ADEQ Wastewater Collections 2 Practice Test

The top of the ladder must extend how many inches above the top of the trench?

24 in 12 in 36 in 48 in

Correct Answer:

36 in

Explanation:

Extending the ladder at least 3 feet above the trench top gives you a solid handhold and a safe transition from the ladder to the edge. That distance is 36 inches, so 36 inches is the correct extension. Shorter extensions provide too little ladder above the edge for a secure grip, making it harder to climb out, while a longer extension (like 48 inches) would still be acceptable but isn’t needed to meet the minimum requirement.

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