To Create an Alignment From an Existing Alignment

1. Click Home tabCreate Design panelAlignment drop-down Create Alignment From Existing Alignment Find.
2. Select an alignment in the drawing, or press Enter to select it from a list.

   The following prompt is displayed: Specify split point on alignment or [Entities/Finish] <Entities>:

   You can specify multiple, non-contiguous portions of the source alignment:

   • To add a range of stations from the source alignment, click the desired start and end stations, or enter station numbers at the command line.
     Note: Some spiral types cannot be partially selected. If the Unable to create alignment from partial selection of this spiral type prompt is displayed, then you must specify start and end stations that encompass the entire spiral.
   • To add a series of sub-entities from the source alignment, press Enter. Click the desired sub-entities on the source alignment.
3. Type ‘f’ to finish the selection.
4. In the Create Alignment from Existing Alignment dialog box, enter a unique name for the alignment.
5. Enter an optional description.
6. Enter a starting station value.

   By default, this value is the lowest station that you specified, or the starting station of the beginning sub-entity that you selected.

7. On the General tab, specify the following settings:
   • Site

     Specify a site with which to associate the alignment or accept the default <None>. For more information, see About Sites.

   • Alignment Style
   • Alignment Layer
   • Alignment Label Set
8. On the Design Criteria tab, specify a Starting Design Speed to apply to the alignment starting station.

   This design speed is applied to the entire alignment. Additional design speeds can be applied at other stations after the alignment has been created. For more information, see To Change Alignment Design Speed and Design Criteria Properties.

   Note: If you do not want to apply design criteria to the alignment, proceed to Step 10.
9. To associate design standards with the alignment, select the Use Criteria-Based Design check box.

   On the Design Criteria tab, specify the following settings:

   • Use Design Criteria File

     Select this check box to associate a design criteria file with the alignment. The default design criteria file location and the Default Criteria properties becomes available when you select the check box.

     Note: The first design criteria file found in the C:\ProgramData\Autodesk\C3D <version>\enu\Data\Corridor Design Standards\<units> directory is used by default when the criteria-based design feature is used.
   • Use Design Check Set

     Select this check box to associate a design check set with the alignment. The design check set list becomes available when you select the check box. Select a design check set from the list.

10. Click OK.