Premises identification, road signs and addresses

Grounded in the retrieved California Wildland-Urban Interface Code — click a citation to read the verbatim passage:

• CWUIC § 1274.00. High relevance — show source text

  1274.00. Intent. To facilitate locating a fire and to avoid delays in response, all newly constructed or approved Roads and Buildings shall be designated by names or numbers posted on signs clearly visible and legible from the Road. This section shall not restrict the size of letters or numbers appearing on road signs for other purposes.

  1274.01 Road signs. (a) Newly constructed or approved Roads must be identified by a name or number through a consistent system that provides for sequenced or patterned numbering and/or non-duplicative naming within each Local Jurisdiction. This section does not require any entity to rename or renumber existing roads, nor shall a Road providing access only to a single commercial or industrial Occupancy require naming or numbering. (b) The size of letters, numbers, and symbols for Road signs shall be a minimum four (4) inch letter height, half inch (.5) inch stroke, reflectorized, contrasting with the background color of the sign.

  1274.02 Road sign installation, location, and visibility. (a) Road signs shall be visible and legible from both directions of vehicle travel for a distance of at least one hundred (100) feet. (b) Signs required by this article identifying intersecting Roads shall be placed at the intersection of those Roads. (c) A sign identifying traffic access or flow limitations, including but not limited to weight or vertical clearance limitations, dead- end roads, one-way roads, or single lane conditions, shall be placed: (1) at the intersection preceding the traffic access limitation, and (2) no more than one hundred (100) feet before such traffic access limitation. (d) Road signs required by this article shall be posted at the beginning of construction and shall be maintained thereafter.

  1274.03 Addresses for buildings. (a) All Buildings shall be issued an address by the Local Jurisdiction which conforms to that jurisdiction's overall address system. Utility and miscellaneous Group U Buildings are not required to have a separate address; however, each Residential Unit within a Building shall be separately identified. (b) The size of letters, numbers, and symbols for addresses shall conform to the standards in the California Fire Code, California Code of Regulations title 24, part 9. (c) Addresses for residential Buildings shall be reflectorized.

  1274.04 Address installation, location, and visibility. (a) All buildings shall have a permanently posted address which shall be plainly legible and visible from the Road fronting the property. (b) Where access is by means of a private Road and the address identification cannot be viewed from the public way, an unob- structed sign or other means shall be used so that the address is visible from the public way. (c) Address signs along one-way Roads shall be visible from both directions. (d) Where multiple addresses are required at a single driveway, they shall be mounted on a single sign or post. (e) Where a Road provides access solely to a single commercial or industrial business, the address sign shall be placed at the near- est Road intersection providing access to that site, or otherwise posted to provide for unobstructed visibility from that intersection.

  (f) In all cases, the address shall be posted at the beginning of construction and shall be maintained thereafter.

  Article 4 Emergency Water Standards

• CWUIC § 1274.03 High relevance — show source text

  1274.03 Addresses for buildings. (a) All Buildings shall be issued an address by the Local Jurisdiction which conforms to that jurisdiction's overall address system. Utility and miscellaneous Group U Buildings are not required to have a separate address; however, each Residential Unit within a Building shall be separately identified. (b) The size of letters, numbers, and symbols for addresses shall conform to the standards in the California Fire Code, California Code of Regulations title 24, part 9. (c) Addresses for residential Buildings shall be reflectorized.

  1274.04 Address installation, location, and visibility. (a) All buildings shall have a permanently posted address which shall be plainly legible and visible from the Road fronting the property. (b) Where access is by means of a private Road and the address identification cannot be viewed from the public way, an unob- structed sign or other means shall be used so that the address is visible from the public way. (c) Address signs along one-way Roads shall be visible from both directions. (d) Where multiple addresses are required at a single driveway, they shall be mounted on a single sign or post. (e) Where a Road provides access solely to a single commercial or industrial business, the address sign shall be placed at the near- est Road intersection providing access to that site, or otherwise posted to provide for unobstructed visibility from that intersection.

  (f) In all cases, the address shall be posted at the beginning of construction and shall be maintained thereafter.

