Good morning: I have been reading through this e-mail chain and I noticed a couple of references to the ASTM A-53 pipe spec. I stand to be corrected, but out that in all of the data sheets that I have ever seen, for "Schedule 7" or for any other listed sprinkler pipes, with wall thicknesses less than Schedule 40, are to the ASTM A135/A795 specs. The only data sheets that I am familiar with that meet the ASTM A53 spec. is for Schedule 40 pipe.
Larry Keeping -----Original Message----- From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of John Denhardt via Sprinklerforum Sent: January 20, 2021 5:13 PM To: sprinklerforum@lists.firesprinkler.org Cc: John Denhardt <jdenha...@firesprinkler.org> Subject: Re: schedule 7 pipe? Warning! This email came from outside your company. Matt - fully understand the position you have. To answer your initial question specifically, I have heard of *no* push to change NFPA 13 with regard to piping material. 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.* *Expand your design department in 2021!* AFSA is taking its popular two-week Beginning Fire Sprinkler System Planning School on the road. From San Diego to Tampa Bay and stops in between, our technical experts will teach the basics of system layout based on the 2019 edition of NFPA 13. Space is limited. Enroll today at https://www.firesprinkler.org/schools. On Wed, Jan 20, 2021 at 5:03 PM Matt Grise via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote: > There is no doubt that thicker pipe lasts longer. > > However, when the owner of a warehouse specifies schedule 7 piping for > the sprinkler system in a hard bid, the installing contractor will be > using schedule 7. > > Matt > > -----Original Message----- > From: Lucas Kirn <lk...@ecscorrosion.com> > Sent: Wednesday, January 20, 2021 3:34 PM > To: Matt Grise <m...@afpsprink.com>; > sprinklerforum@lists.firesprinkler.org > Subject: RE: schedule 7 pipe? > > Matt, > > Having seen many cases of failed sch. 7 pipe over the past 10+ years I > would tell anyone willing to listen to stay far, far away from it. > Pipe schedule is the most basic form of corrosion/leak protection. The > thinner the pipe, the shorter the lifespan. > > I have also seen several instances where a GC or property owner came > back and tried to sue the installing sprinkler contractor because the > system started leaking after less than 10 years - through no fault of > the contractor. In my opinion installing an inferior product exposes > your company to more liability. > > Lucas Kirn, PE > > Engineered Corrosion Solutions > (314) 415-1387 | > https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fecscorrosion.com&c= > E,1,xpOWPXSiPcfMjrQXW0481anSuS-LAdKXY8Csy9gBfPzMFPZQ61fHBTnx1JPCTU5vcU > quYUcmx0Hs_Eg8_66rAgyi9fc2BhzVgD_0ACnhMOXX6-GkecLttgY,&typo=1 > > -----Original Message----- > From: Matt Grise <m...@afpsprink.com> > Sent: Wednesday, January 20, 2021 9:58 AM > To: sprinklerforum@lists.firesprinkler.org > Subject: schedule 7 pipe? > > Has there been any push/interest in allowing unlisted (standard ASTM > A53) schedule 7 steel pipe to be allowed by code in place of the listed "flow" > piping options? > > Matt > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.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
