Craig, Could be that the design person is considering this to be two adjacent hazards and extending the more stringent design criteria 15' beyond. This is required when there is no barrier separating the two hazards. Is there a barrier separating the two rooms? All the barrier need be is a curtain wall that delays heat spread. See 12.3.
Bob Knight, CET III 208-318-3057 www.firebyknight.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, April 03, 2012 9:18 AM To: [email protected] Subject: mixing densities in same calculated area Got a submittal package where the contractor has two divided rooms. One is 0.40/3000 and adjacent room is .17/2000. He is calculating the .40 area and has extended his hyd remote area beyond the wall of the room into the adjacent .17 area and calced about 8 heads. The .40 room is plenty large enough to allow the additional sprinklers to be calced from within the room. Off the top of your head does anyone know where this type of thing is addressed within NFPA 13? Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.1913 / Virus Database: 2114/4911 - Release Date: 04/02/12 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
