As-built BIM model
An as-built BIM model reflecting the completed construction: detection of deviations from design and a reliable model for facility operation.
Some deviation from the design is inevitable during construction: structures shift by a few centimetres, services are rerouted on site and extra openings are made. An as-built BIM model is a digital representation of the asset as it was actually built, not as it was designed.
For owners and developers such a model is a key document for construction acceptance, settling accounts with contractors and handover. Facility managers take the exact location of concealed services, equipment parameters and areas from the model to plan maintenance and repairs.
Work starts with 3D laser scanning during construction stages or after completion. Scanning services before walls and ceilings are closed makes it possible to document elements that will later be hidden. The design BIM model is compared with the point cloud, deviations are shown on a colour map, and the model is then updated to match reality or rebuilt.
Attributes needed for operation, such as room numbers, equipment data and materials, are added. The model is delivered in Revit (RVT) and IFC format and can be integrated into facility management systems.
When you need it
- Construction is complete and the building is being handed over
- Compliance of construction with the design must be checked
- Services must be documented before walls and ceilings are closed
- Final accounts with the contractor are based on actual quantities
- The facility manager is moving to BIM-based operation
What's included
- Laser scanning during or at the end of construction
- Scanning concealed works before closing
- Comparing the design model with the point cloud
- Deviation maps
- Updating the model to the as-built condition
- Adding operation attributes
How we work
- Aligning scan stages with the construction schedule
- Staged scanning
- Design-versus-actual comparison
- Producing the as-built model and attributes
- Delivery of model and reports
Deliverables
- As-built BIM model (RVT, IFC)
- Colour deviation map and report
- Staged point clouds
- As-built drawings from the model (DWG, PDF)
