When setting up a ladder, the step across distance must not exceed what distance from the nearest edge of equipment?

The requirement that the step across distance must not exceed 12 inches from the nearest edge of equipment is based on safety protocols to prevent falls and ensure proper access. This guideline aims to minimize the risk of a worker reaching too far while climbing or descending a ladder. A maximum distance of 12 inches helps in maintaining a stable and secure position, as it allows for a comfortable step without overstretching, which can lead to loss of balance or falls.

By adhering to this distance, safety is prioritized when working around equipment and machinery, as workers may encounter various hazards if proper distance is not maintained. This standard is part of a broader set of safety measures outlined in EM 385-1-1, which is designed to foster a safe working environment for personnel involved in construction and other operations.