CWUIC · California Wildland-Urban Interface Code

Where is oxygen‑consumption calorimetry (heat & visible smoke release) cited?

The CWUIC requires heat‑release and visible‑smoke measurements using the oxygen‑consumption calorimetry method (ASTM E1354) where called for by **§ 503.2.4.3.2** and **§ 503.2.4.3.3**; the State Fire Marshal test protocols incorporated by the Code (SFM 12‑7A‑4 / 12‑7A‑4A) describe the under‑deck/decking apparatus and timing (e.g., 24×24 in. specimen, 12×12 in. burner at 80 ± 4 kW, three replicates) and require HRR data from an oxygen‑depletion calorimeter file.

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Last reviewed: July 6, 2026

What the code requires — plain English

The California Wildland‑Urban Interface Code (CWUIC) explicitly points to the oxygen‑consumption calorimetry test method for measuring heat release rate (HRR) and visible smoke under specific deck and assembly fire‑exposure tests. The CWUIC references ASTM E1354 in § 503.2.4.3.2 and § 503.2.4.3.3 as the test method to obtain HRR / visible‑smoke data used by those sections . The technical under‑deck test procedures that use an oxygen‑depletion calorimeter are spelled out in the SFM referenced test protocols incorporated by the Code (see the SFM standards) .

The most important rule: the CWUIC references ASTM E1354 (oxygen‑consumption calorimetry) as the method to measure heat release rate and visible smoke for the tests invoked by § 503.2.4.3.2 and § 503.2.4.3.3 .

Requirements in detail

Summary: The CWUIC does not reprint the full E1354 procedure; it cites ASTM E1354 as the required test method and it also relies on SFM test procedures (SFM 12‑7A‑4 and 12‑7A‑4A) that call for an oxygen‑depletion calorimeter for under‑deck and decking tests. The CWUIC reference list shows ASTM E1354 linked to the specific CWUIC sections § 503.2.4.3.2 and § 503.2.4.3.3 . The SFM test procedures incorporated by reference describe the apparatus and operating parameters (burner size, burner output, deck specimen size, number of replicates, and that HRR is measured by oxygen‑depletion calorimetry) file.

Key elements the Code points you to

  • The Code requires the use of the ASTM E1354 method for measuring heat and visible smoke release where those metrics are required by the named CWUIC sections (see § 503.2.4.3.2 and § 503.2.4.3.3) .
  • The State Fire Marshal (SFM) test procedures that CWUIC uses for decking/under‑deck exposures explicitly require an oxygen depletion (oxygen‑consumption) calorimeter to record HRR and smoke data for the test assembly file.

Decision‑relevant dimensions and values

Decision item Typical value / description Code Reference
Referenced test standard for HRR & visible smoke ASTM E1354 (oxygen‑consumption calorimetry) § 503.2.4.3.2, § 503.2.4.3.3
Under‑deck burner output (test apparatus) 80 ± 4 kW burner output (12"×12" diffusion burner) used in SFM under‑deck test SFM referenced test 12‑7A‑4 / 12‑7A‑4A equipment description file
Specimen (deck) size Nominal 24 × 24 inches (610 × 610 mm) deck specimen for decking tests SFM 12‑7A‑4A test assembly specification
Number of replicates Three replicate assemblies (execute three tests) SFM 12‑7A‑4A conduct of tests
Test exposure / observation intervals 3‑minute burner exposure, then continued observation (typical 40 minutes) as part of the test protocol SFM 12‑7A‑4A conduct of tests
Measurement method for HRR Oxygen‑consumption (oxygen depletion) calorimetry instrumentation (hood, ducting, analyzers) SFM equipment & ASTM E1354 reference file

(These SFM test parameters are part of the California referenced test procedures that the Code incorporates; the CWUIC itself points to ASTM E1354 for HRR/visible‑smoke measurement where required by the cited sections.) file

Exceptions & special cases

  • The CWUIC text in the retrieved files does not specify alternate HRR test methods in place of ASTM E1354 for the sections named; the Code instead references E1354 as the standard to be used in those contexts . If a product or assembly testing program relies on a different method, you must show equivalence to ASTM E1354 or follow any alternate methods explicitly allowed by the adopting jurisdiction — the CWUIC excerpts available do not document an alternate-method acceptance pathway. If you need confirmation about local acceptance of an alternate method, consult the enforcing authority (AHJ).
  • The SFM decking/eaves procedures include additional apparatus and reporting requirements (hood/ducting, gas flow and gas composition reporting, photographic/video records). These are procedural details in the SFM test protocols rather than new CWUIC code text; follow the SFM protocol where the CWUIC invokes it file.

