"How do soil mechanics principles influence the design and construction of civil engineering structures? Explore concepts such as soil properties, soil compaction, and bearing capacity. Discuss the significance of soil testing methods, including standard penetration tests and plate load tests, in assessing soil behavior. Additionally, examine the role of soil stabilization techniques, such as compaction, grouting, and soil reinforcement, in improving the stability and durability of foundations and embankments. Provide examples of real$-$world applications where soil mechanics principles are essential for the successful completion of civil engineering projects."