Which soil type is classified as cohesive soil that has been disturbed?

Cohesive soils are characterized by their ability to retain water and stick together due to the fine particles they contain, primarily clay. When these soils are disturbed, their properties can change, affecting their stability and strength.

Type B soil is classified as cohesive soil that has been disturbed and often consists of silty clay or clay-like materials. These soils can still retain a level of cohesion, but the disturbance can weaken their structural integrity compared to undisturbed cohesive soils. Recognizing disturbed soils is critical in construction and excavation work, as it informs engineers and workers about the potential for shifting or settling during and after operations.

In contrast, cohesive soils of other classifications, such as Type A or Type C, denote different characteristics or states of disturbance that are not aligned with the specific definition of disturbed cohesive soil. Understanding soil classifications is essential for ensuring safety and stability during construction projects.