The NIOSH lifting equation
ASP video lesson, 6:37. ASP Domain 3: Ergonomics
Narrated with an AI-generated voice. The script is AI-drafted from the cited rules and fact-checked against them.
Learn the revised NIOSH lifting equation: the 51 lb load constant, each U.S.-unit multiplier, the recommended weight limit and the lifting index, with worked ASP exam examples.
Included with every ASP pass, with captions, chapters and the full transcript. Every rule and number is cited on screen to its primary source.
Visualize this
- Drag the box out, down and around and watch the recommended weight limit fall.
An interactive diagram, included with every ASP pass.
What this lesson covers
In this lesson, you'll learn to: state the RWL equation and its load constant, write the horizontal, vertical, distance and asymmetric multipliers, calculate a recommended weight limit for a lift, and compute the lifting index as load divided by RWL. The recommended weight limit, RWL, starts from the load constant and is adjusted by the multipliers for lift conditions.
- Intro
- Learning objectives
- The equation
- U.S. units
- Putting it together
- Worked example 1
- Worked example, awkward lift
- Reading the result
- Which way it moves
- On the job
- Common exam traps
- Recap quiz
The video, captions and full transcript are included with every ASP pass. See passes
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