How to choose the depth of building foundation? Must be safe and economical!

When selecting the foundation depth of a building, the foundation should be placed on a stable soil layer 0: 5m below the surface as far as possible on the premise of ensuring the safety and reliability of the building. This can not only meet the needs of foundation stability and deformation, but also avoid construction difficulties and the increase of project cost. There are many factors affecting the foundation depth, including engineering factors, geological factors and other factors.

technical condition

The purpose of the building, the type of structure, the magnitude and nature of the load and the foundation depth of adjacent buildings will all affect the foundation depth.

Geological factors

The engineering geological properties and hydrogeological conditions of the soil in the foundation are also the key factors affecting the foundation depth.

Other factors

Factors such as frost heave and thaw settlement of foundation soil can not be ignored, and should be considered comprehensively when selecting foundation depth.

Deep foundation and shallow foundation

The buried depth of foundation is greater than 4m or equal to 4m, which is called deep foundation. Shallow foundation less than 4m. When choosing, we must comprehensively consider various factors to ensure that the foundation is safe and economical!