No there is no existing fire pump the existing risers are feed from the city water supply. There is a new addition being added to the building which requires a ESFR system my question was is there a code that does not allow me to tie in to the bottom of one of the existing risers to feed a new fire pump that only supply’s the new addition.
Bobby Welch | Sprinkler Systems Designer KOORSEN FIRE & SECURITY 3577 Concorde Rd, Vandalia, OH 45377 P 937.641.8403 | Ext. 0318 | M 937.594.8457 bobby.we...@koorsen.com<mailto:bobby.we...@koorsen.com> | www.koorsen.com<http://www.koorsen.com> 24x7x365 Service: 937.660.7050 | servic...@koorsen.com From: Ken Wagoner [mailto:k...@parsleyconsulting.com] Sent: Wednesday, October 12, 2022 1:33 PM To: Discussion list on issues relating to automatic fire sprinklers <sprinklerforum@lists.firesprinkler.org>; Bobby Welch <bobby.we...@koorsen.com> Subject: Re: [Sprinklerforum] ESFR Addition Bobby, I have to admit I'm sort of baffled here. If I read this correctly, the discharge flow and pressure from the existing fire pump will not supply sufficient flow and pressure to the base of the new riser, as required by the K16.8 ESFR sprinklers. So your thinking is to provide tap the water supply line upstream of the existing fire pump, and direct a new service independent of the pump which will supply the riser for the new ESFR's. What troubles me is that if the supply through the pump is inadequate, how would the supply without a fire pump be able to achieve the required flow/pressure at the base of the riser. Can you expand on this for me please? sincerely, Ken Wagoner, SET Parsley Consulting 500 West Mechanic Street Harrisonville, Missouri 64701-2235 Phone: (760) 745-6181 Visit the website<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1>
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