I think Ryan is onto the issue. If it is in the specification, request clarification from the engineer. A large percentage of time, the engineer is not clear enough when the specification is written.
Thanks, John John August Denhardt, PE *Vice President, Engineering and Technical Services* *American Fire Sprinkler Association* m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Our members are at the heart of everything we do.* *AFSA Summer Sale!* For a limited time only, AFSA is offering members up to 50% off its on-demand recorded webinars! Featuring the most sought-after thought leaders, AFSA On-Demand offers a superior learning experience with ability to earn CEU and CPD credits anytime, anywhere. Visit http://www.firesprinkler.org/ondemand to learn more. On Wed, Aug 26, 2020 at 2:30 PM Jerry Van Kolken via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote: > Ryan, > That was my thinking. We always us the restraining straps on our hanger > assemblies. > > Mike, > The products I'm using are listed. This is a requirement from the client > side. > > > > Jerry Van Kolken > Millennium Fire Protection Corp. > 2950 San Luis Rey Rd. > Oceanside, CA 92058 > (760) 722-2722 FX 722-2730 > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Hinson, Ryan via Sprinklerforum > Sent: Wednesday, August 26, 2020 11:11 AM > To: sprinklerforum@lists.firesprinkler.org > Cc: Hinson, Ryan <rhin...@burnsmcd.com> > Subject: RE: C-Clamp Hangers > > Hanger attachments are being confused with bracing attachments. > - NFPA 13 (2019) Section 18.5.11.10 explicitly DOES NOT allow > C-clamps > used for seismic bracing structural attachments with or without > restraining straps unless specifically listed for such use. > - Section 18.7.1 allows their use for hangers in seismically active > areas when a restraining strap is included. > - Chapter 17 explicitly DOES allow listed use of c-clamps for hangers > alone. > > See commentary for further discussion and pictures depicting their allowed > hanger usage. > > Hope this helps, > > Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Senior Fire Protection > Engineer O 952-656-3662 \ M 763-688-4045 \ F 952-229-2923 > rhin...@burnsmcd.com \ burnsmcd.com > 8201 Norman Center Drive, Suite 500 \ Minneapolis-St. Paul, MN 55437 > *Registered in: LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems > Layout > > > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Jerry Van Kolken via Sprinklerforum > Sent: Wednesday, August 26, 2020 12:52 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: jvankol...@mfpc.us > Subject: C-Clamp Hangers > > Does anyone know the reasoning Why you would not be allowed to use C-Clamps > for your hanger attachments? > > > > I've had a couple of specs have this requirement pass by my desk recently. > > > > Jerry Van Kolken > > Millennium Fire Protection Corp. > > 2950 San Luis Rey Rd. > > Oceanside, CA 92058 > > (760) 722-2722 FX 722-2730 > > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.fires > prinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org > &data=02%7 > C01%7Crhinson%40burnsmcd.com > %7C1d14008726f74fa34d4308d849e89359%7Cbfbb9a2b6d > > 994e78b3c795005d555c8b%7C0%7C0%7C637340610543326549&sdata=%2Bt0YUDv8iKf9 > xPab8hEUmLbdCBOX%2FIZ5VDKB7jaeLls%3D&reserved=0 > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
