THE INFORMATIVE VISUALIZATION METHOD OF THE 4D CAD MODEL
Keywords:
4D CAD Model, visualization, construction planning, schedule, simulationAbstract
A novel construction schedule presentation called the 4D CAD model is able to explicitly demonstratethe construction sequence and working space in 3D visual. However, it still has some shortages and isused as a supplementary presentation. This research identifies the deficiencies of the visualization ofthe 4D CAD model and proposes improvements. The presentation abilities of the existing 4D CADmodel are analyzed and compared with the other conventional methods, namely Gantt chart, networkdiagram, and calendar. Four aspects of the visualization are addressed, namely the overview of aschedule, the duration of an activity, the relationship of an activity, and the project progress tracking.The proposed improvements employed different visual properties of 3D CAD objects such as color,line weight, and line type to represent the different activities’ performing statuses. This developmentcan enhance the visualization of the 4D CAD model and provide a more informative construction schedule.It is anticipated that the 4D CAD model with these enhancements can substitute for conventionalpresentation methods of a construction schedule
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