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RE: buried steel pipes

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Here are some publication sources you can try at AISI and AWWA. I don't
think you will find a design guide for free on the web. The main source for
steel pipe (which I expect you may be using at such a large diameter) is
AWWA M-11. It's not the most current reference, but at least it's someplace
to start.

I don't know what sort of pressures you are dealing with, but be very
careful in considering the external loads. The failure mode for diameters
this big is likely to be buckling. It is very, very important to exercise
strict quality control to prevent excessive pipe deflection during
installation. You could also have a problem with flotation if you are
installing this through high groundwater zones.


This is the AISA link.

http://www.steel.org/publications/construction/pipe.htm

This is the AWWA link.

http://www.w972.com/water810/riw811f.htm



-----Original Message-----
From: raul marino puebla mosquera [mailto:raul_marinop(--nospam--at)yahoo.com.mx]
Sent: Tuesday, March 06, 2001 10:47 AM
To: seaint(--nospam--at)seaint.org
Subject: buried steel pipes


Dear friends

I am working in a study of buried steel pipes in order
to transport water with a longitude of 6.8 km and it 
in their journey has 4 siphons.
I need information on buried steel pipes of great
diameter 3.5 m.
If somebody knows on any place of [internet] or knows
something in this respect that could serve me it I
would be very grateful you make me to know.
Something that refers to this topic is the necessity
or not of the joins of expansion.

Thank you ahead of time for their interest in the
topic

Raul Marino


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