Dont you worry about the inevitable chunks of cement becoming a problem. Roland
Roland Huggins, PE - Senior VP Engineering American Fire Sprinkler Assn. Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> Fire Sprinklers Saves Lives > On Feb 19, 2018, at 9:35 AM, Prahl, Craig/GVL <craig.pr...@ch2m.com> wrote: > > Cement lined ductile iron. If you use standard DI, and a standard > atmospheric sourced air compressor you can have rust and scaling buildup with > ambient air inside pipe in contact with cooler ground temps. > > How are you going to slope underground pipe back to an aboveground valve > room? Basement level valve room? > > > Craig L. Prahl > Fire Protection Group Lead/SME > Direct - 864.920.7540 > Fax - 864.920.7129 > Direct Extension 77540 > CH2M is now Jacobs. > 200 Verdae Blvd. > Greenville, SC 29607 > craig.pr...@ch2m.com > http://www.jacobs.com > > -----Original Message----- > From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] > On Behalf Of Reed A. Roisum, SET > Sent: Monday, February 19, 2018 12:11 PM > To: sprinklerforum@lists.firesprinkler.org > Subject: Underground Dry System Pipe Type [EXTERNAL] > > I asked a similar question a number of years ago and it appears as though the > consensus at that time was that dry-pipe system underground pipe should be > ductile iron. We have an application where the dry-pipe system leaves the > valve room and goes underground and then extends above ground. Is ductile > iron the best option for the underground portion? We are able to slope to > drain back to the valve room. > > Thank you. > > Reed Roisum > > > Reed A. Roisum, SET | Karges-Faulconbridge, Inc. | Senior Fire Protection > Designer | Fargo, ND | direct: 701.552.9903 | mobile: 701.388.1352 | > KFIengineers.com<http://www.kfiengineers.com> > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please visit http://www.symanteccloud.com > ______________________________________________________________________ > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.firesprinkler.org/private.cgi/sprinklerforum-firesprinkler.org/attachments/20180219/ab1fd556/attachment.html> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.firesprinkler.org/private.cgi/sprinklerforum-firesprinkler.org/attachments/20180219/a31ea507/attachment.html> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
