How far can you dig below the bottom edge of the safety box in a trench?

The correct answer is 2 feet because OSHA regulations specify that you should not excavate below the bottom edge of the trench box by more than 2 feet. This guideline is established to ensure safety in trenching operations. The safety box or trench box is designed to provide stability and protection against cave-ins, which are a significant hazard in trenching environments. If excavation extends beyond this distance, the risk of instability increases, potentially compromising the effectiveness of the protective system.

This guideline helps maintain a safe working environment for personnel in and around the trench. It is crucial for construction professionals to adhere to these standards to minimize hazards associated with trench work.