The fire won't know it should stay out of the area having different sprinklers. I think the proper thing is to calculate the entire 3000 sf. If possible use QR throughout. or at least select RES heads with similar K's of QR heads. I think the worst situation I've come across is in attics, mixing standard heads and attic heads.
Tony ----- Original Message ----- From: Roland Huggins <[EMAIL PROTECTED]> Date: Thursday, May 29, 2008 10:20 am Subject: Re: 3000 sf design area To: SprinklerFORUM <[email protected]> > This is a common problem when mixing types of heads. The same > problem > arises when you have a small lobby less than 900 sf with QR > (room > design is out) and the rest is residential (including the > corridors > that open to the lobby). What do you do? The > standard does not > address it. The norm is to use as much as you have for the > one type > of sprinkler. Talk with the AHJ and pray for rain. > > Roland > > On May 29, 2008, at 8:50 AM, Ed Kramer wrote: > > > I've got a NFPFA 13 ('02) project that requires a 3,000 sf > design > > area due > > to nonsprinklered combustible concealed spaces (TJI construction). > > > > > > The upper floor consist of dwelling units with > residential > > sprinklers and a > > central common area with QR sprinklers. > > > > The total area protected by the QR sprinklers is less than > 3,000 sf > > (approx > > 2700 sf) > > > > > > > > Do I calc a total of 2700 sf, or do I calc the 2700 sf plus > 300 sf of > > residential sprinklers? > > > > > > > > Ed Kramer > > > > Littleton, CO > > > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email to:Sprinklerforum- > [EMAIL PROTECTED]> (Put the word unsubscribe in the > subject field) > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:Sprinklerforum- > [EMAIL PROTECTED](Put the word unsubscribe in the > subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
