I don't have the section in front of me, but I believe you would calc 25.6 gpm in that case. Area of head or listing, whichever is greater. In small room, you avg head spacing. Travis Mack, SET MFP Design, LLC www.mfpdesign.com
Sent on the Sprint® Now Network from my BlackBerry® -----Original Message----- From: Carrol Glimstad <[email protected]> Sender: [email protected] Date: Fri, 29 Oct 2010 16:24:01 To: <[email protected]> Reply-To: [email protected] Subject: Residential "Room Design Method"? I'm designing a residential project using res. heads (LFII) and designing to full NFPA 13. When I calc my four heads using the "design area", I am wondering if I can use the room design method to determine my sprinkler demand? For instance, I have a room that measures 16' X 16', (256 sq. ft.) but the head is actually located 10 feet off of the 2 adjacent far walls. If using the flow rates from the chart I know that I need to flow 20 gpm from that head based on my maximum 20' x 20' spacing. But If I'm using the .10 over the "design area" can I just use the demand of 25.6 gpm for that head (16' x 16' sq. ft.) versus the 40 gpm based on 20' x 20'? I understand then I would then base my system requirements on the more demanding of the two methods. I can flow all four heads at a 20 gpm no problem, but the 40 gpm from just one head.....ouch! I haven't done residential in a looooong time, so thought I'd check for the heck of it and I'm pretty sure I'll find instead that I'm full of it! Thanks in advance! Carrol Glimstad _______________________________________________ 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)
