What is the recommended action prior to the construction on compressible soils?

The recommended action prior to construction on compressible soils is to remove the soil. Compressible soils, such as soft clays or organic soils, can undergo significant settlement and may not provide the necessary support for structures. By removing these problematic soils and replacing them with more stable material, the risk of future settlement and structural damage can be minimized.

In practice, this process often involves excavation of the compressible material and either replacing it with engineered fill or utilizing other foundation techniques to ensure stability. This act of removal not only helps achieve a stable foundation but also enhances the overall safety and longevity of the constructed structure.

While other methods like soil compaction or stabilization can be beneficial for certain soil conditions, they are not as effective in dealing with compressible soils compared to complete removal. Covering the soil would not address the underlying issue either, as it would still be present and could lead to complications later on.