I’d be more concerned that the straps are not compatible with the cpvc. I agree it was lazy on the part of the hvac installer.
Travis Mack, CFPS, CWBSP, RME-G, SET 480-505-9271 x700 MFP Design, LLC www.mfpdesign,com Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone > On Mar 27, 2020, at 1:50 PM, cliff--- via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > > Tom, > > How much weight do you think a piece of flex duct for residential is going to > apply to the pipe? It looks like the bracket for the diffuser is only about > a foot away and has 4 screws holding it. I don’t think that is the same as a > piece of sheet metal duct being supported by sprinkler pipe. > > This is just my opinion. Not based on anything from NFPA 13D > > Cliff Whitfield, SET > President > > Fire Design, Inc. > 600 W. Bypass Hwy. 19E > Suite 202 > Burnsville, NC 28714 > Ph: 828-284-4772 > > <image002.jpg> > > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Tom Wellen via Sprinklerforum > Sent: Friday, March 27, 2020 4:36 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Tom Wellen <tgwel...@gmail.com> > Subject: NFPA 13D > > HVAC duct was found being supported by a CPVC pipe. The pipe is supported by > holes through the wood joists. I thought NFPA 13D would prohibit sprinkler > pipe from supporting other trades, but I don't seem to find it. > > It's spelled out in NFPA 13, 9.1.1.8 and 13R, 6.13. Did I miss it in NFPA 13D? > > > Tom Wellen > > Virus-free. www.avast.com > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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