Bobby, My stupid question. How did this new ESFR system get approved by the AHJ if it’s so deficient?
Maybe you should reach out to the AHJ to discuss this issue and maybe he’ll allow separate FDC‘s which may not be per code but would still function if proper signage was installed. Rick Matsuda > On Oct 12, 2022, at 12:46 PM, [email protected] wrote: > > > You could put a separate fire pump for each individual riser if you wanted. > It would be astronomical in costs so not practical. But there is nothing > stating you must boost all risers. Basically, you have some systems supplied > by city water on the supply side of the pump and other systems on the > discharge side. Nothing in any standard I am aware of that prohibits that > option. > > Please rate our customer service > > Travis Mack, RME-G, COC, SET > Senior Engineering Manager > MFP Design > 480-505-9271 ext. 700 C: 480-272-2471 > [email protected] > [email protected] > www.mfpdesign.com > > Send large files to us via: https://www.hightail.com/u/MFPDesign > > From: Bobby Welch <[email protected]> > Sent: Wednesday, October 12, 2022 10:40 AM > To: Ken Wagoner <[email protected]>; Discussion list on issues > relating to automatic fire sprinklers <[email protected]> > Subject: [Sprinklerforum] Re: ESFR Addition > > 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 > [email protected] | www.koorsen.com > > 24x7x365 Service: 937.660.7050 | [email protected] > > From: Ken Wagoner [mailto:[email protected]] > Sent: Wednesday, October 12, 2022 1:33 PM > To: Discussion list on issues relating to automatic fire sprinklers > <[email protected]>; Bobby Welch > <[email protected]> > 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 > > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to [email protected]
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