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Foundation Movement - Explained

Slab on ground foundation with post tension cables

 

Regardless to the type of foundation, there are two common reasons for foundation movement:

 

1)    Response to soil volume change (shrink, swell or settle): Response to soils means that foundation will move in the direction the supporting soils move. The simplest way to understand this is to understand that soils move in four directions: up, down, and the sides (left and right).