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// CODE SNIPPET

804.4.2 Minimum Critical Radiant Flux

Building Code 2021 of Illinois > 8 Interior Finishes > 804 Interior Floor Finish > 804.4 Interior Floor Finish Requirements > 804.4.2 Minimum Critical Radiant Flux
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In all occupancies, interior floor finish and floor covering materials in enclosures for stairways and ramps, exit passageways, corridors and rooms or spaces not separated from corridors by partitions extending from the floor to the underside of the ceiling shall withstand a minimum critical radiant flux. The minimum critical radiant flux shall be not less than Class I in Groups I-1, I-2 and I-3 and not less than Class II in Groups A, B, E, H, I-4, M, R-1, R-2 and S.
Exception: Where a building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2, Class II materials are permitted in any area where Class I materials are required, and materials complying with DOC FF-1 "pill test" (CPSC 16 CFR Part 1630) or with ASTM D2859 are permitted in any area where Class II materials are required.

Related Code Sections


804.4.2 Interior Finishes, Minimum Critical Radiant Flux
radiant flux. The minimum critical radiant flux shall be not less than Class I in Groups I-1, I-2 and I-3 and not less than Class II in Groups A, B, E, H ...
Building Code 2018 of Illinois > 8 Interior Finishes > 804 Interior Floor Finish > 804.4 Interior Floor Finish Requirements > 804.4.2 Minimum Critical Radiant Flux
804.4.2 Interior Finishes, Minimum Critical Radiant Flux
critical radiant flux. The minimum critical radiant flux shall be not less than Class I in Groups I-1, I-2 and I-3 and not less than Class II in Groups A, B ...
Building Code 2021 of Illinois > 8 Interior Finishes > 804 Interior Floor Finish > 804.4 Interior Floor Finish Requirements > 804.4.2 Minimum Critical Radiant Flux
720.3.1 Fire and Smoke Protection Features, Attic Floors
Exposed insulation materials installed on attic floors shall have a critical radiant flux of not less than 0.12 watt per square centimeter when ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 720 Thermal- And Sound-Insulating Materials > 720.3 Exposed Installation > 720.3.1 Attic Floors
720.3.1 Fire and Smoke Protection Features, Attic Floors
Exposed insulation materials installed on attic floors shall have a critical radiant flux of not less than 0.12 watt per square centimeter when ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 720 Thermal- And Sound-Insulating Materials > 720.3 Exposed Installation > 720.3.1 Attic Floors
406.2.4 Special Detailed Requirements Based on Occupancy and Use, Floor Surfaces
radiant flux not more than 0.45 W/cm 2 , as determined by ASTM E648 or NFPA 253, shall be permitted in repair garages ...
Building Code 2021 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 406 Motor-Vehicle-Related Occupancies > 406.2 Design > 406.2.4 Floor Surfaces
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