Agree, it explains (3) good also Where the depth of the structural members are of such a dimension that compliance with the obstruction rules of Table 8.6.5.1.2 is not possible, sprinklers must be installed in each bay, and the requirements of 8.6.4.1.2 (3) apply. Exhibit 8.18 shows the bay in this case being deep structural members spaced 7½ or less.
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 Ben Young Sent: Tuesday, October 26, 2010 1:27 PM To: [email protected] Subject: Re: Maximum Deflector Distance below Z Purlins 8.6.4.1.2 only says you have to pick one of the following, not comply with all of them. (3) is only there as a worst case scenario, especially when you read the explanitory text in the handbook. You should only take this option if you cannot take any other, and must place sprinklers in every bay space, because you can't meet the obstruction rules in 8.6.5.1.2. If you have a handbook, exhibit 8.18 shows it perfectly. Benjamin Young On Tue, Oct 26, 2010 at 2:12 PM, Matthew J. Willis <[email protected]>wrote: > 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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > >(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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > >(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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > >(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]<to%3asprinklerforum-requ...@fire sprinkler.org> > (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 message. Checked by AVG - www.avg.com Version: 10.0.1152 / Virus Database: 424/3220 - Release Date: 10/26/10 _______________________________________________ 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:[email protected] (Put the word unsubscribe in the subject field)
