Create and Edit Superelevations
See Understanding Superelevations for a description of a superelevation and its various transition sections.
Note: Before you create a new superelevation, make sure the alignment on which it is based is accurate and complete. If you change the alignment after creating the superelevation, you will have to recreate or modify the superelevation based on those changes.
Prerequisites:
- See the Subscription Plans page. For a license matrix by command, see the License page in the TBC Community. Also see View and manage licensed features.
- Alignment
To create or edit a superelevation:
- Do one of the following to display the alignment for which you want to create or edit a superelevation:
- In the Project Explorer, right-click the alignment and select Alignment Editor.
- Select the alignment in the Plan View, right click, and select Alignment Editor in the context menu.
- Select the Superelevation tab on the left side of the Alignment Editor.
- In the drop-down list in the upper left-hand corner of the Superelevation tab, select the segment you want to superelevate or whose superelevation parameters you want to edit.
Curves are identified in the list by their station number and radius. If a maximum superelevation has been defined for the curve, that is displayed as well.
- To view complete properties for the superelevation, click the Advanced check box. To view minimal properties, do not check the Advanced check box.
- If you do not click the Advanced check box, you can specify minimal properties for the superelevated segment. This is useful if you are entering superelevation properties from a plan. Complete the fields as described in Basic Superelevation Options.
- If you click the Advanced check box, you can specify complete runoff and runout properties for the approach to, and departure from, the superelevated segment. This is useful if you are designing the superelevation. Complete the fields as described in Advanced Superelevation Options.
You can switch between viewing advanced and basic properties by checking or unchecking the Advanced check box. If you enter advanced properties, basic properties are automatically populated based on the values you enter. If you enter basic properties, advanced properties are automatically populated based on the values you enter.
Click the Superelevation Diagram button located in the upper right-hand corner of the tab to view a diagram of the superelevation as you define parameters for it. For more information, see Superelevation Diagram.
If necessary, you can click the Clear button to clear values from all of the fields except the Normal cross slope field.
- Repeat this procedure as necessary to specify parameters for additional superelevated curves in the alignment.
You can now apply the superelevation to the corridor as a corridor template instruction. For more information, see Create Corridor Template Instructions.