If you need pass/fail numeric criteria tied to HRR or smoke output for acceptance under CWUIC, the retrieved sections do not provide those numeric acceptance thresholds — they show the required measurement method and test procedure instead. I did not find pass/fail HRR limits in the retrieved CWUIC fragments; do you want me to search for acceptance criteria in other CWUIC sections or the SFM standard text?

Common mistakes

  • Treating the Code citation as optional: when § 503.2.4.3.2 or § 503.2.4.3.3 require HRR/visible‑smoke data, the CWUIC points to ASTM E1354 — you cannot substitute a non‑equivalent method without prior approval .
  • Quoting the SFM test apparatus values (24×24 in., 80 kW burner, 3 replicates) as if they are CWUIC text — these are in the California referenced SFM procedures incorporated by the Code; always cite the SFM sections for those specifics, and the CWUIC sections for the requirement to measure HRR by E1354 file.
  • Omitting the required instrumentation details: the SFM procedures require a proper hood/ducting and gas analysis to permit oxygen‑consumption calorimetry — failing to supply these leads to invalid data file.
  • Assuming ASTM E1354 covers whole‑assembly acceptance criteria. E1354 is a measurement method; acceptance criteria are set by the code or the specific referenced test procedure that invokes E1354. The CWUIC cites E1354 as the measurement method but does not itself list numeric pass/fail HRR thresholds in the retrieved text .

Worked example — concrete scenario

Scenario: You are testing a new composite deck board product under the CWUIC‑referenced deck test.

  1. Test method called for by the CWUIC sections § 503.2.4.3.2 / § 503.2.4.3.3 is ASTM E1354 for measuring HRR and visible smoke. You will therefore prepare the specimen and instrumentation to run E1354 measurements during the deck‑assembly exposure (CWUIC points you to this standard) .
  2. Follow the SFM under‑deck (12‑7A‑4A) apparatus: assemble a nominal 24 × 24 in. deck specimen made with the candidate board (five nominal 6‑inch boards if that is the board width), mount it over a 12 × 12 in. burner positioned so the top of the burner is 27 in. below the deck boards, and condition specimens per the SFM instructions file.
  3. Run three replicates. Verify burner output at 80 ± 4 kW without the deck in place, then run each test with the oxygen‑consumption calorimeter hood and ducting recording oxygen, CO2 (and temperature and volumetric flow) so the HRR can be calculated per oxygen‑consumption principles (per ASTM E1354 / SFM equipment requirements) file.
  4. Example measurement (illustrative numbers only — not a code pass/fail): suppose the oxygen‑consumption calculations yield a measured peak HRR of 95 kW and a total heat release over the test of 250 kJ, and visible‑smoke time‑series data are recorded by the duct smoke meter. You would include those HRR and visible‑smoke measurements in the test report as required by the SFM/CWUIC reporting instructions (gas flow, oxygen concentration, HRR curve, photographic record) file.
  5. Important: the retrieved CWUIC excerpts do not provide numeric pass/fail limits tied to those HRR or smoke values. The SFM procedures set conduct and reporting requirements; acceptance criteria (if any) are found in the specific CWUIC section invoking the test or in the SFM acceptance language — those numerical acceptance criteria were not present in the retrieved CWUIC fragments I was given. If you need pass/fail thresholds, I can search the CWUIC/SFM documents for acceptance conditions.

Related provisions

  • § 503.2.4.3.2 — CWUIC reference to ASTM E1354 (HRR/visible‑smoke measurement)
  • § 503.2.4.3.3 — CWUIC reference to ASTM E1354 (HRR/visible‑smoke measurement)
  • § 503.2.4 — parent section covering referenced testing for the same topic (CWUIC referenced‑standards listing)
  • § 504.7.3.2 — CWUIC decking test cross‑references (decking/under‑deck tests referenced elsewhere in the code)
  • SFM test protocols incorporated by reference (SFM 12‑7A‑4 and 12‑7A‑4A) — these describe the under‑deck decking test apparatus and explicitly require oxygen depletion / oxygen‑consumption calorimetry for HRR measurement (see the SFM referenced standard text) file

If you want, I can pull the exact CWUIC text of § 503.2.4.3.2 and § 503.2.4.3.3 (full paragraphs) or the complete SFM 12‑7A‑4A test text for your project file; I have the referenced documents available and can extract those clauses verbatim.

