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Re: Ice Force on Steel Water Storage Tanks

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If the icing isn't too bad (a foot of so) and the total volume of the water
is large enough you can also install an air bubbler or mixing blade to
circulate the water in the tank and prevent freeing.  This is done in some
ports, marinas etc. to suppress winter ice.  There is a Prof. C. Allen
Wortly ( I think that's the spelling) at the U of Wisconsin who is quite
knowledgeable about this.  There are also companies that make bubbler and
mixing equipment commercially.

cmd


-----Original Message-----
From: JohnOttCE(--nospam--at)aol.com <JohnOttCE(--nospam--at)aol.com>
To: seaint(--nospam--at)seaint.org <seaint(--nospam--at)seaint.org>
Date: Wednesday, March 10, 1999 9:32 PM
Subject: Re: Ice Force on Steel Water Storage Tanks


>What happens if that magic compressible material becomes saturated with
water
>and also freezes? I would imagine that you were thinking of some
material???
>that would separate the water and the steel tank, such as a waterproof
>membrane. Good luck! I have observed throughout my life that there ain't no
>free lunch.
>
>I have observed many instances in cold climate areas such as Mammoth Lakes
>many broken pipes. Fortunately none were mine. They are spectacular. The
>pressure developed by ice freezing below 26 degrees is unyeilding. (The
first
>4 degrees the ice actually shrinks and then [if there is no infiltration of
>additional water] the ice expands over the next 4 degrees. Someone stated
that
>ice broke cannon balls and I have absolutely no doubt at all.
>
>John
>
>
>