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Re: Ice Expansion Force

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>Water collects in 1" space between underside of base plate and concrete 
>foundation and freezes.
You can pretty much asume that the ice wlil expand as much as it wants. 
Frozen pipes can develop several thousand psi, about what it takes to 
rupture fittings, when the freezing is confined. It just expands enough 
to make up the difference in density between liquid and ice. Handle it 
pretty much the same as a thermal expansion problem. The only real 
difference is that with ice, the difference in density comes from a phase 
change, not a temperature change.

Christopher Wright P.E.    |"They couldn't hit an elephant from
chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)
http://www.skypoint.com/~chrisw