The Proctor Test is a laboratory procedure used to determine the optimal moisture content and maximum dry density of soil. This test helps engineers understand how soil behaves under different moisture conditions, which is crucial for construction projects. It involves compacting soil samples at various moisture levels and measuring their density. There are two main types of the Proctor Test: the Standard Proctor Test and the Modified Proctor Test. The Standard Proctor Test uses a specific compaction energy, while the Modified Proctor Test uses a higher energy level. Both tests are essential for ensuring soil stability in civil engineering and construction.