IFC Import Settings dialog box

The IFC Import Settings dialog box lets you control how the IFC model are imported.

  1. Choose profile
  2. Filter
  3. Profile settings
  4. Model origin

Choose profile

Sets a profile for importing the IFC model. The predefined profiles are:
  • Default import.
  • Optimized for referencing (favor meshes and exclude furniture): imports BREP geometry as meshes during IFC import.
  • Import all.
  • Geometry only.
  • Architectural Elements only.
  • Structural Elements only.
  • MEP Elements only.

Filter

Creates a filter for importing based on element Types. Click the filter icon to toggle between the current Profile settings and Filter criteria.

The criteria are displayed as a hierarchical structure and as tags. By default, all types of elements are selected to be imported.

After deselecting a category of element types in the tree list, the All types tag is replaced by the remaining categories tags.

After deselecting an element type under a category in the tree list, the category tag is replaced by the remaining entity type tags.

Note: When you modify the filter criteria of a predefined profile, the changes are saved for the next IFC import in a temporary profile with the same name as the original, followed by (Modified).

Profile settings

Defines the profile settings:

Import BIM data (types, properties, quantities)
Imports BIM data during IFC import (types, properties, quantities).
Import parametric behavior of components
Imports parametric windows and doors from the IFC file as parametric components in BricsCAD.
Explode spatial structure to XRefs
Imports each building and storey as a separate XRef.
Import BREP geometry as meshes
Imports BREP (Boundary Representation) geometry as meshes. This can give more accurate results for certain complex BREP geometry.
Import IFC meshes as subdivision meshes
Imports IFC meshes as subdivision meshes. When OFF, it uses polyface meshes to import meshes from the IFC file.
Note:
  • A polyface mesh is limited to 32767 faces or vertices.
  • A subdivision has no restrictions.
Use profiles from databases with corresponding geometry
Compares profiles with the project and central database based on their geometry during IFC import. If it matches, the parameters defined in the project/central database (profile name, size, and standard) are used instead of imported parameters.

Model origin

Defines where to position the model with reference to the World Coordinate System (WCS) origin. Placing the IFC Global Coordinate System in WCS origin can result in a model positioned far from the origin.

The options are:

  • Place IFC Global Coordinate system in WCS origin.
  • Place IFC Project Location in WCS origin.
  • Place IFC Site Location in WCS origin.
Note: All these settings are also available in the Settings dialog box, under BIM > Import and Export > IFC.