For two-story houses, natural foundation and shallow foundation can be generally used, and the buried depth of foundation is related to the following factors:

1, buried depth of bearing stratum of selected foundation;

2, the top surface of the foundation buried depth should be greater than 50cm；;

3. If there is permafrost, the top surface of foundation should be buried under permafrost.

For masonry strip foundation, the foundation height is related to the width of the foundation bottom, and the width is related to the bearing capacity of the foundation. When the foundation is wide, in order to solve the problem of rigid angle, it is necessary to put more groups, so that the foundation will be higher and the buried depth will be deeper.

The firmness of a house is not proportional to its depth.