Nathan, It does and I can get it down to 1,800 sqft but the 12 psi backflow pressure drop and the 500 gpm hose demand are what really is killing me. We have requested an exception on the hose demand and may even propose an idea I saw on here yesterday from Thom to put a underground storage tank and dry hydrant in for hose demand only.
Hopefully they will work with us. Thanks for the feedback. Steve Kowkabany, P.E. Fire Protection Engineer Neptune Fire Protection Engineering LLC 616 Davis Street Neptune Beach, FL 32266 904-652-4200 Phone 904-212-0868 Fax -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Nathan Hatcher Sent: Thursday, September 24, 2009 2:01 PM To: [email protected] Subject: RE: Inadequte Water Steve, I'm assuming that the quick response head reduction would not apply to your facility (possibly due to a high ceiling or non-wet system)? Last I remember, I believe the UFC allows for this reduction if you start at 3,000 sq.ft. Nathan Global Fire Engineering, Inc. Tel: (813) 659-2700 | Fax: (813) 659-2727 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Kowkabany Sent: Thursday, September 24, 2009 7:18 AM To: [email protected] Subject: RE: Inadequte Water I have the single most frustrating water issue I have ever had going on right now Greg. I am working on this small commercial entrance facility at a military base in Georgia. We are only sprinklering a small 3,800 sqft cargo transfer building and getting the water from the local utility rather than the base. We designed based on modeling data that was the only thing available at design (there was no water within a mile then) and had no problem making the small light hazard wet system work. Last week the underground was finally finished and we had our main run up to the building and some nearby hydrants to test, so we tested them - 55/25 at 750 gpm. Bad water but still enough to make an little light hazard wet system work right? Not once you take a 3,000 sqft design area, a 500 gpm hose allowance due to the presence of 300 sqft of OH1 rooms, and a mandatory 12 psi pressure across the BFP regardless of the fact that it is actually a double-check - all mandatory per UFC codes. After all that, you need 850 gpm at 40 psi to make this system work and we are looking at a pump and a tank! It's a very frustrating situation, so feel free to tell your AHJ he is not alone. Steve Kowkabany, P.E. Fire Protection Engineer Neptune Fire Protection Engineering LLC 616 Davis Street Neptune Beach, FL 32266 904-652-4200 Phone 904-212-0868 Fax _______________________________________________ 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) No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.111/2386 - Release Date: 09/24/09 05:52:00 _______________________________________________ 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)
