In an AutoCAD Civil 3D drawing, a site is used to collect or group sub-collections, such as plots, alignments, and gradings, by a topology that they share.
When objects that are grouped under the Sites collection are exported to a LandXML file, the site name is exported with them.
When objects are imported from a LandXML file into the drawing, two site pickers are displayed:
- Alignments Site allows you to specify the site on which the alignments will reside. The default selection is <none>, which places the alignments in the top-level Alignments collection and prevents them from interacting with plots.
- Plots Site allows you to specify the site on which the plots will reside. If no sites exist in the drawing, the plots are placed on the default site (Site 1). If the LandXML file has a site name for its features, then that site name is created in the drawing and the plots are assigned to it.