The whole house rests on the foundation or it will sink. What does the foundation rest on? Why doesn’t the foundation sink just as easily?

Question

I get that some foundations do have sinking issues, but how does having a foundation help? If the foundation is poured and solidifies, what stops the weight of the house from immediately sinking/tilting the foundation?

In: 2809

Answer 1

Use to pour concrete basement walls. The trench for the footings has to be on clay and below the frost line. Clay supports the wall much better than top soil.