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// CODE SNIPPET

R302.9 Flame Spread Index and Smoke-Developed Index for Wall and Ceiling Finishes

Residential Code 2018 of Kansas > 3 Building Planning > R302 Fire-Resistant Construction > R302.9 Flame Spread Index and Smoke-Developed Index for Wall and Ceiling Finishes
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Flame spread and smoke-developed indices for wall and ceiling finishes shall be in accordance with Sections R302.9.1 through R302.9.4.

R302.9.1 Flame Spread Index

Wall and ceiling finishes shall have a flame spread index of not greater than 200.
Exception: Flame spread index requirements for finishes shall not apply to trim defined as picture molds, chair rails, baseboards and handrails; to doors and windows or their frames; or to materials that are less than 1/28 inch (0.91 mm) in thickness cemented to the surface of walls or ceilings if these materials exhibit flame spread index values not greater than those of paper of this thickness cemented to a noncombustible backing.

R302.9.2 Smoke-Developed Index

Wall and ceiling finishes shall have a smoke-developed index of not greater than 450.

R302.9.3 Testing

Tests shall be made in accordance with ASTM E84 or UL 723.

R302.9.4 Alternative Test Method

As an alternative to having a flame spread index of not greater than 200 and a smoke-developed index of not greater than 450 where tested in accordance with ASTM E84 or UL 723, wall and ceiling finishes shall be permitted to be tested in accordance with NFPA 286. Materials tested in accordance with NFPA 286 shall meet the following criteria:
The interior finish shall comply with the following:
  1. During the 40 kW exposure, flames shall not spread to the ceiling.
  2. The flame shall not spread to the outer extremity of the sample on any wall or ceiling.
  3. Flashover, as defined in NFPA 286, shall not occur.
  4. The peak heat release rate throughout the test shall not exceed 800 kW.
  5. The total smoke released throughout the test shall not exceed 1,000 m2.

Related Code Sections


R302.9 Building Planning, Flame Spread Index and Smoke-Developed Index for Wall and Ceiling Finishes
Flame spread and smoke-developed indices for wall and ceiling finishes shall be in accordance with Sections R302.9.1 through R302.9.4 ...
Residential Code 2018 of Kansas > 3 Building Planning > R302 Fire-Resistant Construction > R302.9 Flame Spread Index and Smoke-Developed Index for Wall and Ceiling Finishes
2603.7 Plastic, Foam Plastic in Plenums as Interior Finish or Interior Trim
Foam plastic in plenums used as interior wall or ceiling finish, or interior trim, shall exhibit a flame spread index of 25 or less and a smoke ...
Building Code 2018 of Kansas > 26 Plastic > 2603 Foam Plastic Insulation > 2603.7 Foam Plastic in Plenums as Interior Finish or Interior Trim
10.2.3.3* Interior Finish, Contents, and Furnishings, Interior Wall and Ceiling Finish Materials Tested in Accordance With ASTM E84 or ANSI/UL 723
in 10.2.3.4 and 10.2.3.5, and shall be grouped in the following classes in accordance with their flame spread and smoke developed indexes. Class A: Flame ...
Life Safety Code 2018 of Kansas > 10 Interior Finish, Contents, and Furnishings > 10.2* Interior Finish > 10.2.3* Interior Wall or Ceiling Finish Testing and Classification > 10.2.3.3* Interior Wall and Ceiling Finish Materials Tested in Accordance With ASTM E84 or ANSI/UL 723
R302.10.1 Building Planning, Insulation
with the requirements of this section. They shall exhibit a flame spread index not to exceed 25 and a smoke-developed index not to exceed 450 where tested ...
Residential Code 2018 of Kansas > 3 Building Planning > R302 Fire-Resistant Construction > R302.10 Flame Spread Index and Smoke-Developed Index for Insulation > R302.10.1 Insulation
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