How are the electricians running hidden conduit for the lighting? How is the insulation hidden?
On Fri, Dec 3, 2010 at 7:11 AM, <[email protected]> wrote: > Really, deluge? Since many people freak out with wet systems and the > potential of one sprinkler opening I can't imagine an architect or owner > embracing a deluge system in this type of environment. Although if you tell > them it's a sprinkler system like they've seen in the movies maybe they would > think that as being OK. > > Also there are spacing restrictions on discharge nozzles which are more > restrictive than for wet systems, 10 ft horizontally unless the nozzle is > specifically listed for spacing exceeding that amount. > > And in this type of environment under these conditions, I'd personally would > never suggest using a smoke detector. Too many potential for false trips > unless you cross-zone them by using Ion and PE types. Heat detection would > be my first choice unless there would be some extenuating circumstances that > would prevent their use. > > Craig L. Prahl, CET > Fire Protection > CH2MHILL > Lockwood Greene > 1500 International Drive > Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > CH2MHILL Extension 74102 > [email protected] > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Chris Cahill > Sent: Friday, December 03, 2010 9:34 AM > To: [email protected] > Subject: RE: difficult one > > For some reason this stuck in my mind, now I have an answer you might > pursue. > > I think the deluge solution might have some merit. Often I think we forget > to separate the 2 distinct functions of a sprinkler head. First and I do > mean first it is a heat detector. Second it water distribution > valve/device. The Code deals with both - heads within 12"....3x rule... > > I don't see a reason you can't get equivalent detection from some other > device. Could even be a smoke detector as they are faster than heats. Next > make sure the head distribution covers the floor with the minimum density. > There isn't even a reason to locate the heads near the ceiling as long as > the distribution is adequate. Probably a few, 4' or 5' above the floor would > be adequate. And with a deluge you are getting extensive pre-wetting far in > excess or standard wet, dry, PA systems. > > Now this isn't a sprinkler contractor solution as it is outside the Code. > Will require a PE to be legal. And obviously AHJ agreement. > > Chris Cahill > >> >> -----Original Message----- >> From: Greg McGahan<[email protected]> >> Sender: [email protected] >> Date: Thu, 02 Dec 2010 16:46:25 >> To:<[email protected]> >> Reply-To: [email protected] >> Subject: difficult one >> >> The situations is this: >> >> Preface - I have already exhausted the "you can't because" in trying to >> convince him to run two lines exposed in this space. >> >> Light Hazard >> Corridor / Lobby with a center section Sloped, exposed construction 8 >> in on 12in - 20' in width >> On each side the ceiling drops about 4' to smooth flat ceilings >> >> The architect wants to find a way to eliminate exposed pipe. He prefers >> to use sidewalls on the vertical 4' sides which I told him we could not > do.. >> His question is can he install detection at the peak, use sidewalls as >> described above with a deluge valve. >> >> Does anyone have any other creative ideas for this situation? >> >> Thanks, >> Greg >> > > -- > Greg C. McGahan Living Water Fire Protection, LLC. 1160 McKenzie Road > Cantonment, FL 32533 850-937-1850 Fax 850-937-1852 > _______________________________________________ > > _______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ 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)
