After completing a project, managing BIM models becomes especially important. Creating a platform that integrates a 3D building materials database with a comprehensive cloud storage system encourages material manufacturers to provide standardized 3D data files. This approach offers valuable insights into construction projects by establishing a fully integrated information environment, ultimately promoting BIM adoption within the construction industry. In this article, the author highlights key aspects of effective BIM model management.
1. 3D Model File Formats
Various 3D modeling software use different file formats, each holding its own market share. These diverse formats can create challenges for BIM file exchange and circulation. For instance, popular construction modeling tools like AutoCAD, Revit, and Bentley utilize formats such as 3DS, RVT, OBJ, FBX, and IFC. The absence of a standardized data exchange format among these tools limits seamless interoperability.
To overcome this, the international organization IAI (Industry Alliance for Interoperability) introduced a unified building data integration standard based on 3D geometric information models, called the IFC (Industry Foundation Classes) format. IFC is an open data standard designed for information exchange, sharing, and comprehensive construction management. It defines objects like doors, windows, and lighting fixtures, as well as abstract concepts such as spaces and structures. By organizing data into an object database, IFC enables stakeholders using different software to generate interoperable, shareable, and integrable data throughout every project phase.
2. 3D Model Face Limits
BIM project management requires handling massive amounts of integrated information, and 3D models generally consume significant memory. To balance visual quality and system efficiency, it is crucial to standardize the number of triangular faces in each model. It is recommended to limit polygon counts to approximately 300 faces. If a manufacturer uploads a model exceeding this limit, users should reduce the face count to optimize performance.
3. Server-Side Database Planning
Combining cloud databases with mobile devices for engineering management during design, planning, and execution phases demands a well-structured data flow. This process can be divided into two key parts:
- First, establishing an engineering information database built on a MySQL architecture that connects with the project’s planning stage database.
- Second, developing database applications tailored for mobile devices that focus on cloud database information flow, security, and real-time performance.
These points summarize the essential aspects of BIM model management. Although BIM adoption started relatively late in China, it has experienced rapid growth. However, the slower development of supporting BIM tools has somewhat limited its widespread use. Nevertheless, the move towards BIM is inevitable, and the industry must be ready to embrace this transformation.
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