What about tar or EPDM roofing material ( http://en.wikipedia.org/wiki/EPDM_rubber )?
Jamie Seidl Affordable Fire Protection, Inc. Project Manager P - (800) 862-7860 F - (704) 892-0157 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams - work Sent: Wednesday, April 18, 2007 9:40 AM To: [email protected] Subject: Re: Underground Dry Pipe If I recall, on one project with a sidewalk siamese where we couldn't use regular DI for the underground portion, we used schedule 40 galvanized with some kind of wrap and primer over. This might work in this situation. The drainage is still a problem. At 09:29 AM 4/18/2007, you wrote: >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) 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) _______________________________________________ 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)
