What is the minimum perpendicular space required between fixed ladder rungs and any obstruction?

The minimum perpendicular space required between fixed ladder rungs and any obstruction is 7 inches. This dimension is crucial to ensure that users can safely access and descend the ladder without encountering any obstacles that could impede their movement or cause accidents.

This requirement stems from safety guidelines established by organizations such as the Occupational Safety and Health Administration (OSHA) and the American National Standards Institute (ANSI). These standards aim to minimize the risk of injury by ensuring that ladders provide a clear path for users, allowing for comfortable foot placement and secure grasping of the rungs.

Having this 7-inch clearance helps prevent foot entrapment and provides enough space for individuals to maneuver while using the ladder. This is particularly important in various residential construction scenarios, where fixed ladders may be installed in tight or awkward spaces. Failing to adhere to this dimension could lead to unsafe conditions that compromise the safety of workers and homeowners alike.