4D BIM adds a new dimension (time) to BIM Models, it enables a sequence of events to be depicted visually on a time line that has been populated by a BIM Models schedules often used in project management.
Complex site logistics and installation phasing are some of many potential applications for visualization. Graphic representations, created to understand time-based processes, helps foresee conflicts and study potential solutions. 4D adds the time factor of the construction schedule to the BIM Models. 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. The simulation exposes details such as out-of-sequence work, scheduling conflicts between multiple trades, “what if” scenarios, and macro-level construction phasing strategies – all in order to achieve the optimization of the construction schedule.