  Article 4 Emergency Water Standards

  1275.00 Intent. Emergency water for Wildfire protection shall be available, accessible, and maintained in quantities and locations spec- ified in the statute and these regulations in order to attack a Wildfire or defend property from a Wildfire.

  1275.01 Application. The provisions of this article shall apply in the tentative and parcel map process when new parcels are approved by the Local Jurisdiction.

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  APPENDIX H—REFERENCED CALIFORNIA DOCUMENTS

  1275.02 Water supply. (a) When a water supply for structure defense is required to be installed, such protection shall be installed and made serviceable prior to and during the time of construction except when alternative methods of protection are provided and approved by the Local Jurisdiction.

  (b) Water systems equaling or exceeding the California Fire Code, California Code of Regulations title 24, part 9, or, where a munic- ipal-type water supply is unavailable, National Fire Protection Association (NFPA) 1142, “Standard on Water Supplies for Suburban and Rural Fire Fighting,” 2017 Edition, hereby incorporated by reference, shall be accepted as meeting the require- ments of this article.

  (c) Such emergency water may be provided in a fire agency mobile water tender, or naturally occurring or man made containment structure, as long as the specified quantity is immediately available. (d) Nothing in this article prohibits the combined storage of emergency Wildfire and structural firefighting water supplies unless so prohibited by local ordinance or specified by the local fire agency. (e) Where freeze or crash protection is required by Local Jurisdictions, such protection measures shall be provided.

• CWUIC § 1274.02 High relevance — show source text

  [CCR, Title 14 §1274.02]

  403.2.4 Addresses for Buildings. (a) All Buildings shall be issued an address by the Local Jurisdiction which conforms to that jurisdiction's overall address system. Utility and miscellaneous Group U Buildings are not required to have a separate address; however, each Residential Unit within a Building shall be separately identified. (b) The size of letters, numbers and symbols for addresses shall conform to the standards in the California Fire Code, California Code of Regulations Title 24, Part 9. (c) Addresses for residential Buildings shall be reflectorized.

  [CCR, Title 14 §1274.03]

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  WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  403.2.5 Address installation, location and visibility. (a) All buildings shall have a permanently posted address which shall be plainly legible and visible from the Road fronting the property. (b) Where access is by means of a private Road and the address identification cannot be viewed from the public way, an unob- structed sign or other means shall be used so that the address is visible from the public way. (c) Address signs along one-way Roads shall be visible from both directions. (d) Where multiple addresses are required at a single driveway, they shall be mounted on a single sign or post. (e) Where a Road provides access solely to a single commercial or industrial business, the address sign shall be placed at the near- est Road intersection providing access to that site, or otherwise posted to provide for unobstructed visibility from that intersection.

  (f) In all cases, the address shall be posted at the beginning of construction and shall be maintained thereafter.

  [CCR, Title 14 §1274.04]

  SECTION 404—WATER SUPPLY

  404.1 General. An approved water source shall have an adequate water supply for the use of the fire protection service to protect buildings and structures from exterior fire sources or to suppress structure fires within the wildland-urban interface area of the jurisdiction in accordance with this section.

  404.2 Required water supply. An approved water supply capable of supplying the required fire flow for structural fire protection and wildland fire exposure shall be provided to the premises on which facilities, buildings or portions of buildings are hereafter constructed or moved into or within the jurisdiction in accordance with Section 507 of the California Fire Code.

  404.3 Draft sites. Approved draft sites shall be provided at natural water sources intended for use as fire protection for compliance with this code. The design, construction, location, access and access maintenance of draft sites shall be approved by the code official.

  404.3.1 Access. The draft site shall have emergency vehicle access from an access road in accordance with Section 403.

  404.3.2 Pumper access points. The pumper access point shall be either an emergency vehicle access area alongside a conforming access road or an approved driveway not longer than 150 feet (45 720 mm). Pumper access points and access driveways shall be designed and constructed in accordance with all codes and ordinances enforced by this jurisdiction. Pumper access points shall not require the pumper apparatus to obstruct a road or driveway.

