$454$: $\_\_\_*****////$various soil types affect the stability of structures? Discuss the principles underlying soil mechanics and their applications in civil engineering. Explain the factors influencing soil compaction and methods to achieve optimal compaction. What are the key differences between cohesive and granular soils, and how do they impact foundation design? Explore the concept of soil bearing capacity and its significance in construction projects. Describe the process of soil stabilization and its role in preventing foundation failure.