Scan to BIM: modeling based on the 3D footprint of the building

As part of a project of BIM modeling of the existing system, several modeling methods are available to project developers. Among these, the “scan to BIM” is a process that is increasingly used.

A scan to BIM process corresponds to a modeling of the existing environment based on the building's point cloud, a very precise 3D footprint of the building, generated during a 3D scanning operation.

By following this methodology, the point cloud is imported into the modeling software (e.g. Revit) to serve as a modeling layer. Several steps make up this process;

  • Le géoréférencement et nord du projet ;
  • The creation of floors;
  • The creation of the roof;
  • The modeling of networks;
  • The modeling of finishing elements.

The advantages of scan to BIM

Compared to more traditional methods (based on 2D building plans or on a telemeter reading), scan to BIM has several advantages.

Indeed, relying on an existing point cloud ensures a quality deliverable, without deviating from reality. By importing the point cloud into modeling software such as Revit, the designer benefits from an up-to-date and three-dimensional impression of reality.

On the other hand, relying on the 2D plans of a building involves a certain margin of error, especially since they may be erroneous.

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