Emphasis on the distinction between standpipe systems and sprinkler systems. The 14 has been tailored to allow the FDC to serve as a primary if other systems fault or fail, such as pump, PRV's, etc. FDC should connect downstream and be able to supply the entire demand, with consideration given to buildings that are taller than the responding FD's capacity to pump.
The foregoing is my opinion only and does not necessarily represent the opinion or intent of the NFPA 14 Technical Committee on Standpipe and Hose Systems. Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Tuesday, August 13, 2013 9:09 AM To: [email protected] Subject: Re: High rise- non seismic zone - 2 water supplies? Be careful on your digs. It was intentionally added to avoid having to size the FDC based on system demand in recognition that the FDC will typically slam the main supply check closed on typically occupancy hazard facilities but facilities like storage and high rise, it depends (sprinklers only since as pointed out standpipes FDC are calc's). Also if the main supply fails, the pumper truck can always juice their supply up further. Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On Aug 13, 2013, at 8:23 AM, <[email protected]> wrote: > An FDC "can pump supplemental water" 3.8.1.4 (2013). By definition a supplement is added to something. Not a replacement or a second water supply? > > Sorry I couldn't resist the opportunity to take a dig at the FDC definition in 13. > > Ron F _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler .org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
