Final answer:
OSHA requires that workers be protected from cave-ins in excavations deeper than 5 feet by using shoring, trench boxes, or sloping the excavation sides.
Step-by-step explanation:
According to the Occupational Safety and Health Administration (OSHA), if an excavation is deeper than 5 feet (1.5 meters), it is required that workers be protected from cave-ins by shoring, trench boxes, or by shaping the sides of the excavation to minimize the hazard. This regulation is in place to ensure the safety of workers who may be at risk of excavation collapses, which could lead to serious injuries or fatalities.
According to OSHA, if an excavation is deeper than 5 feet, workers must be protected from cave-ins. The excavation may need to be as much as 15 diameters deep for better safety.
According to OSHA, if an excavation is deeper than 5 feet, it is required that workers be protected from cave-ins by shoring, trench boxes, or by shaping the sides of the excavation to minimize the hazard. However, newer work suggests that the excavation should be as much as 15 diameters deep to ensure better safety.