Drawing inspiration from the Building SMART Alliance (BSA) in the United States, BIM is based on a classification framework tailored to the characteristics of the domestic engineering and construction industry. The main functions of BIM can be summarized as follows:
(1) BIM Model Maintenance
Establishing and maintaining a BIM model aligned with project construction progress involves using a BIM platform to eliminate information silos. This process consolidates all construction project data from various participants and integrates it into a 3D model, making it easily accessible to stakeholders throughout the project’s lifecycle. Currently, the industry mainly uses a “distributed” BIM modeling approach—covering design, construction, scheduling, cost, manufacturing, operation, and more—to develop BIM models that fit the specific conditions and objectives of engineering projects.
Typically, design, construction, and operation units create BIM models independently based on their respective scopes of work, which are later synthesized according to unified standards. Additionally, owners may hire independent BIM consulting service providers to oversee the unified planning, maintenance, and management of the entire BIM application, ensuring accuracy, security, and timeliness of the model information.
(2) Visual Design
Architects have traditionally relied on CAD platforms using plans, elevations, and sections to present design results. This method often leads to fragmented information, especially in complex projects with tight schedules, increasing the risk of errors. BIM introduces 3D visualization tools that allow architects to see exactly what they are designing, facilitating three-dimensional thinking and design completion.
This also empowers owners and end-users by breaking down technical barriers, bridging communication gaps with designers, and enabling them to access project information directly and in real-time.
(3) Collaborative Design
Traditionally, “collaborative design” was limited by CAD platforms, which primarily describe graphics without integrating additional information, causing poor data correlation across disciplines. BIM transforms collaboration from simple file referencing to a fully integrated process.
As a digital and network-enabled design approach, BIM allows designers from different locations and specialties to collaborate in real time. Beyond the design phase, collaboration can extend throughout the building’s entire lifecycle, significantly enhancing overall project outcomes.
(4) Performance-Based Analysis
Using BIM technology, architects embed extensive building information—such as geometry, material properties, and component attributes—into virtual building models during design. When imported into specialized analysis software, these BIM models enable automated performance evaluations that once required extensive manual data input during the CAD era.
This automation reduces work cycles, improves design quality, and optimizes services provided to owners.
(5) Quantity Statistics
As a comprehensive engineering database, BIM models provide precise quantity data essential for cost management. Computers can quickly analyze various components based on this data, greatly reducing manual, error-prone calculations and ensuring consistency between quantity information and design documents.
Accurate quantity statistics derived from BIM support cost estimation, scheme comparisons, early-stage design cost analysis, pre-construction budgeting, and final settlement after project completion.
(6) Pipeline Integration
With growing building scale and complexity, the demand for integrated mechanical and electrical pipeline design has increased among designers, builders, and owners alike. In the CAD era, design firms often produced separate drawings for different specialties, which were manually stacked to identify conflicts—an inefficient and error-prone process.
BIM technology enables the creation of integrated models across specialties, allowing designers to detect collisions and conflicts in a virtual 3D environment quickly. This improves efficiency and quality by eliminating potential clashes before construction begins, reducing change orders, minimizing delays, and controlling costs.
(7) Construction Progress Simulation
While Gantt charts remain a common scheduling tool in construction management, their visualization capabilities are limited and often fail to clearly represent progress or complex, dynamic relationships.
By linking BIM with construction schedules, spatial and temporal information merge into a visual 4D model that intuitively and accurately reflects the entire construction process. This integration helps shorten construction periods, reduce costs, and improve quality.
Furthermore, 4D BIM models provide advantages during bidding and tendering by enabling evaluators to quickly assess a bidder’s construction planning, balance in construction sequencing, and overall project feasibility, thereby facilitating a more effective evaluation of construction experience and capability.
That concludes today’s overview of the primary functions of BIM. Stay tuned for more insights tomorrow.
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