Imported Categories/Subcategories

When a CAD file is imported into Revit, all of its layers are represented as subcategories in the Imported Objects tab of the Object Styles dialog. Layers have a projection line weight, a color, and a pattern.

Imported File Limitations
There is no Cut line style for DWG, DXF, and DGN files. These files are just sets of lines, and lines canhave only one line weight thickness.

These can be overridden at any time to suit your requirements. Each import appears as a category in this dialog, as shown in Figure 2.7. There is no need to remap CAD layers into Revit taxonomy. If you’re used to the layer conventions set up in CAD, these will be mapped directly into the Object Styles dialog with same names, line weights, and colors.