Project Description

Stone Columns, also known as aggregate piers, reinforce the soil with a grid of compacted semi-rigid columns. This method reduces the total and differential settlements. 

Presentation and key elements

What is it?

Stones columns, also known as aggregate piers, reinforce the soil with a grid of compacted semi-rigid columns. Menard uses a vibratory probe that penetrates the soft soils to the necessary depth and compacts the material incorporated. These vertical inclusions can be made of stone are installed in a grid pattern beneath the structure.

When and why use it?

Stone columns are well suited for the improvement of soft or loose soils as they create vertical inclusions with high stiffness, shear strength and draining characteristics. The result is an increased bearing capacity and a reduction of the total and differential settlements. They are particularly effective in improving slope stability and preventing liquefaction by increasing the ground’s shear strength.

💡 Menard’s tip

There are a wide variety of construction methods for stone columns: dry and wet, vibratory probes in the top or bottom of the tool, crane mounted or mast-guided system.

Stone columns techniques for soil
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