Abstract
A full-scale test program 1 was conducted at the Factory Mutual Research Corporation test facility to determine if existing or new technology fire sprinkler systems are capable of providing acceptable protection for high-piled storage found in warehouses and warehouse-type retail stores. Nine large-scale fire tests were conducted with double-row rack storage arrangements containing a cartoned Group A Unexpanded Plastic commodity. Protection was provided by Extra Large Orifice, 0.64 in. (16 mm), sprinklers installed at the ceiling only. Test variables included: building heights of 22 to 27 ft (6.7 to 8.2 m); storage heights of 14 to 20 ft (4.2 to 6.1 m), in conjunction with ignition location; sprinkler temperature rating; sprinkler discharge density; type of shelving (slatted wood, solid wood or wire mesh); flue spacing; and the presence of draft curtains. Test results show that a 0.60 gpm/ft2 (24 mm/min) discharge density supplied over a 2000 ft2 (186 m2) design area will protect such storage; and reduced...
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