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Biomechanical assessment while using production tables on mast climbing work platforms.

Christopher S Pan1, Xiaopeng Ning1, Bryan Wimer1

  • 1Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505, USA.

Applied Ergonomics
|September 28, 2020
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Summary

Alternative mast climbing work platform (MCWP) designs, specifically L-shaped tables, enhance masonry worker stability and reduce trunk motion. These improved postures on MCWPs can lower injury risks for bricklayers.

Keywords:
Back injuryMast climbing work platformPostural stabilityProduction table

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Area of Science:

  • Occupational Safety and Ergonomics
  • Construction Engineering
  • Biomechanics

Background:

  • Mast climbing work platforms (MCWPs) are essential in masonry but pose ergonomic challenges.
  • Worker posture and stability are critical factors influencing injury risk during bricklaying.
  • Existing MCWP designs may not fully optimize for worker biomechanics.

Purpose of the Study:

  • To evaluate the effect of different MCWP production table designs (straight and L-shaped) on trunk motion and postural stability.
  • To compare the biomechanical impact of alternative MCWP setups against a conventional setting.
  • To identify MCWP design modifications that can enhance worker safety and performance.

Main Methods:

  • Twenty-five masonry workers performed simulated bricklaying and stepping-down tasks on an MCWP.
  • Trunk angles and postural sway parameters were measured using a conventional MCWP, straight-shaped, and L-shaped production tables.
  • Kinematic data were analyzed to quantify trunk motion and stability metrics.

Main Results:

  • The L-shaped production table significantly reduced trunk range of motion and trunk angles in all planes compared to other designs.
  • Both production table designs (straight and L-shaped) significantly decreased body sway velocity and area.
  • Production tables reduced impact sway forces during transfers and improved overall worker stability.

Conclusions:

  • The use of production tables, particularly the L-shaped design, on MCWPs significantly improves masonry worker posture and stability.
  • These design improvements on MCWPs have the potential to reduce the risk of musculoskeletal injuries in the construction industry.
  • Optimized MCWP configurations can enhance both safety and efficiency for masonry tasks.