Page 18 - Trench and Excavation

Chapter 2 Review Questions

1. What are the two factors that hold soil together?

2. List and describe four of the ways that soil fails causing trenches and excavations to
collapse.

3. List and describe four of the cave-in warning signs.

4. Describe soil that is classified as Type A.

5. Describe soil that is classified as Type B.

6. Describe soil that is classified as Type C.

7. What are the manual tests for cohesive strength?

8. List the visual observation tests.

Trench & Excavation
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Page 18