The Bracket IS the LAST hanger, per Flex manufacturers I have talked to, but, NFSA gave us an opinion that a 13" arm-over to a Flex still needs a hanger if you are over 100 psi, 'cause that's what the book says.
*Jeff Garrison* *248-331-6164 - cell* On Fri, May 29, 2020 at 1:36 PM Dewayne Martinez via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote: > Thanks everyone for the input. My fitter brought this up to me and after > I read the sections I was still not sure. John’s comment makes perfect > sense. > > > > Thank you, > > > > Dewayne Martinez > > Fire Protection Design Manager > > > > *TOTAL* *Mechanical* > > *Building* *Integrity* > > > W234 N2830 Paul Rd. > Pewaukee, WI 53072 > > dmarti...@total-mechanical.com > > Ph: 262-522-7110 > > Cell: 414-406-5208 > > http://www.total-mechanical.com/ > > > > > > *From:* Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> *On > Behalf Of *John Denhardt via Sprinklerforum > *Sent:* Friday, May 29, 2020 10:41 AM > *To:* sprinklerforum@lists.firesprinkler.org > *Cc:* John Denhardt <jdenha...@firesprinkler.org> > *Subject:* Re: NFPA 13, 2013 ed - hangers and pressures above 100psi > > > > In my opinion, no. The flexible drop assembly is anchored to the > ceiling. The point of this requirement is to keep the pendent sprinkler > from moving upwards during activation. The flexible drop assembly > accomplishes this requirement. > > > > 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/> > > *Help AFSA “Sound the Alarm” about sprinklers!* > > AFSA’s charitable partner the American Red Cross is educating millions > through its Home Fire Preparedness Campaign. Help us support the inclusion > of fire sprinklers in their messaging. Donate today! > <https://www.redcross.org/donate/cm/afsa-pub.html/> > > > > > > On Fri, May 29, 2020 at 11:28 AM Dewayne Martinez via Sprinklerforum < > sprinklerforum@lists.firesprinkler.org> wrote: > > Is the hanger on the pipe supplying a flexible drop to a pendant sprinkler > in a ceiling still required to one that prevents upward movement? > > Sections 9.2.3.4.4.1,9.2.3.5.2.2 > > > > Thank you, > > > > Dewayne Martinez > > Fire Protection Design Manager > > > > *TOTAL Mechanical* > > *Building* *Integrity* > > > W234 N2830 Paul Rd. > Pewaukee, WI 53072 > > dmarti...@total-mechanical.com > > Ph: 262-522-7110 > > Cell: 414-406-5208 > > http://www.total-mechanical.com/ > > > > > > _______________________________________________ > 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 >
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