https://www.dipra.org/contact-dipra/ask-an-engineer


> On Feb 19, 2018, at 17:49, Charles Thurston <thurst...@pyebarkerfire.com> 
> wrote:
> 
> My concern with the cement lined Di. Is it not designed to have water in it 
> all the time keeping the cement lining wet? I would be concerned on a fry 
> system of the cement drying out. I know I have walked on plenty of dry dement 
> walks and gotten that white powder off it and the surface has dried out and 
> turned back to powder.
> 
> 
> 
> Best regards,
> Charles Thurston                          thurst...@pyebarkerfire.com
> MYRTLE BEACH FIRE SAFETY GROUP
> A Division of Pye-Barker Fire Safety
> 1445 Cannon Road
> Myrtle Beach, SC 29577
> (843) 916 - 8787
> (843) 839 - 3473 facsimile
> 
> 
> 
>> -----Original Message-----
>> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] 
>> On
>> Behalf Of Prahl, Craig/GVL
>> Sent: Monday, February 19, 2018 12:36 PM
>> To: sprinklerforum@lists.firesprinkler.org
>> Subject: RE: Underground Dry System Pipe Type
>> 
>> 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
> 
> 
> _______________________________________________
> 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/20180219/062e1d87/attachment.html>
_______________________________________________
Sprinklerforum mailing list
Sprinklerforum@lists.firesprinkler.org
http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org

Reply via email to