The full English term for BIM is Building Information Modeling, which is widely recognized in China under the same translation. The concept of BIM was first introduced by Dr. Chuck Eastman, a professor of architecture and computer science at Georgia Tech, before 1974. He defined BIM as an integrated approach that combines all geometric model data, functional requirements, and component performance into a single building model. This model encompasses all information throughout the entire lifecycle of a building project, including process details such as construction progress, construction methods, and maintenance management.
When setting requirements for BIM models in construction projects, several key aspects should be considered:
First, the depth of the BIM model should be determined based on the architectural planning and design, preliminary design, construction drawing design, preparation, and implementation phases. Different stages, such as construction handover and operation, have varying BIM requirements that must be addressed accordingly.
Second, as the project progresses, both the model content and the information it contains will gradually increase. Information from earlier stages should be carried forward to avoid redundant modeling. Specifically, for the foundational data in the previous stage’s model, updates and new details should be added or modified rather than recreated.
Third, based on the actual conditions of the project or specific BIM application requirements, real-time updates and additions should be made to the model content throughout the project lifecycle. This ensures the model remains accurate and up-to-date, while avoiding unnecessary excessive modeling.
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