Which of the following is necessary for trench safety?

Stabilizing the sides of a trench is essential for trench safety because it helps to prevent cave-ins, which can lead to serious injuries or fatalities. Trenches deeper than five feet must have effective protective systems in place to ensure the safety of workers. These protective systems can include sloping, shoring, or shielding the walls of the trench to maintain their integrity and stability.

Properly stabilizing the sides of a trench reduces the risk of soil collapse, ensuring that workers can safely enter and work within the trench. This safety measure aligns with Occupational Safety and Health Administration (OSHA) guidelines, which emphasize the importance of trench safety in construction environments. By focusing on stabilization, contractors can protect their crew and adhere to safety regulations.