sorry, forgot to edit the subject.
Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 craig.pr...@ch2m.com http://www.ch2m.com -----Original Message----- From: Prahl, Craig/SPB Sent: Monday, February 08, 2010 12:51 PM To: 'sprinklerforum@firesprinkler.org' Subject: RE: sand strainer? Anyone ever see something like this before? A single 10 run-in rises up and with a "Y" connection serves (2) 6" Preaction valves, above the (2) P.A. valves the 6" lines come back together to a single 10" line out to some sort of preaction system somewhere. This was the engineer's design, done in 1977. Design criteria is this: "Hazard area: 0.30 gpm/sq. ft, max. head spacing of 90 sq. ft. 17/32" orifice heads." That's all there is. Any insight or just plain insanity? Was there any restriction on size of P.A. systems in '77? This one ought to be fun. Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 craig.pr...@ch2m.com http://www.ch2m.com _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
