The unconfined compression test is a laboratory procedure used to determine the compressive strength of soil or rock samples. In this test, a cylindrical specimen is placed in a testing machine and subjected to axial loading until failure occurs. The maximum load applied is recorded, allowing for the calculation of the material's strength. This test is particularly useful for assessing the properties of cohesive soils, such as clay and silt. It provides valuable information for engineering projects, including the design of foundations and the evaluation of soil stability in construction sites.