UFGS 21 13 19.00 20: Deluge Preaction Fire Sprinkler Systems

Unified Facilities Guide Specifications (UFGS) are a joint effort of the U.S. Army Corps of Engineers (USACE), the Naval Facilities Engineering Command (NAVFAC), the Air Force Civil Engineer Support Agency (HQ AFCESA), the Air Force Center for Engineering and the Environment (HQ AFCEE) and the National Aeronautics and Space Administration (NASA). UFGS are for use in specifying construction for the military services. This is one of those documents.