My first thought when I read this was "What?" Then I grabbed the calculator. Sure enough, at 196 sqft spacing, requiring 19.6 gpm....
Using a 5.6 k-factor sprinkler the starting pressure is 12.25 psi, roughly, giving you 19.6 gpm Using an 8.0 k-factor sprinkler the starting pressure has to be at least 7.0 psi, giving you 21.16 gpm. Slightly higher flow, with about 1.5 psi reduced starting pressure. Wonder how big an RA you have to get to before the increased flow starts to take it's toll. Food for thought, Thom, and thanks! -- PARSLEY CONSULTING Ken Wagoner, SET 760.745.6181 voice 760.745.0537 fax [email protected] <mailto:[email protected]> e-mail www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website Thom McMahon wrote: > Actually K8.0 could be a very good choice for LH if you use 14x14 spacing. > > Thom McMahon, SET > Firetech, Inc. > 2560 Copper Ridge Dr > P.O. Box 882136 > Steamboat Springs, CO 80488 > Tel: 970-879-7952 > Fax: 970-879-7926 > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Russell > Sent: Wednesday, May 12, 2010 10:19 AM > To: [email protected] > Subject: RE: Pipe Size > > Well, what I'm getting at is that the more water that is flowing from the > remote area the less residual pressure you have available at the source. The > less residual, the less the safety factor. The same as trying to use > sprinklers with a k-factor of 8.0 in a light hazard design. It'll kill your > calc's. > > Russell > > _______________________________________________ > 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) > > _______________________________________________ > 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) > > _______________________________________________ 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)
