What preparatory action must be taken regarding site clearing?

The requirement to remove topsoil and vegetation as a preparatory action in site clearing is crucial for several reasons. First, removing topsoil is essential to ensure that the soil used for construction work has the right properties for stability and load-bearing capacity. Topsoil often contains organic material, which can degrade over time and lead to settlement issues. By clearing this layer, contractors can assess and prepare the subsoil better, making necessary modifications to achieve proper compaction and density.

Additionally, removing vegetation is important to prevent interference with construction activities and to reduce the risk of future landscaping complications. Roots from trees and shrubs can obstruct foundation work and potentially undermine structural integrity if they decay after construction.

Thus, the process of site clearing typically involves the removal of both topsoil and vegetation to provide a clean, stable, and controlled environment for any subsequent construction efforts, ensuring the site is ready for grading, excavation, or other foundational work necessary for the construction project.