Anthropometrics & Anatomy

1. Anthropometrics&Anatomy

2. Go Ergo Go Ergo Go Ergo ANTHROPOMETRICS

3. Differences Between Males & Females Knuckle Height (standing) Elbow Rest Height (standing) Hand Length/Grip Span Functional Reach Strength

6. Engineering Anthropometrics Anthropometrics The science that deals with the measurement of size, weight, and proportions of the human body. The use of body dimensions and measurements to design the system to fit the operator

7. Anthropometric Design • Design for the RANGE • Adjustable car seat, elbow rest height • Design for the EXTREME • Height – design clearance for tall people • Reach – design to be reached by short people • Design for the AVERAGE • Public seating, designed to accommodate the median of the population in use

8. Why Not Design For Average? Design Guidelines

9. Design Guidelines Why Not Design For Average? When you design for the average, you limit the most!

10. Design for Adjustability, Extremes, or Average? (North American Small Female) (North American Large Male) Design Guidelines

11. Anthropometric Data Hand Breadth Length Thickness Breadth Across Thumb Standing Standing Height Eye Height Elbow Height Ankle Height Seated Sitting Height Eye Height Elbow Height Knee Height Other Body Weight Arm Reach Foot Length Shoulder Breadth

12. Using Anthropometric Data Calculate Minimum Work Surface Height If work is to be performed at elbow rest height: MWSH = + popliteal height + shoe height adjustment + thigh clearance + thigh clearance clothing adjustment + table thickness Source: Tayyari F., and Smith, J.L., Occupational Ergonomics, Principles and Applications, 1997.

13. Standing Workstation Challenge - Before Design Guidelines

14. Standing Workstation Dimensions Design Guidelines

15. Standing Workstation Challenge - After Design Guidelines

16. Material Handling Challenge - Before Design Guidelines

17. Material Handling Dimensions Design Guidelines

18. Power ZoneThe power zone for lifting is close to the body, between mid-thigh and mid-chest height. Comparable to the strike zone in baseball, this zone is where arms and back can lift the most with the least amount of effort. Safer Lifting Zone

19. Material Handling Challenge - After Design Guidelines

20. Go Ergo Go Ergo Go Ergo ANATOMY

21. Do I have a Problem? The Tools • ErgonomicsHit List™ • Observation tool • Identify and resolve ergonomic issues

22. Fix It Wash Rag Tool/Target Practical Approach Ergonomics Find It

23. The Hands and Wrists

27. Total Physical Stress Stress from Tensile Forces Stress from Compressive Forces

28. First Dorsal Compartment Extensor Retinaculum APL EPB

30. Washrag Hit List

33. Tool/Target Hit List

36. Effect of Wrist Postures on Grip Strength

37. The Elbows

39. Elbows Out Hit List

41. Task Design Neutral Postures Torso - keep back straight Upper arm - hanging vertical Forearm - 90˚ to upper arm ç Wrist – straight, extension of the forearm Hands - palms facing each other

42. Bad Vibes Hit List

44. The Shoulders and Neck

46. Shoulder Too High/Shoulder Too Low Hit List

48. Optimal Work Zone The Optimal Work Area Work Reach Zone + Vision Arcs =

50. Comfort Zone Hit List