Chris, If it's 19.5 off the walls at 0.01 (380.25 sqft) why would you calc to 19x19 at 0.01 (361 sqft)?
On Fri, Oct 29, 2010 at 5:03 PM, Chris Cahill <[email protected]> wrote: > I think the question was more on spacing than number of heads. IMO because > she is 10' off the wall it's a 20x20 calc either way. If she was 9.5 off two > walls then it would be a 20x20 off the cut sheets and 19x19 at 0.1 using SxL. > > Chris > -----Original Message----- > From: "Travis Mack, SET" <[email protected]> > Sender: [email protected] > Date: Fri, 29 Oct 2010 23:52:56 > To: <[email protected]> > Reply-To: [email protected], [email protected] > Subject: Re: Residential "Room Design Method"? > > Yeah. It is a 4 head minimum calc. Even if each room has only 1 sprinkler, > you still must calc 4 heads. > Travis Mack, SET > MFP Design, LLC > www.mfpdesign.com > > Sent on the Sprint® Now Network from my BlackBerry® > > -----Original Message----- > From: "Jamie.seidl" <[email protected]> > Sender: [email protected] > Date: Fri, 29 Oct 2010 19:49:55 > To: [email protected]<[email protected]> > Reply-To: [email protected] > Subject: Re: Residential "Room Design Method"? > > See, I really should read the whole email prior to posting. If your full 13, > you will still need to be at .10 gpm/sqft per spacing, and if your doing room > design, you will still need to pick up 2 sprinklers in the communicating > spaces... Not many residential occupancies have rated doors... > > Jamie > Sent from my iPhone > > On Oct 29, 2010, at 7:24 PM, Carrol Glimstad <[email protected]> > wrote: > >> 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) > _______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ 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)
