I agree with everything. This wasnt even my project. Was helping out a customer of a colleague.
My initial reaction was of course a single EC sidewall for LH is acceptable. The installing contractor was pushing back saying you couldn’t do an EC HSW for light hazard under the door. That was when I started to dig further and noticed the missing wording in EC HSW. Installer was pushing back an ECOH HSW would cause the overhead to over discharge and no longer work. I suggested to stop spending so much time and $$ on this. Go with the ECOH HSW and pipe with same size as overhead branch piping. That way there can be no push back. Just another fun Friday at the office. Travis Mack, CFPS, CWBSP, RME-G, SET 480-505-9271 MFP Design, LLC www.mfpdesign,com Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone > On Aug 23, 2019, at 3:25 PM, Sean.VanGaal via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > The standard recognizes EC is okay. The standard recognizes the hazard can > be treated as light in the standard spray section. I would assume this was > just missed or overlooked with regards to the EC section when they added the > “light hazard” part to the standard spray section. > > My opinion is this should be treated as LH but since you don’t have concrete > evidence in the book pointing to a Light hazard EC sidewall you should have a > conversation with the AHJ. Personally I think it unnecessary to have an > 11.2K sprinkler required at this location for the extremely slim chance of a > fire starting under and open garage door. Further, you said it is an OH > building, you are just looking to control a fire from spreading, not > suppressing the fire. If the 8K EC sidewall can’t control a fire under your > 16x14 door long enough for the fire department to show up, you still have all > those other sprinklers around the door to help out. With oodles and oodles > of safety margin at every step of the way to get to your final design. > Again, this is my opinion and it all comes down to the person on the other > side of table if they agree or not. > > I actually submitted a public input on this very topic for the 2022 edition > to try to get LH added to the EC section because we have run across this a > few times. Fingers crossed it goes through! > > Thanks, > Sean VG > > From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] > On Behalf Of Travis Mack via Sprinklerforum > Sent: Friday, August 23, 2019 2:26 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Travis Mack <tm...@mfpdesign.com> > Subject: [EXTERNAL] Re: Ex cov under OH Door > > I agree that the ex cov sprinklers can be used. But do you need one listed > for Ordinary Hazard or can you use one listed for light hazard. > > Spray sprinklers specifically say light is acceptable. Ex cov doesn’t say > light is acceptable. > > Question comes from an owner question. They have OH doors that are 16x14. > Current design is 1 spray sprinkler on each side because 14’ max spacing. > Owner wants 1 sprinkler. Question is just if can use ex cov sidewall listed > for light or do they need to go OH listing. > > Travis Mack, CFPS, CWBSP, RME-G, SET > 480-505-9271 > MFP Design, LLC > www.mfpdesign,com > Send large files to MFP Design via: > https://www.hightail.com/u/MFPDesign > > Sent from my iPhone > > On Aug 23, 2019, at 2:21 PM, Mike Stossel via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > NFPA 2013 2019 - 11.3.2 (8) Extended coverage sprinklers installed to protect > areas below a single overhead door(s) > > Mike Stossel SET > <image002.png> > 36 Barren Road > East Stroudsburg, PA 18302 > Office: 973-670-2627 > m...@knssprinkler.com > > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Travis Mack via Sprinklerforum > Sent: Friday, August 23, 2019 5:13 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Travis Mack <tm...@mfpdesign.com> > Subject: Ex cov under OH Door > > Question has been brought up. Can you use ex cov sidewall listed for light > hazard under overhead door in an ordinary hazard building? > > I was under the impression it was not an issue. There is wording in section > on standard spray sidewall that you can. But the same wording is not in the > section under ex cov sidewall sprinklers. Since location has meaning, it made > me question. > > > > Travis Mack, CFPS, CWBSP, RME-G, SET > 480-505-9271 > MFP Design, LLC > www.mfpdesign,com > Send large files to MFP Design via: > https://www.hightail.com/u/MFPDesign > > Sent from my iPhone > _______________________________________________ > 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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