I would say those things concern what happens after the head activates. Getting it to activate is different--before activation, the head is just another heat detector, it doesn't even know if it has pipe to it, let alone if it is in a bay :). I think (3) is for, say, 18" bms @ 7'-- it IS smooth ceiling in the bays then, with 12" deep ceiling jet.
-----Original Message----- From: Matthew J. Willis [mailto:[email protected]] Sent: Tuesday, October 26, 2010 1:13 PM To: [email protected] Subject: RE: Maximum Deflector Distance below Z Purlins I could agree. Everyone likes a good ceiling jet. But, there is no mention of ceiling jet, only 1"-12" when equally spaced in bays. I will offer a simple question then. Why is this statement (3) in there if 1"-6" below is the only concern? The other references to bay confirm this. Such as rotating branch lines but sprinklers must be installed in bays.... Spacing at 12.5 for EH in 25' Bays...., 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 1:07 PM > >To: [email protected] > >Subject: RE: Maximum Deflector Distance below Z Purlins > > > >And I think he should be fine as long as he is not more than 6" below the > >bottom of the purlins, but then, I am a CEILING JET FREAK. Early this > >year > >Roland straightened out a concerned poster by mentioning the MOMENTUM of > >the > >ceiling jet- I thought 'ya, what Roland said', then I fire modeled some > >set-ups, and thought 'YA, WHAT ROLAND SAID'! > > > > > >-----Original Message----- > >From: Ralphy Henderson [mailto:[email protected]] > >Sent: Tuesday, October 26, 2010 12:43 PM > >To: [email protected] > >Subject: RE: Maximum Deflector Distance below Z Purlins > > > >I agree... that would mean the 12" from deck would come into effect. I > >think > >9.2.4.2 (in the 07 ed) helps clarify what is meant by "bay" also. > >As far as Mike's original post goes, with 9 1/2" z-purlins, he should be > >fine as long as he's not more than 2 1/2" below the bottom of the > >purlins. > > > >--- On Tue, 10/26/10, Matthew J. Willis <[email protected]> wrote: > > > >From: Matthew J. Willis <[email protected]> > >Subject: RE: Maximum Deflector Distance below Z Purlins > >To: [email protected] > >Date: Tuesday, October 26, 2010, 5:20 PM > > > >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: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: 9.0.864 / 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) > > > >_______________________________________________ > >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)
