Craig,
How do you handle elbows or tees? I would think that in order to make
that work, the outer pipe diameter would have to be significantly
larger than the inner pipe, at best. Plus, you would have to cut the
pipe lengths so that radii of curvature would have the same center
point. It could get ugly. (or am I over-engineering again?)
At 09:41 AM 4/18/2007, you wrote:
Why not run your galvanized within a ductile iron casing. There are
pipe inserts for suspending one pipe within another (double
containment). Then you have the DIP in contact with your soil, but the
galvanized is still your dry system piping.
Craig L. Prahl, CET
Fire Protection Group
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.lg.com
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Richard
Matsuda
Sent: Wednesday, April 18, 2007 9:30 AM
To: [email protected]
Subject: Re: Underground Dry Pipe
what kind of pipe?...good question.
Okay, I'll stick my neck out...thinking outside of the box.
CPVC is not listed for dry pipe use...but why?
(1) is this for just overhead piping where the water in pipe of a
wet-pipe system will help keep the pipe from failing during a fire?
(2) or is this because air and CPVC are not compatible?
(3) or because the air will leak out thru the CPVC?
(4) some other unknown reason?
CPVC is listed for underground use...so why not use the CPVC if reason
(1) above is the only problem. I don't know why CPVC is not listed for
dry pipe systems, and I'm not the AHJ on this project...so I'm just
wondering out loud.
rick matsuda, city of dallas, bldg insp dept
>>> [EMAIL PROTECTED] 04/17/07 04:05PM >>>
I've got a outdoor amphitheatre that needs sprinkler protection. The
only option allowed to get from the controls (adjacent heated building)
to the arch on the amphitheatre is to go underground. We will be using
galvanized pipe for the dry system for the amphitheatre.
The question is what pipe should I spec for the dry underground? Can
(should) I use galvanized? Do you sleeve it? Any other suggestions?
Thanks,
Reed Roisum
Fire Protection Technician
Ulteig Engineers, Inc.
3350 38th Avenue South
Fargo, ND 58104-7079
_______________________________________________
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)
_______________________________________________
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)
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
860-535-2080
www.fpdc.com
_______________________________________________
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)
