Manual Material Handling

An operator performs the following tasks as shown below for an entire $8-$hour

shift.

$$ Lift $8$ boxes from the ground

$$ Carry them to a cart located $10$ ft$.$ away.

$$ After the cart is loaded with $8$ boxes, push it to a packing station located

$30$ ft$.$ away.

Operator Lifting, Carrying, and Pushing

Use the psychophysical tables to determine if these tasks are within the

recommended guidelines. The following information is given:

$$ Weight of boxes $($lb$)$: $30$

$$ Initial force to push cart $($lb$)$: $35$

$$ Sustained force to push cart $($lb$)$: $22$

$$ Number of times pushing operation is performed in a day: $12$ per $8$hr

$$ The boxes have optimally designed cutouts

$$ There is no twisting involved in the lift

Operator Lifting, Carrying, and Pushing

Use the psychophysical tables to determine if these tasks are within the recommended guidelines. The following information is given:

$-$ Weight of boxes $($lb$)$: $30$

$-$ Initial force to push cart $($lb$)$: $35$

$-$ Sustained force to push cart $($Ib$)$: $22$

$-$ Number of times pushing operation is performed in a day: $12$ per $8$ hr

$-$ The boxes have optimally designed cutouts

$-$ There is no twisting involved in the lift