Quote:
Originally Posted by Knightwing
Does anyone know if there have ever been problems of the frozen river expanding and having a negative effect on the foundations of buildings along the river?
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The river never freezes solid. When it does freeze over, then the ice builds up underneath , and the pressure build, and builds, the ice buckles a bit, then with a sharp crack and a ripping sound the sheet will fracture and one part thrust under the other. Scared the begeezes out of me the first time I heard it. You can hear it go down the river sometimes.
Chicago is great.
The negitive effect may come when the river is drained into the undergound tunnel systems, and then soaks the soil. There was a lot of concern about this back in '92.