ASU ACC231 Exam 2 Practice

Which soil condition generally produces the greatest risk of trench-wall collapse?

Dense well-graded gravel above the water table Previously disturbed soil with seepage Cemented soil that can be excavated vertically Sound stable rock

Correct Answer:

Previously disturbed soil with seepage

Explanation:

Previously disturbed soil with water seepage has reduced strength and is more prone to sloughing or collapse than dense undisturbed material or stable rock.

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