You could run the ductile and run galvanized, sloped within the ductile. This way the carrier pipe is not exposed to the soil and potential direct damage, you also get to provide the proper slope for drainage.
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: [email protected] [mailto:[email protected]] On Behalf Of Paul Pinigis Sent: Friday, February 20, 2009 11:01 AM To: [email protected] Subject: RE: underground pre-action piping I would suggest mechanical-joint cement-lined ductile iron, but I do not know how you are going to drain it short of putting in a pit. Paul Pinigis, P.E. Life Safety Department Head -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Lori Kitchen Sent: Friday, February 20, 2009 10:14 AM To: [email protected] Subject: underground pre-action piping We are working on the underground for a project where a remote building is to be protected by a pre-action system whose valve is in a different building 50ft away. The underground connecting these two buildings is to be part of the pre-action system (piping filled with air). In other words, the pre-action valve is in building A. The piping runs underground (after the valve) to building B. This is a new one for us. My questions are what type of pipe do you use for this purpose and how do we drain the water out of the underground? I appreciate any info! Lori Kitchen Whitewater Fire Sprinkler 316-295-4120 (office) 316-295-4162 (fax) _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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 http://lists.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)
