My take on that is it has to do with heat flow. Top cords / joists / etc. with a depth greater than 4” interfere too much with heat flow. No obstruction to water distribution, but a delay in activation.
Ed K Bamford Fire From: Sprinklerforum [mailto:[email protected]] On Behalf Of Kyle.Montgomery Sent: Monday, April 01, 2019 1:01 PM To: [email protected] Subject: RE: [EXTERNAL] RE: ESFR and Baffles So, here’s a related question I’ve been pondering: What if you have Wood Joist Construction (technically combustible obstructed, right?) but the depth of the wood members is relatively short (like 2x6s or something)… are you prohibited from using ESFR heads? It seems strange that you wouldn’t be able to use them in that case, since you would be able to maintain the appropriate deflector distance (up to 18” from deck is allowable for some ESFRs) and there would be no actual obstruction to the sprinklers. Is there something that I am missing? Kyle Montgomery Aero Automatic Sprinkler Co. 21605 N. Central Ave. Phoenix, AZ 85024 Direct: 623.580.7820 Cell: 602.763.4736 [email protected] <mailto:[email protected]> From: Sprinklerforum [mailto:[email protected]] On Behalf Of Travis Mack, SET, CFPS, CWBSP, RME-G Sent: Monday, April 1, 2019 10:14 AM To: [email protected] <mailto:[email protected]> Subject: [EXTERNAL] RE: ESFR and Baffles Yes. There are things you can do to change the building to make it ESFR compatible. But as it was described, you have a building that is not compliant with ESFR. Too many people jump to ESFR as the panacea of storage. <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.mfpdesign.com_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=qPqzkIcYhJ2zI_RVIutELOG-iYAapNlejxRnE0NPE0M&e=> Travis Mack, CFPS, CWBSP, RME-G, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 <mailto:[email protected]> [email protected] www.mfpdesign.com <http://www.mfpdesign.com> Send large files to us via: https://www.hightail.com/u/MFPDesign LinkedIn: https://www.linkedin.com/in/travismack “The bitterness of poor quality remains long after the sweetness of low price is forgotten.” From: Sprinklerforum <[email protected] <mailto:[email protected]> > On Behalf Of Steve Leyton Sent: Monday, April 1, 2019 10:11 AM To: [email protected] <mailto:[email protected]> Subject: RE: ESFR and Baffles Corollary to The Perfect Answer: I would say that someone needs to install a suspended ceiling to create a conforming application for ESFR. Steve Leyton Almost Perfect From: Sprinklerforum [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Monday, April 01, 2019 9:51 AM To: [email protected] <mailto:[email protected]> Subject: Re: ESFR and Baffles Perfect answer Roland Roland Huggins, PE Senior Vice President, Engineering & Technical Services American Fire Sprinkler Association p: 214-349-5965 ext121 w: <https://urldefense.proofpoint.com/v2/url?u=http-3A__firesprinkler.org&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=Vy-IyFyG1i1tqIk694e9FNZyITZgo96XXvsp9L-xDbE&e=> firesprinkler.org <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.facebook.com_firesprinkler.org_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=i2frm7_BmtNa39q2fOGfAK84y6YSKMDhnAiGYrG7hj0&e=> <https://urldefense.proofpoint.com/v2/url?u=https-3A__twitter.com_afsa_status_1039528345367732224&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=qudp3qi8nTBMzUTNEfGjN3rYU8TEoyGg6qG11Kj3PG8&e=> <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=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=fkwQKY7bLXMxE2Rz55JW0_e6_uKimObeFz_yX0HV47M&e=> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.instagram.com_firesprinklerorg_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=k2MBYdoRIHA4uvwl6mWR_cQDUOKyc042SymYX5vDH0c&s=iJzwLIeJSvq69qRqyC7TcbWp3IlEWvJnXtOh4eD-GMI&e=> On Apr 1, 2019, at 8:56 AM, Shawn Foor <[email protected] <mailto:[email protected]> > wrote: I would say you are in a building that you can’t use ESFR heads On Mon, Apr 1, 2019 at 10:53 Cliff Whitfield <[email protected] <mailto:[email protected]> > wrote: What do you do when you have ESFR in a structure with W-Beams that are less than 8’ apart but too deep to get the proper deflector distance beneath them? Cliff Whitfield, SET President
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