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Access Type

WSU Access

Date of Award

January 2019

Degree Type


Degree Name



Civil and Environmental Engineering

First Advisor

Mumtaz A. Usmen


This study attempts to investigate the application of DfS concept in the U.S. construction industry and focuses on fall accidents among specialty trade contractors in 2017. Further Cross-tabulation analysis was conducted to investigate the relationship between the design and characteristics of construction projects (project type, project cost, project end use, accident severity, and NAICS code). Later available practices in implementing the DfS concept was reviewed, and Pareto analyses were conducted to identify the vital few design suggestion form which the construction industry would benefit the most.

The result of this study reveals that 42.6% of fall accidents among specialty trade contractors in 2017 could have been prevented if the DfS was implemented. The result of cross-tabulation analysis demonstrates that the project type, project end use, and the NAICS (North American Industry Classification System) code have a significant relationship with design, meaning that specific projects could benefit the most with the application of DfS. It is also concluded that roofing contractors are at a higher risk of fall accidents, and installation of roof anchors for construction and future maintenance purposes is among the best practices in DfS that can minimize the risk of fall accidents.

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