Yes, except with deluge valves in NASA hangars. No insight though. Ryan Hinson Burns & McDonnell Direct: 952-656-6003 Ext 3662 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, February 08, 2010 11:52 AM To: [email protected] Subject: Strange piping arrangement
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 [email protected] http://www.ch2m.com -----Original Message----- From: Prahl, Craig/SPB Sent: Monday, February 08, 2010 12:51 PM To: '[email protected]' 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 [email protected] http://www.ch2m.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
