IOE 333 Lecture Notes - Lecture 13: Kilogram-Force
1 Apr 2020
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Max acceptable weight of lift: work as hard as you can without straining, or without becoming unusually tired, overheated or out of breath. Defines what a person can do for an extended period of time without excessive fatigue. Assumption: low back pain and injuries are less likely to occur for lifting tasks that are judged acceptable by workers than those that are not. Action limit - musculoskeletal injury incidence and severity rates increase for some people at this limit. 3. 4 kn (350 kgf ~ 770 lbf) compression on the l5/s1 disc. 75% of females and 90% of males are capable of exerting the necessary muscle strength. Maximum permissible limit - musculoskeletal injury incidence and severity rates increase for most people at this limit. 6. 4 kn (650 kgf ~ 1430 lbf) compression on l5/s1 disc. 25% of females are capable of exerting the necessary muscle strength.