Code references

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

  • CWUIC § 1.8 High relevance — show source text

    403.1.8, 1273.10

    ASTM ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959

    D638—2022: Standard Test Method for Tensile Properties of Plastics

    504.9.1

    D2898—10(2017): Standard Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing

    503.2.4.3.1

    D3909/D3909M— 2022 : Standard Specification for Asphalt Roll Roofing (Glass Felt) Surfaced With Mineral Granules

    504.2.1.1, 504.2.2

    D6662—22: Standard Specification for Polyolefin-Based Plastic Lumber Decking Boards

    503.2.4.3.3

    D7032—21: Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails

    503.2.4.3.2

    E84— 2023d : Standard Test Method for Surface Burning Characteristics of Building Materials

    202, 501.4.1, 503.2.4, 504.7.3.2, 504.7.3.3

    E108—20a: Standard Test Methods for Fire Tests of Roof Coverings

    504.2, 504.2.1.2, 504.11.6, G101.2.1

    E119— 2022 : Standard Test Methods for Fire Tests of Building Construction and Materials

    501.3, 504.3, 504.3.1, 504.5, 504.7, 504.7.1

    E136— 2024a : Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750 Degrees C

    501.4.1

    E1354— 2023 : Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    503.2.4.3.2, 503.2.4.3.3

    E2632—2020: Standard Test Method for Evaluating the Under-Deck Fire Test Response of Deck Materials

    504.7.3.2, 504.7.3.3, 504.7.3.3.1, 504.7.3.4

    E2652—2022: Standard Test Method for Assessing Combustibility of Materials Using a Tube Furnace with a Cone-shaped Airflow Stabilizer, at 750°C

    501.4.1

    E2707—2022: Standard Test Method for Determining Fire Penetration of Exterior Wall Assemblies Using a Direct Flame Impingement Exposure

    504.5, 504.9, 504.9.3

    E2726/E2726M—2012a(2017): Standard Test Method for Evaluating the Fire Test Response of Deck Structures to Burning Brands

    504.7.3.2, 504.7.3.3, 504.7.3.3.2

  • CWUIC § 501.3 High relevance — show source text

    501.3, 504.3, 504.3.1, 504.5, 504.7, 504.7.1

    E136— 2024a : Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750 Degrees C

    501.4.1

    E1354— 2023 : Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    503.2.4.3.2, 503.2.4.3.3

    E2632—2020: Standard Test Method for Evaluating the Under-Deck Fire Test Response of Deck Materials

    504.7.3.2, 504.7.3.3, 504.7.3.3.1, 504.7.3.4

    E2652—2022: Standard Test Method for Assessing Combustibility of Materials Using a Tube Furnace with a Cone-shaped Airflow Stabilizer, at 750°C

    501.4.1

    E2707—2022: Standard Test Method for Determining Fire Penetration of Exterior Wall Assemblies Using a Direct Flame Impingement Exposure

    504.5, 504.9, 504.9.3

    E2726/E2726M—2012a(2017): Standard Test Method for Evaluating the Fire Test Response of Deck Structures to Burning Brands

    504.7.3.2, 504.7.3.3, 504.7.3.3.2

    E2768—11(2018): Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)

    503.2.4

    2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 7-3

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

    REFERENCED STANDARDS

    E2886/E2886M—20: Standard Test Method for Evaluating the Ability of Exterior Vents to Resist the Entry of Embers and Direct Flame Impingement

    504.10.1

    E2957—2017 : Standard Test Method for Resistance to Wildfire Penetration of Eaves, Soffits and Other Projections

    504.3, 504.7, 504.7.1, 504.7.2

    G155—2021: Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials

    504.9.2

    ICC International Code Council, Inc., 200 Massachusetts Avenue, NW, Suite 250, Washington, DC 20001

    CBC—2025: California Building Code

  • CWUIC § 19428-2959 High relevance — show source text

    REFERENCED STANDARDS

    ASTM ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959

    B42—20: Specification for Seamless Copper Pipe, Standard Sizes

    909.13.1

    B43—20: Specification for Seamless Red Brass Pipe, Standard Sizes

    909.13.1

    B68/B68M—19: Standard Specification for Seamless Copper Tube, Bright Annealed (Metric)

    909.13.1

    B88—20: Standard Specification for Seamless Copper Water Tube

    909.13.1

    B251/B251M—2017: Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube

    909.13.1

    B280—20: Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service

    909.13.1

    D56—21a: Test Method for Flash Point by Tag Closed Cup Tester

    202

    D86—20b: Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure

    202

    D92—2018: Test Method for Flash and Fire Points by Cleveland Open Cup Tester

    202, 2401.2, 5001.1, 5104.1.1, 5104.1.2, 5701.2,

    D93—20: Test Methods for Flash Point by Pensky-Martens Closed Up Tester

    202

    D323—20a: Test Method for Vapor Pressure of Petroleum Products (Reid Method)

    202

    D2859—2016(2021): Standard Test Method for Ignition Characteristics of Finished Textile Floor Covering Materials

    804.3.3.1, 804.3.3.2

    D3278—21: Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus

    202

    D3498—03(2011): Standard Specification for Adhesives for Field-Gluing Plywood to Lumber Framing for Floor Systems

