4D BIM: It’s all about time Earlier Gantt chart, which was invented by Henry Lauren Gantt, an American mechanical engineer was used by AEC professionals for calculating the duration of the project. The chart was used to be utilized worldwide to plan the schedule of the project. Even after the advent of cutting edge tools such as 3D modeling software products, the focus of AEC professionals remained largely on the accurate development of design alone, but the ability to plan schedules was absolutely missing. 4D Building Information Modeling were introduced to facilitate effective scheduling. The motive behind the introduction of BIM was to enhance the planning, productivity and to have control over the project. 4th dimension ‘Time’ has boosted efficiency and with that BIM gets even better. 4D holds a tremendous set of advantages. Following are 4D BIM’s vital advantages. High quality project planning: 4D BIM has brought much needed scheduling feature in the virtual construction process. Now time can be controlled and can be managed efficiently during the real building process. Excellent coordination: Since scheduling has become easy, clash amongst various activities can be avoided and each of them can be allotted specific time. 4D BIM is also an amazing tool to keep an eye over material procurement. It keeps on updating the material procurement status. Optimum utilization of the resources: With immense planning and coordination, AEC professionals can get best from their resources as now they exactly know when and where they need to deploy all of their resources. 4D BIM utilizes all the resources optimally.