When the editor first encountered the term “Pseudo BIM,” I was quite confused. So, what exactly is “Pseudo BIM”? How does it differ from true BIM?
Definition of “Pseudo BIM”:
Due to various reasons such as lack of skills, insufficient resources, or the desire to reuse existing information, some companies continue to use traditional methods to produce project data. Only when requested by clients do they add a BIM “shell” on top of this information. In other words, they create a 3D model after the fact—based on traditional drawings, detailed lists, specifications, and so on—through further processing.
This approach naturally leads to increased costs, longer project timelines, frustration, and complexity. It is unlikely that all information can be fully integrated into the model. Moreover, this fragmented process often causes conflicts between future drawings, schedules, and models. These conflicts tend to generate misunderstandings, delays, change orders, budget overruns, and disputes.
Therefore, this so-called “Pseudo BIM” cannot genuinely solve the problems associated with traditional methods.
It is important to understand that true BIM cannot be achieved simply by applying traditional methods. Instead, it requires a fundamentally different way of working—an alternative approach that, when adopted by everyone involved in the project, offers significant benefits to all.
So, what is true BIM? What can BIM do?
True BIM involves creating a digital, virtual 3D building composed of virtual objects that correspond to actual physical components. Each building component in the 3D model acts as a “container” holding all relevant information about that component.
In this virtual 3D environment, users can view the building from any angle, gaining a clear understanding of its appearance and how various components coordinate and connect. The software can automatically detect clashes between objects. By clicking on any object, users can access all associated information.
This data can also be queried or extracted for other purposes, such as project planning or material estimation scheduling (4D BIM), cost management (5D BIM), detailed analysis of structural or energy performance (6D BIM), or operations and maintenance information (7D BIM). In essence, by defining each object once, multiple stakeholders can use this information for a variety of future applications.
Importantly, BIM is not about generating documents; rather, drawings and schedules are exported from the model for record-keeping purposes only. The real value lies in the model itself, not the files. All outputs are generated automatically from a single setup, without manual effort. Because all information derives from the same electronic database, everything stays coordinated and consistent. Any modification made to the model automatically updates all corresponding views.
When comparing traditional methods with true BIM, it is clear that BIM significantly improves efficiency, reducing both costs and time. 3D models are easier to understand for everyone involved and enhance design collaboration, thereby minimizing misunderstandings, delays, change orders, budget overruns, and conflicts.
In the construction industry, the most widely used BIM modeling software is Autodesk Revit. Using Revit for modeling and clash detection, combined with Navisworks and LUMION for creating immersive 3D walkthroughs, allows the entire building design to be viewed intuitively.
The practical application of BIM saves considerable time and manpower in engineering projects and enhances overall project execution. Currently, leading domestic construction companies have established dedicated BIM teams and developed corresponding BIM application standards to further promote this technology.
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