Description
In São Paulo, Brazil’s largest city, modeling underground infrastructure involves complex technical and data challenges. This case study will present the first Brazilian project to apply SCAN-2-BIM with IFC 4.3 interoperability in an active metro tunnel—part of the Line 2-Green extension, more than 40 meters deep. Reality capture was done entirely with terrestrial laser scanning (TLS). The point cloud was semantically classified and feature-extracted in ReCap software. Modeling was automated using Civil 3D software with Dynamo and Subassembly Composer, while coordination and export were handled via Navisworks and IFC 4.3 from Civil 3D. The team overcame issues of data volume, accuracy, and integration. This pioneering project also defined asset-agnostic workflows for SCAN-2-BIM in linear infrastructure—scalable and reusable across future projects.
Key Learnings
- Learn how to structure scan-2-BIM workflows using TLS for complex underground infrastructure modeling on reusable, agnostic workflows.
- Learn how to classify and extract features from point clouds using ReCap.
- Learn how to automate linear modeling using Civil 3D, Dynamo, and Subassembly Composer.
- Learn about coordinating models and managing data exchange using Navisworks and IFC 4.3.