Ways to Protect Footings From Frost According to the Michigan Building Code
Michigan is cold.The state is located by Lake Michigan, and it has extremes of temperature. The winters are dominated by the lake, which causes winds up to 70 miles per hour. Needless to say, when you are building a house in Michigan, you need to take into account the extremes of cold. This is why the Michigan Building Code has set out ways to protect footings from frost. Knowing what these regulations are will help you build a strong, weather-tight home that can endure whatever comes your way in winter.
Extending Below Grade
# The footing should not extend below the surface of the earth or grade more than 42 inches.
# The footing should not rest on any ground that is frozen, unless the ground is permanently frozen.
# If the footing is on solid rock, it will be protected from the frost, because the rock will not freeze.
# ASCE 32 refers to American Society of Civil Engineers, Design and Construction of Frost-Protected Shallow Foundations. This is a practice of building so that the footing is installed above the frost line. The method is termed FPSF, or Frost Protected Shallow Foundations. The theory is that heat from the building goes into the earth beneath the building, keeping the ground from freezing. If you build the foundation or install the footing in this manner, you will not have to protect the footing from frost, according to the Michigan Building Code.
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