To follow up what Mark stated. 12.3 Adjacent Hazards or Design Methods. For buildings with two or more adjacent hazards or design methods, the following shall apply:
(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from a fire in one area from fusing sprinklers in the adjacent area, the required sprinkler protection for the more demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter. (2) The requirements of 12.3(1) shall not apply where the areas are separated by a draft curtain or barrier located above an aisle, horizontally a minimum of 2 ft (600 mm) from the adjacent hazard on each side, or a partition that is capable of delaying heat from a fire in one area from fusing sprinklers in the adjacent area. (3) The requirements of 12.3(1) shall not apply to the extension of more demanding criteria from an upper ceiling level to beneath a lower ceiling level where the difference in height between the ceiling levels is at least 2 ft(600 mm), located above an aisle, horizontally a minimum 2 ft (600 mm) from the adjacent hazard on each side. Duane Johnson, PE Design Manager Strickland Fire Protection 5113 Berwyn Road College Park, MD 20740 301-474-1136 Office 301-455-0010 Cell -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, January 5, 2016 8:33 PM To: [email protected] Subject: Re: Mixing ESFR Heads Design the K25 systems to extend 20' beyond the rack storage area and you should be good to go. Mark at Aero 602 820-7894 Sent from my iPhone > On Jan 5, 2016, at 4:22 PM, "James Crawford" <[email protected]> wrote: > > Ceiling elevation is the same across the entire building > > > > Thank you > > > James Crawford > Phaser Fire Protection Ltd. > Phone 604-888-0318 > Fax 604-888-4732 > Cel 604-790-0938 > Email [email protected] > > > > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] > On Behalf Of Travis Mack, SET > Sent: Tuesday, January 05, 2016 3:13 PM > To: [email protected] > Subject: Re: Mixing ESFR Heads > > We do it when we have high bays that require the larger k-factor and > then lower roof areas that the smaller works. > > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] > > http://www.mfpdesign.com > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > Send large files to us via: https://www.hightail.com/u/MFPDesign > >> On 1/5/2016 4:11 PM, James Crawford wrote: >> Looking at a 400,000 sq.ft. building with multiple storage >> arrangements, on the floor, on single and double row racks. Each >> about > half the building. >> >> >> >> Can you use K25 ESFR heads for the rack storage (exposed expanded >> Group A >> plastics) and K17 heads for the storage on the floor (class 4 > commodities)? >> >> >> >> Thoughts as I cannot find anything that says you can't. >> >> >> >> 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-firesprink >> l >> er.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.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
