September 8, 2013
A motion is a movement or exertion made by a major joint or body link. From the perspective of preventing musculoskeletal disorders, the concern is for […]
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September 8, 2013
Static load refers to sustained muscle contraction, such as the fatigue and pain of writer’s cramp from holding a pencil for a long period of time. […]
September 8, 2013
Common standards* (Most items apply to sustained work) Maximum two-handed lift (with vertical travel distance) 20 lbs Maximum two-handed carry (no vertical travel distance) 30 lbs […]
September 8, 2013
The Lifting Guideline* incorporates a number of key variables in assessing the risk of injury associated with lifting. It provides a more useful approach than single-weight […]
September 8, 2013
Biomechanical models are mathematical predictive equations that can be used in this manner to estimate loads on the human body. These models can be complex, including the […]
September 8, 2013
(in development) Who says that good ergonomics has to cost a lot? Here are 50 useful techniques that you can apply at little or no expense […]
September 8, 2013
Common dimensions Concept of 5th and 95th percentile It is conventional to refer to the 5th percentile (short) female and the 95th percentile (tall) male to […]
September 8, 2013
Posture is characterized by measuring the angular relationship between various body links and a fixed frame of reference, usually another intuitive major body segment. The unit of […]
September 8, 2013
Click here for a downloadable pdf copy of this page. Plant 1: 500% ROI in one year This example involved a machine shop of 60 employees where […]
September 6, 2013
Too large Non-functional Principles affected Posture Force Fatigue Pressure points Clearance Related pages Hand tools Triggers Orientation Background The primary interface (and often the only interface) […]
September 6, 2013
Lifting and handling Principles affected Posture Force Height Related pages Material handling Carts Lifter-transporters Lift trucks Hoists Background Spools (or reels or coils) of wire, cables, […]
September 6, 2013
Overhead reach Principles affected Posture Reach Height Motions Related pages Material handling Hoists Dumpers Workstations Platforms Background Parts hoppers provide an efficient technique for feeding materials […]
September 6, 2013
Heavy, hard to hold, hard to maneuver Principles affected Force Related pages Material handling Dumpers Fork trucks Lifter-transporters Background There are two interrelated issues: (1) moving […]
September 6, 2013
“Walkie” lift truck Principles affected Posture Force Height Related pages Material handling Lifts Lifter/transporters Carts Background Lift trucks constitute one of the most common examples of […]
September 6, 2013
Standard hoist Principles affected Force Related pages Material handling Slides Manipulator arms Background Hoists are one of the traditional techniques for picking up heavy loads. However, […]
September 6, 2013
Lifting heavy wood pallet High, hard-to-reach stack of pallets Principles affected Force Height Related pages Material handling Lifts Background The standard wooden pallets used throughout industry […]
September 6, 2013
Heavy work shoveling materials by hand Bending to scoop out materials by hand Principles affected Posture Force Motions Related pages Material handling Tilters Lifts Containers Hopper […]
September 6, 2013
Before: Extreme bending, slow After: Tilters, easier and faster Principles affected Posture Force Reach Height Related pages An alternative is to useContainers with drop down sides in […]