The BIM completion model represents a comprehensive digital representation of a project. When the model reaches this stage, it usually indicates that the project is nearing completion. But is it enough to simply compare the subtle differences between the site and the model before handing it over? What should you pay attention to before delivering the BIM completion model? Based on my personal experience, here are some key considerations:
1. Consistency in Material Colors
Ensure that the colors of materials imported into the model closely match those on the actual site. This consistency speeds up on-site verification and improves accuracy, reducing the need for verification personnel to manually confirm component parameters during inspections.
2. Conduct Verification Floor by Floor
When verifying the BIM completion model on-site, it’s advisable to work in two-floor units. If the same errors appear in the same location on both floors, document these in the remarks so that similar errors throughout the building can be addressed promptly.
3. Handling Obstructions During Inspection
If building components obstruct the view, assess whether a visual check is possible. For example, if ceilings are exposed or components are movable, inspections can continue. However, avoid forcing checks in areas that are difficult or unsafe to access, such as elevator shafts. In cases where the BIM completion model cannot be verified on-site or areas pose hazards, overlaying completion drawings onto the BIM model can help confirm whether the model aligns with the final drawings.
4. Utilizing API Programs for Verification
Developing API programs tailored to BIM completion model verification and modification needs can automate some manual tasks. This approach simplifies the verification and modification process, enhances efficiency, and minimizes human errors associated with manual work.
5. Planning Verification and Modification Over Time
Creating, verifying, and modifying BIM completion models takes time. While these models are comprehensive, it’s possible to check completed parts progressively, either by verifying finished sections in the model or on-site as they become available. Waiting until the entire project or BIM model is complete to identify all discrepancies is unnecessary. Dividing the verification scope across multiple days can reduce overall verification time and limit the extent of modifications needed at once.
6. Managing Verification Time Constraints Due to On-Site Decoration
On-site decoration work can limit the time available for BIM model verification. Once decoration begins, it may obstruct components, making verification difficult or impossible in some areas. Therefore, plan the number of inspectors and model modification personnel based on the available inspection days and the extent of differences between the model and the site. Organizing inspection and modification tasks by team and area ensures that the BIM completion model can be thoroughly reviewed within limited time frames.
In summary, these are important points to consider before delivering a BIM completion model. I hope this guidance offers useful insights. For more knowledge on BIM, consider following courses such as BIM Engineer, BIM Technical Manager, and BIM Project Director, among others.
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