Such construction is difficult to reconcile on the FP side when the design team, including the structural team, is told the structure between building A and building B is essentially a third structure and the two buildings are to be built such that one side can burn and fall away without affecting the other building.
> On Jan 24, 2020, at 10:51 AM, Pete Schwab via Sprinklerforum > <[email protected]> wrote: > > This may be what you are looking for if you have horizontal exits. > > > > <image001.png> > > > <image002.png> > > Peter Schwab > VP of Purchasing and Engineering technologies > > Wayne Automatic Fire Sprinklers Inc. > 222 Capitol Court > Ocoee, Fl 34761 > > Mobile: (407) 468-8248 > Direct: (407) 877-5570 > Fax: (407) 656-8026 > > www.waynefire.com <http://www.waynefire.com/> > > <image003.jpg> > > <image004.png> > > I sleep in a sprinklered home, do you? > > > From: Sprinklerforum <[email protected] > <mailto:[email protected]>> On Behalf Of Steve > Leyton via Sprinklerforum > Sent: Wednesday, January 22, 2020 12:38 PM > To: [email protected] > <mailto:[email protected]> > Cc: Steve Leyton <[email protected] > <mailto:[email protected]>>; Zachary Siegrist > <[email protected] <mailto:[email protected]>> > Subject: RE: standpipe horizontal exit calculation question > > The standard doesn’t really address this condition, but I think it’s > consistent with the intent and firefighting strategies that if you have to > add a 250 GPM allowance for a standpipe that’s only serving one side of a > 2-hour building separation, you would add it to the demand on the valve side > of the separation because that is where they’d be coming from. But > ultimately, it might be best to add it to whichever fire area would create > the highest demand. The standard informs that when a single structure is > divided into two or more “buildings” by such separations, you have to meet > all the demands if they are taken as separate buildings. So if one area is > large enough to require three standpipes, then you’d need to prove 1,000 GPM > for that area and lower flows for the others. > > MY OPINION ONLY. > > Steve Leyton > > From: Sprinklerforum [mailto:[email protected] > <mailto:[email protected]>] On Behalf Of Zachary > Siegrist via Sprinklerforum > Sent: Tuesday, January 21, 2020 1:15 PM > To: [email protected] > <mailto:[email protected]> > Cc: Zachary Siegrist > Subject: standpipe horizontal exit calculation question > > In a building recognized as part of separate fire areas, the annex material > in NFPA 14 Section 7.10.1.1 <http://7.10.1.1/> states the the total supply > can be calculated based on the single bldg/ fire area requiring the greatest > number of standpipes. In this scenario, the physical separation between fire > areas is functioning as a horizontal exit requiring a hose valves at the > horizontal exit. One side of the wall meets the 100 ft. + 30 ft. hose stream > exemption while the other side does not. The hose valves will be fed via an > independent vertical standpipe riser. > Is this hose valve located at the horizontal exit calculated as part of the > area it is located in or calculated as part of the building it serves on the > opposite side of the horizontal exit? I thought this was addressed > somewhere in 14 but I can't locate it. > > Can anyone help me out this afternoon? > > Zach > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > <mailto:[email protected]> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org>
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