Which method is OSHA's requirement for protecting workers from cave-ins in trenches deeper than 5 feet?

OSHA requires that trenches deeper than 5 feet must be protected against cave-ins using specific protective systems. Among these, shoring stands out as a critical method. Shoring involves the installation of supports to prevent soil movement and protect workers inside the trench. This system is designed to hold up the walls of a trench and significantly reduce the risk of collapse.

In the context of trench safety, shoring is a proactive measure that directly addresses the hazards posed by unstable soil conditions. It provides robust, engineered support to protect workers from potential cave-ins, which can occur due to a variety of factors, including soil types and weather conditions. The requirement for shoring in deeper trenches reflects the commitment to maintaining safe work environments in construction, where such risks are prevalent.

While other methods like bracing may also be employed, shoring is specifically highlighted in OSHA regulations as necessary for deeper trenches to ensure worker safety. This focus on shoring underscores the importance of preventing cave-ins, which are a leading cause of fatalities in trenching operations.