An ordinary hazard group 1 classification for a parking garage is most likely not appropriate for any modern garage. The 2022 edition of NFPA 13 annex has changed "parking garages" to an ordinary hazard group II classification and the technical committee had discussion on changing to extra hazard group I or II. The NFPA research Foundation is looking into this hazard. To state this classification is in flux, is an understatement. Think about the vehicles of today versus the vehicles of the 1950s to 1970s.
A "vehicle" with generators, cooking appliances, fuel for them, and other hazards are not a normal vehicle. My RV is not a normal vehicle. One needs to look at the hazards. It is important to understand that the engineer on record is responsible to provide this hazard analysis classification. The Society of Fire Protection Engineer’s Position statement PS 2020-1 states: The Engineer’s responsibilities for the design can include, but are not limited to: A. Evaluate the broad range of hazards and protection schemes required to develop a workable, integrated solution to a fire safety problem. B. Prepare engineering documents for fire protection systems. This may include: ∙ Conceptual and detailed engineering documents ∙ Hazard and risk analyses ∙ Performance-based design analyses ∙ Integrated building systems analyses ∙ Fire protection system drawings ∙ Calculations for all fire protection systems, as necessary ∙ Technical specifications indicating general, product, and execution requirements ∙ Affix a professional stamp or seal with signature and date to documents prepared under the Engineer’s direct supervision and control. It is the responsibility of the engineer to determine the hazard, risk and workable, integrated solution for the fire safety problem. Thanks, John John August Denhardt, PE *Vice President, Engineering and Technical Services* *American Fire Sprinkler Association* m: p: 301-343-1457 214-349-5965 ext 121 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Our members are at the heart of everything we do.* Expand your design department in 2022! Learn design with AFSA's Beginning Fire Sprinkler System Planning School. Our technical experts teach the basics of system layout based on the 2019 edition of NFPA 13. Space is limited. Enroll today at: www.firesprinkler.org/schools. On Fri, Jan 14, 2022 at 10:56 AM Kyle.Montgomery via Sprinklerforum < sprinklerforum@lists.firesprinkler.org> wrote: > It's always been my understanding that the different hazard > classifications are based upon the fuel load of a potential fire, not the > likelihood that there will be a fire. So whether there is a stove in > operation or not shouldn’t really change the hazard. > > So you come back to fuel load, which is present whether you are cooking in > the truck or the truck is parked. So, are you allowed to park taco trucks > in a parking garage? In order to call a parking garage Ordinary Hazard > Group 1, do we need to have signage on the entrance that prohibits taco > trucks from entering? > > My biggest questions would be: > 1. Since they are likely parked long-term, do the have additional fuel or > other combustible supplies that wouldn't be present in a vehicle moving > from location to location? > 2. Is there a buildup of grease that needs to be considered based on how > the ventilation air is treated? > > I don't think ordinary hazard would be out of the question. I think my > first attempt would be to go OH 2, and make someone convince me that it > needed to be more than that. > > Full disclosure, I don't have the necessarily letters after my name to act > as a consultant, and I tend to be a little less conservative than our other > brothers and sisters on this forum. > > -Kyle M > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Prahl, Craig/GVL via Sprinklerforum > Sent: Thursday, January 13, 2022 10:30 AM > To: sprinklerforum@lists.firesprinkler.org; Edk <e...@bamfordfire.com> > Cc: Prahl, Craig/GVL <craig.pr...@jacobs.com>; Fpdcdesign < > fpdcdes...@gmail.com> > Subject: [EXTERNAL] RE: [EXTERNAL] Re: Food trucks inside a building > > Shielded fires wouldn't be my primary concern, fuel density and fire > intensity would be my concerns. A little fire in a truck can be handled by > a fire extinguisher. I'm not sure if food trucks are required to have > anything other than that for fire control. But a fire in one of these > units is not going to be shielded for very long if it isn't brought under > control almost immediately. > > > Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | > craig.pr...@jacobs.com | > https://urldefense.com/v3/__http://www.jacobs.com__;!!Ba8_KKAT!ZrXP5SK6t5glR-DVUQLAZqoO-M8IgbnbLSNz1_g0q5s8iY5IgvuCyhGm_e3Ao6KYcFE$ > 1041 East Butler Road Greenville, South Carolina 29606 > CONTACT BY: email or MS TEAMS > > > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Fpdcdesign via Sprinklerforum > Sent: Thursday, January 13, 2022 11:57 AM > To: Edk <e...@bamfordfire.com>; Sprinklerforum < > sprinklerforum@lists.firesprinkler.org> > Cc: Fpdcdesign <fpdcdes...@gmail.com> > Subject: [EXTERNAL] Re: Food trucks inside a building > > > > > When I saw this, my knee-jerk reaction was EH2 for shielded fire. > However, I was on a job site and had a 1:15 ride back to think about it. > > > > Most automobiles are enclosed and any fire started inside would be > “shielded”. But a parking garage has been OH1 for a long time (although > that may be reassessed). Also, the examples in NFPA 13 of shielded > occupancies are very large (Modular houses). Where is the cut off between > what OH1 would protect and EH2 be necessary? Who knows? A pick up truck has > a lot less shielded space that an SUV. It is most likely a function of the > size of the shielded area but how do you regulate that? > > > > Most food trucks are little more than delivery vans with kitchens and a > side window. If 6 regular delivery vans were parked there, how would you > protect it? > > > > I would lean toward EH2 because of the combination of the shielded space > and the kitchen inside. > > > > To Ron’s point, there are a lot of other health and safety regulations > (commercial kitchen without adequate ventilation, etc) that make this whole > occupancy sketchy to begin with. > > > > 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 Jan 13, 2022 at 10:08 AM, <Ed Kramer via Sprinklerforum (mailto: > sprinklerforum@lists.firesprinkler.org)> wrote: > > > > > > > > I'm working on a small project (approx. 7,200 sf) that is a > noncombustible structure used for parking operating food trucks indoors. > The plan shows 6 trucks spread out near the perimeter with the middle of > the building open for pedestrian traffic (maybe tables?). Ordinary Group I > hazard (parking garage) seems very inadequate. Extra hazard group II > (manufactured home assemblies) seems a bit strong. Thoughts? 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