Massachusetts 4G Hoisting License Practice Exam

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How does OSHA define a trench?

A deep underground pool for drainage

A narrow underground excavation that is deeper than it is wide

OSHA defines a trench as a narrow underground excavation that is deeper than it is wide, where the depth is greater than the width but not wider than 15 feet. This definition is crucial for safety practices on construction sites because it establishes the framework for the specific regulations and protection measures that must be followed to ensure worker safety in trenches. Excavations that meet this definition pose particular risks, including cave-ins, which are a significant danger in trenching operations. Understanding this definition helps workers and employers to recognize the potential hazards associated with trench work and to implement appropriate safety protocols, such as shoring or trench boxes, to protect employees from falling or being buried under loose soil. This underscores the importance of proper training and adherence to safety regulations in excavation work.

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A wide excavation for storage

A shallow foundation for plants

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