coverings 18
I) CHAPTER 6 FIREPROTECTION
......................................
@ REQUIREMENTS 19
0 Section
601 General ..................................................... 19
a 602 Automatic Fire Sprinkler Systems .................. 19
0 603 Defensible Space ....................................... 19
604 Maintenance of Defensible Space .................. 20
605 Spark Arresters ........................................... 20
I)
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607 Storage of Firewood and Combustible
Materials ..................................................2..0.
CHAPTER 7 REFERENCED STANDARDS ................2 1
APPENDIX A GENERAL REQUIREMENTS ... 23
Section
A101 General ...................................................... 23
A102 Vegetation Control ....................................... 23
A103 Access Restrictions ...................................... 24
A1 04 Ignition Source Control ............................... 24
A105 Control of Storage ...................................... 25
A106 Dumping .................................................... 25
A107 Protection of F'umps and Water
Storage Facilities ....................................... 26
A108 Land Use Limitations ................................... 26
APPENDIX B VEGETATION MANAGEMENT
PLAN ...............................................2. 7
APPENDIX C FIRE HAZARD SEVERITY
FORM .................................................2..9.
APPENDIX D FIRE DANGER RATING
SYSTEM .............................................3.. 1
APPENDIX E FINDINGS OF FACT ......................... 35
APPENDIX F CHARACTERISTICS OF
FIRERESISTIVE
VEGETATION .....................................3. 9
APPENDIX G SELF-DEFENSE
MECHANISM. ..................................4..1
APPENDIX H INTERNA TIONAL
URBAN- WILDLAND INERRACE
CODE FLOWCHART ................. 43
INDEX ......................................................................................4. 7
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CHAPTER 1
ADMINISTRATION
SECTION 101 ments of this code, provided the addition or alteration conforms
GENERAL to that required for a new building or structure.
101.1 Title. These regulations shall be known as the Urban- Exception: Provisions of this code that specifically apply to
MWInfe$ace C& of [NAME OF JURISDICTION], herelnaf existing conditions are retroactive. See Sections 402.3,
ter referred to as "this code." 60 1.1 and Appendix A.
101.2 Scope. The provisions of this code shall apply to the Additions or alterations shall not be made to an existing
construction, alteration, movement, repair, maintenance and building or structure that will cause the existing building or
use of any building, structure or premises within the urban- structure to be in violation of any of the provisions of this code
wildland interface areas in this jurisdiction. nor shall such additions or alterations cause the existing build-ing
or structure to become unsafe. An unsafe condition shall be
Buildings or conditions in existence at the time of the adop deemed to have been created if an addition or alteration will
tion o f k are allowed to have their use or occupancy cop cause the existing building or structure to become structurally
tinued, if such condition, use or occupancy was legal at the ' safe or overloaded; will not provide adequate access in com-of
the adoption of this code, provided such continued use ce with the provisions of this code or will obstruct existing
not constitute a distinct danger to life or property. or access; will create a fire hazard; will reduce required
esistance or will otherwise create conditions dangerous to
Buildings or structures moved into or within the jurisdict
shall comply with the provisions of t hc~od e for new bddings
or structures. 1.6 Maintenance. All buildings, structures, landscape ma-erials,
vegetation, defensible space or other devices or safe-
101.3 Objective. The objective of this code blish guards required by ths code shall be maintained in conform-minimumre
gulations consistent with nationally recognized ance to the code edition under which installed. The owner or the
good practice for the safewding o f ~aend ~ ~ g qu$lQo~w ne r's designated agent shall be responsible for the mainte-tions
in this code are intended to mitigate the risk to life and rs@4 nance buildings, structures, landscape materials and veget*
structures from intrusion of fire from wildland fire exposures *'wp tlon.
and fire exposures from adjacent structures and to mitigate v
structure fires from spreading to wildland fuels. The extent of SECTION 102
this regulation is intended to be tiered commensurate with the
relative level of hazard present.
AUTHORITY OF THE CODE OFFICIAL
102.1 Powers and duties of the code official. The code off1
The -estricted use of property in urb cia1 is hereby authorized to administer and enforce this code, or
areas is a potential threat to life and property from fie and re desimated sections thereof, and all ordinances of the iurisdic
suiting erosion. Safewards to prevent the occurrence of fires tion pertaining to designated urbarrwildland interface areas.
and to provide adequate fireprotection facilities to control the F,, purposes, the code shall have the powers of a
spread of fire in urban-wildland interface areas shall be in ac- law enforcement officer,
cordance with this code.
YS?~ 102.2 Interpretations, rules and regulations. The code of
This code shall supplement the jurisdiction's building ficial shall have the power to render interpretations of this code
codes, if such codes have been adopted, to provide for special and to adopt and enforce rules and supplemental regulations to
regulations to mitigate the fire and lifesafety hazards of the clarify the application of its provisions. Such interpretations,
urban-wildland interface areas. rules and regulations shall be in conformance to the intent and
VQ@V purpose of this code.
101.4 Retroactivity. The provisions of the code shall apply
to conditions arising after the adoption thereof, conditions not A copy of such rules and regulations shall be filed with the
legally in existence at the adoption of this code, to conditions clerk of the jurisdiction and shall be in effect immediately
hwahzcarhd, tion tlhifee oopr ipnrioopne orfty t.h e code official, constitute a distinct tthoe trheea fpteurb. lAicd, ditional copies shall be available for distribution
Exception: Provisions of this code that specifically apply to 102.3 Lwiaitbhi tlhitey e noffo trhceem ceondt oef othff iccioadle. ,T ahctein cgo ind eg ooofdfi fcaiiathl
existing conditions are retroactive. See Sections 402.3, ,d without in the discharge ofthe duties required by
60 1.1 and Appendix A. this code or other pertinent law or ordinance, shall not thereby
101.5 Additions or alterations. Additions or alterations may be rendered personally liable for damages that may accrue to
be made to any building or structure without requiring the ex Pemns or property as a result of an act or by reason of an act or
istiw building or structure to comply with of the require omission in the discharge of such duties. A suit brought against
2003 INTERNATIONAL URBAN-WILDLAND INTERFACE CODETM 1
ADMINISTRATION
the code official or employee because of such act or omission this code and that the altemative is, for the purpose intended, at
performed by the code official or employee in the enforcement
of any provision of such codes or other pertinent laws or ordi-nances
implemented through the enforcement of this code or
enforced by the code enforcement agency shall be defended by
this jurisdiction until fmal termination of such proceedings,
and any judgment resulting therefrom shall be assumed by this
jurisdiction. The code enforcement agency or its parent juris -
diction shall not be held as assuming any liability by reason of
the mans authorized by th~sco de or any permits or cert&
cates issued under this code.
102.4 Other agencies. When requested to do so by the code
official, other officials of thls jurisdiction shall assist and coop
erate with the code official in the discharge of the duties re-quired
by this code.
SECTION 103
COMPLIANCE ALTERNATIVES
103.1 Practical difficulties. When there are practical diffi
culties involved in carrying out the provisions of this code, the
code official is authorized to grant modifications for individual
cases on application in writing
rized representative. The code official
cia1 individual reason makes enforcement of the strict letter of
t hc~ode impractical, the modification is in conformance to the
intent and purpose of this code, and the modification does not
lessen any fire protection requirements or any degree of struc
ment agency.
If the code official d e t s e s that
of erosion or other unusual circumst
pliance with the vegetation control provisions of the code deb5
mental to safety or impractical, enforcement thereof may be
suspended, provided that reasonable altemative measures are
taken. p&Wv
103.2 Technical assistance. To determine the acceptability
of technologies, processes, products, facilities, materials and
uses attending the design, operation or use of a building or
premises subject to the inspection of the code official, the code
official is authorized to require the owner or the person in pos
session or control of the bwldmg or premises to provide, with
out charge to the jurisdiction, a techmcal opinion and report.
The opinion and report shall be prepared by a qualified engi
neer, speciaht, laboratory or fxe safety specialty organization
acceptable to the code official and the owner and shall analyze
the fire safety of the design, operation or use of the building or
premises, the facilities and appurtenances situated thereon and
fuel management for purposes of establishing fire hazard se
verity to recommend necessary changes.
103.3 Alternative materials or methods. The code official,
in concurrence with approval from the bullding official and fire
chief, is authorized to approve alternative materials or meth
ods, provided that the code official fmds that the proposed de
sign, use or operation satisfactorily complies with the intent of
least equivalent to the level of quality, strength, effectiveness, not have authority relative to interpretation of the admmstra
fxe resistance, durability and safety prescribed by this code. tive provisions of this code and shall not have authority to
Approvals under the authority herein contained shall be subject waive requirements of this code.
to the approval of the building official whenever the alternate
material or method involves matters regulated by the Interna-tional
Building Code. SECTION 105
The code official shall require that sufficient evidence or PERMITS
~roofoesu bmitted to substantiate any claims that may be made 105.1 General. When not otherwise provided in the require
regarding its use. The details of any action granting approval of merits of the building or fxe code, permits are required in ac
an alternate shall be recorded and entered in the files of the code cordance with section 105.
enforcement agency.