    701.6, 914.3.1.2, 3303.5

    E84—21a: Standard Test Method for Surface Burning Characteristics of Building Materials

    202, 803.1, 803.1.2, 803.3, 803.5.2, 803.10, 803.12, 803.13, 804.1.1, 804.1.2, 804.2.4, 3311.1

    E108— 2020a : Standard Test Methods for Fire Tests of Roof Coverings

    1207.9.5

    E648—19ae1: Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source

    804.3.1, 804.3.2, 804.4

    E681—09(2015): Standard Test Method for Concentration Limits of Flammability of Chemicals (Vapors and Gases)

    202

    E1354—22: Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    304.3.2, 304.3.4, 318.1, 2310.5.3, 3304.1.3, 3311.1, 3603.4

    E1529—16e1: Standard Test Method for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies

  • CWUIC § 424.2 High relevance — show source text

    E1354—2017: Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    424.2, 602.4.1.1, 602.4.2.1, 602.4.3.1, 1402.6

    E1592—2005(2017): Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference

    1504.4.2

    E1602—2003(2017): Guide for Construction of Solid Fuel Burning Masonry Heaters

    2112.2

    E1886—19: Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials

    1609.2, 1709.5.3.1

    E1966—15(2019): Standard Test Method for Fire-Resistive Joint Systems

    202, 715.3.1, 1709.5.3.1

    E1996—20: Specification for Performance of Exterior Windows, Curtain Walls, Doors and Impact Protective Systems Impacted by Windborne Debris in Hurricanes

    1609.2, 1709.5.3.1

    E2072—14: Standard Specification for Photoluminescent (Phosphorescent) Safety Markings

    1025.4

    E2174—20a: Standard Practice for On-site Inspection of Installed Fire Stops

    1705.18.1

    E2178—21a: Standard Test Method for Determining Air Leakage Rate and Calculation of Air Permeance of Building Materials

    202

    E2273—2018: Standard Test Method for Determining the Drainage Efficiency of Exterior Insulation and Finish Systems (EIFS) Clad Wall Assemblies

    1407.4.1, 2510.6.2

    E2307—20: Standard Test Method for Determining Fire Resistance of Perimeter Fire Barriers Using the Intermediate-Scale, Multistory Test Apparatus

    715.4

    E2353—21: Standard Test Methods for Performance of Glazing in Permanent Railing Systems, Guards and Balustrades

    2407.1.2

    E2392 / E2392M—10(2016): Standard Guide for Design of Earthen Wall Building Systems

    2109.2.4.8.9.2

    E2393—20a: Standard Practice for On-Site Inspection of Installed Fire Resistive Joint Systems and Perimeter Fire Barriers

    1705.18.2

    E2404—17: Standard Practice for Specimen Preparation and Mounting of Textile, Paper or Polymeric (Including Vinyl) and Wood Wall or Ceiling Coverings, Facing and Veneers to Assess Surface Burning Characteristics

    803.5.2, 803.12, 1402.6

    E2556/E2556M—2010(2016): Standard Specification for Vapor Permeable Flexible Sheet Water-resistive Barriers Intended for Mechanical Attachment

    1403.2, 2510.6.1

    2025 CALIFORNIA BUILDING CODE 35-21

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

    REFERENCED STANDARDS

    E2568—2017A: Standard Specification for PB Exterior Insulation and Finish Systems

    1407.2

  • CFC § O105 High relevance — show source text

    O104.3 Suspension of service. The fire code official has the authority to order the suspension of valet trash collection that is not in compliance with this appendix.

    2025 CALIFORNIA FIRE CODE APPENDIX O-3

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

    APPENDIX O—VALET TRASH AND RECYCLING COLLECTION IN GROUP R-2 OCCUPANCIES

    SECTION O105—REFERENCED STANDARDS

    O105.1 General. See Table O105.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, standard title, and the section or sections of this appendix that reference the standard.

    TABLE O105.1—REFERENCED STANDARDS Col2 Col3
    STANDARD ACRONYM STANDARD NAME SECTIONS HEREIN REFERENCED
    ASTM E1354—17 Standard Test Method for Heat and Visible Smoke
    Release Rates for Materials and Products Using an
    Oxygen Consumption Calorimeter    		 O102.5

    APPENDIX O-4 2025 CALIFORNIA FIRE CODE

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

    CALIFORNIA FIRE CODE – MATRIX ADOPTION TABLE

    APPENDIX P – TEMPORARY HAUNTED HOUSES, GHOST WALKS AND SIMILAR AMUSEMENT USES

    (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

    (Not adopted by the State Fire Marshal)

