thanks that is what i was wondering. i was still going to calculate them at a 18X18 coverage and demand. which hydraulically would be covering 1620 sqft.
pretty confusing even when they try to clarify it. lol From: Sprinklerforum [mailto:[email protected]] On Behalf Of Travis Mack, SET Sent: June-27-16 9:43 PM To: [email protected] Subject: Re: EXTENDED COVERAGE SPRINKLERS That is using a basis of 16x16 and assuming the sprinklers are maxed out in a perfect world. I believe the handbook is trying to clarify that even though you could go to 900 sq ft, you still have to cover a minimum of 5 sprinklers. So, in theory, if you have 20x20 spacing, even though you could do 900 sq ft for a 10' ceiling, you would have a potential 2000 sq ft design area. It is not saying you have to do an area of 5x sprinkler coverage. If you sprinklers cover 18x12, you are required to calculate them at 18x18 listings. If you get the QR reduction to 900 sq ft, you are still going to have to calc a minimum of 5 sprinklers. Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:[email protected] http://www.mfpdesign.com https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: https://www.hightail.com/u/MFPDesign LinkedIn: https://www.linkedin.com/in/travismack On 6/27/2016 6:38 PM, Trillium Fire Sprinkler Design Inc. wrote: its say on page 598n 2013 handbook. ``if the reduction of area is applicable such as that the minimum area density area was 900 sqft, then the 1280 sqft area would be required.`` according to 11.2.3.2.2.3 From: Sprinklerforum [mailto:[email protected]] On Behalf Of Steve Leyton Sent: June-27-16 9:30 PM To: [email protected] Subject: RE: EXTENDED COVERAGE SPRINKLERS If the sprinklers are 18' apart or 9' off of walls, then 5 x 324 SF would be correct. Steve -------- Original message -------- From: Travis Mack <[email protected]> Date: 6/27/16 6:22 PM (GMT-08:00) To: [email protected] Subject: Re: EXTENDED COVERAGE SPRINKLERS You are reading wrong. You need to calculate 5 ex COV sprinklers at a minimum. You don't have to do 5x324. If they only cover 1400 sq ft for whatever reason so be it. You still calc 5. Travis Mack, SET MFP Design, LLC "Follow" us on Facebook: https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone On Jun 27, 2016, at 6:07 PM, Trillium Fire Sprinkler Design Inc. <[email protected]> wrote: I HAVE A 750 SQFT CLASS ROOM. DUE TO THE CONFIGUARTION OF THE LIGHTS AND A FEW BUMP OUTS IN THE WALLS. I NEED TO USE FIVE 18x18 EC SPRINKLERS. IF I READ THE CODE CORRECTLY. I NEED TO CALCULATE 5 TIMES 324 SQFT. WHICH IS 1620 SQFT. WONDERING IF I AM READING THIS RIGHT? I DON'T SEE THE ADVANTAGE WHEN I CAN USE 7 STANDARD Q.R. SPRINKLERS TO COVER THE SAME ROOM. 11' CEILINGS MY DESIGN AREA WOULD ONLY BE 923 SQFT. AM I MISSING SOMETHING? THANKS _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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