Catenary sag should be approximately what percentage of the distance between rollers?

The correct percentage for catenary sag, which is the vertical offset created in a line or cable between two supports, is typically around 3% of the distance between the two rollers or support points. This is based on engineering principles that address the behavior of cables and how they sag under their own weight due to gravity.

When evaluating the distance between the support points, a 3% sag is considered a balanced approach that allows for structural integrity and operational functionality. A larger sag would increase the potential for the cable or line to interfere with machinery or operational areas, while a smaller sag could result in tension issues, compromising the cable's effectiveness and lifespan. Additionally, this percentage ensures adequate clearance and prevents excessive strain on the system, contributing to the longevity and reliability of the equipment in use. Thus, 3% is a standard recommendation within the field for maintaining optimal performance.