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Article

Factors Affecting Material-Cart Handling in the Roofing Industry: Evidence for Administrative Controls

1
College of Built Environments, University of Washington, Seattle, WA 98105, USA
2
Department of Construction Management, University of Washington, Seattle, WA 98195, USA
3
Safety and Health Assessment and Research for Prevention (SHARP), Washington State Department of Labor and Industries, Olympia, WA 98501, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Paul B. Tchounwou, Nygård Clas-Håkan and Harish Chander
Int. J. Environ. Res. Public Health 2021, 18(4), 1510; https://doi.org/10.3390/ijerph18041510
Received: 10 December 2020 / Revised: 25 January 2021 / Accepted: 2 February 2021 / Published: 5 February 2021
Material-cart handling can be strenuous and lead to overexertion injuries. The aim of this study is to produce a thorough understanding of how the cart condition, tire type, physical environment-related factors, and load interact to influence the ergonomics and productivity of cart handling. Eighteen roofing carts with different conditions, tires, and loads were tested by one subject on three laboratory tracks: one L-shaped, one with ramps within constrained spaces, and one with obstacles within constrained spaces. A multiple linear regression analysis was performed to quantify the main and interaction effects of the factors of interest on the cart operations. The research findings confirm that using aged carts increases the injury risk by as much as 30.5% and decreases productivity by 35.4%. Our study also highlights the necessity of keeping an open space for cart operation; the travel distance from a cart to a ramp/obstacle should be greater than 61 cm. Finally, the results suggest the at-risk thresholds for different ramp slopes and obstacle heights, and the safe load capacities for the various working circumstances that are common on construction sites. The evidence created in this study can be translated into administrative controls for cart handling to reduce overexertion injuries and enhance performance. View Full-Text
Keywords: overexertion in pulling and pushing; material cart handling; roof construction; ergonomic risk factors; administrative control overexertion in pulling and pushing; material cart handling; roof construction; ergonomic risk factors; administrative control
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MDPI and ACS Style

Zhang, Z.; Lin, K.-Y.; Lin, J.-H. Factors Affecting Material-Cart Handling in the Roofing Industry: Evidence for Administrative Controls. Int. J. Environ. Res. Public Health 2021, 18, 1510. https://doi.org/10.3390/ijerph18041510

AMA Style

Zhang Z, Lin K-Y, Lin J-H. Factors Affecting Material-Cart Handling in the Roofing Industry: Evidence for Administrative Controls. International Journal of Environmental Research and Public Health. 2021; 18(4):1510. https://doi.org/10.3390/ijerph18041510

Chicago/Turabian Style

Zhang, Zhenyu, Ken-Yu Lin, and Jia-Hua Lin. 2021. "Factors Affecting Material-Cart Handling in the Roofing Industry: Evidence for Administrative Controls" International Journal of Environmental Research and Public Health 18, no. 4: 1510. https://doi.org/10.3390/ijerph18041510

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