Use the Property Data page to specify which properties to associate with the exported solids.
Select the property set definition in the left column and then select the Visible check box for each property that you want to be able to view for the extracted solids. Only the property sets which apply to both corridors and 3D solids/bodies are displayed on this page for selection.
You can add definitions to the Corridor Property Data - User Defined property data set by right-clicking in the grid and selecting Add, and you can set the default values for these definitions.
Properties for which the Visible check box is selected will be visible on the Extended Data tab of the AutoCAD Properties Palette when you examine the properties of the extracted solids.
The properties are also available for viewing in other applications such as Autodesk® Navisworks®.
By default, Autodesk Civil 3D includes three property set definitions that apply to corridors and 3D solids and bodies: