After completing numerous BIM projects, I have gained valuable insights and experiences related to BIM modeling that I would like to share with you. Since I haven’t settled on a specific theme, let’s call this “Things You Didn’t Know About BIM Modeling.” My goal is to provide useful references for your future learning and practical application.
1. Understanding Drawings Is More Challenging Than Learning Software for Beginners
For newcomers to construction without hands-on site experience, mastering BIM software is not the biggest hurdle. The real challenge lies in reading and interpreting construction drawings. Each draftsman has a unique style, and overlapping line segments often create confusion when identifying components. This issue is especially common in China, where general draftsmen and design modelers typically work in separate organizations. Therefore, I strongly recommend beginners first focus on thoroughly learning how to read and understand drawings. This skill is essential for grasping project intent, building accurate models, and minimizing errors.
2. Recommended Modeling Order: Columns, Walls, Beams, Then Slabs
Regarding the modeling sequence, it’s best to start with columns, then walls, followed by beams, and finally slabs. From a plan view, beams usually have larger projected cross-sections than walls. Modeling beams first ensures they properly cover the walls; otherwise, wall positions can become unclear. For example, in REVIT, the architecture module is divided into two categories: architecture and structure. Using building components indiscriminately often leads to many manual joints, which can be very time-consuming.
3. BIM’s Advantages and Considerations
Traditional 2D drawings often suffer from limited integration and complex nesting issues, which BIM can significantly improve. However, learning BIM requires a solid foundation, more modeling time, and higher software costs. I suggest creating a BIM model especially when the number of construction drawings exceeds one hundred, as this approach proves more efficient for managing and integrating engineering information.
There are many aspects of BIM modeling that might be unfamiliar to you. These points are summarized from my personal experience, and I encourage everyone to leave comments so we can learn and grow together.
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