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Underpinning Retrofit

We Specialize in Foundation Underpinning Pads Installations in Los Angeles | Orange | Ventura

California Foundation Works is #1 when it comes to installing underpinning support pads in Los Angeles, Orange and Ventura Counties.

Our installation department is certified to carry out installations for all the different types of foundations out there. In case your are wondering, a foundation underpinning pads is pretty much a concrete pad that is installed underneath the footing of your foundation to add structural support to a specific area.

These underpinning pads are extremely efficient when it comes to strengthening a specific are without replacing the entire foundation. As you already know, there can be significant earth movement or soil erosion which can cause damage to the foundation and the installation of underpinning pads are a wonderful and more cost effective solution than replacing the entire foundation.

In construction, underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons.

California Foundation Works offers solid solutions for settlement problems due to unstable soils and shifting foundations.

Underpinning of foundation support and column support provides vertical support and stabilization of the existing structure. Many foundations rest on soils relatively near to the surface; soils that are very susceptible to breakdown and other conditions brought by nature. When foundations or columns are placed in problem soils or subjected to extreme moisture conditions or lack of proper drainage, they can become unstable.

Other benefits include stabilization of soils near or around excavations close to building foundations to prevent undermining of footings. When correctly designed and installed underpinning provides support for the structure along with eliminating future settlement.

Causes of Settlement:
• Inadequate Footings
• Improper Soil Compaction
• Damaged and Leaking Underground Utilities
• Decaying of Organic Material
• Extreme Hydration or Evaporation of Soils

Major foundation underpinning is typically done in the A-B slot method. For example every other 5' section of the foundation is underpinned (A), and subsequently the other 5' sections (B) are underpinned. This method is used to eliminate or minimize the need for shoring.

Underpinning is accomplished by extending the foundation in depth or in breadth so it either rests on a more supportive soil stratum or distributes its load across a greater area.

Underpinning pads are generally used when the loads from the foundations need to be transferred to stable soils at considerable depths. Underpinning pads may either be augured or driven steel cased, and are normally between 12-36 square feet.

Each foundation underpinning retrofit is a unique situation and has to be designed by a professional structural engineer.

Contact California Foundation Works for a Free Estimate & Inspection today!


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