105.2 Permits required. Unless otherwise exempted, no
building or structure regulated by this code shall be erected,
SECTION 104 constructed, altered, repaired, moved, removed, converted or
APPEALS demolished unless a separate permit for each bullding or struc
ture has fxst been obtained from the code official.
104.1 General. To determine the suitability of alternative For buildings es erected for temporary uses, see
materials and methods and to provide for reasonable interprets ~ ~A, sectio~n ~108~.3o,f this c~ode, d i ~
tions of the provisions of this code, there shall be and hereby is A& " vsp-& %
created aboard of appeals consisting of five members who are When required by the code official, a permit shall be ob-qualified
by experience and training to pass judgment on perti tained for the following activities, operations, practices or
nent matters. The code official, building official and fire chief functions within an urbmwildland i n s a c e area:
shall be ex officio members, and the code official shall act as @F 1 1. Automobile wrecking yard.
secretary of the board. The board of appeals shall be appointed
by the legislative body and shall hold office at their discretion. 2. Candles and open flames in assembly areas.
The board shall adopt reasonable rules and regulations for con 3. Explosives or blasting agents.
ducting its investigations and shall render decisions and find
ings in writing to the code official, with a duplicate copy to the 5. Flammable or combustible liquids.
applicant. 1s.
104.2 Limitations of authority. The boar
2 2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE^^
7. Liquefied petroleum gases.
8. Lumberyards.
9. Motor vehicle fuel-dispensing stations.
depar trnents concerned.
10. Open burning.
11. Pyrotechnical special effects material.
12. Tents, canopies and temporary membrane structures.
13. Tire storage.
14. Welding and cutting operations.
105.3 Work exempt from permit. Unless otherwise pro
vided in the requirements of the bullding or fre code, a permit
shall not be required for the following:
1. Onsstory detached accessory builhgs used as tool and
storage sheds, playhouses and similar uses, provid:d the
floor area does not exceed 120 square feet (1 1.15 m ) and
the structure is located more than 10 feet (3048 mm)
from the nearest adjacent structure.
2. Fences not over 6 feet (1829 rnrn) high.
Exemption from the permit requirements of this code shall
not be deemed to gy-ant authorization for any work to be done in
any manner in violation of the provisions of this code or any
other laws or ordinances of this jurisdiction.
The code official is authorized to stipulate conditions for
permits. Permits shall not be issued when public safety would
be at risk, as determined by the code official.
such application shall:
1. Idenm and describe the
tice or hction to be cov
plication is made.
2. Describe the land on which the proposed work, activity,
operation, practice or function is to be done by legal de
scription, street address or similar description that will
readily iden* and definitely locate the proposed build
ing, work, activity, operation, practice or function.
3. Indicate the use or occupancy for which the proposed
work, activity, operation, practice or function is in
tended.
4. Be accompanied by plans, diagrams, computation and
specifications and other data as required in Section 106
of this code.
5. State the valuation of any new building or structure or
any addition, remodeling or alteration to an existing
building.
6. Be signed by the applicant or the applicant's authorized
agent.
7. Give such other data and information as may be required
by the code official.
105.5 Permit approval. Before a permit is issued, the code
official, or an authorized representative, shall review and ap
prove all permitted uses:occupancies or structures. Where laws
or regulations are enforceable by other agencies or depart
ments, a joint approval shall be obtained from all agencies or
ADMINISTRATION
105.6 Permit issuance. The application, plans, specifica that permit when the permittee is unable to mnmence work
tions and other data filed by an applicant for a permit shall be within the time required by this section for good and satisfact*
reviewed by the code official,~ tfh e code officialf inds that the ry reasons. The code official may extend the time for action by
work described in an application for a permit and the plan, the permittee for a period not exceeding 180 days on written 1s
specifications and other data filed therewith conform to the re quest by the permittee showing that circumstances beyond the
quirements ofths code, the code official is allowed to issue a control of the permittee have prevented action from being tak-permit
to the applicant. en. No permit shall be extended more than once.
When the code official issues the permit, the code official
shall endorse in writing or stamp the plans and specifications
APPROVED. Such approved plans and specifications shall not
be changed, modified or altered without authorization from the
code official, and all work regulated by this code shall be done
in accordanc e with the approved plans.
105.7 Validity of permit. The issuance or granting of a per
mit or approval of plans, specifications and computations shall
not be construed to be a permit for, or an approval of, any viola
tion of any of the provisions of this code or of any other ordi
105.9 Retention of permits. Permits shall at all times be kept
on the premises designated therein and shall at all times be sub
iect to inspection by the code official or other authorized repre
sentative.
105.10 Revocation of permits. Permits issued under this
code may be suspended or revoked when it is determined by the
code official=
1. It is used by a person other than the person to whom the
permit was issued.
2. It is used for a location other than that for which the txr
nance of the jurisdiction. P mit was issued.
105.8 Expiration. Every permit issued by the code official 4. The permittee fails, refuses or neglects to comply with
under the provisions of this code shall expire by limtation and any order or notice duly served on him under the provi
become null and void ifthe building, use or work authorized by sions of this code within the time provided therein.
such permit is not commenced within 180 days from the date of 5. There has been any false statement or misrepresentation
such permit, or if the bullding, use or work authorized by such as to material fact in the application or plans on which the
permit is suspended or abandoned at any time after the work is
commenced for a period of 180 days. is issued in error or in violation of any
rovisions of this code.
2003 INTERNATIONAL URBAKWlLDLAND INTERFACE CODETM 3
ADMINISTRATION
The code official is allowed to, in writing, suspend or revoke cations and computations shall be retained by the code official
a permit issued under the provisions of this code whenever the for a period of not less than 90 days fiom date of completion of
permit is issued in error or on the basis of incorrect information the work covered therein; and one set of approved plans and
supplied, or in violation of any ordinance or regulation or any specifications shall be returned to the applicant, and said set
of the provisions of this code. shall be kept on the site of the bullding, use or work at aIl times
during which the work authorized thereby is in progress.
SECTION 106
PLANS AND SPECIFICATIONS
106.1 General. Plans, engineering calculations, diagrams
and other data shall be submitted in at least two sets with each
application for a permit. When such plans are not prepared by
an architect or engineer, the code official may require the appli
cant submitting such plans or other data to demonstrate that
state law does not require that the plans be prepared by a li
censed architect or engineer. The code official may require
plans, computations and specifications to be prepared and de
signed by an architect or engineer licensed by the state to prac
tice as such even if not required by state law.
Exception: Submission of plans, calculations, construction
inspection requirements and other data, if it is found that the
nature of the work applied for is such that reviewing of plans
is not necessary to obtain compliance with this code
106.2 Information on plans and spe
specifications shall be drawn to scale up
cloth and shall be of sufficient clarity to indicate the location,
nature and extent of the work proposed, and show in detad that
it will conform to the provisions of this code and all relevant
laws, ordinances, rules and regulations.
106.3 Site plan. In addition to the requirements
the International Buildinx Code, International Resi
Code, andjre department requirements,
topography, width and percent of grade of access roads,
landscape and vegetation details, locations of structures or
building envelopes, existing or proposed overhead utilities,
occupancy classification of buildings, types of imitiorr
resistant construction of buildings, structures and their
appendages, roof classificztion of buildings, and site water
supply systems, and nearest hydrant or fire protection
systems.
106.4 Vegetation management plans. When utilized by the
permit applicant pursuant to Section 502, vegetation manage
ment plans shall be prepared and shall be submitted to the code
official for review and approval as part of the plans required for
a permit. See Appendix B.
106.5 Fire protection plan. When required by the code off1
cia1 pmuant to Section 405, a fire protection plan shall be pre
pared and shall be submitted to the code official for review and
approved as a part of the plans required for a permit.
106.6 Other data and substantiation. When required by the
code official, the plans and specifications shall include classifi
cation of fuel loading, fuel model light, medium or heavy, and
substantiating data to verify classification of firsresistive veg
etation.
