Designing Combined Standpipe and Sprinkler Systems.
Plumbing Systems and Design 22006; Vol. 5: No. 1
by Roy, Matthew
Combination standpipe and sprinkler systems are commonplace in most multi-occupant residential and commercial buildings. In these and other light and ordinary hazard occupancies, National Fire Protection Association, NFPA, standards allow the combined system to share the same piping, with the result of reduced installation costs and system maintenance requirements without compromised reliability. When used together in the past, the applicable standards, NFPA 13 (the standard for sprinkler system installation) and NFPA 14 (the standard for standpipe and hose system installation), produced system designs with conflicts and inconsistencies. The author believes that the most recent versions of the standards work well together when applied to light and ordinary hazard class buildings. Based on assumptions regarding local code requirements and use of the pipe method schedule of design, this article discusses how to employ both NFPA 13 and NFPA 14 in the design of light or ordinary duty combination standpipe and sprinkler systems. The author first presents approaches to design found in the individual standards, concluding that the two closely agree regarding calculation of water supply requirements. He presents an eight-step procedure for designing a combined system and provides an example using a 10-floor multi-usage residential and commercial building.
Available at : ASPE Publications