A live/work nuclear reactor facility, perhaps...
Steve Leyton (Sent from my smartphone; please excuse typos and voice-to-text corruptions.) -------- Original message -------- From: Travis Mack via Sprinklerforum <sprinklerforum@lists.firesprinkler.org> Date: 2/6/21 1:30 PM (GMT-08:00) To: sprinklerforum@lists.firesprinkler.org Cc: travis.m...@mfpdesign.com Subject: Re: NFPA 13R & NFPA 14 - (flow rates) But domestic demand is added at the split with domestic and fire. The domestic wouldn’t flow through standpipes. It would have to be some crazy accessory use. Travis Mack, CFPS, CWBSP, RME-G, COC, SET Engineering Manager MFP Design <x-apple-data-detectors://2/0>3356 E Vallejo Ct<x-apple-data-detectors://2/0> Gilbert, AZ 85298<x-apple-data-detectors://2/0> 480-505-9271 ext. 700<tel:480-505-9271;700> C: 480-272-2471<tel:480-272-2471> travis.m...@mfpdesign.com<mailto:travis.m...@mfpdesign.com> www.mfpdesign.com<http://www.mfpdesign.com/> Send large files to us via: https://www.hightail.com/u/MFPDesign<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> ________________________________ From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> on behalf of David L. Miller, P.E. via Sprinklerforum <sprinklerforum@lists.firesprinkler.org> Sent: Saturday, February 6, 2021 2:27:55 PM To: 'Jose Anibal Castillo' <joseaniba...@gmail.com>; sprinklerforum@lists.firesprinkler.org <sprinklerforum@lists.firesprinkler.org>; st...@protectiondesign.com <st...@protectiondesign.com>; sbi...@wenteplumbing.com <sbi...@wenteplumbing.com> Cc: d...@engfirepro.com <d...@engfirepro.com> Subject: RE: NFPA 13R & NFPA 14 - (flow rates) I suspect that requirement is due more to the Domestic Demand in a very (extremely) large apartment building. Table A.9.6(b) (NFPA 13R, 2016 Edition) shows a Domestic Demand of 500 gpm for a building with 3500 Fixture Units. Without a plumbing code handy I don't know where the domestic demand would get to 1000 gpm, but I would assume it to be in the 7000 - 8000 Fixture Unit range based on Table 9.6(b). How likely is it to have 7000 or 8000 Fixture Units in a four-story building? It might be possibly to hit 1000 gpm domestic demand in a great big apartment building (250 gpm per floor) then add the 13R sprinkler demand to that to technically exceed the standpipe demand. David L. Miller, P.E. Engineered Fire Protection, LLC 11920 Richcroft Avenue Baton Rouge, Louisiana 70814 225-273-5040 > > > > In practice, probably not. As I'm sitting here today, I can't honestly > recall how/when that section came into being or when we may have last > tweaked it, but it's a CYA for sure. Maybe if I had a building projected > with 13R that had an accessory use like... I dunno, boat storage. A > marina hotel or apartment/complex with boat storage - yeah, that's the > ticket! The boat storage is solely for use by residents and guests, so > 13R could be applied if allowed by the AHJ and that standard prescribes > that design shall conform to 13 outside the dwelling units, so EH2 or some > such. But that still doesn't account for the fact that it would have to > be a high-rise building to require an automatic water supply for a Class 1 > system, but what about a Class 2 or 3 where water supply also has to be > automatic? > > I dunno, I'm just trippin' but regardless of whether this makes sense or > not, the preceding ramble is > my opinion only and does not represent NFPA or the NFPA 14 Technical > Committee, nor intended to serve as an interpretation of the standard. > > > Steve Leyton > Protection Design & Consulting > San Diego, CA > > > > > > -----Original Message----- > From: Sprinklerforum [mailto: > sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Jose Anibal > Castillo via Sprinklerforum > Sent: Thursday, February 04, 2021 7:43 AM > To: sprinklerforum@lists.firesprinkler.org > Cc: Jose Anibal Castillo <joseaniba...@gmail.com> > Subject: NFPA 13R & NFPA 14 > > In section 7.10.1.3.1.1 of the nfpa 14, 2019 states that in cases where > 13R system demand is higher than the standpipe demand it is supposed to be > chosen the higher demand. > > Is it even possible to have a residential sprinkler system with a higher > demand than the standpipe? > > > Regards > > > > Jos? A. Castillo > _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org<http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