106.7 Retention of plans. One set of approved plans, specifi-
SECTION 107 ing such other hazards or appliances designated by the code
INSPECTION AND ENFORCEMENT official for the purpose of a s c e e g and causing to be cor
107.1 Inspection. rected any conditions that could reasonably be expected to
107.1.1 General. All construction or work for whch aper- pcauurpseo sfe o~fo bers c ocnotrdieb uanted t oo fi tasn syp orethaedr, loarw a noyr svtiaonldatairodn of the
mit is required by t h c~od~e s hall be subject to inspection by fire safety,
the code official and all such construction or work shall re
main accessible and exposed for inspection purposes until 107.1.3 Reinspections. To determine compliance with
approved by the code official. this code, the code official may cause a structure to be rein-
It shall be the duty of the permit applicant to cause the spected. A fee may be assessed for each inspection or rein-work
to remain accessible and exposed for inspection pur- spection when such portion of work for whch inspection is
plioasbeles. f Nore eitxhpeer nthsee ecnotdaeil eodff iinc itahle n roerm thoev ajul roisrd riecptiloacne smheanllt boef mcaalldeed. is not complete or when corrections called for are not
any material required to allow inspection. Reinspection fees may be assessed when the approved
plans are not readily available to the inspector, for failure to
toor boef aonth aeprp oraorsdv aian l aonfc ae svo iofo fla atnthi oienn jsu porefic stthdioeicn pt iroonv.i sIinononstps b eoecf ttihoins sc podres poorfr fofivociirda dle.e avciacteinssg ofrno tmhe p dlaantse rfeoqr uwirhinicgh t hine sappepcrtoiovanl i so fr ethqeu ecsotdeed
suming to give authority to violate or cancel the provisions -- -
of th~sco de or of other ordmances of the jurisdiction shall not To obtain a reinspection, the applicant shall pay the rein-be
valid. spection fee as set forth in the fee schedule adopted by the
A survey of the lot may be required the code official to jaudrdisitdiiocntiaol ni.n sWpehcetino rne oinf stpheec wtioonrk f eweisl lh baev e been assessed,t nhoe
verify that the mitigation features are provided and the build-
' d fees have been paid. - ing or structure is located in accordance with the approved
plans. %-
107.1.2 Authority to inspect. The code official shall in 107.2.1 Authorization to issue corrective orders and no-spect,
as often as necessary, buildings and premises, inc cia1 finds any building or premises
4 BANWILDLAND INTERFACE CODE^"
ADMINISTRATION
that are in violation of this code, the code official is authe low a hazard to exist or fail to take immediate action to abate
rized to issue corrective orders and notices.
107.2.2 Service of orders and notices. Orders and notices
authorized or required by this code shall be given or served
on the owner, operator, occupant or other person responsible
for the condition or violation either by verbal notification,
personal service, or delivering the same to, and leaving it
with, a person of suitable age and disaetion on the premises;
or, if no such person is found on the premises, by af3iing a
copy thereof in a conspicuous place on the door to the en-trance
of said premises and by mailmg a copy thereof to such
person by registered or certified mail to the person's last
known address.
Orders or notices that are given verbally shall be con-fumed
by service in writing as herein provided.
107.3 Right of entry. Whenever necessary to make an in
spection to enforce any of the p-ovisions of this code, or when
ever the code official has reasonable cause to believe that there
exists in any building or on any premises any condition that
makes such bullding orpremises unsafe, the code official is au
thorized to enter such building or premises at all reasonable
times to inspect the same or to perform any duty authorized by
thls code, provided that if such building or premises is occu
pied, the code official shall first present proper credentials and
request entry; and if such building or premises is unoccupied,
the code official shall first make a reasonable effort to locate the
owner or other persons having charge or control of the building
or premises and request entry.
&<::;& ;&qy pa
If such entry is refused, the code official shall have recourse
to every remedy provided by law to secure entry. Owners, oc
cupants or any other persons having charge, care or control o
any building or premises, shall, after proper request is made a
herein provided, promptly prrnit entry therein by the code of-ficial
for the purpose of inspection and examination pursuant to
this code.
*P%$F
107.4 Compliance with orders and notices.
107.4.1 General compliance. Orders and notices issued or
served as provided by this code shall be complied with by the
owner, operator, occupant or other person responsible for the
, condition or violation to which the corrective order or notice
pertains.
If the building or premises is not occupied, such corrective
orders or notices shall be complied with by the owner.
107.4.2 Compliance with tags. A building or premises
shall not be used when in violation of this code as noted on a
tag affixed in accordance with Section 107.4.1.
107.4.3 Removal and destruction of signs and tags. A
sign or tag posted or affixed by the code official shall not be
mutilated, destroyed or removed without authorization by
the code official.
107.4.4 Citations. Persons operating or maintaining an
occupancy, premises or vehicle subject to this code who a1
a hazard on such occupancy, premises or vehicle when or-dered
or notified to do so by the code official shall be guilty
of a misdemeanor.
107.4.5 Unsafe conditions. Buildings, structures or prem-ises
that constitute a fire hazard or are otherwise dangerous
to human Me, or whch in relation to existing use constitute a
hazard to safety or health or public welfare, by reason of in-adequate
maintenance, dilapidation, obsolescence, fire haz-ard,
disaster damage or abandonment as specified in this
code or any other ordinance, are unsafe conditions. Unsafe
buildings or structures shall not be used. Unsafe buildings
are hereby declared to be public nuisances and shall be
abated by repair, rehabilitation, demolition or removal, pur-suant
to applicable state and local laws and codes.
INTERNATIONAL URBANWILDLAND INTERFACE CODETM
SECTION 108
CERTIFICATE OF COMPLETION
No building, structure or premises shall be used or occupied,
and no change in the existing occupancy classification of a
building, structure, premise or portion thereof shall be made
until the code official has issued a certificate of completion
therefor as provided herein. The certificate of occupancy shall
not be issued until the certificate of completion indicating that
the project is in compliance with this code has been issued by
the code official.
Issuance of a certificate of occupancy shall not be construed
as an approval of a violation of the provisions of th~cso de or of
other pertinent laws and ordinances of the jurisdiction. Certifi
cates presuming to give authority to violate or cancel the provi-sions
of this code or other laws or ordinances of the jurisdiction
shall not be valid.
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE^^
CHAPTER 2
DEFINITIONS
SECTION 201 has been treated, cleared or modlfied to slow the rate and inten-
GENERAL sity of an advancing wildfre and to create an area for fre sup-pression
operations to occu:
201.1 Scope. Unless otherwise expressly stated, the follow
ing words and terms shall, for the purposes of this code, have A vehicular ingress and egress mute that serves
the meanings shown in this chapter. no more than two buildmgs or structures, not including acces-sory
structures, or more than five dwelling units.
201.2 Interchangeability. Words stated in the present tense
include the future; words stated in the masculine gender in FIRE AREA. The floor area, in square feet (square meters),
clude the feminine and neuter. and the singular number in used to determine the adequate water supply.
"-XX?Bmfl
cludes the plural and the plurai the singular. FIRE CHIEF. The chief officer or the chief officer's authe
rized representative of the fre department serving the iurisdic -
201.3 Terms defined in other codes. Where terms are not tion,
defined in this code and are defined in other international 3%~ W~%WS
codes, such terms shall have the meanings ascribed to them as FkE PROTECTION PLAN. A document prepared for a
in those codes.
201.4 Terms not defined. Where terms are not defined e fire problems created by the project or development,
through the methods authorized by this section, such terms e purpose of reducing impact on the community's fre
shall have their ordinarily accepted meanings such as the con
text implies. WEATHER. Weather conditions favorable to the igni-of
fire. In wildfires, this generally in-es
combined with strong winds and low
SECTION 202
DEFINITIONS NCERATED CONSTRUCTION. The use
ACCESSORY STRUCTURE. A bullding systems in the design and construction of a
to shelter or support any material, equip
occupancy other than a habitable building.
k&yg$$@- buildings or structures to the urbmwildland interface area.
APPROVED. Approval by the code official FLAME SPREAD RATING. As used herein refers to view, investigation or tests conducted by the rating obtained according to tests conducted as specified by a
nationally standard,
FUEL BREAK. An area, strategically located for fighting am
for Or ticipated fires, where the native vegetation has been perma-nently
modified or replaced so that frres burning into it can be
er designated au- more easily controlled. Fuel breaks divide freprone areas into
charged with the administration and enforcement ofthe smaller areas for easier fre control and to provide access for
International Building Code, or the building official's duly au- fighting.
thorized representativ FUEL, HEAVY. See fuel models B, G. 0, J K and L as
CERTIFICATE OF COMPLE%ON. Written documenta
described in Appendix D.
tion that the project or work for which a permit was issued has FUEL, See C, L, Nj and
been com~letedin conformance with requirements of this described in D.
code. FUEL, MEDIUM. See fuel models D, E, F, H, P, Q and
CODE OFFICIAL. The official designated by the jurisdiction U as described in Appendix D.
to interpret and enforce this code, or the code official's autho- FUEL MODIFICATION. A method of modifying fuel load
rized representative, including f i e districts. by reducing the amount of nonfieresistive vegetation or alter-ing
the type of vegetation to reduce the fuel load.
CRITICAL FIRE WEATHER. A set of weather conditions
(usually a combination of low relative humidity and wind) FUEL MOSAIC. A fuel modification system that provides for
whose effects on fire behavior control difficult and the creation of and boundaries to reduce the
threaten fre fighter safety. visual and ecological impact of fuel modification.
DEFENSIBLE SPACE. An area either natural or man-made,
where material capable of allowing a fire to spread unchecked
2003 INTERNATIONAL URBAN-WILDLAND INTERFACE CODETM
FUEL-LOADING. The oven-dry weight of fuels in a mataial shall be classed as noncombustible that is subject to in-given
area, usually expressed in pounds per acre (Ibla) crease in combustibility or flame-spread rating, beyond the
(kglha). Fuel loading may be referenced to fuel size or IImits herein established, through the effects of age, moisture or
timelag categories, and may include surface fuels or total other atmospheric condition.
fuels.
NONCOMBUSTIBLE ROOF COVERING. One of the fol-
GREENBELT. A fuel break designated for a use otherthan lowing:
fire protection. 1. Cement shmgles or sheets.
