The final word from the building department is that there is supposed to be a fire separation between the Office area and Warehouse unless the Office space is "VAGUE ALERT" less than a certain percentage of whouse space and therefore it is able to be classified as something akin to incidental space for the warehouse. In this case that is what they did so the space will be open above and we will protect the space.
Thanks for the input. Greg Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 Fax: 850-937-1852 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent: Monday, June 18, 2007 10:39 AM To: [email protected] Subject: Re: warehouse offices You DO have to protect it, see 13:8.14.22 (02 ed). Although there is no fuel load, we are protecting the steel from the heat of an adjacent fire. With that in mind, let's consider a store with the rear storage open to the area above the ceiling over the mercantile area. Do you think heads 300 ft away from the rear will be needed to protect against the heat? As such, you'd think our proposal to only require a row or two within that area would be a slam dunk. It was indeed slammed and dunked as part of the rejection. On single side exposure like the store, the easy thing is to put up a layer of sheet rock so it's a non-combustible concealed space. The separation does not require a rating but just a physical barrier capable of delaying heat just like 13:11.1.2 (lets say it's small enough to be Accessory Use or meets the mixed occupancy requirements to avoid the code separation discussion). When you can't separate the area, as already said the design basis after the 15 ft overlap is based upon the fuel load below the system. As for the issue of using QR after the 15 ft overlap, 13:8.3.3.2 says ALL heads in the same compartment must be QR. HAving said that, though, we do allow ESFR in the same compartment with standard response sprinklers as long as we have a draft curtain and a critical 4 ft aisle beneath the curtain (8.4.6.4). That shouldn't be a problem since there is zero fuel above the drop ceiling. Needless to say, having a nice chat with the AHJ BEFOREHAND is a must. Roland On Jun 16, 2007, at 10:28 AM, Greg McGahan wrote: > I have seen this situation handled 3 ways and have my own opinion > but would > like to see what you all think. > > If you have an ordinary metal building warehouse with normal Ord > Hazard > Group II storage with an office area you often end up with space > above the > offices. In this case the offices will have lay in tile ceilings with > insulation on top of the ceiling and no structure above the ceiling. > Therefore there will never be storage on top of the offices. There is > Approximately 14' of clear space above the offices of non combustible > construction with no separation between the space above the offices > and the > warehouse. > > The offices represent approx. 30% of the total area of the building. > > > Sprinklers will be installed under the ceiling of the offices. > > Do you protect above the offices completely? > > Do you protect 15' of the space from the warehouse side? > > Do you ignore it? > > Thanks, > Greg > > > Living Water Fire Protection, LLC > 1160 McKenzie Road > Cantonment, FL 32533 > 850-937-1850 > Fax: 850-937-1852 > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:Sprinklerforum- > [EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
