Levels for DGN Export

Use the Levels tab of the Modify DGN Export Setup dialog to customize layer mapping settings for a DGN export setup.

• Click File tab ExportOptions (Export Setups DGN). Select the setup to modify. Click the Levels tab.

The Levels tab of the Modify DGN Export Setup dialog displays settings for the currently selected setup.

Note: Although you can load settings from a text file when creating/modifying an export setup, the level mapping information for exporting to DGN is stored as part of the export setup rather than as a separate text file.

Export level options

For Export level options, specify how Revit LT elements with view-specific graphic overrides are mapped to MicroStation levels.

Graphic properties of Revit LT elements, such as color, line weight, and line style, are defined in the object styles of the categories to which the elements belong, but these definitions can be overridden for a selected element in a specific view.

• Export category properties BYLEVEL and overrides BYELEMENT. A Revit LT element with view-specific graphic overrides retains those overrides in the DGN file, but resides on the same level as other entities in the same Revit LT category.
• Export all properties BYLEVEL, but do not export overrides. View-specific graphic overrides are ignored in the DGN file. Any exported Revit LT element reside on the same level as other entities in the same Revit LT category. By forcing all entities to display the visual properties defined by their level, this option results in a lower number of levels and provides by-level control over the exported DGN file.
• Export all properties BYLEVEL, and create new levels for overrides. A Revit LT element with view-specific graphics is placed on its own level. This option provides by-level control over the exported DGN file and preserves graphical intent. However, it increases the number of levels in the exported DGN file.

Load levels from standards

Select a standard, or select Load settings from file, navigate to the file, and click Open.

Edit mapping values as desired. To change a Projection or Cut value, click in the Level or Color ID column for the appropriate category, and enter the new value. (Color ID corresponds to a MicroStation color ID.)

Note: Although you cannot add level modifiers to individual categories when exporting to DGN format, you can still use the Phase Status and Underlay modifiers (listed under Modifiers in the Categories column) to control which level an exported element is placed on. For example, if the value in the Levels column for the Demolished phase status is blank or zero, then the phase status does not export, and a demolished door is placed on level 40, which is the default level name for the Doors category. However, if the level value for Demolished is -Demo, then the demolished door is placed on a separate 40-Demo level.