HAZARDOUS MATERIALS. As defined in the Intemation- 2. Exposed concrete slab roof.
a1 Fire Code. 3. Ferrous or copper shingles or sheets.
HEAVY TIMBER CONSTRUCTION. As described in the 4. Slate shingles.
International Building Code. 5. Clay or concrete roofing tile.
IGNITION-RESISTANT CONSTRUCTION, CLASS 1. A
ering of noncombustible material.
schedule of additional requirements for construction in urban- S errain from the horizontal; the num-wildland
interface areas based on extreme fie hazard. ber of feet (meters) rise or fall per 100 feet (30 480 mm) me*
horizontally, expressed as a percentage.
IGNITION-RESISTANT CONSTRUCTION, CLASS 2. A e~rn?~ a % k
schedule of additional requirements for construction in TURE. That which is built or constructed, an edifice
urban-wildland interface areas based on high f i e hazard. ing of any kind, or any piece of work artificially built up
f parts joined together in some manner.
IGNITION-RESISTANT CONSTRUCTION, CLASS 3. A
schedule of additio .The primary and secondary branches grow-
INSURANCE SERVICES OFFICE (ISO). An ag
fire insurance rates based on a grading
that incorporates evaluation of fire fighting resources and cap
bilities.
which exterior walls are
and where the smallest
wood member is at least
MULULAYERED GLAZED P
semblies that consist of two or
panels installed parallel to each other, having a sealed air gap in
between, a frame designed to fill completely the win- WILDLAND. An area in which development k
dew or door in which the assembly is intended to be nonexistent, except for roads, railroads, power lines and similar
installed. facilities.
""~Bs, =. NONCOMBUSHBLE~Aa~p plied to buildlng construction
material means a material that, in the form in which it is used, is
either one of the following:
1. Material of which no part will ignite and bum when sub
jected to fire. Any material conforming to ASTM E 136
shall be considered noncombustible within the meaning
of this section.
2. Material having a structural base of noncombustible ma
terial as defined in Item 1 above, with a surfacing rnateri
a1 not over 118 inch (3.2 mm) thck, which has a flame-spread
rating of 50 or less. Flame-spread rating as used
herein refers to rating obtained according to tests con
ducted as specified in ASTM E 84.
"Noncombustible" does not apply to surface finish materi-als.
Material required to be noncombustible for reduced clear-ances
to flues, heating appliances or other sources of high tem-perature
shall refer to material conforming to Item 1. No
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE^^
CHAPTER 3
URBAN-WILDLAND INTERFACE AREAS
SECTION 301
GENERAL
301.1 Scope. The provisions of this chapter provide method
ology to establish and record urban-wildland interface areas
based on the findings of fact.
301.2 Obiective. The oblectlve of thls chapter is to provide
slmple baselme cntena for d e t e m g urban-wildland inter
face areas.
SECTION 302
URBAN-WILDLAND INTERFACE AREA
DESIGNATIONS
302.1 Declaration. The legislative body shall declare the
urban-wildland interface areas within the jurisdiction. The
urban-wildland interface areas shall be based on the findings of
fact (see Appendix E). The urban-wildland interface area
boundary shall correspond to natural or man-made features and
include a minimum of 640 acres (259 ha) unless a smaller area
is approved by the legislative body throu~gha n assessment of
fuel types and physical characteristics affecting wildland fire
behavior.
302.2 Mapping. The urban-wildland interface areas shall be
recorded on maps and filed with the clerk of the jurisdiction.
These areas shall become effective immediately thereafter.
302.3 Review of urban-wildland interface areas. The code
official shall reevaluate and recommend modification to the
urban-wildland interface areas in accordance with Section
302.1 on a threeyear basis or more frequently as deemed nec
2003 INTERNATIONAL URBAKWILDLAND INTERFACE CODETM
CHAPTER 4
URBAN-WILDLAND INTERFACE AREA REQUIREMENTS
SECTION 401
GENERAL
401.1 Scoae. Urban-wildland interface areas shall be vro
vided with emergency vehicle access and water supply ac
cordance with this chapter.
with markings in accordance with Sections 403.4 and 403.5,
respectively.
SECTION 403
ACCESS
401.2 Objective. The objective of this chapter is to establish
the minimum requirements for emergency vehcle access and 403.1 Restricted access. Where emergency vehicle access is
water supply for buildings and structures located in the urban restricted because of secured access roads or driveways or
wildland interface aeas. where immediate access is necessary for lifesaving or fire-fighting
vuruoses. the code official is authorized to require a
401.3 General safety precautions. General safety precau key box to be installed in an accessible location. The key box
tions shall be in accordance with thls chapter. See also Appen shall be of a type approved by the code official and shall contain
&A. keys to gain necessary access as required by the code official.
403.2 Driveways. Driveways shall be provided when any
portion of an exterior wall of a bullding is located more than
SECTION 402 150 feet (45 720 mm) from a fire apparatus access road.
APPLICABILITY Driveways shall provide a minimum unobstructed width of
402.1 Subdivisions. 12 feet (3658 mm) and a minimum unobstructed height of
"A 13 feet 6 inches (41 15 mm). Driveways in excess of 150 feet
402.1.1 Access. Subdivisions, as determined by this (45 720 mm) in length shall be provided with turnarounds.
jurisdiction, shall be provided with fire apparatus access Driveways in excess of 200 feet (60 960 mm) in length
roads in accordance with the IntemationalFire Code and ac 20 feet (6096 mm) in width shall be provided
cess requirements in accordance with Section 403. addition to turnarounds.
402.1.2 Water supply. New subdivisions as determined ay shall not serve in excess of three dwehg units.
by h jurisdiction shall be provided with water supply in ac
cordance with Section 404. Exception: When such driveways meet the requirements for
A,'*.*w<* easy m@ an access road in accordance with the International Fire
402.2 Individual structures. Code or as required by thejre district.
k>&gg,g,
402.2.1 Access. Individual structur Driveway turnarounds shall have inside turning radii of not
structed or relocated into or w i t h urbanwildland interface less than 30 feet (9144 mm) and outside turning radii of not less
areas shall be provided with fxe apparatus access in accor
dance with the International Fire Code and driveways in ac
cordance with Section 403.2. Marking of fire protection
equipment shall be provided in accordance with Section
403.5 and address markers shall be provided in accordance
with Section 403.6.
402.2.2 Water supply. Individual structures hereafter
constructed or relocated into or within urbnwildland inter
face areas shall be provided with a conforming water supply
in accordance with Section 4$4.
Exceptions:
1. Structures constructed to meet the requirements for
the class of ignition-resistant construction speci
fied in Table 503.1 for a nonconforming water sup
ply.
2. Buildings containing only private garages, car
ports, sheds and agricultural buildmgs with a2floor
area of not more than 600 square feet (56 m ).
402.3 Existing conditions. Existing buildings shall be pro
vided with address markers in accordance with fre district
standards.
than 45 feet (1 3 7 16 rnm). Driveways that connect with a road
or roads at more than one point may be considered as having a
turnaround if all changes of direction meet the radii require
ments for dnveway turnarounds.
Driveway turnouts shall be an all-weather road surface at
least 10 feet (3048 mm) wide and 30 feet (9144 mm) long.
Driveway turnouts shall be located as required by the code 06
cial.
Vehicle load limits shall be posted at both entrances to
bridges on driveways and private roads. Design loads for
bridges shall be established by the code official.
403.3 Fire apparatus access road. Fire apparatus access
roads shall be all-weather roads with a minimum width of 20
feet (6096 rnm) and a clear height of 13 feet 6 inches (4 1 15 md;
shall be designed to accommodate the loads and turning radii
for fire apparatus; and have a gradient negotiable by the
specific fire apparatus normally used at that location
w i t h the jurisdiction. Dead-end roads in excess of 150 feet
(45 720 mm) in length shall be provided with turnarounds as
approved by the code official. An all-weather road surface shall
be any surface material acceptable to the code official that
2003 INTERNATIONAL URBAN-WILDLAND INTERFACE CODETM 11
URBANWILDLAND INTERFACE AREA REQUIREMENTS
would normally allow the passage of emergency service ve- (305 m) from the bullha and be approved by the code official.
hicles typically used to respond to that location w i b the iuris - The distance shall be measured along an unobstructed line of
diction. travel.
Exception: Access roads as approved by the fire district.
403.4 Marking of roads. Approved signs or other approved
notices shall be provided and maintained for access roads and
driveways to identify such roads and prohibit the obstruction
thereof or both.
All road identification signs and supports shall be of non-combustible
materials. Signs shall have minimum 4inch-high
(102 mm) reflective letters with 112 inch (12.7 mm) stroke on a
contrasting 6inch-high (152 mm) sign. Road identification
signage shall be mounted at a height of 7 feet (2 134 mm) from
the road surface to the bottom of the sign.
403.5 Marking of fire protection equipment.
tion equipment and fire hydrants shall be clearly i
manner approved by the code official to prevent obstruction.
403.6 Address markers. All buildings shall have a perma
nently posted address, which shall be placed at each driveway
entrance and be visible fiom both directions of travel along the
road. In all cases, the address shall be pos
construction and
shall be visible and legible fiom the road on which the address
is located.
