One of the problem is that insulation installers are not consistent. Some may stop at the joists, others may just let it flow. It is almost impossible to properly install sprinks until after the insulation is in, but then it is difficult to hang the pipe.
On one job I was working on, the insulation contractor buried a line of attic sprinklers. > > On Sep 29, 2023 at 6:46 AM, <Brian Harris > (mailto:[email protected])> wrote: > > > > > > Craig- > > > > No, this is spray on insulation in an attic. > > > > > > > > Brian Harris, CET > > > > BVS Systems Inc. > > > > bvssytemsinc.com (http://bvssystemsinc.com/) > > > > > > > > > > > > > From: Craig Hanson <[email protected]> > Sent: Thursday, September 28, 2023 6:07 PM > To: Discussion list on issues relating to automatic fire sprinklers > <[email protected]> > Subject: [Sprinklerforum] Re: Spray Foam Insulation > > > > > > > > > > Are they referring to the exposed barrel length for dry heads in freezers? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Craig D. Hanson, CFPS > > > > > > > > Fire Division Manager > > > > > > > > West Coast Code Consultants, Inc. (WC³) > > > > > > > > Meridian Satellite Office > > > > > > > > C: 253.225.9977 | E: [email protected] (mailto:[email protected]) | > www.WC-3.com (https://www.wc-3.com/) > > > > > > > > Teaming With Your Community to Make a Difference > > > > > > > > > > > > > > > > > > > > > > > On Thu, Sep 28, 2023 at 3:56 PM Brian Harris <[email protected] > (mailto:[email protected])> wrote: > > > > > > > > > > > Ken- > > > > > > > > > > Thanks and will do. > > > > > > > > > > Sent from my iPhone > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Sep 28, 2023, at 5:31 PM, Ken Wagoner <[email protected] > > > (mailto:[email protected])> wrote: > > > > > > > > > > > > > > > > > > > > > > And I will be very interested to find what "code" they're referring to. > > > > > > I submit that if one is to consider the spray foam insulation as > > > unobstructed as defined by -13, then the deflector position relative to > > > the bottom level of the foam is required to be between 1" and 12" per > > > 10.2.6.1.1 ('22 edition). > > > > > > If the bottom of the insulation is to be considered as obstructed, or > > > the foam is between members which are obstructed, then the deflector must > > > be 1" to 6" below the member, but no greater than 22" down from the > > > ceiling/roof deck above, per 10.2.6.1.2 ('22 again). > > > > > > I can't wait to learn the rationale behind such a requirement. > > > > > > In short, remember my oft repeated mantra, whenever someone pops up with > > > something like this: Prove it. > > > > > > keep the forum informed, ok? > > > > > > > > > > > > > > > Ken Wagoner, SET > > > Parsley Consulting > > > 500 West Mechanic Street > > > Harrisonville, Missouri 64701-2235 > > > Phone: (760) 745-6181 > > > Visit the website > > > (https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1) > > > > > > > > > > > > > > > > > > On 9/28/2023 2:12 PM, Brian Harris wrote: > > > > > > > > > > > > > > > > > > > > > > > > > The AHJ is supposed to be providing the “code” where this came from. > > > > Should be interesting. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Brian Harris, CET > > > > > > > > > > > > > > > > BVS Systems Inc. > > > > > > > > > > > > > > > > bvssytemsinc.com (http://bvssystemsinc.com/) > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > From: Eric Rieve <[email protected]> (mailto:[email protected]) > > > > Sent: Thursday, September 28, 2023 2:54 PM > > > > To: Discussion list on issues relating to automatic fire sprinklers > > > > <[email protected]> > > > > (mailto:[email protected]) > > > > Subject: [Sprinklerforum] Re: Spray Foam Insulation > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Funny enough I was told the same a few years ago. His reasoning was > > > > that the uneven nature of the foam application could cause obstructions > > > > that weren’t readily apparent so extra clearance was warranted. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > From: Brian Harris <[email protected] > > > > (mailto:[email protected])> > > > > Sent: Thursday, September 28, 2023 2:48 PM > > > > To: [email protected] > > > > (mailto:[email protected]) > > > > Subject: [Sprinklerforum] Spray Foam Insulation > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Anybody ever have an AHJ say you need 4” clearance from the bottom of > > > > spray insulation to the deflector? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Brian Harris, CET > > > > > > > > > > > > > > > > BVS Systems Inc. > > > > > > > > > > > > > > > > bvssystemsinc.com > > > > (https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fbvssystemsinc.com%2f&c=E,1,wo5wYVtpGosaBntgPq_5rudqm8ADj3XpDv10H3ACDcs2pNvWgifdhkbEDh5cNdO54rGdJmuywOvI-uxu4wi0CjpghGrXuaIGLLlPSAjRPh_ujRUBa-eEnA,,&typo=1) > > > > > > > > > > > > > > > > Phone: 704.896.9989 > > > > > > > > > > > > > > > > Fax: 704.896.1935 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _________________________________________________________ > > > > > > > > SprinklerForum mailing list: > > > > > > > > > > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > > > > > > > > > > > To unsubscribe send an email to > > > > [email protected] > > > > (mailto:[email protected]) > > > > > > > > > > > > > > > > > > _________________________________________________________ > > > SprinklerForum mailing list: > > > > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > > To unsubscribe send an email to > > > [email protected] > > > (mailto:[email protected]) > > > > > > > > > > > > > > > > > > > > > _________________________________________________________ > > SprinklerForum mailing list: > > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > To unsubscribe send an email to > > [email protected] > > (mailto:[email protected]) > > > > > > > _________________________________________________________ SprinklerForum > mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to [email protected] >
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