OpenGround Civil 3D Extension: live geotechnical models for civil designers
Reviewed by Tom Sullivan

First reported on Geoengineer.org – News
30 Second Briefing
Seequent’s OpenGround Civil 3D Extension links live geotechnical data from OpenGround into Autodesk Civil 3D, allowing borehole logs, interpreted strata and lab test results to update directly within corridor, grading and earthworks models. Designers can generate 3D ground models, cross-sections and surfaces that automatically reflect new investigations, rather than relying on static AGS or CSV imports. The workflow reduces manual rework and helps geotechnical and civil teams keep alignments, cut/fill volumes and foundation layouts consistent with the latest ground model.
Technical Brief
- Extension installs directly into Autodesk Civil 3D as an add-on, using native Civil 3D objects.
- Borehole locations are driven from OpenGround coordinates, avoiding manual re-keying of chainages and offsets.
- Users can filter imported investigations by project, location group, depth range or date of drilling.
- Log styles, symbols and colours are controlled by OpenGround configuration, enforcing corporate standards across drawings.
- Interpreted strata from OpenGround are mapped to Civil 3D surfaces via user-defined geology codes and layers.
- Lab test tables (e.g. strength, consolidation, PSD) are queryable within Civil 3D using OpenGround field names.
- Data remains read-only in Civil 3D; edits to geology or tests must be made in OpenGround.
- For multi-contract programmes, a single OpenGround project can feed multiple Civil 3D models with consistent ground data.
Our Take
Seequent’s push to make OpenGround data usable directly in Civil 3D lines up with its recent addition of lab-testing workflows to OpenGround (Feb 2026), signalling a move towards a single subsurface data spine feeding both design and reporting tools.
The 7th Geoprofessionals Data Management Report (Jan 2026) found geoprofessionals spending over 25% of their time on data management; tighter Civil 3D–OpenGround integration is likely aimed at clawing back that time by reducing manual transfer and re‑interpretation of ground models in civil design workflows.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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