I would be concerned with NOT protecting the area under the 2' wide plywood , can't think of any exception that would allow you to not have protection , and because of the 3' depth you will have to have heads under the enclose. My 2 cents worth.
Richard Carr, SET Design Manager Associated Sprinkler Co., LLC 336.373.3901 ext 217 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Thursday, May 27, 2010 2:47 PM To: [email protected] Subject: Beam obstructions I have a crawlspace that has to be sprinklered. I need to get exact measurements, but for now I'm guessing it is about 4 feet high. The plywood ceiling of the crawlspace tight to the bottom of main floor joists is smooth & flat. The problem is the crawlspace has "utilidors", enclosed heated spaces for running ducts, piping etc. Generally, these utilidors, encased with plywood, are 2 feet wide (horizontal) and about 3 feet high (vertical)and run everywhere in the crawlspace, with no set pattern. Think of the utilidors as wood beams coming down from the ceiling. I will have sprinklers inside the udilidors if they are not filled up with ducts or piping. My question is there is about a foot of space below the utilidors. My opinion is it should be okay if I space the heads on both sides of the obstruction complying with 13(2007) section 8.6.5.1.2 (2) and not provide additional heads below the obstruction. Any dissenting thoughts? Tony _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) This email and any attached files are confidential and intended solely for the intended recipient(s). If you are not the named recipient you should not read, distribute, copy or alter this email. Any views or opinions expressed in this email are those of the author and do not represent those of the company. Warning: Although precautions have been taken to make sure no viruses are present in this email, the company cannot accept responsibility for any loss or damage that arise from the use of this email or attachments. _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
