In the original post, I believe the area was classified as ordinary hazard, not necessarily storage. So does that change things?
I agree with the previous posts that it seems odd to say we can call the area under the door light hazard when using a standard spray head but can’t do so when using and extended coverage head. Any thoughts on that? Also, has there been any actual testing done for this scenario? Aside from the obstruction issue, I’m kind of curious to see what the impact is from having a fire adjacent to a large open door. Is it helpful because it release heat/smoke from the building? Is it hurtful because it feeds fresh air (oxygen) to the fire? If it’s windy, would that have a large impact on fire spread? -Kyle M From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Roland Huggins via Sprinklerforum Sent: Tuesday, September 3, 2019 8:52 AM To: sprinklerforum@lists.firesprinkler.org Cc: Roland Huggins <rhugg...@firesprinkler.org> Subject: Re: [EXTERNAL] Ex cov under OH Door I concur with your approach. I believe we say under doors in storage is a OH RH [https://www.dropbox.com/s/g4h8r7hdtsr6154/AFSA_L.png?raw=1] Roland Huggins, PE Senior Vice President, Engineering & Technical Services American Fire Sprinkler Association p: 214-349-5965 ext121 w: firesprinkler.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__firesprinkler.org&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=rQWaqxdT_FiVerKVXuipuaN27JcsatXexZDohwn4kFg&e=> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/facebook_sig.png]<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.facebook.com_firesprinkler.org_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=7vWJcIV7VOElHvZQVo--Qd6Du9y6kZTiKMa3V0eLLFg&e=> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/twitter_sig.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__twitter.com_afsa_status_1039528345367732224&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=v_DnJR_XW5D6nuO7IGJXt-q592hr4yvzpmACdNhxgIQ&e=> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/linkedin_sig.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.linkedin.com_company_american-2Dfire-2Dsprinkler-2Dassociation-2Dafsa-2D_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=vapiG_1_cSFnjGmUtsaHOMGwP4I9S88Fc4rxy4EvQ7k&e=> [http://cdn2.hubspot.net/hubfs/184235/dev_images/signature_app/instagram_sig.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_firesprinklerorg_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=sSdLgSrWz57cMUN6e58wzs3r3iktZMvq7taNyuxKkTo&e=> Inspect. Test. Maintain. AFSA’s ITM Inspector Development Program provides OJT guidance, web and in-person instruction, hands-on learning, and more. Enroll now for October launch. Be NICET I ready by this Spring, with the goal of NICET II in just 20 months. Learn more.<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.firesprinkler.org_itm&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=dZD4xsterQU9_hWT2n4KM4WEZNVrzeD_6zBhscZw_Wc&s=yzt_62CGMmzJ9ah_lkEbdnY56Vonca2_7JrMLVv5JvE&e=> On Aug 23, 2019, at 3:31 PM, Travis Mack via Sprinklerforum <sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>> wrote: 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
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