A Review on Visualization of Construction Planning and Scheduling using 4 D Cad Modeling

This study presents on visualization of construction planning and scheduling using 4D CAD Modeling. Planning of construction activities is an important factor for development of construction industry. There are various tools available for planning of regular projects but complicated projects requires more accuracy in planning in order to save both time and money. Contractors and suppliers try to finish the project within schedule time of completion without any cost overruns. For that, they adopt various planning methodology. Still there is a vast difference between planning and actual site execution. This is mainly due to ineffective planning & visualization. Therefore, efficient visualization & planning of construction activities is required for better cost control and avoid time overruns. 4D CAD modeling is the better tool for visualization and planning of construction activities. In this paper applicability of 4D CAD tool for planning, visualization, monitoring of various important construction activities like RCC elements of frame structure and benefits of 4D CAD modeling are studied. 4D Models link components in 3D CAD models with activities from the design, procurement, and construction schedules. The resulting 4D production model of a project allows project stakeholders to view the planned construction of a facility over time on the screen and to review a 3D CAD model for any day, week, or month of the project. Use of 4D Model contributed in time saving and ultimately cost of construction by reducing the delay. 4D models help to improve construction plans as compared to traditional planning tools.