Annex A.4.3.5 suggests that aircraft hangars not governed by NFPA 409 would be EH1.
Cary Webber Reliable Automatic Sprinkler Company Technical Services Department > On Feb 19, 2021, at 4:20 PM, Travis Mack via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > CAUTION: This email originated from outside of the organization. Do not > click links or open attachments unless you can confirm the sender and know > the content is safe. > > > While I agree it is not our “job” as NICET techs to classify the hazard, that > doesn’t exempt us from all responsibility. When the EOR classifies an area as > light hazard where they are storing group A plastics to 10’ doesn’t mean that > we just arbitrarily follow something we know is wrong. > > When the architect and EOR misapply 13R when 13 is needed, we just don’t > follow along blindly. I have never seen a hangar as OH1 and it seems very > light. Not saying it couldn’t be OH1, but it doesn’t pass the sniff test on > the first pass for me. > > > Travis Mack, CFPS, CWBSP, RME-G, COC, SET > > Engineering Manager > > MFP Design > > <x-apple-data-detectors://2/0>3356 E Vallejo Ct<x-apple-data-detectors://2/0> > > Gilbert, AZ 85298<x-apple-data-detectors://2/0> > > 480-505-9271 ext. 700<tel:480-505-9271;700> C: 480-272-2471<tel:480-272-2471> > > travis.m...@mfpdesign.com<mailto:travis.m...@mfpdesign.com> > > https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041988099%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Kepf2%2B9PXFt9SveZsBQT9dezuATkAp7w1ZBRIuVe5vM%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041988099%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Kepf2%2B9PXFt9SveZsBQT9dezuATkAp7w1ZBRIuVe5vM%3D&reserved=0> > > > > Send large files to us via: > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041988099%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=1thCR%2BjvPM4kbdKSa90cmYO3vUa40MtP%2F4OZtWG5GpQ%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041988099%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=1thCR%2BjvPM4kbdKSa90cmYO3vUa40MtP%2F4OZtWG5GpQ%3D&reserved=0> > > ________________________________ > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> on > behalf of Ron Greenman via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> > Sent: Friday, February 19, 2021 5:14:02 PM > To: sprinklerforum@lists.firesprinkler.org > <sprinklerforum@lists.firesprinkler.org> > Cc: Ron Greenman <rongreen...@gmail.com> > Subject: Re: Group III Aircraft Hangar > > I'm tempted to look at the actual hazard rather than what the commodity is > called. Airplane house/garage usually means hanger with the associated > hazards, but if you just have aluminium tubes with appendages...? > Presumably less activity than a typical warehouse, no combustible liquids > like in a parking garage and far less transients. Shielding of the floor by > the wings but private planes suggests A size aircraft so minimal, and > what's the likelihood of a hugely hazardous build-up of debris? I > think they may be right. I think it needs questioning but the final say is, > as usual, the AHJ. And the usual admonitions to CYA. Defining the hazard is > not your call. From > SFPE/NSPE/NICET/ASCET/NCEES Joint Position on the Engineer and the > Engineering Technician Designing Fire Protection Systems4.2.1 Engineering > Documents > The Engineer is responsible for the preparation of engineering documents > that establish the objectives and design criteria of the system(s). "Identify > occupancy type(s), areas to be protected (or omitted), and hazard > classification(s)" > > >> On Fri, Feb 19, 2021 at 3:21 PM Travis Mack via Sprinklerforum < >> sprinklerforum@lists.firesprinkler.org> wrote: >> >> I have been informed that a design team has classified a Group III hangar >> as an S-1 occupancy. As such, they have indicated this to be designed to >> OH1. For the life of me, I can't see an aircraft hangar being anything >> less than EH1. This hangar is about 60k sq ft. >> >> Has anyone ever found a situation to design an aircraft hangar to OH1. >> This will only house unfueled aircraft and no maintenance will be performed >> in the hangars. This it to house "personal" aircraft as I understand it. >> >> What is the collective thought on this? >> >> Travis Mack, CFPS, CWBSP, RME-G, COC, SET >> Engineering Manager >> MFP Design >> 3356 E Vallejo Ct >> Gilbert, AZ 85298 >> 480-505-9271 ext. 700 C: 480-272-2471 >> travis.m...@mfpdesign.com >> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=uCDsmZH8kDFzImS7LEYgkuRXOkEZf7TmKwVg82tXbec%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=uCDsmZH8kDFzImS7LEYgkuRXOkEZf7TmKwVg82tXbec%3D&reserved=0> >> >> Send large files to us via: >> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=yxPhnc1nK%2FhOrvBuUeSCrAzmdXOmkIm4fhoOvPPq9TM%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=yxPhnc1nK%2FhOrvBuUeSCrAzmdXOmkIm4fhoOvPPq9TM%3D&reserved=0> >> >> _______________________________________________ >> Sprinklerforum mailing list >> Sprinklerforum@lists.firesprinkler.org >> >> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OnD3Bju1l5znmiAVUfQzJDe4Mwh8whg8i75B2X0AiSM%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OnD3Bju1l5znmiAVUfQzJDe4Mwh8whg8i75B2X0AiSM%3D&reserved=0> >> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OnD3Bju1l5znmiAVUfQzJDe4Mwh8whg8i75B2X0AiSM%3D&reserved=0<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OnD3Bju1l5znmiAVUfQzJDe4Mwh8whg8i75B2X0AiSM%3D&reserved=0> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7C3a1b7c5074db4a7b1c7a08d8d5354441%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637493772041998095%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OnD3Bju1l5znmiAVUfQzJDe4Mwh8whg8i75B2X0AiSM%3D&reserved=0 _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
