This book provides a comparison of methods in the form of tables, which can be used to make a rough pre-selection of possible soil improvement methods. The stability and serviceability of structures (ground failure, slope failure, settlement, slide safety, etc.) depend on the nature and magnitude of the forces acting and the physical properties of the ground. If the properties of the subsoil do not meet the requirements to be met, an improvement of the properties can be considered. This book describes the most common and established methods for improving the properties of the subsoil. In addition to explaining the process, it provides the requirements for using the process and information such as the maximum depths that can be improved or the strengths that can be achieved. The book is aimed primarily at students and practitioners in civil engineering, architecture, and engineering geology.