If ladder installed is greater than seventy (70) degrees from the horizontal, it shall have substantial and adequate landing platform for every ___________ vertical distance from each other.

If ladder installed is greater than seventy (70) degrees from the horizontal, it shall have substantial and adequate landing platform for every ___________ vertical distance from each other.

• A. 2.5 meters
• B. 4.5 meters
• C. 6 meters
• D. 9 meters

Answer: (B)

When a ladder is set at a steep angle (greater than 70 degrees from horizontal), safety rules require a landing platform after a fixed vertical rise to reduce fatigue, prevent long unbroken climbs, and provide a safe place to rest and regain balance. That fixed interval is 4.5 meters of vertical rise between landings. So after climbing 4.5 meters, there must be a substantial landing platform before continuing. The other numbers would either necessitate landings that are too frequent or too infrequent, which would not align with the standard's safety intent.

When a ladder is set at a steep angle (greater than 70 degrees from horizontal), safety rules require a landing platform after a fixed vertical rise to reduce fatigue, prevent long unbroken climbs, and provide a safe place to rest and regain balance. That fixed interval is 4.5 meters of vertical rise between landings. So after climbing 4.5 meters, there must be a substantial landing platform before continuing. The other numbers would either necessitate landings that are too frequent or too infrequent, which would not align with the standard's safety intent.