Today, the editor of BIM Building Training Network will guide you through the general process of BIM modeling in a clear, step-by-step format.
The BIM modeling workflow is as follows:
Start BIM modeling → Establish floor lines and grids → Import construction drawing documents → Create components such as columns, walls, beams, and slabs → Add elements like doors, windows, and stairs → Incorporate balconies, rain shelters, and railings → Generate 3D models → Complete BIM modeling
During the modeling process, it is important to carefully review the original drawings for any omissions. When establishing components, unclear or incomplete information must be clarified, often requiring on-site measurements. Taking practical, methodical steps and maintaining thorough documentation throughout will greatly support the overall workflow and decision-making.
The completion model integrates all information gathered throughout the construction process, including on-site modifications and acceptance changes. It is essential to have a comprehensive understanding of the building components from start to finish. For cases where information is incomplete, on-site measurements and testing can fill in the gaps. However, because many elements undergo multiple phases, it is often challenging to determine the original precise dimensions, material types, or initial errors. Therefore, the completion model is best developed by continuously tracking progress from the beginning of the project and organizing data into corresponding components as the work advances.
The completed model can store vast amounts of information, but different projects require different types of data. Basic model information such as dimensions, floor levels, area, and volume should be planned in terms of how it will be presented. For information that needs to be defined or manually entered—like item type, appearance, cost estimates, contractors, responsible personnel, and nameplate details—it is crucial to establish the project framework early on. Organizing these records from the start prevents unnecessary work later, such as searching, measuring, or verifying data repeatedly.
Especially during tight project deadlines, frequent staff changes, insufficient handovers, and lack of systematic data collection can lead to inefficiencies. The earlier these organizational measures are put in place, the less redundant checking will be needed down the line.
Before beginning the modeling work, thoroughly study the engineering database and maintain consistent records of replicable standards. Define the grouping, classification, naming conventions, and storage strategies for the entire project. These preparations will significantly facilitate the BIM modeling process and improve overall project management.
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