Still exceeds the 130sqft. You will still have to have enough pressure to throw the 7 feet, to do so it would be 14x10?
The only exception to the rule that I am aware of is for ESFRs and that is only allowed due to obstructions. 10’,11’,9’,10,10,11’,9’…..) [cid:AFPLogo_RGB_lowres_9529ab03-e36a-499c-b9f9-22f825b4c5b5.png] Raymond Delling Director of Pre-Construction / Chief Estimator ALLIED FIRE PROTECTION 2003 Mykawa Road, Pearland, Texas 77581 281.485.6803 OFFICE | 832.435.7797 MOBILE raym...@alliedfireprotection.com<mailto:raym...@alliedfireprotection.com> | <http://www.alliedfireprotection.com> <https://alliedfireprotection.com> <http://https:///alliedfireprotection.com> www.alliedfireprotection.com<https://alliedfireprotection.com> Continually setting the standard of excellence in fire and life safety From: Fpdcdesign <fpdcdes...@gmail.com> Sent: Thursday, March 21, 2024 4:57 PM To: Sprinklerforum <sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Multiple sprinkler spacings I am working on a project which is a retail store being renovated for a new tenant. The previous retail tenant had been in the space for at least 20 years. The existing sprinklers below the ceiling (to remain) are spaced at 10 ft in one direction and alternate 10 ft and 14 ft (10-14-10-14…) in the other. I made the comment that the sprinkler spacing exceeds the 130 max requirement of NFPA 13 and it needs to be modified. The architect (and his “value engineer”) decided that 1/2 the distance on one side is 7 ft and on the other side is 5 ft, which equals 12, times 10 ft in the other direction equals 120 sqft and all is fine. The Fire Marshal is kind of buys into it because he is new and his department blew it 20 years ago. Unfortunately 13 doesn’t address their being to possibility of different spacings between sprinklers (such as ‘maximum’ distance between sprinklers when determining S and L). Any thoughts, ideas or references I am missing as I walk into this battle? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-554-7054<tel:860-554-7054> (fax) 860-608-4559<tel:860-608-4559> (cell)
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