We are always required to do a hydro at rough, and about 80% of the time at final. Our biggest problem is pressure fluxuation. Pump it at 10Am on a summer day and it may go up 10-15 Psi as the ambient rises. (The AHJ occasionally thinks we "bumped the pump") Pump it up at 3Pm on a winter day, and it will drop at least that much as it's dark out at 5pm.(And occasionally the AHj will spend hours looking for none existent leaks.) It's usually cheaper to just test in the AM, and let the temp. and pressure rise.
Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Cahill Sent: Monday, July 14, 2008 2:48 PM To: [email protected] Subject: Rough-in inspections Any AHJ's requiring 200 psi hydrostatic tests to be done during the rough-in inspection? Not really a problem with ACT ceilings. Certainly ties things up in vertical residential systems where you can't zone it. Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. 763-658-4483 763-658-4921 fax Email: [EMAIL PROTECTED] Mail: P.O. Box 69 Waverly, MN 55390 Location: 4439 Hwy 12 SW Waverly, MN 55390 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.4.10/1551 - Release Date: 7/14/2008 6:49 AM _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
