Ok put your skates on if your going to go out on the ice with me. It’s a 13R building. You want to use a type of sprinkler not available in the residential family so are applying 13 in so far as it is applicable (aka as defined by outside the dwelling unit). QR spray sprinklers are accepted for dwelling units while applying the LH design basis (as per 13). If we can apply the hybrid design basis fro OH in a 13R system, why not for LH? That’s my trail of dots. Since it is not explicitly drawn in the standard, discuss with the AHJ.
Roland Huggins, PE - Senior VP Engineering American Fire Sprinkler Assn. Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> Fire Sprinklers Saves Lives > On Feb 7, 2018, at 4:01 PM, Fpdcdesign <fpdcdes...@gmail.com> wrote: > > I wasn't sure I could justify these rooms as outside the dwelling unit when > the crux of my argument is that the entire building is a dwelling unit. > > I told the owner that if we went with institutional sprinklers, we would need > to change the design to NFPA 13, at an additional cost. Suddenly the > requirement went away. > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > 860-535-2080 <tel:860-535-2080> (ofc) > 860-553-3553 <tel:860-553-3553> (fax) > 860-608-4559 <tel:860-608-4559> (cell) > > >> On Feb 7, 2018 at 6:19 PM, <Roland Huggins >> <mailto:rhugg...@firesprinkler.org>> wrote: >> >> There’s also the hybrid room design method for outside the dwelling uniting >> 13R: 7.2.3.1 (so deemed a more demanding design basis) that could be applied. >> >> >> Roland Huggins, PE - Senior VP Engineering >> American Fire Sprinkler Assn. >> Dallas, TX >> http://www.firesprinkler.org <http://www.firesprinkler.org/> >> >> Fire Sprinklers Saves Lives >> >> >> >> >>> On Feb 7, 2018, at 6:43 AM, Fpdcdesign <fpdcdes...@gmail.com >>> <mailto:fpdcdes...@gmail.com>> wrote: >>> >>> I am working on a group home which is being designed as NFPA 13R (2010). >>> The owner is requiring instutional sprinklers in the bedrooms only. I >>> cannot find any institutional residential sprinklers, so we are going to >>> have to use commercial QR instutional sprinklers. Section 6.2.1.3.1 states >>> that when using QR sprinklers, the density/area shall be a minimum of 0.10 >>> gpm/sqft over the entire dwelling unit. In this situation, based on the >>> NFPA 13R definition of dwelling unit, we would need to calculate 0.10 >>> gpm/sqft over the entire 2 story house. That doens't make sense. Am I >>> missing something? >>> >>> Todd G Williams, PE >>> Fire Protection Design/Consulting >>> Stonington, CT >>> 860-535-2080 <tel:860-535-2080> (ofc) >>> 860-553-3553 <tel:860-553-3553> (fax) >>> 860-608-4559 <tel:860-608-4559> (cell) >>> _______________________________________________ >>> Sprinklerforum mailing list >>> Sprinklerforum@lists.firesprinkler.org >>> <mailto: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 >> <mailto: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 > <mailto:Sprinklerforum@lists.firesprinkler.org> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org>
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