Which types of soil are included in Type C classification?

The classification of Type C soils is particularly important for excavator operators and construction professionals because it pertains to the stability and safety of excavation sites. Type C soils are characterized as granular soils, which include gravel and sand. These types of soils typically have a low cohesion and are often saturated, making them prone to instability when wet. The lack of cohesive strength in granular soils means that they can easily shift or collapse under loading, particularly when disturbed.

Understanding that Type C soils include granular materials helps professionals recognize the risks associated with excavating in these conditions. This classification informs decisions on shoring, protective systems, and safety protocols. Proper training and awareness about the characteristics of Type C soils can greatly enhance an operator's ability to maintain a safe working environment in excavation sites.

The other classifications mentioned do not fall under Type C. Cohesive soils with higher strength, fissured soils, and stable rock are classified differently due to their distinct physical properties and behaviors under load. This distinction is critical in planning and executing safe excavation projects.