So, are we saying that he needs sprinklers above the ceilings, but that it is OK to use standard spray in spaces less than 36” deep?
Maybe I’m misunderstanding, but isn’t one of the main reasons for attic (combustible concealed space) heads because the standard spray pattern can’t develop properly in less than 36” of vertical height? So how does the construction type impact that? I don’t have the have the book with me right now, so I may be missing something obvious in the code. -Kyle M From: Sprinklerforum [mailto:[email protected]] On Behalf Of Joe Burtell Sent: Wednesday, December 26, 2018 10:42 AM To: [email protected] Subject: [EXTERNAL] Re: Concealed spaces in mill construction I would agree. That rule did also not apply to composite wood joists in previous editions, so your logic is on track. Some of the listed concealed space sprinkles are listed for other construction types but it's another to pay for the special sprinklers. Best regards, Joe Burtell, SET, CFPS *PLEASE NOTE NEW PHONE NUMBER* [Burtell Fire_Small] Phone | Fax | Mobile| Text 406-204-4653<tel:++1-406-204-4653> 116 N. 11th Street | Billings, MT 59101 Email: [email protected]<mailto:[email protected]> Web Site: http://www.burtellfire.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.burtellfire.com_&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=HmyGLj-HcU9kUsHSt_yGYdvwrUENUvNkbMXsbffNq6U&s=6XI-JqptCjmEJrDUsoUOvwo238Ih_amulk3U2KImVjY&e=> “The bitterness of poor quality remains long after the sweetness of low price is forgotten.” NOTICE: The information contained in this e-mail transmission is intended only for use of the individual or entity named above. This e-mail transmission, and any documents, files, previous e-mail transmissions or other information attached to it, may contain confidential information that is legally privileged. If you are not the intended recipient of this e-mail transmission, or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, dissemination, distribution, copying or other use of this transmission or any of the information contained in or attached to this e-mail is strictly prohibited. If you have received this e-mail transmission in error, please immediately notify us by return e-mail transmission and destroy the original e-mail transmission as well as its attachments without reading or saving it in any manner. Thank you. On Mon, Dec 24, 2018 at 1:08 PM Fpdcdesign <[email protected]<mailto:[email protected]>> wrote: I am working on a system in early 1900s building with typical mill construction with large wood beams and a wood deck. In some areas they are dropping ceilings below. The ceiling heights have been changing and may now create a space less than 36”. I called for standard upright sprinklers and the engineer is asking for concealed space sprinklers. The text of NFPA 13 states that special sprinklers are required for spaces under wood joist or wood truss construction, which this is neither. I just want to confirm that I am on solid ground before the argument starts later this week. Everyone have a happy holiday. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-553-3553 (fax) 860-608-4559 (cell) _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwMFaQ&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=HmyGLj-HcU9kUsHSt_yGYdvwrUENUvNkbMXsbffNq6U&s=SRvIPetijvrzkfpA4XYC3NXm6A0gEgneWmqzckdTkFA&e=>
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