Subpart P uses two different depths for two different duties. Which pairing is right?
Correct Answer
B) Egress at 4 feet under 1926.651; a protective system at 5 feet under 1926.652
Section 1926.651(c)(2) puts a ladder, stairway or ramp in trenches "4 feet (1.22 m) or more in depth". Section 1926.652(a)(1)(ii) excuses a protective system only where the excavation is "less than 5 feet (1.52m) in depth" and a competent person finds no cave-in indication. A 4-and-a-half-foot trench therefore needs a ladder and may not need shoring.
Why This Is the Correct Answer
Section 1926.651(c)(2) puts a ladder, stairway or ramp in trenches "4 feet (1.22 m) or more in depth". Section 1926.652(a)(1)(ii) excuses a protective system only where the excavation is "less than 5 feet (1.52m) in depth" and a competent person finds no cave-in indication. A 4-and-a-half-foot trench therefore needs a ladder and may not need shoring.
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