![two crane lift formula two crane lift formula](https://passwater.weebly.com/uploads/1/2/6/5/126553489/638412792.png)
The NIOSH Lifting Equation always uses a load constant (LC) of 51 pounds, which represents the maximum recommended load weight to be lifted under ideal conditions. For example jobs can be ranked by LI and a control strategy can be implemented based on a priority order of the jobs or individual lifting tasks.
#Two crane lift formula manual#
In addition, a Lifting Index (LI) is calculated to provide a relative estimate of the level of physical stress and MSD risk associated with the manual lifting tasks evaluated.
![two crane lift formula two crane lift formula](https://www.researchgate.net/profile/Yuanshan-Lin/publication/273405660/figure/fig12/AS:668442982096908@1536380634949/Two-crane-cooperative-lift-1-main-lifting-sheave-2-main-hook-3-spreader-bar-4.jpg)
Lifting Index (LI): Answers the question… “How significant is the risk?”
![two crane lift formula two crane lift formula](https://slideplayer.com/slide/9133662/27/images/16/Sample+Engineered+Lift+Plan.jpg)
The primary product of the NIOSH equation is the Recommended Weight Limit (RWL), which defines the maximum acceptable weight (load) that nearly all healthy employees could lift over the course of an 8-hour shift without increasing the risk of musculoskeletal disorders (MSD) to the lower back. Recommended Weight Limit (RWL): Answers the question… “Is this weight too heavy for the task?” The NIOSH Lifting Equation is a great way to identify ergonomic opportunities and prioritize ergonomic improvement efforts, and it also provides an objective baseline from which you can document ergonomic improvements. The NIOSH Lifting Equation is widely accepted as valid in the field of occupational ergonomics, providing occupational health and safety professionals an objective ergonomic risk assessment tool for manual material handling tasks. RWL = LC (51) x HM x VM x DM x AM x FM x CM