Address signs along oneway roa
both the intended direction of travel and the opposit
Where multiple addresses are required at a single driveway,
they shall be mounted on a single post, and additional signs
shall be posted at lo
Where a roadway provides access solely to a single commer-cial
or industrial business, the address sign shall be placed at the
nearest road intersection providing access to that site.
WEk
403.7 Grade. The gradient for fire apparatus access roads
and driveways shall not exceed 12% or the maximum
approved by the code official
WATER SUPPLY
404.1 General. When provided in order to qualdj as a con
forming water supply for the purpose of Table 503.1 or as re
quired for new subdivisions in accordance with Section
402.1.2, an approved water source shall have an adequate water
supply for the use of the fire protection service to protect build
ings and structures from exterior fire sources or to suppress
structure fires w i t h the urba~wildland interface area of the
jurisdiction in accordance with thls section.
Exception: Buildings containing only private garages, car-ports,
sheds and agricultural buildinF s with a floor area of not more than 600 square feet (56 m).
404.2 Water sources. The point at whlch a water source is
available for use shall be located not more than 1,000 feet
Water sources shall com~lvw ith the following: accordance with all codes and ordinances enforced by this ju-
A < -
1. ~ ~water sou-rces shall~ have a m~ uumsdable ~risdiction. Pumper access points shall not require the pumper
water volume as determined by the adequate water sup apparatus to obstruct a road or driveway.
ply needs in accordance with Section 404.5. f i s water 404.4 Hydrants. All hydrants shall be designed and
source shall be equipped with an approved hydrant. The constructed in accordance with nationally recognized stand
water level of the water source shall be maintained by ards. The location and access shall be approved by the code of
rainfall, water pumped from a well, water hauled by a ficial.
tanker> or by seasonal'& water of a or The 404.5 Adequate water supply. Adequate water supply shall
design, construction, location, water level maintenance,
access, and access maintenance of man-made water be determined for purposes of initial attack and flame front
sources shall be approved by the code official. control as follows:
2. Natural water sources shall have a minimum annual wa 1. One- and two-family dwellings. The required water
ter level or flow sufficient to meet the adequate water supply for one- and twefamily dwellings having a fire
supply needs in accordance with Section 404.5. This wa area that does not exceed 3,600 square feet (334 m ) shall
ter level or flow shall not be rendered unusable because be 1,000 gallons per minute (63.1 Lls) for a m u m
of freezing. Thls water source shall have an approved duration of 30 minutes. The required water supply for
draft site with an approved hydrant. Adequate water flow one- and twefamily dwellings having a fire area in ex
and rights for access to the water source shall be ensured cess of 3,600 square feet (334 m2) shall be 1,500 gallons
in a form acceptable to the code official. per minute (95 Us) for a minimum duration of 30 min
utes.
404.3 Draft sites. Approved draft sites shall be provided at ~mEa.
all natural water sources intended for use as fire protection for eption: A reduction in required flow rate of 50
compliance with this code. The design, construction, location,
access and access maintenance of draft sites shall be approved
by the code official.
The draft site shall have emergency vehicle access from an
access road in accordance with Section 402. The pumper access
side a conforming acc
cess driveways sh
12
Exception: A reduction in required flow rate of up to
75 ~ercenta. s a ~ ~ r o vbevd t he code official, is al-
URBAKWILDLAND INTERFACE AREA REQUIREMENTS
SECTION 405
FIRE PROTECTION PLAN
lowed b'dmg provided with an%'proved 405.1 General. When required by the code official, a fire
paulyt osmhaaltli cn sopt rbinek lleesr ss ythsatenm 1. ,T5h0e0 rgeasluloltnins gp wera mterin suutep protection plan shall be prepared.
(94.6 Ws). 405.2 Content. The ulan shall be based uuon a site-s~ecific
wildfire risk assessment that includes co&iderations of loca
404.6 Fire department. The water supply required by this tion, topomaphy, aspect, flammable vegetation, climatic con
code shall only be approved when a fire-department-rated ditions and fue hlstoIy, The plan shall address water supply, ac Class 9 or better in accordance with IS0 Commercial Rating cess, building and fireresistance fire
Service, 1995, is available. protection systems and equipment, defensible space and vege
404.7 Obstructions. Access to all water sources required by tation management.
this code shall be unobstructed at all times. The code official 405.3 cost. The cost of fire protection plan preparation and
or fire district shall not be deterred or hindered from gaining review shall be the responsibility of the applicant.
immediate access to water source equipment, fire protection
ea.u i.~ menot r hvdrants. 405.4 Plan retention. The fire protection plan shall be re tamed by the code official.
404.8 Identification. Water sources, draft sites, hydrants and
fire protection equipment and hydrants shall be clearly Identi
fied m a manner approved by the code official to ~dentlfyl oca
t~onan d to prevent obstruction by parking and other obstruc
tlons.
404.9 Testing and maintenance. Water sources, draft sites
hydrants and other fire protection equipment required by this' &!
code shall be subject to periodic tests as required by the code "
official. All such equipment installed under the provisions of
this code shall be maintained in an operative condition at all
times and shall be repaired or replaced where defective. Addi
tions, repairs, alterations and servicing of such f ~perot ection
equipment and resources shall be in accordance with approved
standards.
404.10 Reliability.
.a&&-
404.10.1 Obiective. The obiective
crease the reliability of water supplies by reducing the expo
sure of vegetative hels to electrically powered systems.
404.10.2 Clearance of fuel. Defensible space shall be pro
vided around water tank structures, water supply pumps and
pump houses in accordance with Section 603.
404.10.3 Standby power. Stationary water supply facili
ties w i t h the urban-wildland interface area dependent on
electrical power to meet adequate water supply demands
shall provide standby power systems in accordance with the
National Electric Code to ensure that an uninterrupted
water supply is maintained. The standby power source shall
be cqable of providing power for a minimum of two
hours.
Exceptions:
1. When approved by the code official, a standby
power supply is not required where the primary
power service to the stationary water supply facili-ty
is underground, or capable of gravity flow.
2. A standby power supply is not required where the
stationary water supply facility serves no more than
one single-family dwelling.
CHAPTER 5
SPECIAL BUILDING CONSTRUCTION REGULATIONS
SECTION 501 interface areas shall be established in accordance with Table
GENERAL 502. See also Appendix C.
501.1 Scope. Buildmgs and structures shall be constructed in The fire hazard severity identified in Table 502 is allowed to
accordance with the International Building- Code, International be reduced by implementing a vegetation management plan in
Residential Code and thls code. accordance with Appendix B.
Exceptions:
1. Accessory structures not exceeding 200 square feet A,&h
or the International Residential Code SECTION 503
requirements in floor area when located at least IGNITION-RESISTANT CONSTRUCTION
10 feet from buildings containing habitable 503.1 Gene ildings and structures hereafter con-spaces.
strutted, modified or relocated into or within urban-wildland
2. Agricultural buildings at least 10 feet interface areas shall meet the construction requirements in ac -
from buildings containing habitable spaces. cordance with Table 503.1. Class 1, Class 2 or Class 3 ignition-resistant
construction shall be in accordance with Sections 504,
501.2 Objective. The objective of this chapter is to establish r1,.if,505 and 506, respectively,
minimm standards to locate, design and construct buildings 2s*~$g\ "&3..$?$$<.L <F~?.*? '-I$@)
and structures or portions thereof for the protection of life and &"5;i:' p.s$&A.,>:N $: z$j$- property, to resist damage from wddfires, and to mitigate build
ing and structure fues from spreading to wildland fuels. The
SECTION 504
minimum standards set forth in this chapter vary with the criti CLASS I IGNITION-RESISTANT CONSTRUCTION
cal fire weather, slope and fuel type to provide increased &$&? 504.1 al. Class 1 ignition-resistant construction shall
protection, above the requirements set forth in the Internation li@4b .
e m accordance with Section 504.
a1 Building Code and International Residential Code, from
the various levels of hazards. 504.2 Roof covering. Roofs shall have a Class A roof cover
A roof assembly. For roof coverings where the
a space between the roof covering a d roof deck
at the eave ends shall be fuestopped to preclude
s or embers.
TABLE 502 FIRE
HAZARD SEVERITY
= 1 Daya 2 to 7 Days" I = 8 Days"
Slope (%) Slope (%) Slope (%)
a Days per annum.
b. When required by the code official, fuel classification shall be based on the histor~caflu el type for the area.
E = Extreme hazard.
H = High hazard.
M = Moderate hazard.
FUEL MODEL '
Light fuel
Medium fuel
Heavy fuel
= 61
M
H
H
= 40
M
M
H
= 40
M
H
H
41-60
M
M
H
= 40
M
E
E
41-60
M
H
E
41-60
M
E
E
= 61
M
H
E
= 61
H
E
E
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODETM
SPECIAL BUILDING CONSTRUCTION REGULATIONS
TABLE 503.1 IGNITION-RESISTANT
CONSTRUCTIONa
d Conformance based on Section 404.
