Not sure, all I'm finding is you don't have the 30 % increase in design area for single interlock.
David Autry Meininger Fire Protection Inc. 2521 W L St. Suite No.4 Lincoln, Ne 68522 Voice (402) 466-2616 Fax (402) 466-2617 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, March 31, 2014 3:03 PM To: [email protected] Subject: Single interlock PA equal to Wet At some point in time I thought I had seen a blurb in NFPA 13 which stated that for some certain design conditions a single interlock preaction system was considered the same as a wet pipe system. The rationale behind the premise being that the system piping would be charged prior to activation of sprinklers. Trying to look for a similar statement in NFPA 13 2010, and not just finding it. Anyone recall this in prior or the 2010 edition? Craig L. Prahl, CET Fire Protection Group Lead CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29303 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.o rg _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
