Since the inception of OR in LH my position was/is you can call it whatever you want doesn't make it so. To paraphrase Abe Lincoln, if you call a dog's tail a leg how many legs would it have? It would still have 4. An office is LH. If there is some use that makes it something else it probably isn't an office and you should change the use/label of the room.
You can have an office in a lab with flammable liquids, i.e. desk in the corner. You can't have flammable liquids lab in an office. Not withstanding exempt quantities. You can call it (a real office) EH but IMHO it would still have QR heads. Where there is no difference in any design issue sure over design all you want. If you are bidding against me I encourage it. For example 0.37 in HPS required, you want to do 0.6, knock yourself out. No, no really, knock yourself out. Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. 763-658-4483 763-658-4921 fax Email: [email protected] Mail: P.O. Box 69 Waverly, MN 55390 Location: 4439 Hwy 12 SW Waverly, MN 55390 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Tuesday, September 15, 2009 2:16 PM To: [email protected] Subject: Re: Laborotories Playing from memory (always a dangerous thing), building design for labs is heavy influenced by separation considerations which also directly impact the sprinkler design. Make sure the IBC and NFPA 45 requirements are covered while you're doing the consult work for the engineer. Hearing the words "I'm unsure" doesn't warrant a lot of confidence though I'm sure that was uttered in the presence of the owner. This does make me wonder why aren't you just following the spec (though it MAY be overkill, it's not wrong). A more pertinent question might be, I have a spec calling the whole building OH but parts are definitely LH. Am I still required to use QR in portions of the building? It would be a better question if the spec said EH (since who wouldn't use QR in the OH so as to get the reduction) but the underlying principle still makes it a valid question. Roland On Sep 14, 2009, at 12:15 PM, Greg McGahan wrote: > Just checking in with this one... > > If you have a lab in a stand alone building - regardless of class - > all of the other rooms, etc should still be able to be protected per > normal NFPA 13 requirements, correct? Bathrooms would be Light > Hazard and so forth? We have an engineer that is not sure. And I am > just making sure I am correct and that a lab is no different than > any other mixed occupancy classification like retail, etc.. > > Thanks, > > Greg McGahan > Operations Manager > > Living Water Fire Protection > 1160 McKenzie Road > P.O. Box 877 > Cantonment, Florida 32533 > (850) 937.1850 | Fax (850) 937.1852 | Cell (850) 554.3231 > [email protected] > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
