I always did the area over both. I think we just discussed this not too long ago.
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 Todd Williams > >Sent: Friday, October 08, 2010 2:45 PM > >To: [email protected] > >Subject: RE: Full height walls in exposed room - segue > > > >It isn't be the classic above and below situation because they are > >not two separate areas. The space below is open to above, more like a > >cloud. > > > > > > > >At 03:36 PM 10/8/2010, you wrote: > >>If you leave the roof system intact, your heads below the ceiling will > >be > >>the classic "Above & Below" config. And you calc. them separately. I.E. > >>900Sf LH/OH QR below, and appropriate area density above. > >> > >>-----Original Message----- > >>From: [email protected] > >>[mailto:[email protected]] On Behalf Of Todd > >Williams > >>Sent: Friday, October 08, 2010 12:15 PM > >>To: [email protected] > >>Subject: RE: Full height walls in exposed room - segue > >> > >>Since we are talking about this sort of thing, I will hijack this > >>thread for something similar. > >> > >>I am about to start on a project that has a somewhat similar > >>situation that I would appreciate some feedback on. This is an > >>existing facility and the company manufactures medical devices. There > >>is an existing sprinkler system at the ceiling level, approximately > >>25 ft off the floor. The majority of the space has ceilings at around > >>8 ft, some hard tile, some melt-away. The sprinkler system > >>modifications (heads below ceilings, etc) were done in house and not > >>correctly. My charge is to come up with a design that meets Code. All > >>of the melt-away tiles are to be replaced and rated tiles to be > >>installed in their place. Consequently, sprinklers will be needed > >>below the ceilings. The problem is that one large area has a ceiling > >>which partly covers the space and the rest is open to the roof. There > >>is no wall between the low ceiling and the deck, so it is a wide open > >>space. My question is on the hydraulics; am I going to have to > >>include sprinklers both at the roof and below the ceiling in my > >>remote area? I think I am since it does somewhat mirror a cloud > >>situation, but would appreciate some feed back. > >> > >> > >> > >> > >>Todd G. Williams, PE > >>Fire Protection Design/Consulting > >>Stonington, CT > >>860.535.2080 > >>www.fpdc.com > >> > >>_______________________________________________ > >>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) > > > >Todd G. Williams, PE > >Fire Protection Design/Consulting > >Stonington, CT > >860.535.2080 > >www.fpdc.com > > > >_______________________________________________ > >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: 9.0.862 / Virus Database: 271.1.1/3180 - Release Date: 10/07/10 > >13:34:00 _______________________________________________ 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)
