This atrium is for a cancer center/clinic. I don't have any furniture layouts but I am sure they will have some seating, information desk, etc.... This is also not a FM project. Any thoughts of the OH1 balconies for elimination of buoyant smoke?
Joe Burtell, SET, CFPS Burtell Fire Protection, Inc. [EMAIL PROTECTED] www.burtellfire.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Sornsin Sent: Thursday, December 27, 2007 10:27 AM To: [email protected] Subject: RE: Atrium I can only suppose that the engineer is looking at FM Data Sheet 3-26, table 11 and declaring the atrium (with the 0.45/2500 density) to be a "heavily loaded area with or without plastics". This Table identifies FM's adjustment to design densities/areas in non-storage occupancies based on high floor-to-ceiling spaces, in this case, ceilings 35 to 60 ft. above the floor. Would you classify this atrium as heavily loaded (with combustibles)? If it were "Lightly loaded" FM would require a 0.15/3000 design below a 35 to 60 ft. ceiling. I believe the reasoning for the larger design areas/densities relates to the delayed activation of sprinklers at those elevations, and the subsequently larger fires they need to control. Mark A. Sornsin, PE Fire Protection Engineer Ulteig Engineers, Inc. Fargo, ND 701.280.8591 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Burtell Sent: Thursday, December 27, 2007 9:31 AM To: [email protected] Subject: Atrium I have an atrium/lobby where the engineer is asking for OH1 for the balconies surrounding the atrium on first and second floors. There is no glass separating the balcony from the atrium. Third floor balcony has LH with a glass wall with Tyco window sprinklers only on the balcony side. The atrium ceiling has a .45/2500 with a max spacing of 10' x 10' using a 11K QR ELO-231 sprinkler. This whole thing that was dreamed up is based on some FM data and is to control buoyant smoke in the atrium and the balconies. I personally think it's wacked and overkill. I have PDF's of the engineers concept drawings if anyone is interested. Is this a bad attempt to play an FPE? I am bidding this project and I would like to bring it back to reality and give some value engineering. Joe Burtell, SET, CFPS Burtell Fire Protection, Inc. [EMAIL PROTECTED] www.burtellfire.com _______________________________________________ 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) _______________________________________________ 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)
