What is a common method for determining the safe working load for manila rope?

The calculation of safe working load for manila rope is typically based on its diameter. Specifically, to determine the safe working load, you multiply the diameter of the rope in inches by 60. This formula is widely accepted in various industrial and safety guidelines, helping ensure that the rope used can safely handle the specified load without risking failure or accidents.

This method is essential for maintaining safety standards in rigging and lifting operations, as the load limits are crucial for preventing overloading and potential hazards. The emphasis on diameter recognizes that thicker ropes can bear more weight, while the multiplication factor provides a practical means of quantifying that capacity in a way that can be easily applied in real-world settings.