Ergonomic interventions for the reduction of low back stress in framing carpenters in the home building industry

Details

• Personal Author:
  Kelaher D ; Lipscomb H ; Mirka GA ; Monroe M ; Nay T
• Description:
  Framing carpenters in the residential sector of the construction industry have exposure to many of the documented risk factors for low back disorders. On-site exposure data were collected from a sample of residential framing carpentry subcontractors and these were summarized using the continuous assessment of back stress (CABS) methodology. From these analyses those tasks placing the greatest stress on the low back were identified and prototype interventions were developed that reduced exposures to the specific risk factors. These prototypes were then evaluated in the field and their effects on the low back stress and productivity were quantified. The results of this analysis for three of these prototypes (a pneumatic wall lift, an extension handle for a pneumatic nail gun and a vertical lumber handling system) are presented in this paper. The pneumatic wall lift reduced peak spine compression by 63% and had mixed effects on productivity depending on the characteristics of the wall being erected. The extension handle for the pneumatic nail gun had a marked decrease in the average spine compression (73%) and also had mixed effects on the productivity depending on the characteristics of the support structures under the subflooring. The vertical lumber handling system created significant reductions in both the peak (70%) and average (32%) spine compression forces as well as a significant improvement in productivity (increase of up to 77%). Several of these interventions had positive effects in other body regions (primarily shoulder loading) but these were not quantified in the rigorous way that the low back stress was evaluated. Finally, subjective assessments by the workers varied across the interventions and were heavily weighted by their effects on productivity. Relevance to industry: Engineering controls are the most effective methods for controlling work-related musculoskeletal disorders. This study evaluates the effectiveness of a set of engineering controls for the prevention of back injury/illness in framing carpenters. [Description provided by NIOSH]
• Subjects:
  Construction Industry Engineering Environmental Exposure Ergonomics Musculoskeletal Diseases Musculoskeletal System Occupational Health Risk Assessment Risk Factors Safety
• Keywords:
  Author Keywords: Construction Back Injuries Construction Construction Industry Construction Workers Engineering Controls Exposure Levels Low Back Disorders MSD Musculoskeletal System Musculoskeletal System Disorders Nail Guns Pneumatic Equipment Pneumatic Tools Risk Assessment Risk Factors

  More +
• ISSN:
  0169-8141
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  North Carolina ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  397-409
• Volume:
  31
• Issue:
  6
• NIOSHTIC Number:
  nn:20048014
• Citation:
  Int J Ind Ergon 2003 Jun; 31(6):397-409
• Contact Point Address:
  Gary A. Mirkaa,; The Ergonomics Laboratory, Department of Industrial Engineering, North Carolina State University, Box 7906, Raleigh, NC 27695-7906, USA
• Email:
  mirka@eos.ncsu.edu
• Federal Fiscal Year:
  2003
• Performing Organization:
  North Carolina State University, Raleigh, North Carolina 27695-7906
• Peer Reviewed:
  True
• Start Date:
  19960930
• Source Full Name:
  International Journal of Industrial Ergonomics
• End Date:
  20000630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e13b9d63425056a5cbf76b886b6fc0a57bceff16aa75a35ab2803ae089ac1c5eafb5c080e50f1a5865f25e06c20086258861732e738ef02a3c9c5a2be87664b3
• Download URL:
  https://stacks.cdc.gov/view/cdc/202905/cdc_202905_DS1.pdf
• File Type:
  [PDF - 459.12 KB ]