In a corridor model drawing, keep the drawing at a manageable size by using data references to bring in the alignment and profile from their source drawing, and the existing ground surface from its source drawing.
Once the corridor is designed, create a separate drawing for the section views. In this drawing, use a data reference to bring in the alignment, and use an external reference (xref) to bring in the corridor drawing. The sections can extract the required corridor data from the xref.
If a drawing contains several profile views, these can add significant time to the file size and processing time. Several strategies are available to minimize these effects. Especially in the initial design phase of a project, keep each profile view as simple as possible, with minimal labels and data bands, and no clipped grids. As the design progresses, you can add more construction data to the display.
If you have profile views in the same drawing as a corridor, you can delete the views after you finish designing the layout profiles. The profile objects remain in the drawing for reference by the corridor, but the rebuilding operations are faster, and the drawing is a little smaller without the profile views. You can re-create the profile views as required in a production drawing, separate from the corridor.
For more information, see Profile and Section Views.