Since the pipe is running underground, is PVC or CPVC acceptable? Those are
already used for underground piping for free-standing FDC's.Just trying to
think outside the box.rick
On Monday, February 19, 2018 8:06 PM, Bruce Verhei <bver...@comcast.net>
wrote:
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>
>>
>> _________________________________________________________________
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