The BIM model contains extensive building information, serving as a data foundation throughout the project—from early goal setting and planning to later operation and maintenance. However, the quantity and accuracy of information vary significantly at each stage. Today, let’s explore what information the BIM model includes at each project phase.
1. Goal Setting Stage
Before starting model construction, the owner or architect must clearly define the objectives that the BIM model should achieve. A BIM model can serve various purposes, such as clash detection, schedule management, material quantity estimation, and integration with external software for structural calculations or energy analysis.
However, not every model supports all these functions by default. To create a model that fulfills these applications, goals must be established before modeling begins, and a professional BIM engineer should incorporate relevant building goals or parameters during the modeling process. The content of the BIM model should be tailored to its intended use, ensuring its practical value after completion.
2. Preliminary Design Stage
During the early architectural design phase, the BIM model presents simple quantities to roughly depict the building’s appearance. This helps owners understand the design concept, direction, and overall spatial relationships. The model at this stage can also support related analyses, such as building performance evaluation and landscape simulation.
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The core idea behind BIM is to minimize information gaps during project handoffs. By importing BIM models early in planning and design, their utilization is maximized, allowing each stage to build upon the previous one. At the conceptual design stage, models focus on expressing the main concept and have relatively low accuracy requirements, as long as they effectively represent the building’s form.
3. Detailed Design Stage
Following conceptual design, architects refine the model by detailing building components. This enables the generation of architectural drawings that include the surrounding landscape, interior spaces, structural elements, and mechanical and electrical systems. Unlike traditional methods, 2D drawings are now derived directly from 3D models, eliminating the need for redrawing.
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4. Construction and Production Stage
Construction drawings are a crucial part of the architectural design process. Once approved by regulatory authorities, these drawings—including master plans, floor elevations, sections, detailed views, structural and equipment drawings—serve as the basis for construction.
At this stage, the BIM model focuses on providing detailed building information such as component dimensions and relative positions. This helps on-site personnel accurately assemble components. Additionally, the model supports automatic project and regulatory reviews, cost estimation, prefabrication simulation, and interior design presentations for pre-sale units.
5. Operation and Maintenance Phase
After project completion, the BIM model reaches a level of detail sufficient for simulating operational conditions and supporting building maintenance. It can connect with sensor technology for equipment and asset management, simulate evacuation routes, monitor building usage, and assist in renovation planning.
Parameters added during this phase should align with the application goals and operational methods established during the planning stage.
That concludes our overview of what information the BIM model includes at each project stage. We hope this article has been helpful!
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