Complex site logistics and installation phasing are some of many potential applications for visualization. Using graphic representation to understand time-based processes can help foresee conflicts and study potential options. 4D adds the time factor of the construction schedule to the 3D model. We can directly link each activity of a Gantt chart (generated in project management software such as Primavera or Microsoft Project) to the BIM.

These animated models represent the planned construction sequence set against time. The main purpose of a construction phasing simulation is to provide a tool that will help the construction team visualize logistical issues or inefficiencies, exposing details such as out-of-sequence work or scheduling conflicts between multiple trades, analyze "what if" scenarios and macro-level construction phasing strategies, all in order to achieve the optimization of the construction schedule.

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