K8 heads could actually penalize his design in the OH-I area couldn't they? 7 psi minimum end head dictates 14ish GPM out of a k5.6, even at 130 sq ft going to a K8 head would actually cause him to discharge more GPM than the density requires (at least using my not particularly well calibrated internal calculator), and GPM as we know is what creates friction loss. In the LH area if he spaced the heads out near the limits a K8 will save him some pressure, but given his water supply that doesn't look to be his biggest concern. The big question is how long the 1 1/4" run is in my mind, if it's short enough you can jump up at the connection, if it isn't then you don't have a lot of options unless maybe you can squeeze out some area reductions (QR/Ceiling height reductions if they haven't been considered) with careful code reading and head selection. Mike Morey, SET Sprinkler Designer BMW Constructors, Inc. O: 317.651.0596 | C: 317.439.2695 www.bmwc.com <https://owa.bmwc.com/exchweb/bin/redir.asp?URL=http://www.bmwc.com>
________________________________ From: [email protected] on behalf of Ron Greenman Sent: Mon 4/4/2011 12:49 PM To: [email protected] Subject: Re: Design solution needed What K heads are you using. Bigger holes help more than bigger pipes in good pressure/bad water situations. If you're using K5.6 see the huge gain K8.0 will give you. And your moister recent post asked most of the questions I asked just as that left and yours arrived. _______________________________________________ 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)
