3208.2.2.1 Fire protection.
FC § 3208.2.2.1
Fire protection for racks with solid shelving shall be in accordance with NFPA 13, as modified by FC Appendix B. FC Table 3208.3Required Flue Spaces for Rack Storage Rack ConfigurationSprinkler ProtectionSprinkler at the Ceiling with or Without Minimumin-Rack SprinklersIn-Rack Sprinklers at Every TierNon-sprinklered25 feet> 25 feetAny heightAny heightStorage HeightOption 1Option 2Rack ConfigurationSprinkler ProtectionSprinkler at the Ceiling with or Without Minimumin-Rack SprinklersIn-Rack Sprinklers at Every TierNon-sprinklered25 feet> 25 feetAny heightAny heightStorage HeightOption 1Option 2Single-row rackTransverse flue spaceSize b3 inchesNot Applicable3 inchesNot RequiredNot RequiredVertically alignedNot RequiredNot ApplicableYesNot ApplicableNot RequiredLongitudinal flue spaceNot RequiredNot ApplicableNot RequiredNot RequiredNot RequiredDouble-row rackTransverse flue spaceSize b6 inches a3 inches3 inchesNot RequiredNot RequiredVertically alignedNot RequiredNot RequiredYesNot ApplicableNot RequiredLongitudinal flue spaceNot Required6 inches6 inchesNot RequiredNot RequiredMulti-row rackTransverse flue spaceSize b6 inchesNot Applicable6 inchesNot RequiredNot RequiredVertically alignedNot RequiredNot ApplicableYesNot ApplicableNot RequiredLongitudinal flue spaceNot RequiredNot ApplicableNot RequiredNot RequiredNot Required For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. a. Three-inch transverse flue spaces shall be provided at least every 10 feet where ESFR sprinkler protection is provided. b. Random variations are allowed, provided that the configuration does not obstruct water penetration.
