If soil strength is greater than .05 tsf but less than 1.5 tsf or contains angular gravel, what type of soil is it classified as?

The classification of soil types is based on their strength and composition, which are critical factors when considering the safety and stability of excavation sites. When soil strength falls between 0.05 tons per square foot (tsf) and 1.5 tsf or contains angular gravel, it is classified as Type B soil.

Type B soil is generally described as having moderate shearing strength and includes cohesive soils, such as silty clay or clay, as well as granular soils like angular gravel. These characteristics allow for better stability than other soil types but still require attention to ensure safety in excavation and construction projects. Proper understanding of soil classification helps in determining the necessary precautions and engineering methods for safe work environments.

In contrast, Type A soils have greater strength characteristics and typically do not crumble easily, while Type C soils are weaker and may include non-cohesive materials like sand. Type D soils refer to very weak soils and have characteristics that may increase the risk of cave-ins. Thus, the criteria specified in the question align precisely with the definition of Type B soil.