Manual handling guidelines: using liberty mutual tables

Liberty Mutual has updated the manual material handling tables originally published by Snook in 1978, and by Snook and Ciriello in 1991. The new “Liberty Mutual Manual Materials Handling Tables” provide both the male and female population percentages capable of performing manual material handling tasks without over exertion, rather than maximum acceptable weights and forces. This manual material handling analysis tool is based on the same “Liberty Mutual Manual Materials Handling Tables” and can be used to perform ergonomic assessments of lifting, lowering, pushing, pulling, and carrying tasks with the primary goal of supporting ergonomic design interventions.