Be careful here. Know what the temperatures will be both in the
ground where the pipe runs and where something like a hydrant comes
up out of the ground. PVC strength decreases rapidly with
temperature. There might also be daily temperature swings larger
than at more typical installations. Connections may be where you may
have the problems. BTW, SS hardware rots out DI. Check the technical
papers at www.ebaa.com/engineering.htm# for more information. The FM
approved HDPE is probably the best, but again pay attention to how
you are connecting it to something else and what the protection
should be for those parts.
Allan Seidel
St. Louis, MO
On Sep 27, 2008, at 10:30 AM, Scott A. Futrell wrote:
Research HDPE. Probably more cost effective for long runs as well
as corrosion resistant and long life. Driscopipe. FM approved.
Scott Futrell
C: (612) 759-5556
W: (763) 425-1001
[EMAIL PROTECTED]
-----------------------------------------------
Sent from a handheld, please excuse any misspelled words.
-----Original Message-----
From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
To: "AFSA Forum" <[email protected]>
Sent: 9/27/08 10:04 AM
Subject: Re: which pipe is right for underground bury in very hot
soil?
Suggest C-900 PVC pipe, CL 150 or 200. Ductile iron push-on or MJ
fittings, with SS hardware that in turn is coated with non-oxide
grease. ALL ferrous joints then enveloped with seamless
polyethylene sleeves and heavily taped at each end. 75 years?
Who knows, but we've had success with these practices with very hot
soils in SoCal, in areas that were experiencing blowouts from
corrosion.
Steve L.
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: ... .... <[EMAIL PROTECTED]>
Date: Sat, 27 Sep 2008 02:21:20
To: <[email protected]>
Subject: which pipe is right for underground bury in very hot soil?
Underground Question:
we have got
soil that is alkaline hot.
and hot temperatures too
in a desert with too few
days below 100 F.
what we have is
miles of underground to install around
this campus. and cost savings is
not one of the issues.
longevity of service is.
would ductile iron protected with tar or PE wrapper
be preferred
to simply PVC?
or is another pipe option,
a better bet on
reaching 75 years?
service life desired: 75 years
diameter: 8 inch
depth of bury 3+ feet
scot deal
excelsior fire engineering
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