Why can’t you use a K16.8 CMSA instead of an ESFR? Controls mode design might be a little more friendly than extinguishing mode.
> > On Feb 8, 2024 at 12:42 PM, <Ken Wagoner > (mailto:k...@parsleyconsulting.com)> wrote: > > > I'm a bit late to this discussion, however.... > > When I look at the added flow requirements in §22.4.2.4 I note that this > application is only for "area/density" design criteria, and I am skeptical to > refer this to an ESFR system, which is certainly not "area/density." > > 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) > > > > > > > On 2/8/2024 11:30 AM, Ben Young wrote: > > > > > Sorry, i meant 23.4.4.2.4 not 23.4.4.2.3 > > > > > > > > > > Benjamin Young > > > > > > > > > > > > > > On Thu, Feb 8, 2024 at 12:23 PM Ben Young <derblitzkrie...@gmail.com > > (mailto:derblitzkrie...@gmail.com)> wrote: > > > > > > > > In the 2016 edition, check out sections 23.4.4.2.3 and 23.4.4.2.5 > > > > > > > > > > > > Use those to add phantom flow based on the minimum flow from 12 > > > sprinklers. > > > > > > > > > > > > It's a variation on the theme but it should satisfy the ahj. > > > > > > > > > > > > > > > Benjamin Young > > > > > > > > > > > > > > > > > > > > > On Thu, Feb 8, 2024 at 11:55 AM Matt Grise <mattgri...@gmail.com > > > (mailto:mattgri...@gmail.com)> wrote: > > > > > > > > > > > We are looking at an auto repair facility that has a very small tire > > > > storage room (apx 300sf). The tire storage space is open on one side to > > > > the misc parts storage area (short-shelf OH2). Our thought was to > > > > protect the tire storage space with a small ESFR system that extends > > > > 15' into the misc parts storage area. The other 3 sides of the tire > > > > storage room are CMU and extend to the deck. > > > > > > > > > > > > Even with the 15' extension into the lesser hazard area, there are > > > > only 6 ESFR sprinklers needed. (2 heads on 3 lines) = 540sf. > > > > > > > > > > > > > > > > Based on the annex commentary in NFPA 13 2016 A11.1.2, our plan was to > > > > calc the 6 esfr heads (the full higher-hazard area plus 15' = 540sf) > > > > along with 960sf at .2gpm/sf to round out the larger of the two > > > > operating areas. > > > > > > > > > > > > > > > > > > > > > > > > We received some pushback because there is no ESFR design criteria that > > > > only uses 6 heads, so the plan reviewer was concerned that we were not > > > > following the 12-head design for an ESFR system. > > > > > > > > > > > > > > > > There was a suggestion that we should pretend there were 12 heads and > > > > calc a 12 head area (even though 6 would never be installed).I figured > > > > that since we were calculating ALL of the ESFR heads in the building, > > > > that would be ok. > > > > > > > > > > > > > > > > Has anyone seen anything like this before? Any thoughts? > > > > > > > > > > > > > > > > Thanks! > > > > > > > > > > > > > > > > Matt Grise > > > > > > > > > > > > > > > > > > > > > > > > _________________________________________________________ > > > > SprinklerForum mailing list: > > > > > > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > > > To unsubscribe send an email to > > > > sprinklerforum-le...@lists.firesprinkler.org > > > > (mailto:sprinklerforum-le...@lists.firesprinkler.org) > > > > _________________________________________________________ SprinklerForum > > mailing list: > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > To unsubscribe send an email to > > sprinklerforum-le...@lists.firesprinkler.org > > (mailto:sprinklerforum-le...@lists.firesprinkler.org) > > > _________________________________________________________ SprinklerForum > mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to sprinklerforum-le...@lists.firesprinkler.org >
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