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  1. johnsond8066

    Expansion forces due to freezing on a lift station

    How do you calculate the worst case condition of freezing soils against a 32" diameter basin 72" deep. Included in the 32" diameter dimension is a 24" diameter fiberglass basin with 4" of R-7/in. foam insulation. Granular backfill is required all around the basin. The hole is in granit rock...

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