Geotechnical analysis is a branch of civil engineering that focuses on the behavior of soil, rocks, and other materials that support civil infrastructure. This analysis involves studying the properties of these materials, such as their strength, permeability, and deformation characteristics, in order to design and construct safe and efficient structures. Geotechnical analysis is used in a wide range of applications, including building foundations, retaining walls, tunnels, and dams. It plays a crucial role in ensuring the stability and durability of infrastructure projects and involves a combination of field testing, laboratory testing, and computer modeling techniques.