How high can the foundation bear?

It can probably withstand the wall of 1.8- 1.9 meters.

The height of the fence is generally suggested to be between 1.8m and1.9m. In fact, the fence can protect the courtyard, but it is not particularly good if the fence is too high or too low. So the maximum bearing wall of the foundation like 70 is 1.8- 1.9 meters.

Foundation refers to the soil or rock mass that directly bears the load of buildings and structures. Foundation soil is divided into bearing layer and substratum, and bearing layer refers to the soil layer directly bearing the building load under the foundation.