Although automation has been actively and successfully used in different industries since the 1970s, its application to the construction industry is still rare or not fully exploited. In order to help provide the construction industry with an additional incentive to adopt more automation, an investigation was undertaken to assess the effects of digital fabrication (dfab) on productivity by analyzing the cost and time required for the construction of a robotically-fabricated complex concrete wall onsite. After defining the different tasks for the conventional and robotically fabricated concrete wall, data was collected from different sources and used in a simulation to describe the distribution of time and cost for the different construction scenarios. In the example, it was found that productivity is higher when the robotic construction method is used for complex walls, indicating that it is possible to obtain significant economic benefit from the use of additive dfab to construct complex structures. Further research is required to assess the social impacts of using dfab.

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The counterpart of Industry 4.0 in the AEC/FM industry is known as Construction 4.0. Its essence is the digitalization and automation of the AEC/FM industry. As robots and other technologies make their way into the different phases of the lifecycle of construction projects, the concern about the future of jobs and wages will increase. While the use of robotics has the potential to improve productivity and safety, it should not necessarily reduce total employment in the construction sector in the long run. It is expected that existing roles will evolve, and new roles will be created (e.g., in addition to designers there would be a need for employees with digital skills). Focusing on the construction phase of a robotically built concrete wall, the different roles were evaluated. From this study, it was found that there will be a time in which conventional construction and robotic technologies will coexist, leading to a higher job variability and new roles, both at the managerial and operations/execution levels. Although this study is not meant to be an exact representation of how the AEC/FM roles will change as a consequence of Construction 4.0, it opens the debate and research in this area.

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The construction industry is making a shift towards digitization and automation (known as Construction 4.0) due to the rapid growth of information and communication technologies as well as 3D printing, mechatronics, machine learning, big data, and the Internet of Things (IoT). These technologies will transform the design, planning, construction, operation and maintenance of the civil infrastructure systems, with a positive impact on the overall project time, cost, quality, and productivity. These new technologies will also make the industry more connected, and the consideration of cybersecurity of paramount importance. Although many studies have proposed frameworks and methodologies to develop such technologies, investigation of cybersecurity implications and related challenges have received very less attention. Some work has focused on security-minded BIM, but it lacks generality or does not consider an approach to determine the vulnerability of the different project participants, construction processes, and products involved during the different phases of construction projects. To address these limitations, this study a) develops a framework to identify cybersecurity risks in the construction industry, and b) assesses the vulnerability of traditional and hybrid delivery methods based on an agent based model (ABM). That is, the vulnerability of different project participants and construction entities during the different phases of the life-cycle of construction projects as a consequence of Construction 4.0. The findings from this study help to identify potential risks and provide a basis to assess the impact of interactions in a digital environment among different project participants. Future work aims to thoroughly investigate the proposed ABM approach and extend the same to other project delivery methods and information exchange networks in construction projects. IntroductionAfter a long history of under -digitization , the construction industry is making a shift towards digitization and automation due to rapidly growing information and communication technologies such as 3D printing , blockchain , and robotics. This is referred to as Construction 4.0, which is the construction industry's surrogate of Industry 4.0. The aim is to have connected systems at every stage in the life-cycle of a construction project , starting from the bidding phase to the end of life, including operation and maintenance. One of the key benefits of Construction 4.0 is the utilization of data as a result of digitization and connected systems during different life-cycle stages. Due to the nature of construction projects, large amounts of data are generated, such as competitive bidding information , design specifications , engineered calculations , intellectual property related information , pricing , profit /loss data, banking records , employee information , quality , safety , and productivity related standards and practices . In most cases, this data contains highly confidential, sensitive, or proprietary information.

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