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IE_Lecture07-ed

# IE_Lecture07-ed - Lecture 7 Industrial Ergonomics(ENGR...

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Lecture 7 Industrial Ergonomics (ENGR 3460U) NOISH Lifting Guidelines Instructor: Dr Ahmad Barari Instructor: Dr. Ahmad Barari Barari- ENGR 3460U 1

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NIOSH Lifting Guidelines • Recommended Weight Limit (RWL) Recommended Weight Limit (RWL) – F comp = 770 lb 75% women have the strength – 75% women have the strength – 99% men have the strength E 4 7 kcal/min – E = 4.7 kcal/min Optimum weight adjusted for task Once Load > RWL, then injuries Barari- ENGR 3460U 2
RWL = LC x HM x VM x DM x AM x FM x CM RWL LC x HM x VM x DM x AM x FM x CM LC = Load Constant= 51 lbs •HM = Horizontal Multiplier=10/H HM Horizontal Multiplier 10/H VM = Vertical Multiplier=1 – 0.0075|V-30| DM Di t M lti li 0 82 1 8/D DM = Distance Multiplier= 0.82 + 1.8/D AM = Asymmetry Multiplier=1 – 0.0032A FM, CM from Table 4-7, 4-8 (Frequency & Coupling) Barari- ENGR 3460U 3

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H V D coordinates H, V, D coordinates Barari- ENGR 3460U 4

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COUPLING MULTIPLIER • Container greater Type V<30 V 30 Container greater than 16 (horizontal) by 12 inches high Good 1.00 1.00 F i 0 95 1 00
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IE_Lecture07-ed - Lecture 7 Industrial Ergonomics(ENGR...

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