- 1
Upload your IFC or GLB model to the survey (see “Upload your first point cloud & BIM”). The model needs to be georeferenced or aligned with the point cloud.
- 2
Under BIM Models in the Scene panel, choose Overlay to see the model on top of the scan. Use the opacity control to fade it in and out.
The BIM model overlaid on the point cloud - 3
Choose Split to see the scan and the model side by side.
Split view: scan on the left, model on the right - 4
To check one element, select it in the BIM object tree. The point cloud is cropped to that element. (UI may differ)
- 5
Start Detect, then pick a tolerance in Tolerance Configuration and click Run Detection. (UI may differ)
- LOD 300
- Medium tolerance, about 20 mm
- LOD 400
- Strict, about 5 mm
- LOD 500
- Field verified, about 1 mm
Tolerance Configuration - 6
Detection runs in the background, so the viewer stays responsive.
Running deviation detection - 7
Elements within tolerance turn green. Elements outside it turn red, with a note on the kind of deviation: shifted, rotated, the wrong size, or missing.
A deviation flagged in red on the model - 8
Click a flagged deviation to raise an issue. The element ID, its 3D position and a screenshot are filled in for you.
Good to know
- Organization Admins and Supervisors can set tolerances and run detection. Members can open existing results.
Try it on your own site
Start a free trial, or open a LAS, LAZ or IFC file in the free Lite Viewer with no login.