When is excavation work classified as particularly hazardous?

Excavation work is classified as particularly hazardous primarily based on the depth and width of the trench, which can significantly impact the stability of the walls and increase the risk of cave-ins. A trench that is 1.0 metre wide can be particularly risky if it involves depths that are greater than usual recommendations, as it may not provide enough support or be considered stable under certain soil conditions.

In general, trenching guidelines indicate that when a trench reaches certain dimensions, such as being deeper than 1.0 metre without proper protective measures in place, it raises valid concerns about worker safety due to the potential for walls collapsing. The width of the trench adds to this complexity as it may affect the ease of ensuring a safe escape route for workers should an emergency occur. Therefore, understanding these measurements helps emphasize the need for proper protective systems and safety protocols during excavation work, making trenches that are 1.0 metre wide potentially hazardous under specific conditions.