DEFENSIBLE SPACE^
Nonconforming
Conforming
1.5 x Conforming
e. A nonconforming water supply is any water system or source that does not comply with Section 404, including situations where there is no water supply for
structure protect~on or fire suppression
504.3 Protection of eaves. Eaves and soffits shal
a Access shall be in accordance with Section 402.
b. Subdivisions shall have a conforming water supply ~n accordance with Section 402.1.
IR I = Ignitiomresistant construction in accordance with Section 504.
IR 2 = Ignitiorrresistant construction in accordance with Section 505.
IR 3 = Ignitiorrresistant construction in accordance with Section 506.
N.C. =Exterior walls shall have a fireresistance rating ofnot less than I -hour and the exterior surfaces of such walls shall be noncombustible. Usage of log wall
construction is allowed. - c. Conformance based on Section 603.
FIRE HAZARD SEVERITY
tected on the exposed underside by materials approved for a
minimum of 1- hour f~eresistanceratedco nstruction. Fascias ~ x p m
are required and must be protected on the backside by materials 4e**&
approved for a minimum of 1-hour fire-resistance-rated
construction or 2-inch (5 1 mm) nominal dimension lumber.
504.4 Gutters and downspouts. Gutters and downspouts
shall be constructed of noncombustible material.
504.5 Exterior walls. Exterior walls of buildings or struc
tures shall be constructed with materials approved for a mini
mum of 1-hour fre-resistancerated construction on the exteri
or side or constructed with approved noncombustible
materials.
- v ~ ~
Exception: Heavy timber or log wall construction.
K3$5@#& &E@
Such material shall extend fkom the top of the foundation to
the underside of the roof sheath'
504.6 Unenclosed underfloor protection. Buildin~s or
structures shall have all undeffloor areas enclosed to the ground
with exterior walls in accordance with Section 504.5.
Exception: Complete enclosure may be omitted where the
underside of all exposed floors and all exposed structural
columns, beams and supporting walls are protected as re
quired for exterior 1-hour fireresistance-rated construction
or heavy timber construction.
Moderate Hazard
Water ~upplf
504.7 Appendages and projections. Unenclosed accessory
structures attached to buildings with habitable spaces and pro
jections, such as decks, shall be a minimum of 1-hour firs
resistancerated construction, heavy timber construction or
constructed of approved noncombustible materials.
~onformingd
IR 2
IR 3
Not Required
on con for mind
IR I
IR 2
IR 3
High Hazard
Water Supplf
Conformit$
IR I
IR 2
IR 3
Exireme Hazard
Water Supply"
Nonconfonnin$
IR 1
N.C.
IR 1
IR 2
m W J d
IR 1
N.C.
IR1
IR2
Nonconfonnind
Not Permitted
IR 1
N.C.
IR 1
Exterior glazing. Exterior windows, window walls and
glazed doors, windows within exterior doors, and skylights
shall be tempered glass, multilayered glazed panels, glass
block or have a fire protection rating of not less than 20 min
utes.
504.8 Exterior doors. Exterior doors shall be approved no3*
combustible construction, solid core wood not less than 1 14
inches thick (45 m), or have a fire protection rating of not less
than 20 minutes. Windows within doors and glazed doors shall
be in accordance with Section 504.8.
Exception: Vehicle access doors.
504.10 Vents. Attic ventilation openings, foundation or un
derfloor vents, or other ventilation openings in vertical exterior
walls and veTts through roofs shall not exceed 144 square inch
es (0.0929 m ) each. Such vents shall be covered with noncom
bustible corrosiorrresistant mesh with openings not to exceed
114 inch (6.4 rnm).
Attic ventilation openings shall not be located in soffits, in
eave overhangs, between rafters at eaves, or in other overhang
areas. Gable end and dormer vents shall be located at least 10
feet (3048 mm) from property lines. Underfloor ventilation
openings shall be located as close to grade as practical.
504.11 Detached accessory structures. Detached accessory
structures located less than 50 feet (15 240 mm) from a build
ing containing habitable space shall have exterior walls
constructed with materials approved for a minimum of 1-hour
fireresistance-rated construction, heavy timber, log wall
construction or constructed with approved noncombustible
materials on the exterior side.
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE"
SPECIAL BUILDING CONSTRUCTION REGULATIONS
When the detached structure is located and constructed so constructed with approved noncombustible materials.
that the structure or any portion thereof projects over a de-scending
slope surface greater than 10 percent, the area below
the structure shall have all underfloor areas enclosed to w i t h 6
inches (152 rnm) of the ground, with exterior wall construction
in accordance with Section 504.5 or underfloor protection in
accordance with Section 504.6.
Exception: The enclosure may be omitted where the under-side
of all exposed floors and all exposed structural columns,
beams and supporting walls are protected as required for ex-terior
1-hour firsresistancsrated construction or heavy-timber
construction.
See Section 504.2 for roof requirements.
SECTION 505
CLASS 2 IGNITION-RESISTANT CONSTRUCTION
505.1 General. Class 2 ignition-resistant construction shall
be in accordance with Section 505.
505.2 Roof covering. Roofs shall have at least a Class B roof
covering, Class B roof assembly or an approved noncombus-tible
roof covering. For roof coverings where the profile allows
a space between the roof covering and roof decking, the space
at the eave ends shall be firestopped to preclude entry of flames
or embers.
505.3 Protection of eaves. Combustible eaves, fascias and
soffits shall be enclosed with solid materials with a minimum
thickness of '14 inch (19 rnm). No exposed rafter tails shall be
permitted unless constructed of heavy timber materials.
505.4 Gutters and downspouts. Gutters and downspouts
shall be constructed of noncombustible material.
505.5 Exterior walls. Exterior walls of buildings or struc
tures shall be constructed with materials approved for a mini
mum of 1-hour fre-resistancerated construction on the exteri
or side or constructed with approved noncombustible
materials.
"TBB& A"%k%w
Exception: Heavy timber or lo wall construction.
X k B 9 V
Such material shall extend from the top of the foundation to
the underside of the roof sheathing.
505.6 Unenclosed underfloor protection. Buildings or
structures shall have all underfloor areas enclosed to the
ground, with exterior walls in accordance with Section 505.5.
Exception: Complete enclosure may be omitted where the
underside of all exposed floors and all exposed structural
columns, beams and supporting walls are protected as re-quired
for exterior I-hour fireresistance-rated construction
or heavy timber construction.
505.7 Appendages and projections. Unenclosed accessory
structures attached to buildings with habitable spaces and pro
jections, such as decks, shall be a minimum of 1-hour firsre
sistance-rated construction, heavy timber construction or
505.8 Exterior glazing. Exterior windows, window walls and
glazed doors, windows within exterior doors, and skylights
shall be tempered glass, multilayered glazed panels, glass
block or have a fire-protection rating of not less than 20
minutes.
505.9 Exterior doors. Exterior doors shall be approved norr
co3mbustible construction, solid core wood not less than
1 14-inches thick (45 mm), or have a fire protection rating of
not less than 20 minutes. Windows within doors and glazed
doors shall be in accordance with Section 505.8.
ing containing habitable space shall have exterior walls
constructed with materials approved for a minimum of 1-hour
fire-resistance-rated construction, heavy timber, log wall
construction, or constructed with approved noncombustible
material on the exterior side.
When the detached structure is located and constructed so
that the structure or any portion thereof projects over a de-scending
slope surface greater than 10 percent, the area below
the structure shall have all underfloor areas enclosed to within 6
inches (152 mm) of the ground, with exterior wall constmction
in accordance with Section 505.5 or underfloor protection in
accordance with Section 505.6.
Exception: Vehicle access doors. Exception: The enclosure may be omitted where the under-
505.10 Vents. Attic ventilation openings, foundation or un side of all exposed floors and all exposed structural columns,
derfloor vents or other ventilation openings in vertical exterior beams and supporting walls are protected as required for ex-walls
and vents through roofs shall not exceed 144 square inch terior 1-hour fire-resistancerated construction or heavy-es
(0.0929 m2) each. Such vents shall be covered with noncom timber const,raeu*ebcw tion.
bustible corrosio~resistantm esh with openings not to exceed sees ection 505.2 for roof requirements,
114 inch (6.4 mm).
Attic ventilation openings shall not be located in soffits, in
eave overhangs, between rafters at eaves, or in other overhang SECTION 506
areas. Gable end and dormer vents shall be located at least 10 CLASS 3 IGNITION-RESISTANT CONSTRUCTION
feet (3048 mm) from property lines. Underfloor ventilation
openings shall be located as close to grade as General. Class 3 ignition-resistant construction shall
e with Section 506.
i" :. .*.*- "'. +. '.*< ",
<@?
SPECIAL BUILDING CONSTRUCTION REGULATIONS
506.2 Roof covering. Roofs shall have at least a Class C roof
covering, Class C roof assembly or an approved noncombus-tible
roof covering. For roof coverings where the profde allows
a space between the roof covering and roof decking, the space
at the eave ends shall be firestopped to preclude entry of flames
or embers.
506.3 Unenclosed underfloor protection. Buildings or
structures shall have all underfloor areas enclosed to the ground
with exterior walls.