• CWUIC § 1273.09 High relevance — show source text

  Where security gates are installed, they shall have an approved means_ of emergency operation. Approval shall be by the local authority having jurisdiction. The security gates and the emergency operation shall be maintained operational at all times.

  [CCR, Title 14 §1273.09]

  403.2 Signing and building numbering.

  403.2.1 Intent. To facilitate locating a fire and to avoid delays in response, all newly constructed or approved Roads and Buildings shall be designated by names or numbers posted on signs clearly visible and legible from the Road. This section shall not restrict the size of letters or numbers appearing on road signs for other purposes. [CCR, Title 14 §1274.00]

  403.2.2 Road signs. (a) Newly constructed or approved Roads must be identified by a name or number through a consistent system that provides for sequenced or patterned numbering and/or nonduplicative naming within each Local Jurisdiction. This section does not require any entity to rename or renumber existing roads, nor shall a Road providing access only to a single commercial or industrial Occupancy require naming or numbering. (b) The size of letters, numbers and symbols for Road signs shall be a minimum four-inch letter height, half-inch stroke, reflector- ized, contrasting with the background color of the sign.

  [CCR, Title 14 §1274.01]

  403.2.3 Road sign installation, location, and visibility. (a) Road signs shall be visible and legible from both directions of vehicle travel for a distance of at least one hundred (100) feet. (b) Signs required by this article identifying intersecting Roads shall be placed at the intersection of those Roads. (c) A sign identifying traffic access or flow limitations, including but not limited to weight or vertical clearance limitations, dead- end roads, one-way roads, or single lane conditions, shall be placed: (1) at the intersection preceding the traffic access limitation, and (2) not more than one hundred (100) feet before such traffic access limitation. (d) Road signs required by this article shall be posted at the beginning of construction and shall be maintained thereafter.

  [CCR, Title 14 §1274.02]

  403.2.4 Addresses for Buildings. (a) All Buildings shall be issued an address by the Local Jurisdiction which conforms to that jurisdiction's overall address system. Utility and miscellaneous Group U Buildings are not required to have a separate address; however, each Residential Unit within a Building shall be separately identified. (b) The size of letters, numbers and symbols for addresses shall conform to the standards in the California Fire Code, California Code of Regulations Title 24, Part 9. (c) Addresses for residential Buildings shall be reflectorized.

  [CCR, Title 14 §1274.03]

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  WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  403.2.5 Address installation, location and visibility. (a) All buildings shall have a permanently posted address which shall be plainly legible and visible from the Road fronting the property. (b) Where access is by means of a private Road and the address identification cannot be viewed from the public way, an unob- _structed sign or other means shall be used so that the address is visible from the public way.

• CWUIC § 302.1 High relevance — show source text

  2|Purpose|Y|||||||51176|4201| |302|Wildland-Urban
  Interface Area
  Designations|Y||||||||| |302.1|Mapping|Y|||4904.2||||51178|4202
  4203(a)
  4204| |302.2|Review of wildland-
  urban interface areas|Y|||||||51181|4204| |Chapter 4|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements| |401|General|Y||||||||| |401.1|Scope|Y||||||||| |401.2|Objective|Y||||1273.00||||| |401.3|General safety
  precautions|Y||||||||| |402|Applicability|Y|||||||||

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  APPENDIX H—REFERENCED CALIFORNIA DOCUMENTS

  2025 CWUIC—continued	Col2	Adopted Yes/No	IWUIC Section	CBC Section	CFC Section	Title 14, Division 1.5 Section	Title 19, Division 1 Section	Gov Code Section	PRC Section	HSC Section
  Section	Title	Title	Title	Title	Title	Title	Title	Title	Title	Title
  Chapter 4	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements	Wildland-urban interface area requirements
  402.1	Subdivisions	Y
  402.1.1	Access	Y			503
  402.1.2	Water supply	Y			507
  402.1.2.1	Parcel map approval	Y						1275.01
  402.2	Individual structures	Y			503 507
  402.2.1	Access	Y			503
  402.2.2	Water supply	Y			507
  402.3	Existing conditions	N			505.1
  403	Access	Y				1273
  403.1	General	Y				1273.00
  403.1.1	Section 403 definitions	Y				1270.01(f)
  403.1.2	Width	Y				1273.01(a) 1273.

