I would design using the duct criteria if the pit is after the filters. You might argue for EH if the filters are after the pit…but it’s still not inside the booth. Just my opinion. Rick Matsuda
> On Aug 18, 2023, at 3:23 PM, Anthony Johnson <[email protected]> > wrote: > > > The question was more about duct criteria vs EH2 criteria. There are > different discharge requirements for the sprinklers in ducts compared to the > rest of the booth. > > Virus-free.www.avg.com > >> On Fri, Aug 18, 2023 at 12:51 PM Rick Matsuda <[email protected]> wrote: >> Yes, install sprinklers in the pit and along any “ductwork” that goes from >> the pit to the exterior. >> >>>> On Aug 18, 2023, at 2:43 PM, Anthony Johnson <[email protected]> >>>> wrote: >>>> >>> >>> Hi Folks, >>> Quick one for the day - is a paintbooth pit to be considered as a duct? I >>> know most people, at least I do, think of a duct as a cylindrical or >>> rectangular sheet metal tube for ventilation. A quick google dictionary >>> defines it as a tube or 'passageway' for converting air, liquid whatever. >>> That leads me to the question of whether a downflow paintbooth pit would be >>> considered a duct for design purposes and would require the duct protection >>> criteria of NFPA 33 which requires a minimum of 30 gpm at 15 psi for the >>> sprinklers? >>> >>> Best Regards, >>> Anthony Johnson >>> Mountain Fire Protection >>> 'Saving Lives and Valuing Property' >>> >>> Virus-free.www.avg.com >>> >>> _________________________________________________________ >>> SprinklerForum mailing list: >>> https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org >>> To unsubscribe send an email to [email protected] >> >> _________________________________________________________ >> SprinklerForum mailing list: >> https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org >> To unsubscribe send an email to [email protected] > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to [email protected]
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