Can you use the remote area reduction utilizing quick response heads and the other criteria mentioned in 11.2.3.2.3.1. This is in the 2010 edition I dont have the 13 edition in front of me right now.
On Wed, May 3, 2017 at 3:54 PM, Micah Davis, SET < [email protected]> wrote: > I have a mixed use Retail/Residential building protected per NFPA 13. I am > calcing the retail area at 0.20 gpm. The space is not large enough to get > the full 1500 sq ft so I have a few heads in the adjacent corridor in the > calcs to make up the difference. Normally, I calc the OH heads at 0.20 > gpm/sq ft and the LH heads at 0.10 gpm/sq ft. However, the engineer has > asked me to calc the LH heads at the 0.20 gpm rate since the wall > separating the two areas is not a rated wall. The problem I have with this > is that the LH heads are spaced for LH occupancy so they will become the > most demanding sprinklers (14 ft x 12 ft spacing = 168 sq ft x 0.20 gpm = > 33.6 gpm as opposed to the OH heads at 125 sq ft x 0.20 gpm = 25 fpm). This > doesn't seem right, but I cannot find a foothold in the standard to begin > the "discussion". 2013 edition is the adopted standard and it reads "Each > sprinkler in the design area and the remainder of the hydraulically > designed system shall discharge at a flow rate at least equal to the > stipulated minimum water application rate (density) multiplied by the area > of sprinkler operation (23.4.4.6.1)" This seems to support his request. Any > help out there? > > > Thank you, > Micah Davis > www.dynamicfiredesigns.com > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > > -- Shawn Foor, SET *FOOR DESIGN, LLC* *6227 S. 87TH E. AVE* *TULSA, OK 74133* *P:918-237-1400*
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