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structural engineer

Pier and Beam Foundations


Before the use of conventional slab-on-grade or floating slabs, the pier and beam foundation was the typical foundation used to support a house. This foundation was the most economical and practical for homes. With advancements in concrete design, contractors and developers began constructing floating slabs rather than pier and beam foundations. 

Performance of a Pier and Beam Foundation

Foundation Movement - Explained

Slab on ground foundation with post tension cables

 

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

1)    Response to soil volume change (shrink, swell, or settle): Response to soil means that the 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).