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Ergonomics
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Applications for Ergonomics Home & Leisure ServiceOffice Manufacturing Manufac- turing
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Safety, Quality, & Efficiency
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Principles of Ergonomics
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Work in Neutral Postures Principle 1
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Maintain the “S-Curve” of the Spine
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The Neck
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Keep Elbows in and Shoulders Relaxed
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Keep Wrists in Neutral
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Summary — Neutral Postures Neck straight Shoulders relaxed Elbows at sides Wrists in neutral Back with S-curve
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Point: To work smarter, work in neutral postures Evaluate and modify: –work method –tools –workstation design
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Reduce Excessive Force Principle 2
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Point: Think of what you do. Think of ways to reduce excessive force. Thousands of ways, only some examples here.
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Keep Everything in Easy Reach Principle 3
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Reach Envelope
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Work at Proper Heights Principle 4
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Height elbow drawing Most work at elbow height (sitting or standing) Most work at elbow height (sitting or standing)
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Height elbow hi/lo drawing Exceptions: Heavy = lower Precision = higher Exceptions: Heavy = lower Precision = higher
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Reduce Excessive Motions Principle 5
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AfterBefore
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Minimize Fatigue and Static Load Principle 6
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Minimize Pressure Points Principle 7
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Provide Clearance Principle 8
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Move, Exercise, Stretch Principle 9
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Maintain a Comfortable Environment Principle 10
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Lighting and Glare
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Vibration Dampening Material
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Summary Posture Force Reach Heights Motions Static load Pressure points Clearance Stretch & exercise Environment
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Putting on Your Ergonomics Glasses
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Making Improvements
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Fix and Adjust What You Can Yourself
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Think Before You Work
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Make Ergonomics Part of Daily Worklife
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Cumulative Trauma Disorders (CTDs) “Wear and tear” that accumulates thru time
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Symptoms Soreness, pain, discomfort Numbness or burning “Pins and needles” Limited range of motion Weakness and clumsiness
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Basic Message to Everyone: If you think you may have a problem Get it checked out
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Risk Factors for CTDs Awkward Postures Force Repetitive Motions Static Load Pressure Points Vibration Temperature Extremes (Tasks)
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Risk Factors for CTDs Physical Condition Diseases and Conditions (Personal)
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Prevention Apply what you learn here
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What You Can Do Request help for any problems Be willing to try new methods Know what’s adjustable Get it checked out Exercise and keep in shape Think about off-the-job activities Learn more about ergonomics
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Activities at This Site TeamErgo Surveys Plans etc
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