The Iranian construction industry has long been criticized for being inefficient. It has been claimed that 80 percent of all content within the construction process is the same for all projects and there are therefore huge opportunities for improvements. The project manager is essential for the successful delivery of construction projects. The purpose of this paper is to analysis how BIM (Building Information Modelling) can be utilized by project managers as a good tool to simulate project condition to avoid redundant works and waste of time and cost. It was concluded that project managers generally have little knowledge concerning BIM, which makes it hard for them to see its applications. The study revealed that BIM can help project managers in the task of delivering successful projects. BIM a better basis for decisions is provided in comparison with traditional projects.