What is a BIM Completion Model? What Content Does It Include?
Although BIM technology has advanced significantly, in China, there remains a lack of comprehensive management literature on BIM completion models. Drawing from relevant information worldwide, this article explores final BIM delivery standards proposed by national building code organizations in Singapore and Australia, along with guidelines from Taiwan for drafting BIM implementation policies for owners.
Based on definitions from Singapore, Australia, and China, the author defines the As-Built Model as follows:
1. Completion models—including architectural, structural, and electromechanical components—serve as reference construction models. The completion history model is developed during the construction phase.
2. Upon building completion, consultants verify detailed designs against contractor-provided information. Contractors are responsible for ensuring that the completion model accurately reflects the actual conditions of all buildings, structures, and integrated mechanical and electrical systems. They must also provide any additional documentation and information required for construction.
3. The final completion model can be employed for space management and is maintained, updated, and modified during facility management and personnel use.
It is important to clarify a common misconception among owners who often equate the completion model with the LOD 500 stage. Domestic literature specifies that the As-Built Model should not be identified solely by the Level of Development (LOD). Instead, the refinement of the completion model should be defined separately for different component types. Meanwhile, LOD refers to the scope of information required at various stages such as design, construction, and completion. In other words, the completion model encompasses components with varying levels of detail.
Furthermore, the completion model includes both 3D models and digitized information for additional equipment. The virtual environment of the model allows users to quickly grasp spatial layouts and equipment relationships—even without specialized knowledge. Digitizing equipment data eliminates the complexities associated with paper-based documentation. Through 3D models, users can visualize data in direct correlation with their equipment. This convenient and highly accurate completion model provides effective support for ongoing operations, maintenance, management, and future expansion or modifications.
Experts agree that the main deliverables for project completion are:
1. Completion BIM Model: This includes architectural, structural, and MEP (mechanical, electrical, plumbing) BIM models, both specialized and integrated.
2. BIM Achievement Report: Documentation of BIM self-inspection and verification during project completion, along with inspection and verification reports for building, structural, and MEP completion drawings.
3. Application Manual for Building Maintenance Management: This covers guidelines for BIM design management, construction management, usage, and maintenance plans specific to residential construction projects, among other relevant documents.
That concludes our overview of what a BIM completion model is and what it includes. I hope this article has been helpful! I also encourage everyone to share insights and engage in further discussion to deepen our understanding.
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