There is no doubt that US construction safety records have been improving over the years, yet hundreds of deaths occur annually as a result of jobsite incidents. This continuing injury trend requires further understanding of the causes of safety issues as well as what magnifies safety risk. This study aims to investigate the extent of the impact of different factors on worker safety risk. The factors, namely human, site conditions, psychological, environmental, social, economic, regulatory, ergonomic, and organizational, were developed as part of recently formulated degrees of connectivity (DoC) model scenarios utilizing the risk perception of different specialists. The risk perceptions associated with the factors as provided by construction safety university professors and practicing safety engineers are explored for comparison. The Delphi method was adopted to collect the required data from both mentioned groups. The results show that the participants perceive that site condition factors create the highest impact whereas the worker economic factor adds the lowest impact. No significant difference was observed between the two groups in terms of risk perception, nor was there a clear impact of participant experience on the risk perception process and the factors under investigation. Safety planners can benefit from the study results by considering the level of impact that the factors have on worker safety. Moreover, when addressing safety on a project, both professors and engineers can contribute equally.

Decisions made before construction can affect safety on the construction site, either positively or negatively. This was observed from past research that identified the link between design decisions and fatalities. The concept of implementing design decisions that positively affect safety falls under the general concept of prevention through design (PtD), which attempts to identify and mitigate hazards early in the design process to eliminate the risks of injury or damage during construction. Prevention through design is practiced in other countries, primarily through legislation. The objective of this paper is to present the results of a survey that was conducted to identify construction industry stakeholders’ views on the concept of PtD and gauge the possibility for implementing PtD in the U.S. construction industry through either legislation or other means. Four distinct groups were surveyed: engineers, architects, contractors, and owners. Within this study, PtD was described and introduced to ...

Decisions made prior to construction impact the safety of construction workers. Past research has shown that there is a link between design decisions and fatalities. Prevention through Design (PtD) is a concept that attempts to identify and mitigate hazards early in the design process with the goal of eliminating the risks of injury to workers and/or damage to facilities during construction. PtD is a required practice in some countries, primarily because of legislation. In the United States, however, PtD is not well known by design professionals and there is opposition to its practice. The objective of this paper is to present the results of a Delphi study, in which the Delphi panel was tasked to identify: (1) the construction industry group with the most influence to generate interest in PtD in the United States, (2) the method with which that interest can be achieved, and (3) the industry group that should be targeted with that method. The Delphi panel came to a consensus that owners have the gr...

Studies show that application of the prevention through design (PtD) concept with respect to construction worker safety, although compulsory in some countries, is inconsistent throughout the United States. This paper presents a study that explored the impacts and experiences in a construction community resulting from PtD implementation to benefit those countries where PtD is predominantly absent. Informed by a comprehensive review of PtD literature and governing regulations, the researchers conducted a structured, randomized survey of the construction sector in the United Kingdom, where PtD is prevalent. Based on analyses of 228 survey responses, it is clear that PtD is viewed as a positive enhancement to design practice, project team collaboration, and safety. Those experienced in its application hold it in high regard. Obstacles to implementing PtD may be present but can be overcome. PtD provides an opportunity to change the way safety is viewed and practiced in the United States and to make it more inclusive of the entire project team, with active participation consistent with current project team roles and responsibilities. The research reveals how the construction industry can make this change and the impacts to be expected. Doing so will create a supportive and participatory safety environment throughout the design profession.