On level ground using skids and rollers, what percent of the weight of the load should yield the required line pull as a general rule of thumb?

In lifting and moving heavy loads on level ground using skids and rollers, a commonly accepted rule of thumb for determining the required line pull is that it should be approximately 5% of the total weight of the load. This percentage is based on factors such as friction between the load and the surface, as well as the efficiency of the rollers or skids being used.

Using skids and rollers reduces the friction encountered during movement, which is why the line pull required is relatively low compared to the weight of the load. This 5% figure effectively balances the need to overcome frictional forces while ensuring that the rigging equipment and operators maintain control during the movement. Higher percentages, such as 10% or 20%, may be applicable in conditions with increased friction or if the load is not properly aligned but aren’t generally necessary on level ground with proper equipment. Therefore, the 5% guideline is seen as the practical and effective standard for such scenarios.