The elephant in the corner is the required containment if there is that building code requirement. How that is accomplished is a function of the fire protection application rate. There could be a pretty big oops going on.
> On Feb 17, 2020, at 1:12 PM, Prahl, Craig/GVL via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > Understood. I wasn’t sure if this was something that got dumped on you as it > seems that if the issue has the word “fire” in it, it is assumed to be a fire > protection issue. Sometimes it’s hard to convince others who just don’t know > any better that we don’t design, specify or install fire places, fire trucks, > fire stops, fire doors, fire dampers, etc., etc.. > > A 3-hour fire separation requirement under these conditions, wow! > > Thanks for the kind words on that article. It was fun to write but difficult > in trying to figure out how to jam so much information into a limited number > of words. It was the tip of the iceberg so to speak when it comes to dealing > with special hazard conditions. > > Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 | > craig.pr...@jacobs.com <mailto:craig.pr...@jacobs.com> | www.jacobs.com > <http://www.jacobs.com/> > 1041 East Butler Road Greenville, South Carolina 29606 > > From: Vince Sabolik <vi...@wtfp.net> > Sent: Monday, February 17, 2020 1:32 PM > To: Prahl, Craig/GVL <craig.pr...@jacobs.com>; > sprinklerforum@lists.firesprinkler.org > Subject: Re: [EXTERNAL] Anybody hit this wall? > > Thanks, Craig - > > First, I'm not going to consult here; I avoid consulting for a variety of > reasons. > I'm going to do this the old fashioned way and provide a design as specified > by the insurance underwriter. > > However, to refresh my knowledge of the process I read your article from > Sprinkler Age, June 2017 > "Surround and Drown" before I went to the meeting. Thanks for a great read! > > There is an underwriter available here, but the owner indicated that he was > told by the architect that > he had to furnish the 3 hour wall described. I have seen this once, maybe > twice in a very long career, hence > my curiosity of the rating requirement. > > Thank you for the article and response. > > > > On 2/17/2020 1:09 PM, Prahl, Craig/GVL wrote: > When dealing with separations and H occupancies, there are numerous factors > involved when determining separation requirements. There is not a simple, > short yes or no to your question. H4 typically doesn’t automatically require > a fire rated separation just because it’s an H occupancy. > > Per the Bldg/Fire codes, S-2 doesn’t require sprinklers, it’s assumed to be a > low hazard storage. H4 is typically health hazards like toxics, highly > toxics, corrosives. No ignitables under H-4, they’d be H2 or H3. But you > could still have ignitables present, just under the Max. Allowable > quantities. If you’re responsible for determining design criteria you should > get a chemical inventory. Also, if the H4 occupancy is driven by corrosives, > there is a high likelihood that you could have plastic containers like totes > or drums. Might be good to ask about that and if they plan to store any > containers in the H4 area as it could affect the sprinkler design criteria. > > If there’s an architect involved I’d ask them about the fire rating of the > separation wall especially if you have to penetrate it and fire stop your > penetrations. > > Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | 864.676.5252 | > craig.pr...@jacobs.com <mailto:craig.pr...@jacobs.com>| www.jacobs.com > <http://www.jacobs.com/> > 1041 East Butler Road Greenville, South Carolina 29606 > > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> > <mailto:sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of Vince > Sabolik via Sprinklerforum > Sent: Monday, February 17, 2020 11:54 AM > To: sprinklerforum@lists.firesprinkler.org > <mailto:sprinklerforum@lists.firesprinkler.org> > Cc: Vince Sabolik <vi...@wtfp.net> <mailto:vi...@wtfp.net> > Subject: [EXTERNAL] Anybody hit this wall? > > Good morning Forum - > > This is a new one on me. > > A building with two Use Groups, H4, S2 is separated by a wall and is fully > sprinklered > per NFPA. > > Does the separating wall need to be rated? > > > -- > <image001.jpg> > 11351 Pearl Road / Suite 101 > Strongsville, Ohio 44136 > Phone 440 238-4800 Fax 440 238-4876 Cell 440 724-7601 > > Vince Sabolik > > > NOTICE - This communication may contain confidential and privileged > information that is for the sole use of the intended recipient. Any viewing, > copying or distribution of, or reliance on this message by unintended > recipients is strictly prohibited. If you have received this message in > error, please notify us immediately by replying to the message and deleting > it from your computer. > > > -- > <image003.jpg> > 11351 Pearl Road / Suite 101 > Strongsville, Ohio 44136 > Phone 440 238-4800 Fax 440 238-4876 Cell 440 724-7601 > > Vince Sabolik > > > NOTICE - This communication may contain confidential and privileged > information that is for the sole use of the intended recipient. Any viewing, > copying or distribution of, or reliance on this message by unintended > recipients is strictly prohibited. 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