Look at exhibit 3.35 and 3.36 in the 2002 sprinkler systems handbook. The examples for beam and girder construction are shown as bays or panels. Qouting the handbook, "Beam and girder construction causes heat from a fire to accumulate within the bays or panels formed by the SUPPORTING MEMBERS." The beam and purlin construction is clearly not beam and girder construction, as the beams will not trap the heat.
Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams - FPDC Sent: October 18, 2007 2:54 PM To: [email protected] Subject: RE: purlins Without insulation, it falls under obstructed construction. That is obvious. If a building has 10" purlins with 8" of insulation filling the space between, would the purlins and insulation combination meet the definition of "impede heat flow or water distribution? IMHO, the obstruction in that case would be no worse that the obstruction created by the top chord of a bar joist, which is classic unobstructed construction. This argument would also segue into the Icynene thread earlier today. At 03:06 PM 10/18/2007, you wrote: >Based on what? It clearly does not fall into panel construction due to >the space above the beam. They are not girders. > >I am not fighting for or against, I just would like a conclusive answer. > >Is there not a manufacturer or committee member there that could >enlighten us? I would think that the tests run on these storage heads >and such would have forced a definition for the manufacturers. > >Greg > >Living Water Fire Protection, LLC >1160 McKenzie Road >Cantonment, FL 32533 >850-937-1850 >Fax: 850-937-1852 > > >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Todd >Williams >- FPDC >Sent: Thursday, October 18, 2007 1:59 PM >To: [email protected] >Subject: RE: purlins > >Up here, it usually goes beams, purlins above (on) the beams, steel >deck on the purlins. The insulation goes in between the purlins. Is the >insulation going on the metal deck roof?If the insulation comes to the >bottom of the purlin, it will create a fairly flat ceiling and I would >consider it unobstructed. If there is no insulation, I would think it >would be considered obstructed. > > >At 02:51 PM 10/18/2007, you wrote: > >No, above them. A typical warehouse. > > > >Living Water Fire Protection, LLC > >1160 McKenzie Road > >Cantonment, FL 32533 > >850-937-1850 > >Fax: 850-937-1852 > > > > > >-----Original Message----- > >From: [EMAIL PROTECTED] > >[mailto:[EMAIL PROTECTED] On Behalf Of Todd >Williams > >- FPDC > >Sent: Thursday, October 18, 2007 1:50 PM > >To: [email protected] > >Subject: Re: purlins > > > >Is there insulation between the purlins? > > > > > >At 02:45 PM 10/18/2007, you wrote: > > >Poll: > > > > > >Are typical 8" and 10" purlins spaced 4-5' apart with open space > > >above the beams where the purlins rest considered OBstructed or > > >Unobstructed construction? > > > > > > > > > > > >Living Water Fire Protection, LLC > > > > > >1160 McKenzie Road > > > > > >Cantonment, FL 32533 > > > > > >850-937-1850 > > > > > >Fax: 850-937-1852 > > > > > > > > > > > >_______________________________________________ > > >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) > > > >Todd G. Williams, PE > >Fire Protection Design/Consulting > >Stonington, Connecticut > >www.fpdc.com > >860.535.2080 > >_______________________________________________ > >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) > >Todd G. Williams, PE >Fire Protection Design/Consulting >Stonington, Connecticut >www.fpdc.com >860.535.2080 >_______________________________________________ >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) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ 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)
