Under what conditions may an asphalt base course be utilized?

Using an asphalt base course under conditions that dictate an enhanced structural support is appropriate because this type of base layer provides strength and stability to the pavement system. When vehicular traffic is expected to be heavy or when the underlying soil is not ideal, the asphalt base course can help distribute the load more effectively, preventing deformation and damage to the pavement.

This application is particularly beneficial in areas with high traffic volumes or where heavy vehicles operate frequently, as it reinforces the pavement structure, ensuring durability and longevity. An enhanced structural support allows for better performance of the overall pavement structure, improving its ability to withstand environmental stresses, including temperature variations and moisture infiltration.

While other conditions such as soil support value, traffic levels, and climate factors can affect the selection of materials used in roadway construction, they do not directly address the fundamental purpose of the asphalt base course, which is to provide a stable and robust foundation under heavier stress conditions.