The Cone Penetration Test (CPT) is a geotechnical investigation method used to determine the properties of soil. It involves pushing a cone-shaped instrument into the ground at a constant rate, measuring resistance to penetration. This data helps engineers assess soil strength, stratification, and other characteristics important for construction projects. CPT provides continuous profiles of soil behavior, making it a valuable tool for site assessments. The test is often preferred over traditional methods like Standard Penetration Test (SPT) due to its efficiency and the detailed information it provides. Results from CPT can guide decisions on foundation design and site suitability.