Craig is correct, in Washington State Washington Administrative Code (WAC) 173-303 "Dangers Waste" allows for a sprinkler density of 0.17 gpm per sq ft over the most remote 3000 sq ft. These are usually H-4 occupancies.
Dale Eggen, PE -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, May 27, 2010 5:40 AM To: [email protected] Subject: RE: Occupancy vs Hazard That's correct, just because it's "H" doesn't automatically mean you need to go "EX". One other thing to watch out for with bldgs. with "H" occupancies is the architects and PM's like to have you provide water spray on the steel so they can save money by not providing passive protection to achieve the hour protective rating. If you see that, you've got issues to raise. They will confuse the criteria in NFPA 15 for a passive protection substitute but nowhere in NFPA 13 or 15 will you find the practice of spraying certain steel elements being described as a substitute for passive protection on structural steel that is required by code. Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive 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 Fletcher, Ron Sent: Wednesday, May 26, 2010 6:03 PM To: [email protected] Subject: RE: Occupancy vs Hazard They aren't calling for UHSD or anything like that, just sprinklers. I was just curious if anyone had put an OH system into a H occupancy. I just assume that H = Extra Hazard. Guess not. Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thom McMahon Sent: Wednesday, May 26, 2010 2:33 PM To: [email protected] Subject: RE: Occupancy vs Hazard Did a high speed Deluge for a Phoenix Missile assembly building in PAX NAS 8" riser for a 24'x24' building. Explosion wasn't the hazard, as much as if the rocket motor (solid propellant) fired off. Pretty much cook the whole building if it wasn't cooled. If the warhead exploded, then the system wouldn't do any good. Just send flowers to the widow. Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 Fletcher, Ron Sent: Wednesday, May 26, 2010 5:30 PM To: [email protected] Subject: RE: Occupancy vs Hazard It's a munitions maintenance facility for missiles. I suppose once the mushroom cloud clears the type of sprinkler system wouldn't really matter. Ron Fletcher Aero Automatic Phoenix, AZ _______________________________________________ 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) _______________________________________________ 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)
