What percentage of the perimeter of a personnel platform must contain grab rails for occupants?

The requirement that 100% of the perimeter of a personnel platform must contain grab rails is based on safety standards aimed at protecting individuals working at heights. Having grab rails around the entire perimeter ensures that every occupant has a reliable means of support to hold onto while working or moving around the platform. This is crucial because it helps prevent falls, which can lead to serious injuries or fatalities.

Safety regulations are typically designed to eliminate hazards and minimize risk. By requiring that all sides of the platform are equipped with grab rails, the design fosters a safer working environment where every worker can maintain balance and stability, especially when maneuvering or if there are sudden movements of the platform.

In the context of your options, lower percentages such as 50%, 75%, or 25% would not provide the same level of overall safety, as they would leave certain areas of the platform unprotected, thereby increasing the potential for accidents. Hence, requiring 100% coverage is essential for comprehensive safety compliance in personnel platform design.