Because of the occurrence of severe and large magnitude earthquakes each year, earthquake-prone countries suffer considerable financial damages and loss of life. Teaching essential safety measures will lead to a generation that can perform basic procedures during an earthquake, which is an essential and effective solution in preventing the loss of life in this natural disaster. In recent years, Virtual Reality (VR) technology has been a tool used to educate people on safety matters. This paper evaluates the effect of education and premonition on the incorrect decision-making of residents under the stressful conditions of an earthquake. For this purpose, a virtual model has been designed and modeled based on a proposed classroom in a school in the city of Tehran to simulate a virtual learning experience. In contrast, the classroom represents a realistic method of learning. Accordingly, each educational scenario, presented in reality and the virtual model, respectively, was conducted on a statistical sample of 20 students within the range of 20 to 25 years of age. Among the mentioned sample, the first group of 10 students was taught safety measures in a physical classroom. The second group of 10 students participated in a virtual classroom. Evaluation tests on safety measures against earthquakes were distributed after two weeks. Two self-reporting tests of Depression, Anxiety, Stress Scale (DASS) and Beck Anxiety Inventory (BAI) tests were assigned to the second group to evaluate the effect of foresight under two different scenarios. The results indicate that teaching through VR technology yields a higher performance level than the in-person education approach. Additionally, the ability to detect earthquakes ahead is an influential factor in controlling anxiety and determining the right decisions should the event occur.
1 November 2021 in Journal of Construction Engineering and Management
Cranes are one of the most critical and expensive pieces of construction industry equipment requiring intense safety considerations. Lifting crews should attempt to develop an effective lift plan to improve the operation’s safety and reduce the risks of potential accidents. Although various systems are developed to enhance lifting operations’ safety, most cannot evaluate the entire lifting process in an interactive visual environment. This paper contributes to the body of knowledge by presenting a crane simulator system developed in the virtual reality (VR) environment integrated with a database of comprehensive lift studies and a detailed crane path planning system. This interactive system evaluates the lift operation quantitatively in real time in terms of its safety and practicability for the entire operation (entire lift path). The developed system can be employed in practice by crane operators and lift engineers for various objectives, including gaining hands-on experience before the actual operation, enhancing engineered lift planning, increasing workplace awareness, and evaluating and mitigating lift-related risks. The proposed framework is validated through two scenarios in a modular construction project in Alberta, Canada.