Why is soil classification critical in earthwork practices?

Soil classification plays a vital role in earthwork practices primarily because it assists in selecting appropriate construction methods. Different types of soils exhibit varying physical and chemical properties that affect their behavior during construction activities. For example, cohesive soils (such as clay) behave differently from granular soils (like sand) when it comes to compaction, drainage, and stability.

Understanding the soil type ensures that contractors can employ the right excavation techniques, equipment, and materials during the construction process. For instance, some soil types might require different compaction methods or additives to improve their stability and load-bearing capacity. By accurately classifying the soil, project managers can mitigate the risk of potential issues, such as excessive settling, instability, or water infiltration, ultimately leading to a more efficient and safe construction process.