Title

A Study of One-Handed Lifting

Date

1966

Index Abstract

Not Available

Photo Quality

Complete

Report Number

AMRL TR 66-17

Creator

McConville, John T.

Hertzberg, H. T. E.

Corporate Author

Antioch College

Laboratory

Aerospace Medical Research Laboratories

Extent

26

Identifier

AD0637764

Access Rights

Distribution of this document is unlimited

Distribution Classification

1

Contract

AF 33(616)-6792

DoD Project

7184

DoD Task

718408

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Distribution Conflict

No

Abstract

The research study is intended to aid in establishing realistic criteria for size and weight of industrial packages. Size and weight, objective and subjective factors that potentially affect human weight-lifting, and proper approach to the design of industrial loads are discussed. Additional programs of investigation that would clarify other aspects of the problem are outlined. This study examined the interaction of two variables--weight and width--of one-- handled, symmetrical boxes that a sample of 30 adult males were able to lift from the floor to a table 30 inches high. No carrying was invvolved. The subject sample was chosen to be a reasonable representation by height and weight of the U. S. Air Force population. All lifts were made with the preferred hand under 'ideal' laboratory conditions. Box width was varied from 6 to 32 inches. The maximum weight of box that subjects were able to lift varied linearly, but inversely, with the width of the box. From this sample, the maximum weight that 95% of the population would be able to lift--but not necessarily carry--can be expressed by a linear equation: Y = 60 -X, were Y is the weight (in pounds) of the package to be lifted and X is the width (in inches). The numerical values of this formula provide a recommended upper limit on the design of industrial or military equipment which must be lifted under ideal conditions. If the expected conditions of use are less than ideal, or if carrying for appreciable distances is likely to be necessary, reasonable reductions in weight, or size, or both should be made by the manufacturer.

Report Availability

Full text available

Date Issued

1966-05

Provenance

RAF Centre of Aviation Medicine

Type

report

Format

1 online resource