NFPA 13, 2002 (12.1.1) and 2007 (12.1.1) state that "Sprinkler protection criteria are based on the assumption that roof vents and draft curtains are not being used." Obviously, if roof vents aren't being used, then fans that may be on at the time of a fire would not be considered in the design criteria either. Since the 13 criteria isn't based on fans operating then I'd recommend against them. Manually operated fans for F.D. operations only, maybe.
Scott Futrell (763) 425-1001 Office (612) 759-5556 Cell -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael James Sent: Thursday, January 25, 2007 3:30 PM To: [email protected] Subject: Big Ass fans in big box retail stores Hello, A client has asked that we look at installing a number of Big Ass fans in a big box retail store. The store has control mode density area sprinklers. Having read the previous thread re Big Ass fans and ESFR sprinklers do the same concerns re air velocity and moving obstructions apply to contol mode sprinklers. What are peoples thoughts on this? Also should the fans stop on a fire alarm or stay running? Thanks, Michael James Fire Safety Engineer Pacific Consultants Auckland NZ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
