NFPA 13 with Residential Sprinklers
NFPA 13 with Residential Sprinklers
(OP)
NFPA 13 (2013) Figure 11.3.1.1(a) has always seemed ambiguous to me because it does not consider how the sprinkler heads are fed. What do they mean by adjacent in 11.3.1.1? Adjacent with respect to fire areas or adjacent on a branch line? I wrestle with this one frequently. Please have a look at the picture:

Riddle me this: which 4 heads are considered adjacent? A+BCD or A+XYZ?
A+BCD would have a higher demand, but are the heads considered adjacent?
A+XYZ are more likely considered adjacent (in my opinion), but they won't necessarily produce a higher demand.
Which ones would you calculate?
Thanks,
Matt

Riddle me this: which 4 heads are considered adjacent? A+BCD or A+XYZ?
A+BCD would have a higher demand, but are the heads considered adjacent?
A+XYZ are more likely considered adjacent (in my opinion), but they won't necessarily produce a higher demand.
Which ones would you calculate?
Thanks,
Matt





RE: NFPA 13 with Residential Sprinklers
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: NFPA 13 with Residential Sprinklers
The question I'm really looking to address here is: What do they mean by adjacent in 11.3.1.1? Adjacent with respect to the piping or adjacent with respect to compartments, walls & openings?
RE: NFPA 13 with Residential Sprinklers
RE: NFPA 13 with Residential Sprinklers
Travis Mack
MFP Design, LLC
www.mfpdesign.com