UpCodes logo
Jump To Full Code Chapter
The sprinkler pipe shall be sized using the prescriptive method in Section 612.5.3.2 or by hydraulic calculation in accordance with NFPA 13D. The sprinkler pipe size from the water supply source to a sprinkler shall be not less than 3/4 of an inch (20 mm) in diameter. Threaded adapter fittings at the point where sprinklers are attached to the piping shall be not less than 1/2 of an inch (15 mm) in diameter.

Related Code Sections

P2904.6.1 Water Supply and Distribution, Method of Sizing Pipe
Piping supplying sprinklers shall be sized using the prescriptive method in Section P2904.6.2 or by hydraulic calculation in accordance with NFPA 13D ...
23.1.3 Plans and Calculations,
of securing sprinklers when applicable. All control valves, check valves, drain pipes, and test connections. Make, type, model, and size of alarm or dry ...
23.1* Plans and Calculations, Working Plans
piping. Location of partitions. Location of fire walls. Occupancy class of each area or room. Location and size of concealed spaces, closets ...