A 6-ft trench is not entirely in stable rock. Which protective-system rule controls?
Correct Answer
B) 5 ft or deeper unless an exception applies
Because the trench is deeper than 5 ft and not entirely in stable rock, cave-in protection is generally required.
Why This Is the Correct Answer
Because the trench is deeper than 5 ft and not entirely in stable rock, cave-in protection is generally required.
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