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Arrangement of Components within a Physical Space

Arrangement of Components within a Physical Space. Principles of Arranging Components Importance Frequency-of-Use Functional Sequence-of-Use Locating components in general area in work space: use (A) and (B) Arrangement of components within a general area Use (C) and (D)

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Arrangement of Components within a Physical Space

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  1. Arrangement of Components within a Physical Space • Principles of Arranging Components • Importance • Frequency-of-Use • Functional • Sequence-of-Use • Locating components in general area in work space: use (A) and (B) • Arrangement of components within a general area • Use (C) and (D) • Evidence of sequence-of-use superiority

  2. Methodologies for Arranging Components • Data Types • Basic data about human beings • Task analysis data • Environment data

  3. Methodologies for Arranging Components • Two broad classes of task-related information • Information on the use of components individually • Information on the relationships between components as they are used

  4. Methodologies for Arranging Components • Information Dealing with Components Individually • Determine frequency of use and criticality of components • Composite frequency-importance indices • Ex. Control accessibility index

  5. Methodologies for Arranging Components • Information Dealing with Relationships between Components • Links: relationships between components • Communication links • Control links • Movement links

  6. Methodologies for Arranging Components • Link Representations • Link table • Graphical Representations • Adjacency layout diagrams • Spatial Operational-Sequence Diagrams

  7. Methodologies for Arranging Components • Arranging Components • Quantitative solutions • Linear programming: optimizing utility costs • Simpler solution • Put control with highest frequency in area w/lowest error • Put control with second highest frequency in area w/second lowest error • Continue for all controls

  8. General Location of Controls and Displays • Visual Displays • Line of sight ~15º below the horizon • Critical displays should be placed within a reasonably moderate oval around normal line of sight

  9. General Location of Controls and Displays • Hand controls that require force • max pulling force exerted from 57-66 cm forward from seat reference point • Best location for cranks and levels is in front of operator

  10. General Location of Controls and Displays • Controls on panels • General guidelines (Figures 14-11 and 14-12) • Time to activate controls minimum for controls about 25º from center • Avoid imposing response-time requirements on operators in which small differences are critical

  11. General Location of Controls and Displays • Two-hand controls • Place push buttons at waist-level rather than eye-level if possible • Foot Controls • If considerable force required, place pedal well forward (toe-operated) • Forces greatest when foot angle on pedal between 15-35º from the vertical

  12. Specific Location of Controls and Displays • Guiding principles • sequence-of-use • group by function if no fixed or common sequences found • Avoid mirror imaging

  13. Spacing of Control Devices • Dependent on anthropometric factors and precision of psychomotor movements • Recommended separation (Figure 14-21)

  14. General Guidelines in Designing Individual Workplaces • Priorities: • Primary visual tasks • Primary controls interacting with primary visual tasks • Control-display relationships • Arrangement of elements in sequence of use • Convenient location of frequently-used elements • Consistent layout within system

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