Open a Revit project, and click Insert tabLink panelLink CAD, or Insert tabImport panelImport CAD to import or link vector data from other CAD programs such as AutoCAD (DWG and DXF), MicroStation® (DGN), SketchUp (SKP and DWG), and ACIS (SAT). Revit Architecture supports importing most DGN surfaces and solids with the exceptions of cones, B-Spline surfaces, and SmartSolids.
In addition to using the Import CAD and Link CAD tools, you can import CAD files using drag-and-drop from Windows® Explorer onto a model, drafting, or sheet view of Revit Architecture. See .
You can mirror imported and linked CAD files. See .
Suppose that you import an AutoCAD® drawing into Revit Architecture and then want to trace over walls in that drawing. As you place the cursor near the lines representing the walls, it can snap to the lines or the midpoint between the lines.
Revit Architecture supports reading in proxy graphics from AutoCAD files. Proxy graphics are AutoCAD's representations of AutoCAD Architecture objects. Unlike AutoCAD Architecture objects, proxy graphics have no intelligence.
Proxy graphics can exist for many types of data in AutoCAD, including Mechanical Desktop (MDT) parts and AutoCAD Runtime eXtension (ARX) objects. If you set the Proxygraphics command to 1 in AutoCAD, Revit Architecture can then import ARX objects and AutoCAD Architecture objects (such as walls and floors) in the DWG or DXF file.
Revit Architecture can import DWG files containing subdivision surfaces and solids created in AutoCAD. Some complex subdivision meshes may fail to convert to a traditional solid or surface altogether, or generate a problematic solid or surface. Other highly complex SubD meshes may not import completely or at all.