    Adopting Agency BSC BSC-
    CG    		 SFM Col5 HCD Col7 Col8 DSA Col10 OSHPD Col12 Col13 Col14 Col15 Col16 BSCC DPH AGR DWR CEC CA SL SLC
    Adopting Agency BSC BSC-
    CG    		 T-24 T-19* 1 2 1/AC AC SS 1 1R 2 3 4 5 5 5 5 5 5 5 5 5
    Adopt Entire Chapter
    Adopt Entire Chapter as
    amended (amended sections
    listed below)
    Adopt only those sections that
    are listed below
    [California Code of Regulations,
    Title 19, Division 1]
    Chapter / Section
  • CWUIC § 914.3.1.2 High relevance — show source text

    D3278—21: Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus

    202

    D3498—03(2011): Standard Specification for Adhesives for Field-Gluing Plywood to Lumber Framing for Floor Systems

    701.6, 914.3.1.2, 3303.5

    E84—21a: Standard Test Method for Surface Burning Characteristics of Building Materials

    202, 803.1, 803.1.2, 803.3, 803.5.2, 803.10, 803.12, 803.13, 804.1.1, 804.1.2, 804.2.4, 3311.1

    E108— 2020a : Standard Test Methods for Fire Tests of Roof Coverings

    1207.9.5

    E648—19ae1: Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source

    804.3.1, 804.3.2, 804.4

    E681—09(2015): Standard Test Method for Concentration Limits of Flammability of Chemicals (Vapors and Gases)

    202

    E1354—22: Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    304.3.2, 304.3.4, 318.1, 2310.5.3, 3304.1.3, 3311.1, 3603.4

    E1529—16e1: Standard Test Method for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies

    5704.2.9.2.3

    E1537—22: Test Method for Fire Testing of Upholstered Furniture

    805.1.1.2, 805.2.1.2, 805.3.1.2, 805.4.1.2

    E1590—2022: Test Method for Fire Testing of Mattresses

    805.1.2.2, 805.2.2.2, 805.3.2.2.1, 805.4.2.2

    E1966—15(2019): Standard Test Method for Fire-Resistant Joint Systems

    202

    E2072—14: Standard Specification for Photoluminescent (Phosphorescent) Safety Markings

    1025.4

    E2404—17: Standard Practice for Specimen Preparation and Mounting of Textile, Paper or Polymeric (Including Vinyl) and Wood Wall or Ceiling Coverings, Facing and Veneers to Assess Surface Burning Characteristics

    803.5.1, 803.5.2, 803.12

    2025 CALIFORNIA FIRE CODE 80-7

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

    REFERENCED STANDARDS

    E2573—19: Standard Practice for Specimen Preparation and Mounting of Site-Fabricated Stretch Systems to Assess Surface Burning Characteristics

    803.10

    E2579—21: Standard Practice for Specimen Preparation and Mounting of Wood Products to Assess Surface Burning Characteristics

    803.13

    E3082—20: Standard Test Methods for Determining the Effectiveness of Fire-Retardant Treatments for Natural Christmas Trees

    806.1.4

  • CWUIC § 406.2.4 High relevance — show source text

    406.2.4, 424.2, 804.2, 804.3

    35-20 2025 CALIFORNIA BUILDING CODE

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

    REFERENCED STANDARDS

    E662—17a: Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials

    804.4.1, 804.4.2

    E681—09(2015): Test Methods for Concentration Limits of Flammability of Chemical Vapors and Gases

    202

    E736/E736M—19: Test Method for Cohesion/Adhesion of Sprayed Fire-Resistive Materials Applied to Structural Members

    704.12.3.2, 1705.15.6

    E814—2013A(2017): Standard Test Method for Fire Tests of Penetration Firestop Systems

    202, 714.4.1.2, 714.4.2, 714.5.1.2

    E970—2017: Standard Test Method for Critical Radiant Flux of Exposed Attic Floor Insulation Using a Radiant Heat Energy Source

    720.3.1

    E1007—21: Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission through Floor-Ceiling Assemblies and Associated Support Structures

    1206.3

    E1300—2016: Practice for Determining Load Resistance of Glass in Buildings

    2404.1, 2404.2, 2404.3.1, 2404.3.2, 2404.3.3, 2404.3.4, 2404.3.5

    E1354—2017: Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    424.2, 602.4.1.1, 602.4.2.1, 602.4.3.1, 1402.6

    E1592—2005(2017): Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference

    1504.4.2

    E1602—2003(2017): Guide for Construction of Solid Fuel Burning Masonry Heaters

    2112.2

    E1886—19: Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials

    1609.2, 1709.5.3.1

    E1966—15(2019): Standard Test Method for Fire-Resistive Joint Systems

    202, 715.3.1, 1709.5.3.1

    E1996—20: Specification for Performance of Exterior Windows, Curtain Walls, Doors and Impact Protective Systems Impacted by Windborne Debris in Hurricanes

    1609.2, 1709.5.3.1

    E2072—14: Standard Specification for Photoluminescent (Phosphorescent) Safety Markings

    1025.4

    E2174—20a: Standard Practice for On-site Inspection of Installed Fire Stops

    1705.18.1

    E2178—21a: Standard Test Method for Determining Air Leakage Rate and Calculation of Air Permeance of Building Materials

    202

  • CFC § O104 High relevance — show source text

    O103.3 Stairways. Containers used for valet trash collection shall not be placed on stair risers, within minimum required stairway landing dimensions or anywhere in an interior exit stairway.

