Thom, No attic sprinklers since the pitch is 3/12. Thanks, Bob
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Thursday, June 21, 2007 11:17 AM To: [email protected] Subject: Re: Wood Truss Construction Bob: If your using the Attic Specific application sprinklers from TYCO 16" to 22" down is normal, and your 11" top cord is not as important as the distance between trusses. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Bob Knight" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, June 21, 2007 10:59 AM Subject: Wood Truss Construction >I have a situation in an attic space that is using a standard wood truss w/ > 2x6 top cords, but in addition to this there is another 2x6 sistered to > the > top cord so that the top cord is now 11" deep. Per 13, truss construction > is considered unobstructed, but I'm having a difficult time considering > this > unobstructed. This is a dry system. If this is unobstructed > construction, > then the deflector is to be 1" to 12" down which leaves only 1" of play > for > sloping the branch lines. At a 1/2" per 10' there is not enough play to > provide proper slopeage. Can this be considered obstructed construction > due > to the depth of the double top cord? > > As a side question, I've never understood why a truss with 2x4 or 2x6 top > cord is considered unobstructed when a joist that is a 2x4 or 2x6 is > considered obstructed. What's the difference? > > Thank you, > > Bob Knight, CET > (208) 495-2057 > [EMAIL PROTECTED] > www.firebyknight.com > > > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: 6/19/2007 > 1:12 PM > > > _______________________________________________ > 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) No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: 6/19/2007 1:12 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: 6/19/2007 1:12 PM _______________________________________________ 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)
