So we can't consider a ceiling a collection of interconnected 15'x 15' heat collectors?
At 03:13 PM 5/20/2010, you wrote: >That reference does NOT support the existence of functional heat >collectors - even if you presume such a thing (I prefer to use assume >since we know what that means). It's to stop folks from sticking >small items over the sprinkler then claiming they provide some value. >As the Annex points out, such items more often than not slow down >activation times. > >There can be a rare reason to place small horizontal items above the >sprinkler. At the DOE plant we used 1 sq ft of metal over some of our >sprinklers. It was on our cooling towers over the motors and it >wasn't a "heat collector" but a crap deflector from the birds. Other >than the in-rack sprinkler assembly, I can't think of another good >reason. > >Roland > >On May 19, 2010, at 2:36 PM, Chris Cahill wrote: > > > Who knows maybe it's not a change and the AHJ accepted as a heat > > collector. > > BTW I've been corrected heat collectors do exist. NFPA 13 '10 says > > so. So > > next time someone says there is no such thing as a heat collector > > refer them > > to 13 '10-8.5.4.1.4 and the only limit is when used as a means to > > assist the > > activation of a sprinkler. So it presumes there are other legal uses > > of heat > > collectors. But I digress. > > > > Chris Cahill, P.E. > >_______________________________________________ >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) 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)
