import-DGN-files

For general information about CAD files refer to TIPS & TRICKS > IMPORTS & LINKS > CAD files (DWG)

DGN ENTITIES

Revit supports importing most DGN surfaces and solids with the exceptions of cones, B-Spline surfaces, and SmartSolids. For detailed information, see the table below.

DGN to Revit Conversion Table

KNOW ISSUES

• Splines do not import well into Revit. Convert them to polylines or ordinary lines first.

• Nested Cells are problematic, deep nesting may cause lines to disappear.

• Revit can only control the display of 'Levels' of a linked DGN. If different line patterns are not on identifiable 'Levels' they can not be controlled. This can be a problem if DGN line patterns have a scale factor too large or too small for the Revit drawing it is in.

Linked DGN file.

IMPORTING 3D DGN FILES

CAD imports are not cuttable by Revit - they appear as elevation in sections.

To make them cuttable import (you can not use link) the CAD file into a new Generic Model family.

Then place that family into the project file.

If you want to use the CAD as a Mass, link it into a new Mass family (note walls, roofs etc. can be hosted on a Generic Model).