What are the characteristics of Type A soil?

Type A soil is characterized as cohesive soil that possesses an unconfined compressive strength of 1.5 tons per square foot (tsf) or greater. This classification is significant in the context of excavation and construction work, as it indicates that the soil has a high degree of stability and can support structures and slopes adequately without undergoing failure or shifting.

The criteria for Type A soil are established based on the soil's load-bearing capacity and cohesive properties, making it suitable for various construction activities, especially where stability is crucial. By understanding Type A soil, safety professionals and workers can better assess risk levels during excavation and implement appropriate safety measures to prevent accidents.

Other types of soil discussed in the context of this question represent varying degrees of stability and cohesive strength. Type B soil, for example, has a lower strength requirement, while Type C soil is associated with even less stability. Understanding these distinctions is essential for ensuring safety on construction sites and for implementing proper protective measures during excavation activities.