How do I calculate how deep the foundation needs to be?
I need to put in a foundation, but I am not sure how deep it needs to be. The frost could be about 3 feet deep. Since I am also considering the wide foundation and not the very deep style, I think I can go down a bit less than 3 feet, but I am not sure how to calculate it to ensure it will support the house and not be a problem with the frost.
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