    SECTION O104—ADDITIONAL REQUIREMENTS

    O104.1 Time limits. Filled containers used for valet trash or recycling services shall not be placed outside a dwelling unit for more than 6 hours within any 24-hour period. Empty approved containers used for valet trash or recycling services shall not remain in a corridor for more than 12 continuous hours in a 24-hour period.

    O104.2 Collection rules. The property owner or manager shall have written valet service rules, hours and penalties provided to all tenants and occupants. The property owner or manager shall be responsible for implementing, monitoring and enforcing all valet trash collection rules. A copy of the rules shall be provided to the fire code official upon request.

    O104.3 Suspension of service. The fire code official has the authority to order the suspension of valet trash collection that is not in compliance with this appendix.

    2025 CALIFORNIA FIRE CODE APPENDIX O-3

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

    APPENDIX O—VALET TRASH AND RECYCLING COLLECTION IN GROUP R-2 OCCUPANCIES

    SECTION O105—REFERENCED STANDARDS

    O105.1 General. See Table O105.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, standard title, and the section or sections of this appendix that reference the standard.

    TABLE O105.1—REFERENCED STANDARDS Col2 Col3
    STANDARD ACRONYM STANDARD NAME SECTIONS HEREIN REFERENCED
    ASTM E1354—17 Standard Test Method for Heat and Visible Smoke
    Release Rates for Materials and Products Using an
    Oxygen Consumption Calorimeter    		 O102.5

    APPENDIX O-4 2025 CALIFORNIA FIRE CODE

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    CALIFORNIA FIRE CODE – MATRIX ADOPTION TABLE

    APPENDIX P – TEMPORARY HAUNTED HOUSES, GHOST WALKS AND SIMILAR AMUSEMENT USES

    (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

    (Not adopted by the State Fire Marshal)

  • CWUIC § 12-7 Medium relevance — show source text

    12-7A-4.7 PART A. Under-deck flame test.

    12-7A-4.7.1 Equipment.

    1. Burner. A 12 x 12 inch (300 x 300 mm) sand diffusion burner shall be used. Natural gas, methane or propane shall be supplied to the burner through a metered control system. The gas supply to the burner shall produce a net heat output of 80 ± 4 kW throughout the flame exposure. Burner output can be determined from HRR or calculated from the gas flow rate, temperature and pressure.
    2. Oxygen depletion calorimeter. The equipment shall include a hood, associated ducting and instrumentation to provide HRR data by oxygen depletion calorimetry.

    12-7A-4.7.2 Test system preparation. See Figure No. 1.

    1. Deck support assembly. The assembly that holds the test deck over the burner.
    2. Baffle panels and joist support. Horizontal metal plates to support the deck joists along their full length, and also to confine burner flames to the underside of the deck boards located between the support joists.
    3. Back wall. Ceramic fiber board or another noncombustible panel product for the back wall material. Total height of the back wall shall be 8 feet (2.4 m).

    2025 CALIFORNIA REFERENCED STANDARDS CODE 45

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    MATERIALS AND CONSTRUCTION METHODS FOR EXTERIOR WILDFIRE EXPOSURE

    1. Ledger board. A 4-foot-long (1.2 m) simulated 2 x 6 ledger board shall be constructed of layers of ceramic fiber board (or other noncombustible panel product) and attached to the wall at a height slightly below the overhang of the rear deck board of the test deck.

    12-7A-4.7.3 Conduct of tests.

    1. Airflow. The test shall be conducted under conditions of ambient airflow.

    2. Number of tests. Conduct the test on three replicate assemblies.

    3. Burner output verification. Without a deck in the apparatus, set the output of the burner to 80 ± 4 kW. Conduct a verification run of 3 minutes to ensure the heat release rate, and then turn off the burner.

    4. Measurement of heat release rate. HRR is measured during the tests with a properly calibrated oxygen depletion calorimeter. Since HRR is typically a post-test analysis, this criterion for Acceptance may be determined at the end of the test.

    5. Burner positioning. Center the burner directly under the middle deck board, midway between the joists. The distance from the top of the burner to the bottom of the deck boards shall be 27 inches (690 mm).

    6. Moisture content. Measure the moisture content of the wooden members of the assembly using a moisture meter (ASTM D4444).

