NIOSH-ed - 1 origin and 2 destination – Smallest RWL counts • Note 0 ≤ M ≤ 1 IE 327 9 Ex 4-1 Lifting Box into Car RWL or =

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IE 327 1 IE 327 Introduction to Work Design Dr. Andris Freivalds Class #6
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IE 327 3 NIOSH Lifting Guidelines Recommended Weight Limit (RWL) = SDL (Strength Design Limit) – F comp = 770 lb 75% women have the strength 99% men have the strength E = 4.7 kcal/min Optimum weight adjusted for task Once Load > RWL, then injuries ↑
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IE 327 4 RWL = LC x HM x VM x DM x AM x FM x CM LC = 51 lbs HM = 10/H VM = 1 – 0.0075|V-30| DM = 0.82 + 1.8/D AM = 1 – 0.0032A FM, CM from Table 4-7, 4-8
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IE 327 5 H, V, D coordinates Limits: 10≤H≤25 0≤V≤70 10≤D≤70 0≤A≤135
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IE 327 6
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IE 327 7 COUPLING MULTIPLIER Type V<30 V≥30 Good 1.00 1.00 Fair 0.95 1.00 Poor 0.90 0.90
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IE 327 8 APPLICATION Lifting Index ( LI) = Load/RWL Measure of relative stress Compare jobs Always two RWL calculations
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Unformatted text preview: 1) origin and 2) destination – Smallest RWL counts • Note: 0 ≤ M ≤ 1 IE 327 9 Ex. 4-1 Lifting Box into Car RWL or = 51(10/H)(1-.0075|V-30|)(.82+1.8/D) (1-.0032A)FMxCM IE 327 10 Ex. 4-1 Lifting Box into Car RWL dest = 51(10/H)(1-.0075|V-30|)(.82+1.8/D)(1-.0032A)FMxCM IE 327 11 Ex. 4-1 Lifting Box - Redesign RWL or = 51(10/H)(1-.0075|V-30|)(.82+1.8/D) (1-.0032A)FMxCM RWL dest = 51(10/H)(1-.0075|V-30|)(.82+1.8/D)(1-.0032A)FMxCM Multi-Task → Use DesignTools!!! IE 327 12 Lifting Interventions • Decrease H • Avoid twisting – Turntables – Extra step • Lift tables • Tilt tables • Hoists Effect of Multipliers - 1 Effect of Multipliers - 2 Effect of Multipliers - 3 Frequency Multiplier...
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This note was uploaded on 05/04/2010 for the course I E 327 taught by Professor Staff during the Spring '08 term at Pennsylvania State University, University Park.

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NIOSH-ed - 1 origin and 2 destination – Smallest RWL counts • Note 0 ≤ M ≤ 1 IE 327 9 Ex 4-1 Lifting Box into Car RWL or =

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