What means base course in road?

The base course in road construction refers to a layer of material placed between the subgrade (the natural ground) and the surface or wearing course. It provides structural support, enhances load distribution, and improves the overall durability of the road. Typically made from crushed stone, gravel, or stabilized materials, the base course is designed to withstand traffic loads and prevent deformation of the road surface. Proper installation of the base course is crucial for ensuring the longevity and performance of the roadway.