Exception: Complete enclosure may be omitted where the
underside of all exposed floors and all exposed structural
columns, beams and supporting walls are protected as re
quired for exterior I-hour fire-resistance-rated construction
or heavy timber construction.
506.4 Vents. Attic ventilation openings, soffit vents, founda
tion or underfloor vents or other ventilation openings in vertical
exterior walls and vent~~througroho fs shall not exceed 144
square inches (0.0929 m ) each. Such vents shall be covered
with noncombustible corrosion-resistant mesh with openings
not to exceed 114 inch (6.4 mrn).
SECTION 507
REPLACEMENT OR REPAIR OF ROOF COVERINGS
The roof covering on buildings or structures in existence prior
to the adoption of this code that are replaced cr have 25 percent
or more replaced in a 12-month period shall be replaced with a
roof covering required for new construction based on the type
of ignition-resistant construction specified in accordance with
Section 503.
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE
CHAPTER 6
FlRE PROTECTION REQUIREMENTS
SECTION 601
GENERAL
601.1 Scope. The provisions of h s chapter establish general
requirements for new and existing buildings, structures and
premises located w i t h urbmwildland interface areas.
601.2 Objective. The objective of this chapter is to establish
minimum requirements to mitigate the risk to life and property
from wildland fire exposures, exposures from adjacent struc
tures and to mitigate structure fires from spreading to wildland
fuels.
SECTION 602
AUTOMATIC FlRE SPRINKLER SYSTEMS
modification distance shall not be less than 10 feet (9144
rnm) or to the property line, whichever is less. Distances
specified in Table 603.2 shall be measured along the grade
from the perimeter or projection of the building or structure as
shown in Figure 603.2. Distances specified in Table 603.2
may be increased by the code official because of a sits
specific analysis based on local conditions and the fire
protection plan.
Persons owning, leasing, controlling, operating or maintain-ing
buildings or structures requiring defensible spaces are
responsible for modifying or removing nonfire-resistive vegs
tation on the property owned, leased or controlled by said per-rnn
-2- - r e w v:- 'x,
,,wdr vs<m
Trees are allowed within the defensible space, provided the
&$horizontal distance between crowns of adjacent trees and
An approved automatic fire spdsysteem shrall be installed 3 crowns of trees and structures, overhead eleitncal facilities or
in all occupancies in new buildings as required by the fire unmodified fuel is not less than 10 feet (3048 mm). Deadwood
and building codes. The installation of the automatic 11 be regularly removed from trees.
a1 vegetative fuels or cultivated ground
recognized standards. grass, ivy, succulents or similar plants are
defensible space.
Exception: Table 603.2 may be modified by the fire
district.
FIGURE 603.2 MEASUREMENTS OF FUEL
MODlFlCATlON DISTANCE
2003 INTERNATIONAL URBAKWILDLAND INTERFACE CODETM 19
FIRE PROTECTION REQUIREMENTS
EXCEPTION: Table 603.2 may be modified by the fi re district.
SECTION 604
MAINTENANCE OF DEFENSIBLE SPACE
604.1 General. Defensible spaces required by Section 603 SECTION 607
shall be maintained in accordance with Section 604. STORAGE OF FIREWOOD AND COMBUSTIBLE
MATERIALS
604.2 Modified area. Nonfue-resistive vegetation or growth A
be kept clear ofbuildings or structures, in accordance with Firewood and combustible material shall not be stored in unerr
section 603, in such a manner as to provide a clear area for fire closed spaces beneath buildings or structures, cr on decks or
suppression operations.
vegetative material
and structures.
the trees.
of the outlet of a chimney shal
mum horizontal clearance of 1
Deadwood and litter shall be
Chnnneys serving fireplaces, barbecues, incinerators or dece
rative heating appliances in which solid or liquid he1 is used,
shall be provided with a spark arrester. Spark arresters shall be
constructed of woven or welded wire screening of 12 USA
standard gage wire (0.1046 inch) (2.66 mm) having openings
not exceeding 112 inch (12.7 mm];. ,*sVI% *s*&>fr**.hw
The net free area of the spark arrester shall not be less than
four times the net free area of the outlet of the chimney.
SECTION 606
LIQUEFIED PETROLEUM GAS INSTALLATIONS
606.1 General. The storage of LP-gas and the installation
and maintenance of pertinent equipment shall be in accordance
with the International Fire Code or, in the absence thereof, rec
ognized standards.
606.2 Location of containers. LP-gas containers shall be
located within the defensible space in accordance with the
International Fuel Gas Code.
a
a
a
under eaves, canopies or other projections or overhangs. When feet (4572 mm).
a required by the code official, storage of fxewood and combus-tible
material stored in the defensible space shall be located a Firewood and not for consumption On
of 20 feet (6096 mm) from stnlctures and separated the premises shall be stored so as to not pose a hazard. See
a from the crown of trees by a minimum horizontal distance of 15 Appendix A.
e 20 2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE
CHAPTER 7
REFERENCED STANDARDS
This chapter lists the standards that are referenced in various sections of thls document. The standards are listed herein by the pre
mulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of this document
that reference the standard.
AS TM ASTM international I 00 Ban Harbor Drivr wen
Conshohocken, PA 19428-2959
Standard
reference
Referenced in
code section
number Title number
E 136-99 Test Method for Behavior of Materials in a Vertical Tube Fumace,,at 750 "C ....................L..~~~.~~.......................................2..0.2.. ..
E 84- 01 Test Methods for SurfacaBurning Characteristics of Building Materials ............................................................................. 202
ICC International Code Council
5203 Leesburg Pike, Suite 600
Falls Church, VA 22041 -3401
Standard Referenced in
reference code section
number Title number
ICC EC ICC Electrical CodeTM -Administrative Provisions .................................................................................................. 404.10.3
IBC International Building Code@ .................................... .... ........................................................... 103.3, 106.3, 202, 501 .l, 501.2
IFC International Fire Code@ ............................................................................................. 202.402.1 .I, 402.2.1,403.2,606.1, 606.2
2003 URBANWILDLAND INTERFACE CODETM
National Electric Code NE C ::fia,erytnarch Park
Standard Referenced ln
reference code sectlon
number T~tle number
International Code Council
IFGC 5203 Leesburg Pike, Suite 600 ,,Is ch,h, 2,041 -340,
Standard Referenced ln
reference code sect~on
number T~tle number
Standard
reference
number Title
Referenced in
code section
numher
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE
APPENDIX A
GENERAL REQUIREMENTS
SECTION A101
GENERAL
A1O1.l Scope. The provisions of ths appendix establish gerr
era1 requirements applicable to new and existing properties lo-cated
w i t h urban-wildland interface areas.
A101.2 Objective. The objective of thls appendix is to pro-vide
necessary fireprotection measures to reduce the threat of
wildfire in an urban-wildland interface area and imrove the
A102.3.3.1 General. Clearances between vegetation
and electical lines shall be in accordance with Section
A102.3.3.
A102.3.3.2 Trimming clearance. At the time of trim-ming,
clearances not less than those established by Table
A102.3.3.2 shall be provided. The radial clearances
shown below are minimum clearances that shall be estab-lished,
at time of trimming, between the vegetation and
the energized conductors &d associated live varts.
2003 INTERNATIONAL URBANWILDLAND INTERFACE CODETM 23
>z-$ $r capability of controlling such fires. ,wa& A"." ...
TABLE A102.3.3.2
NCES BETWEEN VEGETATION
LINES AT TIME OF TRIMMING
SECTION A102
VEGETATION CONTROL
A102.1 General. Vegetation control shall comply with t h
section.
A102.2 Clearance of brush or vegetative growth fro
roadways. The code official is authorized to require area
on each side of portions of fire apparatus access roads and T(Exception: The code official is authorized to establish
driveways to be cleared of nonfireresistive vegetation growth minimum clearances different than those specified by
at their discretion. Table A102.3.3.2 when evidence substantiating such
$at.=s i; other clearances is submitted to and approved by the
*">iqco de
""P"
A102.3.3.3 Minimum clearance to be maintai-ned.
Clearances not less than those established by Table
A102.3.3.3 shall be maintained during such periods of
time as designated by the code official. The sitsspecific
electrical transmission and dis clearance achieved, at time of p e g , shall vary based on
species growth rates, the utility company-specific trim
A102.3.1 General. Clearanc cycle, the potential line sway due to wind, line sag due to
growth from electrical transmission and distribution lines electrical loading and ambient temperature and the tree's
shall be in accordance with Section A102.3.
- & &
location in proximity to the high voltage lines.
Y@&&
Exception: Section A102.3 does not authorize persons Exception: The code official is authorized to establish
not having legal right of entry to enter on or damage the minimum clearances different than those specified by
property of others without co f the owner. Table A 102.3.3.3 when evidence substantiating such
VS$-&*?*& other clearances is submitted to and approved by the
A102.3.2 Support clearance. Persons owning, control- code official.
ling, operating or maintaining electical transmission or dis-tribution
lines shall have an approved program in place that TABLE A1 02.3.3.3
identifies poles or towers with equipment and hardware MINIMUM CLEARANCES BETWEEN VEGETATION AND
ELECTRICAL LINES TO BE MAINTAINED
types that have a history of becoming an ignition source, and
provides a combustible free space consisting of a clearing of
not less than 10 feet (3048 mm) in each direction from the
outer circumference of such pole or tower during such peri-ods
of time as designated by the code official.