• CWUIC § 1-2 High relevance — show source text

  Population growth and the expanding urban development into traditionally nonurban areas have increasingly brought humans into contact with wildfires. According to the National Fire Protection Agency (NFPA), every year, wildfires burn across the United States and a growing number of people are living where wildfires are a real risk. In 2018 more than 58,000 fires burned nearly 9 million acres across the US. More than 25,000 structures were destroyed, including 18,137 residences and 229 commercial structures. California accounted for the highest number of structures lost in one state due to the number of significant fires, including the Mendocino Complex, Carr, Camp and Woolsey fires.

  The IWUIC is a model code that is intended to be adopted and used supplemental to the adopted building and fire codes of a jurisdiction. The unrestricted use of property in wildland-urban interface areas is a potential threat to life and property from fire and resulting erosion. The IWUIC has as its objective the establishment of minimum special regulations for the safeguarding of life and

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  property from the intrusion of fire from wildland fire exposures and fire exposures from adjacent structures and to prevent structure fires from spreading to wildland fuels, even in the absence of fire department intervention.

  Safeguards to prevent the occurrence of fires and to provide adequate fire protection facilities to control the spread of fire in wildland-urban interface areas are provided in a tiered manner commensurate with the relative level of hazard present.

  ARRANGEMENT AND FORMAT OF THE 2025 CWUIC

  The format of the CWUIC allows each chapter to be devoted to a particular subject. The following table shows how the CWUIC is divided. The chapter synopses detail the scope and intent of the provisions of the CWUIC.

  CHAPTER TOPICS	Col2
  CHAPTER	SUBJECT
  1-2	Administration and Definitions
  3-4	Wildland-Urban Interface Area Designation and Requirements
  5	Building Construction Regulations
  6	Fire Protection Requirements
  7	Referenced Standards
  Appendices A-I	Adoptable and Informational Appendices

  Chapter 1 Scope and Administration.

  Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.

  Chapter 2 Definitions.

  Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.

  Chapter 3 Wildland-Urban Interface Areas.

  Chapter 3 provides for the fundamental aspect of applying the code—the legal declaration and establishment of wildland-urban interface areas within the adopting jurisdiction, mapping of the area, periodic review and updates.

  Chapter 4 Wildland-Urban Interface Area Requirements.

  The requirements of Chapter 4 apply to all occupancies in the wildland-urban interface and pertain to all of the following:

  1. Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.

  2. Premises identification.

• CWUIC § 1270.01 Medium relevance — show source text

  1|||||| ||Strategic
  ridgeline (T14)|Y||||1270.01(dd)||||| ||Structure|Y|202|||1270.01(ee)||||| ||Subdivision|Y||||||||| ||Tree crown|Y||||||||| ||Undeveloped
  ridgeline (T14)|Y||||1270.01(ii)||||| ||Unenclosed acces-
  sory structure|Y||||||||| ||Vertical curve (T14)|Y||||1270.01(k)||||| ||Wildfire|Y||702A|4902.1|||||| ||Wildfire exposure|Y||702A|4902.1|||||| ||Wildland|Y||||||||| ||Wildland-urban inter-
  face area|Y||702A|4902.1|||||| |Chapter 3|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas|Wildland-urban interface areas| |301|General|Y||||||||| |301.1|Scope|Y||||||||4201| |301.2|Purpose|Y|||||||51176|4201| |302|Wildland-Urban
  Interface Area
  Designations|Y||||||||| |302.1|Mapping|Y|||4904.2||||51178|4202
  4203(a)
  4204| |302.2|Review of wildland-
  urban interface areas|Y|||||||51181|4204| |Chapter 4|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements|Wildland-urban interface area requirements| |401|General|Y||||||||| |401.1|Scope|Y||||||||| |401.2|Objective|Y||||1273.00||||| |401.3|General safety
  precautions|Y||||||||| |402|Applicability|Y|||||||||

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  APPENDIX H—REFERENCED CALIFORNIA DOCUMENTS

  |2025 CWUIC—continued|Col2|Adopted
  Yes/No|IWUIC
  Section|CBC
  Section|CFC
  Section|Title 14,
  Division 1.5
  Section|Title 19,

• CWUIC § 4-1 Medium relevance — show source text

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  4 WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  User notes:

  About this chapter: Chapter 4 provides requirements that apply to all occupancies in the wildland-urban interface and pertain to all of the following:

  1. Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.

