Richard, Usually I find there is something with the structure or trades that helps make that decision for me when laying out. If I have to make it under X beam at point A, and over that roof drain at point B, I can put elevations on the drawing so that the pipe will avoid those obstructions. Section 8.16.2.3.1 thru 8.16.2.3.2 of NFPA 13 2007 gives the requirements of NFPA 13. I would try to allow as much flexibility in the installation while meeting those minimum pitch. This works out great when you have lots of room and in a perfectly level building, however when it's crammed, it takes good communication with a good fitter (who in turn to communicates with the other trades), about critical height locations.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Richard Lindner Sent: Tuesday, June 23, 2009 12:41 PM To: sprinklerforum Subject: Sloping pipe in dry pipe systems I have searched but of course can not find anything that seems to answer my question.. In the real world, how much do you slope the pipe in a dry pipe system. Say you have a 100 foot run, what would you look to be the total drop over that run. 2", 3", use 1/16"/ft??? Looking for your experience when trying to layout out a dry pipe system. Thanks, Richard _______________________________________________ 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)
