A narrow excavation made below the surface of the ground is known as what if its depth is usually greater than the width and width does not exceed 15 feet?

A narrow excavation made below the surface of the ground, characterized by a depth that is typically greater than its width and a width that does not exceed 15 feet, is termed a trench. This definition aligns with OSHA standards that outline specific dimensions for various types of excavations. Trenches are often used for utility installations and other purposes where deep but narrow channels are required in the ground.

The significance of defining a trench accurately is essential for safety regulations, as trenches pose specific hazards, such as the risk of cave-ins. Understanding this terminology also helps ensure compliance with safety protocols designed to protect workers from these dangers. Other terms, like excavation, refer more broadly to any digging activities, while a mine shaft implies a much different construction intended for accessing subterranean resources.