712_12 CH 11 Workstation Design

712_12 CH 11 Workstation Design - 29/02/2012 Chapter 11...

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29/02/2012 1 Chapter 11 Workstation Design Konz & Johnson 2004 Copyright (c) 2012 P. Neumann, BSc, MSc, LicEng, PhD, LEL, Eur.Erg – This teaching material is not for resale or commercial use. Note that at ribution errors and missing acknowledgements may exist in this material; for which the author apologises MAIN CONCERNS FOR WORKSTATION DESIGN? MAIN CONCERNS FOR WORKSTATION DESIGN? •Posture Force •Force •Repetition •Duration •Vibration •Environment (light. Noise, temperature) •Task Suitability Setting Dimensions Lathe Example: This is how the lathe operator should look! Helander 2006 Setting Dimensions – What population? Let the small person reach Let the large person fit – Exclude what %? – What context? Doors vs. Workstation Konz & Johnson 2004 One size fits all Multiple sizes Adjustability Worst Case Best Case F 13.10 Multiple Level Tables
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29/02/2012 2 Setting Dimensions Chengalur et al.2004 – Kodak ergo book Avoid Static Loading • Increases BP • HR “Variability” • Standing • Sitting • Poor work heights • Head (10% BW) • Arms (5% Body Weight) Konz & Johnson 2004 >> ‘Optimum Working Height’? • Relevant Factors ‘Optimum Working Height’? - Task Demands! - precision - visual demands - force required - direction of force Operator Characteristics - Height -etc. Work Height • 50mm below elbow • ‘Optimum’ depends on task too – lower for power, higher for precision • Relative to operator (elbow) • Below elbow • Same for sit/stand • ‘work’ height, not ‘table’ height ‘Power zone’ VDT workstations (is its own topic) Konz & Johnson 2004
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29/02/2012 3 Work Height Solutions • Change machine/table heights – figure 13.10 • Lift tables; tilt tables, rotary tables • Adjust elbow height (move the operator) • Adjust the product – e.g. figure 13.11, 13.12 Konz & Johnson 2004 F 13.11 Reduce Back Stress! F 13.12
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712_12 CH 11 Workstation Design - 29/02/2012 Chapter 11...

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