Patent ID: 8408321

Claim:
A dry pipe fire protection system for storage, comprising: a plurality of sprinklers disposed over a protection area and beneath a ceiling; wherein the storage comprises at least one rack of storage located on the protection area and containing at least one commodity in accordance with NFPA-13 (2002) commodity classes: Class I, Class II, Class III and Class IV, and Group A, Group B and Group C plastics, the at least one rack being located between the protection area and the plurality of sprinklers; and a network of pipes that supply water to the plurality of sprinklers, the network of pipes being designed to deliver water to a design area that contains a most hydraulically remote sprinkler of the plurality of sprinklers, the network of pipes being filled with a gas until at least one of the sprinklers is activated, the design area being selected from design areas provided in NFPA-13 (2002) for wet sprinkler systems for protection of the selected commodity.