Describe the different soil types.

Description should include the following:

• Stable rock
• Type A­—cohesive soils with an unconfined compressive strength of 1.5 tons per square foot (tsf) or greater, such as clay, silty clay, sandy clay
• Type B—cohesive soils with unconfined compressive strength greater than .5 tsf but less than 1.5 tsf
• Type C— cohesive soils with unconfined compressive strength .5 tsf or lower

Teacher Resource:

• OSHA 1926 Subpart P App. A Soil Classification Links to an external site.

Process/Skill Questions:

• What are the sloping recommendations for each soil type?
• What potential hazards are associated with each of the soil types?