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Is that too heavy to lift? This might help. Some of
the tasks performed at work, such as lifting,
reaching and repetitive movements, can strain our bodies. In some situations, these ordinary
tasks can result in injuries. Using the following lift calculator can help you assess the
risk associated with a particular lifting task. Remember, there is no such thing as completely
‘safe’ manual handling. However, by establishing some simple guidelines you can greatly reduce
the risk of injury in your workplace.
Click here
for the full lifting calculator instruction sheet.
Lifting Calculator Table
This is the estimated percent of the population who would find the work demands for this
task acceptable. (The greater the percent the lower the risk.)
≥ 75% is a good benchmark to reduce risk. For a mixed workforce, use the women’s result
as a guideline. Please keep in mind there is no right answer or wrong solution. A good
result is one that offers the most practical, cost effectiveand highest degree of control
possible.
The chart below illustrates how weight affects this particular task.
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Percentage breakdown for different weights.
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90% |
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75% |
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50% |
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25% |
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10% |
| Men |
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10 |
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10 |
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10 |
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10 |
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10 |
| Women |
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10 |
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10 |
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10 |
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10 |
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10 |
Design Goal: The resulting weight listed below is the optimum
weight for 75% of the workforce to perform this task with the parameters entered above.
Weight in pounds 75% of the workforce
can safely lift for this lifting task: |
The information contained on this web page (illustrations, instructions and principles)
is based on published research.* And, to the best of our knowledge, is current. Use this tool
as only a part of your comprehensive ergonomic evaluation. No attempt has been made to
interpret any referenced codes, standards or regulations. Please refer to the appropriate
code, standard or regulation-making authority for interpretation or clarification.
*Snook, S. H. and Ciriello, V. M., "The design of manual handling tasks: revised
tables of maximum acceptable weights and forces," Ergonomics, 1991 Sept. 34(9).
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