What is the appropriate sag for a tensioned highline stretched across an expanse of 100 feet?

The appropriate sag for a tensioned highline stretched across an expanse is typically recommended to be around 10 percent of the span for optimal performance and safety. In this case, if the span is 100 feet, a 10 percent sag would mean that the middle of the highline would dip down by approximately 10 feet. This amount of sag helps ensure that the line remains under proper tension while not excessively drooping, which could increase the risk of a fall or failure if the line is overburdened by dynamic forces or weight.

A sag of 10 percent allows for minimal movement while maintaining a strong and secure system, helping to manage the forces acting on the highline and supporting the weight of any rescue personnel or equipment. This sag ratio is widely accepted in highline operations as it balances safety with functionality, providing a manageable degree of flexibility in the system.