OK the curiosity was killing me so I spent my lunch time putting (5) 16" beams in the 8' ceiling, 24" plenum, panel-panel cross (fire in the middle), fast growth fire, 9.375" gaps scenario. I'll hit calc on my way out the door and right around Monday morning it should be done :) I took a couple 'snapshots' of the set-up if any one is interested.
-----Original Message----- From: Brad Casterline [mailto:[email protected]] Sent: Friday, August 09, 2013 9:09 AM To: [email protected] Subject: RE: Ceiling Cloud Study FYI Good point and idea Allan. Since one of the questions is "Does the hot layer or the cloud ceiling jet drive the sprinkler activation", it makes sense to see the effect of, say, 16" deep beams at 6-8 feet on center in a 24" deep plenum space... etc. Nothing beats full scale tests, but at this point it would be a fairly simple matter to add a hundred or two structural scenarios to the existing model to get some additional insight, if nobody wants to put the steel back up, build fires, etc :) -----Original Message----- From: AKS-Gmail-IMAP [mailto:[email protected]] Sent: Thursday, August 08, 2013 9:14 PM To: [email protected] Subject: Re: Ceiling Cloud Study FYI Maybe I missed this, but the study, testing and report surprisingly does not acknowledge or mention the fact that many if not most cloud ceiling conditions are where the the ceiling above the clouds is the structural deck supported by beams and girders. That structure can divide the above ceiling surface into compartments that can either hold or channel away combustion products from the gaps. The structural members above cloud ceilings are more likely to be deeper than normal because clouds are often architectural methods used to break up the ceiling expanse resulting from wide structural bays where the architecture wants to eliminate columns. A cloud ceiling in a small room, i.e. where the structure above might be less involved, may not be architecturally appealing and may be there as a primary result of a not so common HVAC concept. The test apparatus was in fact one reused from testing the effects of structural steel. They can put that steel back up and run the cloud tests again under more likely conditions to see how far the no steel conclusions can carry. Allan Seidel St. Louis, MO On Aug 8, 2013, at 9:18 AM, Brad Casterline <[email protected]> wrote: > http://www.nfpa.org/research/fire-protection-research-foundation/reports-and > -proceedings/suppression/other-sprinkler-protection/sprinkler-protection-for > -cloud-ceilings > > > > Brad Casterline, NICET IV > > Fire Protection Division > > > > FSC, Inc. > > P: 913-722-3473 > > [email protected] > > www.fsc-inc.com > > > > Engineering Solutions for the Built Environment > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
