Free courses








The legislative information contained on this web site is my interpretation of the law based on many years in the health and safety business. A definitive interpretation can only be given by the courts. I will therefore not be held responsible for any accident/incident/prosecution arising as a consequence of anyone using any information obtained from this web site.

manual handling calculations

manula handling calculations

Out of interest, it is possible to produce calculations which show the approximate effect of holding a load either close to or far away from the body.

The twisting force on the body is a combination of force times distance and is known as torque. It may seem odd mixing up weight and distance but it is common in engineering. In the picture above on the left, a person is picking up a box at arms' length. The effect of the box weight and the weight of his upper body is shown as 2,100 ins/lbs. That's the measure of the twisting motion on his lumbar discs.

On the right hand picture the person has moved the load as close as possible to his body. The calculation is now shown as 480 ins/lbs...... virtually a quarter of the picture on the left.

Don't worry about the maths involved. It's only for illustration purposes.

Next Slide>>


site Search