Page 472 - 2018_IFC

FLAMMABLE AND COMBUSTIBLE LIQUIDS

DURATION WATER SUPPLY (hours) 2 MINIMUM DURATION SPRINKLERS AND HOSE STREAM (hours) 2

DURATION AFFF SUPPLY (minimum) 15 MINIMUM HOSE STREAM DEMAND (gpm) 500

Hose stream demand d (gpm) 500 Number of sprinklers operating 1. Six sprinklers each on two levels 2. Hydraulically most remote 12 sprinklers

IN-RACK SPRINKLER ARRANGEMENT AND DEMAND c
Number of sprinklers operating Three sprinklers per level Minimum nozzle pressure 30 psi (standard orifice) or 14 psi (large orifice)

Minimum nozzle pressure (psi) 30 IN-RACK SPRINKLER ARRANGEMENT AND DEMAND Racks 9 to 12 feet Not Applicable

TABLE 5704.3.6.3(7) AUTOMATIC AFFF WATER PROTECTION REQUIREMENTS FOR RACK STORAGE OF LIQUIDS IN METAL CONTAINERS GREATER THAN 5-GALLON CAPACITY a, b On-end storage of drums on pallets, up to 25 feet 1. Ordinary temperature sprinkler up to 10 feet apart horizontally 2. One line sprinklers above each level of storage 3. Locate in longitudinal flue space, staggered vertically 4. Shields required for multiple-level 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square foot

Ordinary temperature sprinklers 2,500 System shall be a closed-head wet system with approved devices for proportioning aqueous film-forming foam. Maximum spacing 100 ft 2 /head Using extra-large orifice sprinklers under a ceiling 30 feet or less in height. Minimum aisle width is 7.5 feet.

CEILING SPRINKLER DESIGN AND DEMAND Area (square feet) High- temperature sprinklers 1,500 Except as modified herein, in-rack sprinklers shall be installed in accordance with NFPA 13. Hose stream demand includes 1 1 / 2 -inch inside hose connections, where required. CEILING SPRINKLER DESIGN AND DEMAND Area (square feet) Ordinary High temperature temperature Not 2,000 b Applicable

Density (gpm/ft 2 ) 0.30 The height of storage shall not exceed 25 feet. Density (gpm/ft 2 ) 0.60 This table shall not apply to racks with solid shelves.

CLASS LIQUID IA, IB, IC and II For SI: L/min/m 2 . STORAGE HEIGHT Maximum 20-foot storage height For SI: L/min/m 2 .

2018 INTERNATIONAL FIRE CODE ® a. b. c. d. a. b. 439
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