In the field of architectural design, the choice between traditional CAD design and adopting BIM technology has sparked much debate. While traditional CAD is a well-established and reliable method, it tends to be less efficient. On the other hand, BIM significantly reduces workload and helps identify and resolve design issues early on. However, BIM adoption requires investment and is still evolving in terms of operational maturity. So, will BIM eventually replace traditional design? Let’s explore how BIM is applied during the early stages of design.
(1) Terrain Analysis
During the initial design phase, factors such as terrain, landform characteristics, surrounding environment, climate, and vegetation play critical roles in shaping design decisions. Before beginning the design, it is essential to analyze and evaluate landscape planning, environmental facilities, and pedestrian traffic through site analysis.
Traditional terrain analysis methods have limitations, including insufficient quantitative data, inability to handle large datasets, and low accuracy due to lack of advanced technology. By integrating BIM with Geographic Information System (GIS), spatial analysis of terrain features like elevation and slope can be performed rapidly and accurately. This integration provides precise data for evaluating site conditions during project planning, allowing designers to develop optimal site plans, traffic flow arrangements, and building distribution maps.
(2) Landscape Visibility Analysis
Landscape visibility analysis examines how visible a proposed building is within its surrounding environment. Key factors influencing visibility include the distribution of nearby structures and the geometric features of the building itself.
In the conceptual design phase, architects utilize BIM models to assess building visibility, identify zones with significant visual obstruction, and refine the design accordingly. This approach is particularly beneficial for renovating existing structures and designing iconic, complex buildings.
(3) Collection and Organization of Design Materials
In the early design stages, architects must manage and analyze a vast amount of project-related information. Combining BIM with Affinity—an information integration and application software developed by Trelligence in the United States—allows centralized management and classification of collected data.
This centralized system enables data to be easily accessed and verified throughout the design process. Affinity helps architects continuously check whether preliminary designs meet the client’s requirements, minimizing costly redesigns during later detailed design phases.
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