At what depth of excavation is a ladder required to be provided?

A ladder is required to be provided at an excavation depth of 4 feet to ensure safety for workers entering and exiting the site. This regulation is in place to prevent falls, which can happen when workers must climb out of a trench or excavation that is deeper than their reach. At this depth, the risk of potential hazards such as collapsing walls, lack of proper egress, or other safety concerns necessitates the use of a ladder for safe access and egress. It establishes a standard practice to enhance worker safety in construction environments where excavations are prevalent.