21 13 00 Fire-Suppression Sprinkler Systems
21 13 16 Dry-Pipe Sprinkler Systems
21 13 13Wet-Pipe Sprinkler Systems21 13 16Dry-Pipe Sprinkler Systems21 13 19Preaction Sprinkler Systems21 13 23Combined Dry-Pipe and Preaction Sprinkler Systems21 13 26Deluge Fire-Suppression Sprinkler Systems21 13 29Water Spray Fixed Systems21 13 36Antifreeze Sprinkler Systems21 13 39Foam-Water Systems