From what I hear, rammed aggregate columns like TerraPiers are the best way to solve any soft soil problem.

TerraPiers are an excellent tool to decrease settlements under foundations.  However, certain subsurface conditions, such as shallow groundwater or the presence of obstructions, can make installation of TerraPiers difficult and costly.  On the other hand, other procedures may be equally suitable and more economical, even where TerraPiers are a technically feasible option.  TerraSystems, with our experience in a variety of ground improvement techniques, can assist in the selection of a technically-effective AND cost-effective foundation solution.