Lets say you're a sprinkler scientist and strictly apply NFPA. If it is not wood joist or wood truss do we have to use the spacing requirements of within 12" of the peak and more than 6 ft. from the eave etc... ? Regardless of the sprinkler type.
Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Wednesday, April 11, 2007 9:19 AM To: [email protected] Subject: Re: Unoccupied Attics pitch greater than 4 in12 For the purposed of Attic protection I would use listed Attic Specific application sprinklers. Wood trusses fail fast at the metal plates, and composite wood joist fail in the thin flange between the stringers. In this application, I don't think NFPA 13 cares what type of joist are used, only if they are combustible or not. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Fletcher, Ron" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, April 11, 2007 8:40 AM Subject: Unoccupied Attics pitch greater than 4 in12 8.6.2.2.1(a) 02 references "combustible wood joist or wood truss construction". Most of the spacing requirements (i.e. 8.6.4.1.4.2 & 8.6.4.1.4.3) for slopes greater than 4 in 12 are prefaced by "combustible concealed spaces of wood joist or wood truss construction". What if the construction is 18" composite wood joists on 2 ft centers? NFPA is pretty clear that composite wood joists are not the same as wood joists. Ron Fletcher Aero Automatic Phoenix, AZ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
