Kevin, Thanks for the response. I should have asked my questions in two parts. First the 8'-0 minimum which you stated the committee has and is looking at and secondly is the (12) ESFR fire sprinkler calc area. Does or should the area square footage come into play in the design? At the 8'-0 minimum the cover area is 768 sq. ft. minimum. If it is allowed to be spaced at less than the 8'-0 minimum when in channels/pockets that are 4' or 5', then the coverage area would only be 480 or 600 sq. ft. Does this area start to get to small to provide the proper floor coverage to suppress the fire?
Thanks, Gregg Fontes Cen-Cal Fire Systems, Inc. 209-334-9119 -----Original Message----- From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of Kevin Hall via Sprinklerforum Sent: Wednesday, October 07, 2020 5:25 AM To: sprinklerforum@lists.firesprinkler.org Cc: Kevin Hall <kh...@firesprinkler.org> Subject: Re: ESFR and Obstructed Construction As the standard is currently written, there is no relief from the 8’-0 minimum spacing requirement for ESFR sprinklers. The committee did discuss this issue for the 2022 edition and would allow distances less than 8’-0 where the ESFR sprinklers are installed in each channel in obstructed construction. As long as the deflector is above the bottom of the beam, spacing within each channel is still required to be at least 8'-0, but minimum spacing between sprinklers in different channels is permitted to be less than 8'-0. Technically baffles are still not allowed, but this would provide relief in the future pending acceptance in the second draft. Kevin Hall On Tue, Oct 6, 2020 at 5:26 PM Gregg Fontes via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote: > With a 36' high building, the max spacing would be 10' apart and the > esfr is 6' apart due to the beams. This is a 60 sq. ft. coverage area. > The esfr cut sheet state a minimum area of 64 sq. ft., 64 sq. ft. x > (12) esfr is > 768 sq. ft. minimum design area, would you have to add an esfr fire > sprinkle in the calc to meet the 768 sq. ft. area or esfr are not > allowed due to not meeting the 64 sq. ft. minimum per esfr sprinkler? > > Thanks, > Gregg Fontes > Cen-Cal Fire Systems, Inc. > 209-334-9119 > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> > On Behalf Of James Crawford via Sprinklerforum > Sent: Tuesday, October 06, 2020 12:54 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: James Crawford <jcrawf...@phaserfire.ca> > Subject: ESFR and Obstructed Construction > > I am looking at a building 36" high that is using beams for the roof > construction, they are spaced at 6'-0" on center and are 24" deep. > > The sprinkler design is asking for ESFR but I am not sure if this will > work, I know we can use ESFR in obstructed construction but my > understanding is the heads location still needs to comply with the listing. > > So based on this I would need a head in every bay created by the beams > and the head would need to be 14" or 18" max from the deck. > > Am I missing something? > > Thank You > > James Crawford > Phaser Fire Protection Ltd. > Phone 604-888-0318 > Cel: 604-790-0938 > Email jcrawf...@phaserfire.ca<mailto:jcrawf...@phaserfire.ca> > Web: www.phaserfire.ca<http://www.phaserfire.ca> > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
