Constructability is a major factor that determines to a far extent the success or failure of construction projects. Constructability problems may severely limit the construction performance. The depiction of these problems before the beginning of the construction would tremendously reduce the cost and the duration of the project. This paper first presents impacts and causes of poor constructability. Then, the paper illustrates different areas that need to be considered for construction knowledge/experience input. The paper also presents different available strategies and concepts, as well as different solution models for constructability improvement. Finally, the paper proposes a Virtual Construction Environment (VCE) model for constructability improvement. The model will enable the user to better visualize the construction process and to develop a better understanding of the project prior to actual construction. Through user-interactive virtual construction sessions, the user will be able to construct and criticize the proposed 3D-model of the facility in order to depict constructability problems.

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