Automated Spatial Analysis and Quantity Takeoff (QTO) in OpenBIM IFC
Extracting net floor areas, room boundary volumes, and bill of quantities (BOQ) automatically from architectural IFC building models.
Manual cost estimation and architectural area programming are prone to human oversight. Parsing semantic `IfcSpace` entities and material quantity sets programmatically allows web tools to generate accurate takeoffs instantly.
1. Parsing IfcSpace Boundaries & Net Floor Areas
Traversing `IfcRelSpaceBoundary` relations extracts precise room perimeters, usable floor areas, and ceiling heights without requiring manual CAD polygon tracing.
2. Automated Material Volume & Surface Takeoff (QTO)
Aggregating `IfcElementQuantity` property sets across concrete walls, steel framing, and finishes computes total material volume and formwork surface areas for automated cost estimation.
3. Interactive WebGL Spatial Heatmap Visualization
Color-coding floor plan zones in WebGL based on occupancy limits, room types, or cost metrics provides interactive visual insights for facility managers and cost consultants.