The array of tables are about 1000 sqft each Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (tel:860-535-2080) (ofc) 860-554-7054 (tel:860-554-7054) (fax) 860-608-4559 (tel:860-608-4559) (cell)
> > On May 13, 2024 at 10:42 AM, <Spencer Tomlinson > (mailto:[email protected])> wrote: > > > > > > I’m in the 2019 edition, but sections 9.5.5.3.1.5 and 9.5.5.3.2 may help > provide guidance. They do not up the hazard level due to an obstruction in > place, I like the idea of taking into effect a shielded fire, especially with > the size of some of these grow ops these days, but there are certain > provisions that would suggest otherwise…. > > > > > > > > > Spencer Tomlinson, PE > > > > Owner, Fire Protection Engineer > > > > > > > > > > > > Cell: 620-955-7293 > > > > > > > > > > > From: Fpdcdesign <[email protected]> > Sent: Monday, May 13, 2024 9:32 AM > To: Discussion list on issues relating to automatic fire sprinklers > <[email protected]> > Subject: [Sprinklerforum] Re: Cannabis growing > > > > > > > > > > > Travis, The definition of EH2 and section 19.3.3.1.5 both deal with > protection where there are unprotected spaces adjacent or within. The big > difference is the word “extensive” in the EH2 definition. From what I have > seen below grow tables it is a very wet environment with most of the > combustibles being water and non-water filled PVC pipe. I’m not sure that > would rise to extensive. The other argument if below the tables can be > considered a “concealed space”. Since there is no NFPA definition, we need > to go to a dictionary definition. My dictionary say the definition of conceal > is “to hide from view”. Nothing that talks about physical separation. I think > this would meet that criteria. > > > > > > > > > > > Todd G Williams, PE > > > > > Fire Protection Design/Consulting > > > > > > Stonington, CT > > > > > > 860-535-2080 (tel:860-535-2080) (ofc) > > > > > > 860-554-7054 (tel:860-554-7054) (fax) > > > > > > 860-608-4559 (tel:860-608-4559) (cell) > > > > > > > > > > > > > > > > > > > > > > On May 13, 2024 at 10:07 AM, <Travis Mack (mailto:[email protected])> > > wrote: > > > > > > > > > > > > > > > > The 3000 sq ft is specifically for unprotected concealed combustible > > spaces. So I don’t see how that could be used as you don’t have that from > > what you describe. > > > > > > > > > > > > > > > > > > > > > > > > > > > > Travis Mack, SET > > > > > > > > M.E.P.CAD | > > > > > > > > 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 > > > > > > > > www.mepcad.com > > (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.mepcad.com_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=SMKi3MpB_L04QTNOI8wsXTbQAi8Ov0kr5kJ9QWv4K58&m=Rt2Ku0kdmBZShB-fHbPlOHh8rfl-aQkPP6VbfAr-e7kT2fRmXYAjbMGp_kV4Nqy3&s=UpVuXPq25y_S_GAXByMhUQqOZrb0zMeyhfjGV8qVydo&e=) > > | m: 480.547.9348 > > > > > > > > > > > > > > > > AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD > > > > > > > > > > > > > > > > Book appointment time in my calendar > > > > > > > > https://calendly.com/t_mack_mepcad > > (https://urldefense.proofpoint.com/v2/url?u=https-3A__calendly.com_t-5Fmack-5Fmepcad&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=SMKi3MpB_L04QTNOI8wsXTbQAi8Ov0kr5kJ9QWv4K58&m=Rt2Ku0kdmBZShB-fHbPlOHh8rfl-aQkPP6VbfAr-e7kT2fRmXYAjbMGp_kV4Nqy3&s=Mqd76qng9bxij52cNbe4j_54BKlqyfyCL638vCVKos8&e=) > > > > > > > > > > > > > > > > > > > > > > > > > > From: Fpdcdesign <[email protected] (mailto:[email protected])> > > Sent: Monday, May 13, 2024 7:05:28 AM > > To: Discussion list on issues relating to automatic fire sprinklers > > <[email protected] > > (mailto:[email protected])> > > Subject: [Sprinklerforum] Re: Cannabis growing > > > > > > > > > > > > > > > > > > > > > > > > > > Travis, What I have run into out here is that the grow tables are not fixed > > in place. Consequently, they become “furniture” and protection is not > > installed underneath. (I am trying to get that information). If they are > > not fixed, does the 3000 sqft area increase apply or do we go to