    7. Procedure.

    7.1. Ignition. Ignite the burner, controlling for a constant 80 ± 4 kW output. 7.2. Flame exposure. Continue the exposure for a 3-minute period. Extinguish the burner.

    7.3. Continued combustion. Continue observation for an additional 40 minutes or until all combustion has ceased.

  • CWUIC § 12-8 Medium relevance — show source text

    2025 CALIFORNIA REFERENCED STANDARDS CODE 51

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    FIRE-RESISTIVE STANDARDS FOR FIRE PROTECTION

    minute) from the start of the test. This clock shall be accurately synchronized with all other measurements, or other provisions shall be made to correlate the photographic record with time. Color slides shall also be taken at 15-second intervals for the first 3 minutes of the test and at a minimum of 30-second intervals thereafter for the duration of the test.

    REPORT

    Sec. 12-8-103. The report shall include the following items:

    1. Material description. The name, thickness, density and size of the material shall be listed, along with other identifying characteristics or labels.

    2. Materials mounting and conditioning.

    3. Layout of specimens and attachments in test room.

    4. Relative humidity and temperature of the room and the test building prior to and during the test.

    5. The fuel gas flow to the ignition burner and its calculated rate of gross heat output.

    6. The total incident heat flux at the center of the floor shall be reported for each heat flux gage as a function of time starting 1 minute prior to the test.

    7. The temperature of gases in the room, the doorway, and in the exhaust duct shall be reported for each thermocouple as a function of time starting 1 minute prior to the test. The temperature recorded by the thermocouple in the duct will be used in the required calculation.

    8. The volumetric flow rate of the gas in the duct shall be calculated from Equation 12 in Appendix 12-8-1A and reported as a function of time starting 1 minute prior to the test.

    9. The oxygen concentration in the analyzer shall be reported as a function of time starting 1 minute prior to the test.

    10. The carbon dioxide concentration, if measured in the analyzer, shall be reported as a function of time starting 1 minute prior to the test.

    Note: Separate reporting of the volumetric flow rate, temperature, oxygen and carbon dioxide and/or carbon monoxide concentrations provide diagnostic information on the performance of the exhaust gas collection system and provide a check on the heat production calculations. 11. The total rate of heat production shall be calculated from the measured oxygen and carbon dioxide and/or carbon monoxide concentrations, and the temperature and volumetric flow rate of the gas in the duct. 12. The product of the volumetric flow rate of the gas in the duct and the carbon monoxide concentration at the specified location in the combustion hood system shall be reported as a function of time after the start of the test. 13. The product of the volumetric flow rate of the gas in the duct at the duct gas temperature and the optical density per foot at the specified smoke meter location in the duct shall be reported as a function of time after the start of the test. Note: If this product is multiplied by 1.55 × 10 [-3], for English units, it gives the smoke units produced per second, where a smoke unit is defined as the quantity of smoke which, when distributed uniformly over a cubic meter, would have an optical density of unity over a path length of 1 meter. (This is the definition used in the Proposed ASTM Test for Heat and Visible Smoke Release Rates for Materials and Products.) 14. A transcription of the visual, photographic, audio and written records of the fire test shall be provided.

  • CWUIC § 13143.2 Medium relevance — show source text

    Reference— Health and Safety Code Section 13143.

    Residential. All hotels, motels, lodging houses, apartment houses and dwellings, including congregate residences and buildings and structures accessory thereto. Multiple-story structures existing on January 1, 1975, allowed for human habitation, including and limited to hotels, motels and apartment houses less than 75 feet (22 860 mm) above the lowest floor level having building access, wherein rooms used for sleeping are let above the ground floor.

    Authority cited— Health and Safety Code Sections 13143.2 and 17921.

    Reference— Health and Safety Code Section 13143.

    Residential care facilities. Certified family care homes, out-of-home placement facilities, halfway houses, drug and/or alcohol rehabili- tation facilities, and any building or structure used or intended for use as a home or institution for the housing of any person of any age when such person is referred to or placed within such home or institution for protective social care and supervision services by any governmental agency.

    Authority cited— Health and Safety Code Section 13143.6.

    Reference— Health and Safety Code Section 13143.

    Tents, awnings, or other fabric enclosures used in connection with any occupancy.

    Authority cited— Health and Safety Code Section 13116.

    Reference— Health and Safety Code Section 13143.

    Fire alarm devices, equipment and systems in connection with any occupancy.

    Authority cited— Health and Safety Code Section 13114.

    Reference— Health and Safety Code Section 13143.

    2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 1-5

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    ADMINISTRATION

    Hazardous materials.

    Authority cited— Health and Safety Code Section 13143.9.

    Reference— Health and Safety Code Section 13143.

