Hazard identification is a fundamental step in safety management that has the potential to reduce the number and severity of occupational injuries on construction sites. Researchers have identified and evaluated some of the hazards, but few have extensively discussed all of them and none have classified them by sector. The goal of this paper is to fill that research gap by considering hazard identification through an organized synthesis of the existing literature. After a comprehensive literature review, 236 publications were deemed eligible for further analysis. Eighteen safety hazards were identified and then categorized into four groups based on their physiological impacts, ranked based on frequency of citation, and classified by sector. The results revealed that falls from heights, material handling, and heavy machinery were the most frequently cited hazards and the most likely to impact all sectors. Mitigation strategies were also identified, and it was determined that most hazards can be mitigated through the use of personal protective equipment, and effective training and supervision.

Like any other asset, water pipelines deteriorate over time and become vulnerable to sudden failures, which often result in costly replacement actions. In recent years, various techniques have been developed for effective condition assessment of such pipelines. However, limited guidelines are available for selecting these technologies. The objective of this study was to fill the knowledge gap in the selection of inspection and monitoring technologies for large-diameter steel pipes (SP) and prestressed concrete cylinder pipes (PCCP) by developing a decision-support tool using analytical hierarchy process (AHP). A comprehensive condition assessment index (CAI) was developed for various inspection techniques by describing available inspection techniques, analyzing various failure modes and their causes, and developing a computer program that can select an appropriate inspection technique based on the factors that influence failures. The developed CAI is analyzed for each inspection method and a suitable technique is recommended based on impacting factors of individual pipes. This paper will help utility owners and agencies in making informed decisions regarding the selection of appropriate inspection techniques for large-diameter steel and prestressed concrete cylinder water transmission pipelines. Further studies are needed to better analyze the failure mechanism of large-diameter water mains to include prefailure indicators while estimating the CAI.