  2. Premises identification.

  3. Key boxes to provide ready access to properties secured by gated roadways or other impediments to rapid fire service access.

  4. Fire protection water supplies, including adequate water sources, pumper apparatus drafting sites, fire hydrant systems and system reliability.

  5. Fire department access to equipment such as fire suppression equipment and fire hydrants.

  SECTION 401—GENERAL

  401.1 Scope. Wildland-urban interface areas shall be provided with emergency vehicle access and water supply in accordance with this chapter.

  401.2 Objective. The objective of this chapter is to establish the minimum requirements for emergency vehicle access and water supply for buildings and structures located in the wildland-urban interface areas.

  401.3 General safety precautions. General safety precautions shall be in accordance with this chapter. See also Appendix A.

  SECTION 402—APPLICABILITY

  402.1 Subdivisions. Subdivisions shall comply with Sections 402.1.1 and 402.1.2.

  402.1.1 Access. New subdivisions, as determined by this jurisdiction, shall be provided with fire apparatus access roads in accordance with the California Fire Code; the California Code of Regulations, Title 14, Division 1.5, Chapter 7, Subchapter 2, Article 2; and access requirements in accordance with Section 403.

  402.1.2 Water supply. New subdivisions as determined by this jurisdiction shall be provided with water supply in accordance with Section 507 of the California Fire Code; California Code of Regulations, Title 14, Division 1.5, Chapter 7, Subchapter 2, Article 4; and Section 404.

  402.1.2.1 Parcel map approval. Water supply requirements shall apply in the tentative and parcel map process when new parcels are approved by the local jurisdiction.

  402.2 Individual structures. Individual structures shall comply with Sections 402.2.1 and 402.2.2.

  402.2.1 Access. Individual structures hereafter constructed or relocated into or within wildland-urban interface areas shall be provided with fire apparatus access in accordance with the California Fire Code; the California Code of Regulations, Title 14, Division 1.5, Chapter 7, Subchapter 2, Subsection 1273; and Section 403 .

  402.2.2 Water supply. Individual structures hereafter constructed or relocated into or within wildland-urban interface areas shall be provided with a conforming water supply in accordance with the California Code of Regulations, Title 14, Division 1.5, Chapter 7, Subchapter 2, Article 4; California Fire Code Section 507; and Section 404.

• CWUIC § 402.1.1 Medium relevance — show source text

  
  Title 19, Division 1]|||||||||||||||||||||||| |Chapter / Section|||||||||||||||||||||||| |402|||†||||||||||||||||||||| |402.1.1|||X||||||||||||||||||||| |402.1.2|||X||||||||||||||||||||| |402.1.2.1|||X||||||||||||||||||||| |402.2.1|||X||||||||||||||||||||| |402.2.2|||X||||||||||||||||||||| |402.3|||X||||||||||||||||||||| |404.1|||X||||||||||||||||||||| |404.2|||X||||||||||||||||||||| |404.4|||X||||||||||||||||||||| |404.5|||X||||||||||||||||||||| |404.6_Reserved_|||X||||||||||||||||||||| |404.7|||X||||||||||||||||||||| |404.8|||X|||||||||||||||||||||

  • The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Wildland-Urban Interface Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same. The state agency does not adopt sections identified by the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

  The California Code of Regulations (CCR), Title 14, Division 1.5 provisions that are found in the California Wildland-Urban Interface Code are not listed in the Matrix Adoption Tables as they are not within the State Fire Marshal’s authority to adopt. These provisions are a reprint from the current CCR, Title 14, Division 1.5 text for the code user’s convenience only and are identified in the body of the code by square brackets containing references to applicable Title 14 sections.

