At what depth must trench work be protected from cave-in?

Trench work must be protected from cave-ins at a depth of 5 feet because this is the minimum depth at which OSHA (Occupational Safety and Health Administration) regulations require protective measures to be implemented. At this depth, the risk of a cave-in becomes significant due to the weight of the soil and the potential for unstable conditions. The implementation of protective systems, such as trench boxes or shoring, becomes essential to ensure worker safety and prevent accidents.

There are specific standards set forth to address the hazards of trenching and excavation, and while lesser depths may pose risks, the 5-foot threshold is recognized as a critical point where protective measures must be in place. Proper safety protocols and awareness of these regulations are vital for anyone involved in excavation work.