What is the minimum size of a ball that can be rejected by the side of a freight elevator car?

The minimum size of a ball that can be rejected by the side of a freight elevator car is 1 1/2 inches. This standard is based on safety regulations which aim to ensure that the dimensions of objects that could potentially pass through gaps or openings in the elevator car are carefully defined.

If an object smaller than this size were to be considered, it would be able to fit through some of the openings that might exist, such as those between doors, resulting in safety hazards. Hence, this 1 1/2 inch dimension serves as a guideline to help prevent smaller objects from causing issues during loading, unloading, or operation of the freight elevator.

In the context of practical safety measures, regulations typically set these minimum sizes to effectively mitigate risks associated with operational hazards, ensuring smooth and safe functioning of the freight elevator while preventing accidents or malfunctions caused by inadequately sized objects.