What is the maximum lift ratio of breaking strength when lifting people?

The maximum lift ratio of breaking strength when lifting people is set to ensure safety and minimize risk during operations. A ratio of 1/10 signifies that for any lifting operation involving personnel, the breaking strength of the lifting equipment should be at least ten times greater than the weight of the person being lifted. This standard ensures that there is a substantial safety margin to account for dynamic loads, potential shock loads, and other unforeseen factors that might affect the integrity of the lifting system.

Using a ratio of 1/10 helps address various considerations in lifting operations, such as the possibility of sudden jerks, equipment wear over time, and variations in load distributions. By adhering to this guideline, safety professionals can reduce the chances of equipment failure and create a safer work environment for those being lifted and for those working around them. This is critical in millwright rigging and lifting practices, where maintaining high safety standards is paramount.

While ratios such as 1/5, 1/15, and 1/20 may seem appealing, they do not provide the same level of safety cushioning demanded for lifters' well-being. Hence, the 1/10 ratio is seen as the appropriate balance between operational demands and safety requirements.