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  4 WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  User notes:

  About this chapter: Chapter 4 provides requirements that apply to all occupancies in the wildland-urban interface and pertain to all of the following:

  1. Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.

  2. Premises identification.

  3. Key boxes to provide ready access to properties secured by gated roadways or other impediments to rapid fire service access.

  4. Fire protection water supplies, including adequate water sources, pumper apparatus drafting sites, fire hydrant systems and system reliability.

  5. Fire department access to equipment such as fire suppression equipment and fire hydrants.

  SECTION 401—GENERAL

  401.1 Scope. Wildland-urban interface areas shall be provided with emergency vehicle access and water supply in accordance with this chapter.

  401.2 Objective. The objective of this chapter is to establish the minimum requirements for emergency vehicle access and water supply for buildings and structures located in the wildland-urban interface areas.

• CWUIC § 2.25 Medium relevance — show source text

  00|2.25|0.70|DR|3.70|1.05|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|33 mil cold-
  formed steel
  stud|#10 screw|Steel thick-
  ness plus 3
  threads|16|3.85|1.45|DR|DR|3.40|DR|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|33 mil cold-
  formed steel
  stud|#10 screw|Steel thick-
  ness plus 3
  threads|24|3.40|DR|DR|DR|2.70|DR|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#8 Screw|Steel thick-
  ness plus 3
  threads|12|3.00|1.80|DR|DR|3.00|0.65|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#8 Screw|Steel thick-
  ness plus 3
  threads|16|3.00|1.00|DR|DR|2.85|DR|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#8 Screw|Steel thick-
  ness plus 3
  threads|24|2.85|DR|DR|DR|2.20|DR|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#10 screw|Steel thick-
  ness plus 3
  threads|12|4.00|3.85|2.80|1.80|4.00|3.05|1.50|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#10 screw|Steel thick-
  ness plus 3
  threads|16|4.00|3.30|1.95|0.60|4.00|2.25|DR|DR| |Minimum 33
  mil steel
  furring or
  minimum
  1x wood
  furringc|43 mil or
  thicker cold-
  formed steel
  stud|#10 screw|Steel thick-
  ness plus 3
  threads|24|4.00|2.25|DR|DR|4.00|0.65|DR|DR| |For SI: 1 inch = 25.4 mm, 1 pound per square foot (psf) = 0.0479 kPa, 1 pound per square inch = 0.00689 MPa.
  DR = Design Required, o.c. = on center.
  a. Wood furring shall be spruce-pine-fir or any softwood species with a specific gravity of 0.42 or greater.

• CWUIC § 601.1 Medium relevance — show source text

  SECTION 601—GENERAL

  601.1 Scope. The provisions of this chapter establish general requirements for new and existing buildings, structures and premises located within wildland-urban interface (WUI) areas .

  601.2 Objective. The objective of this chapter is to establish minimum requirements to mitigate conditions that might cause a fire originating in a structure to ignite vegetation in the wildland-urban interface (WUI) area, and conversely, a wildfire burning in vegetative fuels to transmit fire to buildings and threaten to destroy life, overwhelm fire suppression capabilities or result in large property losses.

  601.3 Chapter 6 definitions. Where used in this chapter, the term listed below shall be defined as follows:

  DEFENSIBLE SPACE. The buffer that landowners are required to create on their property between a “Building or Structure” and the plants, brush and trees or other items surrounding the “Building or Structure” that could ignite in the event of a fire. [CCR Title 14 §1299.02(a)]

  SECTION 602— FIRE PROTECTION PLANS

  602.1 General. The code official is authorized to require the owner or owner’s authorized agent to provide a fire protection plan. The fire protection plan shall be prepared to determine the acceptability of fire protection and life safety measures designed to mitigate wildfire hazards presented for the property under consideration.

  The fire protection plan shall be prepared by a registered design professional, qualified landscape architect, qualified fire safety specialist or similar specialist acceptable to the code official and shall analyze the wildfire risk of the building, project, premises or region to recommend necessary changes.

