San Francisco Fire Code § 903.3 Automatic Sprinkler Systems

Fire Department Connections (FDC) shall have 3-inch national standard hose threads.

Contractors and personnel installing life safety equipment in San Francisco including, but not limited to, sprinkler systems, standpipes, and other automatic extinguishing systems must possess a valid current C-16 (fire protection) contractor license issued by the California Contractors State License Board (CA-CSLB). The SFFD does not approve or accept work of the types listed above conducted by persons or companies known not to hold the required license. Employees of companies hired to work on these life safety systems are also required to maintain a valid current Fire Sprinkler Fitter Certificate (sprinkler/standpipes) issued by the CA Office of the State Fire Marshal (CAL-OSFM).