If the density didn't changed how did the hazard change? Although at 0.45 with 5.6 do you have a sprinkler system or a mist system, lol.
Chris Cahill, PE* Associate Fire Protection Engineer Burns & McDonnell Phone: 952.656.3652 Fax: 952.229.2923 [email protected] www.burnsmcd.com *Registered in: MN Proud to be #14 on FORTUNE's 2014 List of 100 Best Companies to Work For -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Friday, October 02, 2015 2:29 PM To: [email protected] Subject: RE: Existing sprinklers Hitting a wall how? I Thing The AHJ is on point, unless there's something else to the story. Steve Leyton -------- Original message -------- From: James Crawford <[email protected]> Date: 10/02/2015 2:01 PM (GMT-06:00) To: [email protected] Subject: Existing sprinklers We have a building that was built about 30 years ago the sprinkler system was designed to NFPA 231C with a ceiling density of 0.45 gpm over 2000 square feet. There is good water pressure and the sprinkler heads are 5.6K and 286°F We have a new tenant and they require 0.45/2000 and the AHJ says the heads need to be changed to 11.2K because the density is above 0.34, I said that NFPA 25 (2008ed) section 4.1.6 Addressing Changes in Hazard, indicates that the system needs to be evaluated and if the system provides the required protection then no changes are required. Comments please I seem to be hitting a wall. Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
