Building Information Modelling - which was already presented by Van Nederveen and Tolman ( 1992), though the original BIM concept can date back to 1970s (Eastman et al. Among the tools for supporting advanced design planning include data-rich models, e.g. It is constantly introduced to new tools and infrastructures that improve its practices. The information and communication technology (ICT) revolution has affected many aspects of our lives today, and the construction industry has been no exception. Further works in computer industry is required to make these technologies more affordable. Nevertheless, the study shows the investment in new hardware and software, and resistant against adoption of new technologies are main obstacles of its wide adoption. The simulation of on-site tasks and perception of architectural spaces in a 1:1 scale are assets unique to VR application in AEC practices. It also resulted that an experimental method of clash detection via simulation, could actually be practical. Although the participants of the study were from a wide range of disciplines, they could find benefits of the technology in their practice. The results of the feedbacks from the experiment confirmed the supposed benefits of a VR collaboration method. A group of AEC professionals involved in a project were invited to take part in the experiment, utilizing their actual project BIM models. A case study of VR integrated collaboration workflow serves as an example of how firms can overcome the challenge of benefiting this new technology. The authors collaborated with a software company to evaluate some of their advanced VR software features, such as simulation of an on-site task. This paper investigates the application of a VR based workflow in a real project. As consumer VR tools have recently been available in the market, little research has been done on their actual employment in architecture, engineering and construction (AEC) practices. Simulation of on-site task can address a number of issues during construction, such as feasibility of operations. The virtual presence of collaborators in a VR environment, eliminates the need of their physical presence. Virtual Reality as the most immersive medium for visualizing a model, has the promise to become a regular part of construction industry. Another problem with conventional collaboration methods such as BIM-Big room, is the need of physical presence of participants in a room. Visualization on mediums such as computer screens, lack some degrees of immersion which may prevent the full utilization of the model. This relies mainly on the visualization of a BIM model, which can appear on different mediums. A successful project delivery based on building information modeling (BIM) methods is interdependent on an efficient collaboration.
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