Q:

How deep is the frost line in southern Pennsylvania?

A:

Quick Answer

The average frost line depth in southern Pennsylvania is 36 inches. The frost line (also referred to as frost depth or freezing depth) is the average depth in which the ground water in soil usually freezes.

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Full Answer

Building codes in some states take into account the frost line depth because, during freezing conditions, the frost in the ground can swell upwards, causing frost heaving. Frost heaving can move the foundation of a building, which in turn damages a building's structure. It is also important to know frost line depth if digging water lines. If a water line is buried above the frost line, it could freeze.

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    How deep is the frost line in Michigan?

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    The frost line depth for most of Michigan is 42 inches. This is the depth at which groundwater present in the soil freezes. Though this is the standard depth, other factors play a part in determining the frost depth for a particular area.

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    Where is Pennsylvania located?

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