Factors determining workers' pace while conducting continuous sequential lifting, carrying, and lowering tasks

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

To plan a new manual material handling work process, it is necessary to predict the times required to complete each task. Current time prediction models lack validity when the handled object's mass exceeds 2 kg. In this study, we investigated the effect of workplace design parameters on continuous sequential lifting, carrying, and lowering of boxes weighing from 2 kg to 14 kg. Both laboratory and field experiments were conducted. Results revealed that the box's weight and the lifting and lowering heights influenced the tasks' times. Further, the time to perform a task was influenced by the performance of other tasks in the same work process. New time prediction models were developed using the laboratory experiment data. Our models were found to be more accurate on average than the Maynard Operation Sequence Technique (MOST) and Methods Time Measurement (MTM-1) by 42% and 20%, respectively, for predicting the times of real workers at an actual workplace.

Original languageEnglish
Pages (from-to)61-70
Number of pages10
JournalApplied Ergonomics
Volume67
DOIs
StatePublished - 1 Feb 2018

Keywords

  • Manual material handling
  • Time prediction models
  • Workplace design

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)

Fingerprint

Dive into the research topics of 'Factors determining workers' pace while conducting continuous sequential lifting, carrying, and lowering tasks'. Together they form a unique fingerprint.

Cite this