The pit has a metal grate over it with the filters being installed just below the grate. It then turns the corner and goes up out the exhaust stack. I would normally just consider the exhaust stack as the exhaust 'duct' and not the entire pit but then I got to thinking. On a friday afternoon that's probably a bad idea.
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free.www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Fri, Aug 18, 2023 at 2:20 PM BRUCE VERHEI <[email protected]> wrote: > I’d expect the underfloor to have two sections. One the plenum, is > immediately below the filter bank. > > The second is the exhaust duct. > > Best. > > bv > > On 08/18/2023 12:50 PM PDT 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' > > > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free.www.avg.com > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > > _________________________________________________________ > 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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