5704.3.7.5.1 Fire extinguishing systems.
FC § 5704.3.7.5.1
Liquid storage rooms shall be protected throughout by sprinkler systems installed in accordance with FC Chapter 9, FC Tables 5704.3.6.3(4) through 5704.3.6.3(8) and FC Table 5704.3.7.5.1 and the construction codes, including the Building Code. In-rack sprinklers shall additionally comply with the requirements of NFPA 13, as modified by FC Appendix B, and the construction codes, including the Building Code. Foam fire extinguishing systems and aqueous film-forming foam (AFFF) fire extinguishing systems shall not be used except when approved by the commissioner and the Commissioner of Buildings. Protection criteria developed from fire modeling or full-scale fire testing conducted at an approved testing laboratory are allowed in lieu of the protection as required in FC Tables 5704.3.6.3(2) through 5704.3.6.3(8) and FC Table 5704.3.7.5.1 and the construction codes, including the Building Code when approved by the commissioner and the Commissioner of Buildings. FC Table 5704.3.7.5.1Automatic AFFF-Water Protection Requirements for Solid-Pile and Palletized Storage of Liquids in Metal Containers of 5-Gallon Capacity or Less a, b Package TypeClass LiquidCeiling Sprinkler Design and DemandStorage Height(feet)Hose Demand(gpm) cDuration AFFF Supply(minimum)Duration Water Supply(hours)Density(gpm/ft2) Area(square feet)Temperature ratingMaximum spacingOrifice size(inch) CartonedIB, IC, II and III0.402,000286°F100 ft2 / head0.53111500152UncartonedIB, IC, II and III0.302,000286°F100 ft2 / head0.5 or 0.53112500152 For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square foot = 0.0929 m2, 1 gallon per minute = 3.785 L/m, 1 gallon per minute per square foot = 40.75 L/min/m2, °C. = (°F-32)/1.8. a. System shall be a closed-head wet system with approved devices for proportioning aqueous film-forming foam. b. Ceiling heights shall not exceed 30 feet. c. Hose stream demand includes 1 1/2-inch inside hand hose, when required.
