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SAE USCAR-41 2015 Edition, March 1, 2015
Ergonomic Guidelines for Carts and Dollies
Description / Abstract:
This document describes the assessment methods and physical
requirements associated with the manual handling of carts and
dollies, specific to material handling systems.
All possible designs and applications could not be anticipated in creating these guidelines. Where there are questions of adherence to this document, such as use of an "off-the shelf" design, always consult the responsible Ergonomics Department.
Force guidelines were primarily developed referencing the push/pull psychophysical Snook data contained in A Guide to Manual Materials Handling (second edition) by Mital, Nicholson and Ayoub (NY: Taylor Francis, 1997). The force guidelines accommodate 75% of female capabilities and 99% of male capabilities.
Factors that were included in the established guideline include: push / pull distances, vertical hand height, horizontal hand height, frequency and wheel / castor alignment and load rating. These factors were used to develop a conservative force guideline. The guidelines assume frequent handling of carts / dollies (handling frequency greater than once per minute) throughout a work shift. For carts that exceed the force guidelines and do not align with the assumptions utilized to determine the guidelines within the document, please contact the appropriate Ergonomic Subject Matter Expert for a deep dive ergonomic analysis. The deep dive analysis will account for the differences in the assumptions (i.e. frequency, push/pull distance, hand height, etc.).
All possible designs and applications could not be anticipated in creating these guidelines. Where there are questions of adherence to this document, such as use of an "off-the shelf" design, always consult the responsible Ergonomics Department.
Force guidelines were primarily developed referencing the push/pull psychophysical Snook data contained in A Guide to Manual Materials Handling (second edition) by Mital, Nicholson and Ayoub (NY: Taylor Francis, 1997). The force guidelines accommodate 75% of female capabilities and 99% of male capabilities.
Factors that were included in the established guideline include: push / pull distances, vertical hand height, horizontal hand height, frequency and wheel / castor alignment and load rating. These factors were used to develop a conservative force guideline. The guidelines assume frequent handling of carts / dollies (handling frequency greater than once per minute) throughout a work shift. For carts that exceed the force guidelines and do not align with the assumptions utilized to determine the guidelines within the document, please contact the appropriate Ergonomic Subject Matter Expert for a deep dive ergonomic analysis. The deep dive analysis will account for the differences in the assumptions (i.e. frequency, push/pull distance, hand height, etc.).
SAE USCAR-41 2015 Edition, March 1, 2015
Ergonomic Guidelines for Carts and Dollies