It is the purlins making the depth of the ceiling jet exceed 12" average, 'everywhere', so in terms of putting the head in the ceiling jet, the main frames can be ignored, in terms of putting the water on the floor, they cannot be.
-----Original Message----- From: Matthew J. Willis [mailto:[email protected]] Sent: Tuesday, October 26, 2010 12:21 PM To: [email protected] Subject: RE: Maximum Deflector Distance below Z Purlins Good question. It is not defined in Chapter 3; however, there are several examples of "bay" throughout the standard. In particular note the figures showing typical calc areas. "Bay" as I understand it, is the area between the Frames that the purlin rest on. R/ Matt Matthew J. Willis, CET Automatic Fire Sprinklers Norred Fire Systems L.L.C. 318-387-1134 Voice 318-816-1087 Mobile 318-387-1163 Facsimile [email protected] > >-----Original Message----- > >From: [email protected] [mailto:sprinklerforum- > >[email protected]] On Behalf Of Brad Casterline > >Sent: Tuesday, October 26, 2010 11:54 AM > >To: [email protected] > >Subject: RE: Maximum Deflector Distance below Z Purlins > > > >It is something to think about I guess. But since the purlins are the > >structural members impeding the heat flow, where does BAY come in? > > > >-----Original Message----- > >From: Matthew J. Willis [mailto:[email protected]] > >Sent: Tuesday, October 26, 2010 8:58 AM > >To: [email protected] > >Subject: RE: Maximum Deflector Distance below Z Purlins > > > >I always thought subsection (3) superseded when spaced in the bays.? > > > > R/ > >Matt > > > > > > > >Matthew J. Willis, CET > >Automatic Fire Sprinklers > >Norred Fire Systems L.L.C. > >318-387-1134 Voice > >318-816-1087 Mobile > >318-387-1163 Facsimile > >[email protected] > > > >> >-----Original Message----- > >> >From: [email protected] [mailto:sprinklerforum- > >> >[email protected]] On Behalf Of Brad Casterline > >> >Sent: Monday, October 25, 2010 2:00 PM > >> >To: [email protected] > >> >Subject: RE: Maximum Deflector Distance below Z Purlins > >> > > >> >If the purlin spacing does not exceed 7'-6", I think so. > >> > > >> >-----Original Message----- > >> >From: Bobby Gillett [mailto:[email protected]] > >> >Sent: Monday, October 25, 2010 1:53 PM > >> >To: [email protected] > >> >Subject: RE: Maximum Deflector Distance below Z Purlins > >> > > >> >If my understanding is correct, this is considered obstructed > >> >construction > >> >now so it would be per 8.6.4.1.2 and if the scenario is typical to > >most > >> >purlin buildings you should be able to utilize 8.6.4.1.2 (1) 1"-6". > >What > >> >say > >> >everyone else? > >> > > >> > > >> > > >> >Bobby Gillett > >> > > >> >Sr. Project Manager > >> > > >> >Key Fire Protection, Inc. > >> > > >> >(731) 424-0130 office (731) 424-9285 fax > >> > > >> >(731) 267-4853 cell > >> > > >> > <mailto:[email protected]> > >> >[email protected] > >> > > >> > > >> > > >> > > >> > > >> > _____ > >> > > >> >From: [email protected] > >> >[mailto:[email protected]] On Behalf Of Mike > >> >Hairfield > >> >Sent: Monday, October 25, 2010 1:44 PM > >> >To: AFSA SprinklerFORUM > >> >Subject: Maximum Deflector Distance below Z Purlins > >> > > >> > > >> > > >> > > >> > > >> >OK Metal building with 9 1/2" Z-Purlins, what is maximum distance that > >> >the > >> >deflector can be below the > >> >bottom of the Purlin. > >> > > >> >Mike > >> >_______________________________________________ > >> >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:Sprinklerforum- > >[email protected] > >> >(Put the word unsubscribe in the subject field) > >> > > >> > _____ > >> > > >> >No virus found in this message. > >> >Checked by AVG - www.avg.com > >> >Version: 10.0.1152 / Virus Database: 422/3218 - Release Date: 10/25/10 > >> > > >> >_______________________________________________ > >> >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:Sprinklerforum- > >[email protected] > >> >(Put the word unsubscribe in the subject field) > >> > > >> >_______________________________________________ > >> >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:Sprinklerforum- > >[email protected] > >> >(Put the word unsubscribe in the subject field) > >> >No virus found in this incoming message. > >> >Checked by AVG - www.avg.com > >> >Version: 9.0.862 / Virus Database: 271.1.1/3204 - Release Date: > >10/25/10 > >> >01:34:00 > > > >_______________________________________________ > >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) > > > >_______________________________________________ > >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) > >No virus found in this incoming message. > >Checked by AVG - www.avg.com > >Version: 9.0.864 / Virus Database: 271.1.1/3204 - Release Date: 10/26/10 > >01:34:00 _______________________________________________ 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) _______________________________________________ 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)
