A light hazard wet pipe sprinkler system using quick-response sprinklers with a 18 ft (5.

In a light hazard wet pipe system with quick-response sprinklers and a ceiling height of 18 feet, a 0.32 area reduction percentage is commonly allowed for the remote area. This accounts for the lower fire load and risk associated with light hazard occupancies.

References: NFPA 13 includes provisions for area/density reductions under specific conditions, which help tailor the sprinkler system design to the occupancy's specific fire risk profile.