EH2? > > > > > > > > > > > > > > > > > > > > > > Todd G Williams, PE > > > > > > > > > > Fire Protection Design/Consulting > > > > > > > > > > > > Stonington, CT > > > > > > > > > > > > 860-535-2080 (tel:860-535-2080) (ofc) > > > > > > > > > > > > 860-554-7054 (tel:860-554-7054) (fax) > > > > > > > > > > > > 860-608-4559 (tel:860-608-4559) (cell) > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On May 13, 2024 at 9:25 AM, <Travis Mack (mailto:[email protected])> > > > wrote: > > > > > > > > > > > > > > > > > > > > > What unprotected concealed combustible spaces are you referencing? The > > > 3000 sq ft is for that. Typically with grow houses, we have put > > > sprinklers under the racks of tables, if I am understanding correctly > > > what you are describing. > > > > > > > > > > > > > > > > > > > > > > > > These houses are definitely a unique protection scheme and it seems the > > > ways of the growers changing things to maximize product growth is ever > > > changing and does need a constant review. > > > > > > > > > > > > > > > > > > > > > > > > I have seen some where the tables slid along a racking system. It was > > > similar in concept to movable rack storage. Since we couldn’t put > > > sprinklers below the table areas, the AHJ said to protect as a heavily > > > shielded fire and do the overhead system as EH2. I’m not sure if that > > > is the best method, but it did get it through in that particular > > > jurisdiction. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Travis Mack, SET > > > > > > > > > > > > M.E.P.CAD| Instructor / Support > > > > > > > > > > > > 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 > > > > > > > > > > > > www.mepcad.com > > > (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.mepcad.com_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=SMKi3MpB_L04QTNOI8wsXTbQAi8Ov0kr5kJ9QWv4K58&m=Rt2Ku0kdmBZShB-fHbPlOHh8rfl-aQkPP6VbfAr-e7kT2fRmXYAjbMGp_kV4Nqy3&s=UpVuXPq25y_S_GAXByMhUQqOZrb0zMeyhfjGV8qVydo&e=) > > > | m: 480.547.9348| Whatspp: +14805479348 > > > > > > > > > > > > Email: [email protected] (mailto:[email protected]) > > > > > > > > > > > > > > > > > > > > > > > > AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > From: Fpdcdesign <[email protected] (mailto:[email protected])> > > > Sent: Monday, May 13, 2024 4:49 AM > > > To: Sprinklerforum <[email protected] > > > (mailto:[email protected])> > > > Subject: [Sprinklerforum] Cannabis growing > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I know that NFPA 420 is coming but I believe has not been issued yet. I > > > have been asked to look at a new growing facility. NFPA 13 calls out > > > agriculture facilities os OH2, which make sense for this occupancy. My > > > question comes from the tables. The tables are portable so sprinklers are > > > required underneath. However, does the 3000 sqft demand area for > > > unprotected spaces come into play? I would like to do something that is > > > at least close to what 420 will be recommending. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Todd G Williams, PE > > > > > > > > > > > > > > > Fire Protection Design/Consulting > > > > > > > > > > > > > > > > > > Stonington, CT > > > > > > > > > > > > > > > > > > 860-535-2080 (tel:860-535-2080) (ofc) > > > > > > > > > > > > > > > > > > 860-554-7054 (tel:860-554-7054) (fax) > > > > > > > > > > > > > > > > > > 860-608-4559 (tel:860-608-4559) (cell) > > > > > > > > > > > > > > > > > > > > > > > > _________________________________________________________ SprinklerForum > > > mailing list: > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > > To unsubscribe send an email to > > > [email protected] > > > (mailto:[email protected]) > > > > > > > > > > > > > > > > > > > > > _________________________________________________________ SprinklerForum > > mailing list: > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > To unsubscribe send an email to > > [email protected] > > (mailto:[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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