Underground Modeling
3D modeling and coordination of below-grade utilities, infrastructure, and civil systems.
Underground utility modeling creates an accurate 3D picture of what exists below grade (water, sewer, gas, electrical, telecommunications, and storm drainage) allowing contractors and engineers to plan excavation, foundation work, and new utility installations without severing existing services. At EZ-VDC, we combine existing utility records, GPR survey data, and Civil 3D modeling to produce clash-checked underground models that integrate directly with above-grade BIM coordination workflows.
Record Drawing Collection
We gather all available utility record drawings, municipal GIS data, and historical as-built documentation to establish a baseline for existing underground conditions.
Survey Data Integration
GPR survey data, potholing reports, and field-located utility markings are integrated into the model, with uncertainty zones flagged and confidence levels documented.
3D Utility Modeling
All utilities are modeled in Civil 3D with correct depth, diameter, material, and service type, georeferenced to the project coordinate system for full integration with above-grade models.
Conflict Analysis
The underground model is federated with above-grade structural and civil models in Navisworks to detect conflicts between new construction elements and existing utilities.
Coordination Report & Support
We deliver a conflict report, utility protection plan, and sequenced excavation drawings, plus on-call support as excavation proceeds and field conditions are confirmed or updated.
