SC Water And Sewer Plants Practice Questions - South Carolina Water And Sewer Plants Contractor Examination Exam

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Under OSHA 1926.652, employees in an excavation generally must be protected from cave-ins by a protective system when the excavation is how deep, unless it is entirely in stable rock?

2 feet or greater 4 feet or greater 5 feet or greater 6 feet or greater

Correct Answer:

5 feet or greater

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