Mark, You submitted heads for testing by UL at your expense? I've understood that the process is long and not real cheap. What was the reasoning behind going to all that trouble?
Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Phelps, Mark Sent: Wednesday, December 02, 2009 10:17 AM To: [email protected] Subject: RE: Calcs-How much margin I know this is probably a very dead horse, but several times over the past 15 or so years, we have had sprinkler heads less than 5.6k tested by UL and list for use with Various brands and concentrates of AFFF for use in Group I Aircraft Hangars. All were reviewed and approved by their respective AHJ's. Mark at Aero -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Roland Huggins Sent: Tuesday, December 01, 2009 11:13 AM To: [email protected] Subject: Re: Calcs-How much margin that's a restriction that applies only to STORAGE Roland On Dec 1, 2009, at 8:38 AM, Thom McMahon wrote: > NFPA 13 has other restrictions on orifice size in OH occupancies, and > even 5.6K heads that are listed for OH cannot be used for design > densities over 0.30 GPM/SF (From memory, could be wrong #) _______________________________________________ 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)