    Flammable and combustible liquids.

    Authority cited— Health and Safety Code Section 13143.6.

    Reference— Health and Safety Code Section 13143.

    Public school automatic fire detection, alarm and sprinkler systems.

    Authority cited— Health and Safety Code Section 13143 and California Education Code Article 7.5, Sections 17074.50, 17074.52 and 17074.54.

    Reference— Government Code Section 11152.5, Health and Safety Code Section 13143, and California Education Code Chapter 12.5, Leroy F. Greene School Facilities Act of 1998, Article 1.

    Wildland-urban interface fire area.

    Authority cited— Health and Safety Code Sections 13143, 13108.5(a) and 18949.2(b) and (c) and Government Code Section 51189.

    Reference— Health and Safety Code Sections 13143, Government Code Sections 51176, 51177, 51178 and 51179, and Public Resources Code Sections 4201 through 4204.

  • CWUIC § 12-7 Medium relevance — show source text

    504.8

    12-7A-3: Horizontal Projection Underside. A fire resistance test standard consisting of a 300 kW intensity direct flame exposure for a 10-minute duration

    504.3, 504.7, 504.7.1

    12-7A-4: Decking. A two-part test consisting of a heat release rate (Part A) deck assembly combustion test with an under deck exposure of 80 kW intensity direct flame for a 3-minute duration, and a (Part B) sustained deck assembly combustion test consisting of a deck upper surface burning ember exposure with a 12 mph wind for 40 minutes using a 2.2 lb (1kg) burning “Class A” size 12" × 12" × 2.25" (300 mm × 300 mm × 57 mm) roof test brand

    504.7.3.2

    12-7A-4A: Decking Alternate Method A. A heat release rate deck assembly combustion test with an under deck exposure of 80 kW intensity direct flame for a 3-minute duration

    504.7.3.2

    State Fire Marshal’s Guidelines for Fire Hydrant Markings Along State Highways and Freeways, May 1988

    404.8

    UL UL LLC, 333 Pfingsten Road, Northbrook, IL 60062-2096

    9—2009: Fire Tests of Window Assemblies—with Revisions through March 2020

    504.8

    10B—2008: Fire Tests of Door Assemblies—with Revisions through May 2020

    504.9

    7-4 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

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    REFERENCED STANDARDS

    10C—2016: Positive Pressure Fire Tests of Door Assemblies—with Revisions through May 2021

    504.9

    94—2023: Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

    504.9.2

    263—2011: Fire Tests of Building Construction and Materials—with Revisions through March 2022

    501.3, 504.3, 504.3.1, 504.5, 504.7, 504.7.1

    723—2018: Test for Surface Burning Characteristics of Building Materials

    202, 501.4.1, 503.2.4, 504.7.3.2, 504.7.3.3

    790— 2022 : Standard Test Methods for Fire Tests of Roof Coverings

    504.2, 504.2.1.2, 504.11.6

    2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 7-5

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    7-6 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

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    CALIFORNIA WILDLAND-URBAN INTERFACE CODE – MATRIX ADOPTION TABLE

    APPENDIX A – GENERAL REQUIREMENTS

Frequently asked questions

What is ASTM E1354 and why does CWUIC point to it?

ASTM E1354 is the Standard Test Method for Heat and Visible Smoke Release Rates using an oxygen‑consumption calorimeter. CWUIC cites it as the method to obtain HRR/visible‑smoke data where those metrics are required by specific sections (notably § 503.2.4.3.2 and § 503.2.4.3.3) .

Does the CWUIC tell me the HRR pass/fail numbers?

The CWUIC fragments retrieved show the requirement to measure HRR via ASTM E1354 but do not include numeric pass/fail HRR thresholds in the cited sections. Acceptance criteria are set by the specific CWUIC test provision or the referenced SFM procedure; those numeric criteria were not present in the retrieved excerpts file.

Where are the apparatus and test‑run details (burner size, specimen size, replicates)?

Those details are provided in the California SFM referenced test procedures (SFM 12‑7A‑4 / 12‑7A‑4A) incorporated by the Code; they specify a 12×12 in. burner at 80 ± 4 kW, 24×24 in. specimen, and three replicates, and require HRR measurement by oxygen‑depletion calorimetry file.

If I have HRR data from another lab method, can I use it?

Not automatically. The CWUIC points specifically to ASTM E1354 for HRR/visible‑smoke measurement in the cited sections; use of an alternate method requires AHJ approval and demonstration of equivalence because the Code references E1354 as the standard method .

Who enforces these test method requirements?

The local enforcing authority (AHJ) and the SFM (when their standards are incorporated) enforce compliance with the CWUIC. For test method interpretation or acceptance of alternate methods, consult the AHJ and the SFM referenced procedures cited by the Code .

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