Soil mechanics is a branch of geotechnical engineering that focuses on the properties and behavior of soil, particularly in relation to the construction of structures on or in the ground. This field of study involves understanding how soil behaves under various loading conditions, such as compression, shear, and lateral pressure, and how it can affect the stability and performance of structures like buildings, bridges, and retaining walls. Soil mechanics also involves the study of soil composition, classification, and permeability, as well as the design and implementation of appropriate foundation systems to support structures effectively. The findings from soil mechanics research can help engineers and designers make informed decisions about the use of soil in construction projects to ensure the safety and longevity of the built environment.