Exception: Lines used exclusively as telephone, tele-graph,
messenger call, alarm transmission or other lines
classed as communication circuits by a public utility. For SI: 1 inch = 25.4 mm.
A102.3.3 Electrical distribution and transmission line A102.3.3.4 Electrical power line emergencies. During
clearances. emergencies, the utility shall perform the required work to
LINE VOLTAGE
750-35,000
35,001 -60,000
60,001-1 15,000
11 5,001 -230,000
230,001 -500,000
MINIMUM CLEARANCE (inches)
fj
12
19
30.5
115
APPENDIX A
the extent necessary to clear the hazard. An emergency parked on, and trespassing is prohibited on, fire roads or defen-can
include situations such as trees falling into power
lines, or trees in violation of Table A102.3.3.3.
A102.4 Correction of condition. The code official is autho-rized
to give notice to the owner of the property on which con-ditions
regulated by Section A102 exist to correct such condi-tions.
If the owner fails to correct such condtions, the
legislative body of the jurisdiction is authorized to cause the
same to be done and make the expense of such correction a lien
on the property where such condition exists.
SECTION A103
ACCESS RESTRICTIONS
areas shall again be opened to entry. Entry on and occup
urba~wildlandin terface areas, except public roadway
ited areas or established trails and c
Exceptions:
1. Residents and owners of private property within ur
ban-wildland interface areas and their invitees and
guests going to or being on their lands.
2. Entry, in the course of duty, by peace or police off1
A103.2.1 General. When the code official determines that
a specific area w i t h an urban-wildland interface area pres-ents
an exceptional and continuing fire danger because of the
density of natural growth, difficulty of terrain, proximity to
structures or accessibility to the public, such areas shall be
restricted or closed until changed conditions warrant ter-mination
of such restriction or closure. Such areas shall be
~ostedin accordance with Section A103.2.2.
A103.2.2 Signs. Approved signs prohibiting entry by un-authorized
persons and referring to this code shall be placed
on every closed area.
A103.2.3 Trespassing. Entering and remaining within
areas closed and posted is prohibited.
Exception: Owners and occupiers of private or public
property within closed and posted areas; their guests or in-vitees;
authorized persons engaged in the operation and
maintenance of necessary utilities such as electrical pow-er,
gas, telephone, water and sewer; and local, state and
federal public officers and their authorized agents acting
in the course of duty.
A103.3 Use of fire roads and defensible space. Motorcy-cles,
motor scooters and motor vehicles shall not be driven or
sible space beyond the point where travel is restricted by a A104.1 General. Ignition sources shall be in accordance with
cable, gate or sign, without the permission of the property o m Section A104.
ers. Vehicles shall not be parked in a manner that obstructs the
entrance to a fire road or defensible space. A104.2 Objective. Regulations in this section are intended to
provide the minimum requirements to prevent the occurrence
Exception: hblic officers acting withm their scope of duty. of wildfxes.
Radio and television aerials, guy wires thereto, and other A104.3 Clearance from ignition sources. Clearance be-obstructions
shall not be installed or maintained on fke roads or tween ignition sources and grass, brush or other combustible
defensible spaces, unless located 16 feet (4877 rnm) or more materials shall be maintained a minimum of 30 feet (9144 mm).
above such fire road or defensible space.
A104.4 Smoking. When required by the code official, signs
A103.4 Use of motorcycles, motor scooters, ultralight air- shall be posted stating NO SMOKING. No person shall smoke
craft and motor vehicles. Motorcycles, motor scooters, ultra w i t h 15 feet (4572 mm) of combustible materials or nonfire-light
aircraft and motor vehicles shall not be operated w i t h ur- resistive vegetation.
Prboeafeqfnrium-cweiiassilt1s,i idneo1gxna c anfe idppo eitmn romt netihr tcf.e al ecpaerr olaypr eeeraststya, bowlwiistnhheeordu s tph uaab lpll biecre n opurr tep sreivnatthetede r wocaohddesen. tcEaoxbdcleies pohftefidioc nsima: lP.o lkacinegs aowrf~e ~ haasb oirta ctiaomn posri tiens t ahse dbeosuignndaatreieds b oyf tehse-
A103.5 T ~with lo~ch, barr~icades, si~gns and *a& A~104.5 Eq~ui nd devices generating heat, sparks or
dress markers. Locks, banicades, seals, cables, signs and ad- open flames. Equipment and devices generating heat, sparks
dress markers installed w i t h urbanwildland interface areas, or open flames capable of igniting nearby combustibles shall
by or under the control of the code official, shall not be tam- be used in urban-wi1d1and interface areas without a permit
pered with, mutilated, destroyed or removed. f r u ? code official. .-
Gates, doors, barriers and locks installed by or under the con- Exception: Use of approved equipment in habitated prem
trol of the code official shall not be unlocked. ises or designated campsites that are a minimum of 30 feet
(9144 mrn) from grass-, grain-, brush or forest-covered
SECTION A1 04 11 not be used or possessed
IGNITION SOURCE CONT
24 2003 INTERNATIONAL URBANWILDLAND INTERFACE CODE
APPENDIX A
Exception: Fireworks allowed by the code official under withm 10 feet (3048 mm) of the energized conductors.
permit in accordance with the Inteinational Fire Code when
not prohibited by applicable local or state laws, ordinances
and regulations.
The code official is authorized to seize, take, remove or
cause to be removed fireworks in violation of ths section.
A104.7 Outdoor fires.
A104.7.1 General. No person shall build, ignite or main-tain
any outdoor fire of any kind for any purpose in or on any
urban-wildland interface area, except by the authority of a
written permit from the code official.
Exception: Outdoor fires within Inhabited premises or
designated campsites where such fires are in a permanent
barbecue, portable barbecue, outdoor fireplace, incinera
tor or grill and are a minimum of 30 feet (9144 mm) from
any combustible material or nonfireresistive vegetation.
A104.7.2 Permits. Permits shall incorporate such terms
and conditions that will reasonably safeguard public safety
and property. Outdoor fires shall not be built, ignited or
maintained in or on hazardous fire areas under the following
conditions:
1. When high winds are blowing,
2. When a person 1'7 years old or over
times to watch and tend such fire, or
3. When a public announcement is
ing is prohibited.
A104.7.3 Restrictions. No per
barbecue, portable barbecue, outdoo
the dis~osaol f rubbish. trash or combustible waste material.
A104.8 Incinerators, outdoor fireplaces, permanent barbe-cues
and grills. Incinerators, outdoor fireplaces, permanent
barbecues and gdls shall not be bdt, installed or maintained in
urban-wildland interface areas without approval of the code
official.
T$&W\a &.
Incinerators, outdoor fireplaces, permanent barbecues and
grills shall be maintained in good repair and in a safe condition
at all times. Openings in such appliances shall be provided with
an approved spark arrestor, screen or door.
Exception: When approved by the code official, unpro-tected
openings in barbecues and grills necessary for proper
fhctioning.
A104.9 Reckless behavior. The code official is authorized to
stop any actions of a person or persons if the official determines
that the action is reckless and could result in an ignition of f ~ e
or spread of fire.
A104.10 Planting vegetation under or adjacent to ener-gized
electrical lines. No vegetation shall be planted under or
adjacent to energized power lines that, at maturity, shall grow
SECTION A105
CONTROL OF STORAGE
A105.1 General. In addition to the requirements of the Inter-national
Fire Code, storage and use of the materials shall be in
accordance with Section A105.
sistive vegetation.
SECTION A1 06
DUMPING
A105.2 Hazardous materials. Hazardous materials in ex- A106.1 Waste material. Waste material shall not be placed,
cm of 10 f l o(3~7.8 L) of W4 200 cubic feet (5.66 m3) of deposited or dumped in hm-wildlmd interface areas, or in,
gas, or 10 pounds (4.54 kg) of solids require a permit and shall on or along trruls, roadways or hk hways or qainst strums in
comply with nationally recognized standards for storage and urban-wildland interface areas,
use.
Exception: Approved public and approved private dumping
A105.3 Explosives. Explosives shall not be possessed, kept, areas.
stored, sold, offered for sale, given away, used, discharged, &Fa
transported or disposed of within urbamwildland interface A106.2 Ashes and coals. Ashes and coals shall not be placed,
areas, except by permit from the code official. deposited or dumped in or on urbmwildland interface areas.
A105.4 Combustible materials.
A105.4.1 General. Outside storage of combustible mate- 1. In the hearth of an established fire pit, camp stove or
rials such as, but not limited to, wood, rubber tires, building
materials or paper products shall comply with the other ap 2. In a noncombustible container with a tightfitting lid,
plicable sections of this code and this section. which is kept or maintained in a safe location not less
than 10 feet (3048 mm) from nontireresistive vegeta
A105.4.2 Individual piles. Inpdual pile