All the listed flexible drop installation hardware restrain the sprinkler, but not necessarily to the ceiling. Some have gripping hardware supported by threaded rod “from the structure above". The gripping hardware is useful when the architect has some new fangled, odd ceiling design that does not work with the ceiling mounted flexible drop hardware. But the rod length is limited. It would be helpful to see added verbiage that opens the door for allowing miscellaneous steel to provide “structure” within that limited rod length. This needs to allow for something relatively easy for the sprinkler contractor to do, such as a judgment letter from the flexible drop manufacturer specific to the installation rather than a PE stamped design.
Allan Seidel St. Louis, MO > On May 29, 2020, at 11:56 AM, John Denhardt via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > I will at the 2022 edition and see if we can add something. Maybe in the > Annex. > > 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 <http://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 12:52 PM Ron Greenman via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org > <mailto:sprinklerforum@lists.firesprinkler.org>> wrote: > I'd agree with John for the very same reason he thinks (intent of the > requirement) no, but I'll bet there are AHJs out there that will read the > rulebook differently, citing no exception stated, and without concern for > intent, and say yes, you need to do it. And probably even some that agree > that the intent is met when using flex drops but since there is no stated > exception it is now enforcing the letter because that's the mandate, or even > merely a CYA. > > > Ron Greenman > > rongreen...@gmail.com <mailto:rongreen...@gmail.com> > > 253.576.9700 > > The Universe is monstrously indifferent to the presence of man. -Werner > Herzog, screenwriter, film director, author, actor and opera director (1942-) > > > On Fri, May 29, 2020 at 8:40 AM John Denhardt via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org > <mailto:sprinklerforum@lists.firesprinkler.org>> wrote: > 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 <http://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 > <mailto: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 <mailto:dmarti...@total-mechanical.com> > Ph: 262-522-7110 > > Cell: 414-406-5208 > > http://www.total-mechanical.com/ <http://www.total-mechanical.com/> > > > <image001.png> > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > <mailto:Sprinklerforum@lists.firesprinkler.org> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > <mailto:Sprinklerforum@lists.firesprinkler.org> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > <mailto:Sprinklerforum@lists.firesprinkler.org> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-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