  The code official is authorized to require a preliminary fire protection plan prior to the submission of a final fire protection plan.

  602.2 Contents. The fire protection plan shall be based on a project-specific wildfire hazard assessment that includes considerations of location, topography, aspect and climatic and fire history.

  The plan shall identify conformance with all applicable state wildfire protection regulations, statutes and applicable local ordi- nances, whichever are more restrictive.

  The plan shall address fire department access, egress, road and address signage and water supply in addition to fuel reduction in accordance with Public Resources Code (PRC) 4290; the defensible space requirements in accordance with PRC 4291 or Government Code 51182; and the applicable building codes and standards for wildfire safety. The plan shall identify mitigation measures to address the project’s specific wildfire risk and shall include the information required in Sections 602.3 through 602.3.2.

  602.3 Project information. The final fire protection plan shall be reviewed and approved prior to start of construction.

  602.3.1 Preliminary fire protection plan. When a preliminary fire protection plan is submitted, it shall include, at a minimum, the following: 1. Total size of the project. 2. Information on the adjoining properties on all sides, including current land uses, and if known, existing structures and densi- ties, planned construction, natural vegetation, environmental restoration plans, roads and parks. 3. A map with all project boundary lines, property lines, slope contour lines, proposed structure foundation footprints, and proposed roads and driveways. The map shall identify project fuel modification zones and method of identifying the fuel modification zone boundaries.

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 6-3

• CWUIC § 1-2 Medium relevance — show source text

  CHAPTER TOPICS	Col2
  CHAPTER	SUBJECT
  1-2	Administration and Definitions
  3-4	Wildland-Urban Interface Area Designation and Requirements
  5	Building Construction Regulations
  6	Fire Protection Requirements
  7	Referenced Standards
  Appendices A-I	Adoptable and Informational Appendices

  Chapter 1 Scope and Administration.

  Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.

  Chapter 2 Definitions.

  Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.

  Chapter 3 Wildland-Urban Interface Areas.

  Chapter 3 provides for the fundamental aspect of applying the code—the legal declaration and establishment of wildland-urban interface areas within the adopting jurisdiction, mapping of the area, periodic review and updates.

  Chapter 4 Wildland-Urban Interface Area Requirements.

  The requirements of Chapter 4 apply to all occupancies in the wildland-urban interface and pertain to all of the following:

  1. Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.

  2. Premises identification.

  3. Key boxes to provide ready access to properties secured by gated roadways or other impediments to rapid fire service access.

  4. Fire protection water supplies, including adequate water sources, pumper apparatus drafting sites, fire hydrant systems and system reliability.

  5. Fire department access to equipment such as fire suppression equipment and fire hydrants.

  Chapter 5 Special Building Construction Regulations.

  The regulations in Chapter 5 establish minimum standards for the location, design and construction of buildings and structures based on construction within a Fire Hazard Severity Zone or a Wildland-Urban Interface (WUI) Area.

  The construction provisions of Chapter 5 are intended to supplement the requirements of the California Building Code and Califor- nia Residential Code and address mitigation of the unique hazards posed to buildings by wildfire and to reduce the hazards of building fires spreading to wildland fuels. This is accomplished by requiring ignition-resistant construction materials.

  Chapter 6 Fire Protection Requirements.

  Chapter 6 contains additional requirements for development and construction in Local Responsibility Areas (LRA) designated as Very High Fire Hazard Severity Zones and areas designated by the State Fire Marshal as State Responsibility Areas (SRA). While many of these provisions are found in Title 14 and Title 19 of the California Code of Regulations, they are replicated here for the code user. The local jurisdiction has the authority to apply the same regulations to LRA when the regulations are adopted by local ordinance.

  The requirements in this chapter reference the process for adoption of Very High Fire Hazard Severity Zones in the LRA; criteria for evaluating existing subdivisions that are at significant fire risk and are without an adequate secondary egress; and criteria for fire safety provisions required in the Safety Element of a city or county General Plan.

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE xi

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.