NV A General Engineering Practice Questions - Nevada A General Engineering Contractor Examination Exam

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Per OSHA 29 CFR 1926.652, a protective system is required for employees in a trench that is 5 feet or deeper unless which condition exists?

The trench will be open for less than one hour The excavation is made entirely in stable rock A ladder is placed every 50 feet The contractor has a written safety program

Correct Answer:

The excavation is made entirely in stable rock

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