Download - Final presentations bxs113430 attempt_2014-05-08-10-05-30_office chair redesign final - sutherland
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The Office ChairRedesign presentation
Bryon Sutherland
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Design Principles: Good
Function• 80/20 Rule• Accessibility• Affordance• Flexibility-Usability
Tradeoff• Constraint• Normal Distribution• Convergence
Aesthetics• Aesthetic-Usability Effect• Color• Performance versus
Preference
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Design Principles: BadFunction• Affordance• Mapping• Modularity• Segmentation: difficult to
assemble• Weight: chairs are heavy• Surplus: most functions
rarely used• Feedback: no feedback for
bad posture
Aesthetics• Color in the real world• Contour bias• Design by committee• Stickiness• MAYA• von Restorff Effect• Curvature• Dynamics
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Iteration 1, the Exclamation PointEye catchingUnstable seatSeems to defy physicsSelf-orienting (sort of)
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Iteration 1, problems
• Lead ball is – Heavy (40 lbs)– Expensive– Poisonous– Likely to damage floors
• Chair needs a constraint– Falling backwards very easy
• Welded a flange on rear• No height adjustment
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Design alternatives
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Final design, Iconoclast
• Removes lead ball issues• Provides backwards constraint• Falls to rest position• No need to self-orient• Keeps freedom in 300°• Adjustable• Modular
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Iconoclast
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Design principles appliedMAYAContour biasColorHip-waist ratiovon Restorff effectCurvatureDynamicsMappingDesign by dictatorSegmentationWeightModularityFeedback loopForm follows functionIterationNormal distributionPrototyping
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Hierarchy of Needs
Office chairs• There are many different
office chairs with varying qualities.
• The best chairs allow the user to ignore the chair and get work done.
• The worst chairs need constant adjustment and draw the user’s attention away from work.
Iconoclast chair• Not a functional chair for
many in population.• Targeted users can
express themselves in new ways with colors and materials.
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