Soil mechanics is a branch of engineering that focuses on the behavior of soil under various conditions. It studies how soil interacts with structures, such as buildings and bridges, and how it responds to forces like weight and water. Understanding soil properties helps engineers design safe and stable foundations. This field combines principles from geology, physics, and engineering to analyze soil characteristics, such as strength, compressibility, and permeability. Soil mechanics is essential for construction projects, ensuring that structures can withstand environmental factors and loads without failing.