The quantity of construction projects—such as bill of quantities, quota quantities, and physical quantities—is a crucial factor in determining project costs. It also plays a vital role for construction companies and units in managing production and operations. Accurate calculation of these quantities is essential for preparing cost documents, designing construction organization plans, scheduling project timelines, organizing material supply plans, arranging project payments, and completing project settlements.
Construction engineering measurement spans the entire project lifecycle, covering the decision-making, design, implementation, and operation stages. Currently, in China, a combination of manual methods and BIM (Building Information Modeling) measurement techniques is commonly used. This hybrid approach helps manage design changes, visa approvals, and conflicts between various disciplines during the construction process.
Advantages of BIM Measurement Technology
① Visualization and Simulation. While designers traditionally create two-dimensional drawings based on imagination, BIM measurement software offers a visual representation of the entire construction process. It displays the building itself, its surrounding environment, and provides 3D views of steel reinforcements during modeling and quantity calculations. For bidding teams, this technology supports commercial bidding, technical bidding, and construction management simultaneously.
② Optimization and Coordination. BIM software can identify potential problems during construction and design phases upfront, such as clashes between components from different disciplines. This early detection helps minimize design changes and enhances design quality, construction management, cost control, and operational management.
③ Dynamic Detailing. BIM models can generate various detailed drawings, including node details, sectional views, elevations, and floor plans. When design changes occur, modifying the 3D model automatically updates the corresponding 2D drawings, significantly boosting work efficiency.
④ Rapid Quantity Calculation and Data Transfer. BIM software enables quick modeling of main structures, secondary structures, and decorations by extracting CAD layers and using intelligent layout features. After summarizing and calculating, it supports detailed quantity assessment for single components, multiple components, and entire buildings. With advancements in digital technology, BIM models can be shared and transmitted over networks, facilitating pre-settlement and project auditing processes.
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