BIM-based construction quality inspection offers a more advanced approach compared to traditional methods. Typically, earthwork excavation and slope protection construction rely on a total station to measure the positions of the upper and lower opening lines of the foundation pit, verifying compliance with design requirements. However, for excavations deeper than 10 meters, this method is insufficient. To address this, the project’s technical team combined 3D scanning with BIM models to develop an innovative BIM-based quality inspection method.
Before excavation begins, technicians create a three-dimensional theoretical model of the foundation pit in Revit, based on construction drawings. Once excavation is completed, a laser scanner captures the foundation pit’s three-dimensional shape, generating point cloud data. This data is then imported into Revit to produce an accurate, as-built 3D model of the foundation pit. By comparing the theoretical design model with the actual scanned model, technicians identified one case of over-excavation and two cases of under-excavation.
The over-excavation was located in the middle section of the slope protection, where the slope coefficient significantly exceeded the allowable deviation specified by standards. The construction team promptly reinforced the area, eliminating potential safety hazards and preventing accidents. This BIM-based method not only enables rapid quality inspection of the foundation pit but also allows the actual model to be imported into calculation software. This supports accurate quantity takeoff for both the client and contractor, reducing the workload involved in settlement processes.
Beyond foundation pits, this BIM quality inspection approach has been successfully applied to critical construction areas such as elevator shafts, exterior wall keels, and outdoor flooring within the project, yielding excellent results. The project’s experience demonstrates that BIM technology has profoundly transformed construction project management. It serves as a visual design tool, facilitates quick quantity extraction, provides progress visualization, and supports resource analysis. When combined with advanced 3D scanning technology, BIM replaces many complex manual tasks.
Overall, the application of BIM technology enhances project completion, improves quality, shortens construction timelines, and ensures higher standards throughout the process.
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