The BIM software community is vast and continuously growing. But what exactly can BIM offer us? Why is it capable of transforming the construction industry? What does a BIM model truly represent, and what types of needs can it fulfill? These questions cannot be answered solely by software usage.
In the United States, where BIM originated, several industry standards exist for BIM content. Among them, the National BIM Standard (NBIMS) is widely recognized and promoted. This standard defines BIM from the perspective of BIM models: “BIM models are digital representations of the physical and functional characteristics of building projects. They serve as the foundation for all reliable decisions throughout the entire lifecycle of a facility. At different stages of a project, various participants collaborate by inserting, extracting, updating, and modifying information within the BIM model.”
The BIM model is the core application of BIM technology. Based on the definition above, BIM is more than just a collection of software tools. It encompasses two key aspects.
First is the Building Information Model itself, a digital product created using digital technology and provided to construction projects. This model combines both the physical and functional characteristics of a project. While it shares similarities with traditional 3D models, it also has distinct differences. The physical characteristics include geometric details such as building shapes, spatial relationships between components, dimensions, coordinates, and physical properties like component density or heat transfer coefficients. It also includes construction-related data such as materials and their properties.
Functional characteristics, on the other hand, cover information unique to BIM models, including pricing, service life, installation instructions, construction guidelines, and project progress related to building components.
The second aspect of BIM technology is Building Information Modeling, which refers specifically to the modeling process. Chuck Eastman described building information modeling as a new process for project design, construction, and operation & maintenance management. BIM is not a single tool or software; rather, it is a collaborative effort to manage the construction process of projects filled with numerous uncertainties. From a project management perspective, BIM represents a full lifecycle management process that runs through the entire project, complementing the BIM model itself. The modeling process relies on the BIM model as a foundation for managing project activities effectively.
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