Underpinning

You may have an unsettling problem with your major structure. When a foundation is not properly supported by the soil system below it, one solution may be to underpin the current foundation of the structure.

What is Underpinning?

Underpinning is a process by which a structure and its foundation are extended into a lower level of soil or is widened to spread out the downward force the structure applies to the underlying soil.

Underpinning with vertical support may entail the use of micropiles or jacked piers. Each has its own benefits, but the basic idea remains the same: adding more vertical support by tying additional bracing underneath the existing foundation, at a deeper soil level with higher density.

If the foundation is not strong or stable enough to support its load, widening of the foundation may be the best solution.

What causes the need for underpinning?

In short - foundation movement is the force that causes the need for underpinning. Movement of the foundation can be caused by a number of reasons and usually shows itself in one of the following forms:

These problems can be caused by

Considerations before Underpinning a Failing Structure

Anytime foundation issues occur it can be a major issue. Be sure to get your foundation checked when you see signs of movement. Fenton can help determine if your issue is major and should require some type of underpinning or other solution or if it’s more minor settling of no real concern.

If your foundation has major concerns, our engineers can determine the true cause of the problem and give you a better idea of what is needed to fix the issue. While underpinning may be necessary, other considerations can be made like whether your soil should be pressure/permeation grouted. Make sure the job gets done right and make sure you work with a professional who has the expertise and experience to make sure your foundation remediation doesn’t turn into a major disaster. Call Fenton Rigging Shotcrete/Gunite Division.