BIM-based construction project progress simulation integrates a time dimension into the 3D BIM model, showcasing the building process through dynamic 3D animations. This approach helps optimize site layouts, detect conflicts between components, identify errors and deficiencies in the construction plan, enhance construction efficiency, support management decision-making, and improve communication among all stakeholders.
AutoDesk’s Navisworks is currently the most widely used software for construction progress simulation. The typical workflow involves converting the BIM model into a “.nwc” file compatible with Navisworks. This file is then opened in Navisworks, where tasks can be added or an MSP Project construction schedule imported. Components are linked to tasks, and time and animation sequences are assigned to simulate the construction progress.
In contrast, the construction progress simulation within engineering project management systems based on Revit uses the original Revit models directly, eliminating the need for model conversion. This allows for a more realistic representation of the project and simplifies the process by avoiding additional software installation.
Although Navisworks supports importing planned schedules from MSP Project files for simulation, it can only reflect the planned progress rather than the actual on-site progress. To address this limitation, BIM-based engineering project management systems simultaneously track both actual and planned progress during simulation. Components are evaluated against actual progress, with completed elements outlined in red to visually distinguish them. This dual display of planned and actual progress provides a more accurate and informative simulation experience.
However, there are trade-offs. Navisworks uses lightweight converted models for smoother simulation performance, while BIM-based systems relying on original Revit models may experience reduced simulation smoothness when handling large, complex models.
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