Alignment superelevation

Last updated: 2025-10-17

Total video time: 21:42

Exercise file: ali-data-C3D22.zip

Video: ali-super-01.mp4 3:00

Open drawing file

  1. Quick Access > Open
  2. Open File dialog box
    1. Look in: browse to folder dataset is saved.
    2. Select AliProf-All.dwg
    3. Open

    Tip: Another option to open Open File dialog box, Use Ctrl + O.

Set alignment properties

  1. Left-click alignment
  2. Hover over alignment, double box appears > left-click > Selection Cycling dialog box > select Alignment
  3. Contextual ribbon > Modify panel > Alignment Properties
  4. Alignment Properties dialog box
    1. Design Criteria tab
      1. Design Speeds box

        Info: If there isn't an entry, select Add design speed icon and the table will populate with an entry with default settings.

      2. Check box Use criteria-based design
      3. Check box Use design criteria file
      4. Select ...
        1. Select Design Speed Table dialog box
          1. Look in: dropdown, browse to C:\ProgramData\Autodesk\C3D 2020\enu\Data\Corridor Design Standards\Imperial
          2. File name: select WisDOT Design Criteria 2009.xml
          3. Open
      5. Default criteria box
        1. Minimum Radius Table > WisDOT eMax 4%
        2. Transition Length Table > 2LaneUndiv@OE, 4LaneUndiv@CL, 4LaneUndiv@ME
        3. Attainment Method > Crowned Roadway
      6. Uncheck box Use design check set
        1. Dropdown select Standard
      7. Check box Check for tangency between elements
    2. Apply
    3. OK
  5. ESC to end command

Warning: Superelevation cannot be applied to a Miscellaneous alignment type since design criteria cannot be assigned to this type of alignment.

Video: ali-super-02.mp4 3:22

Continue from previous exercise.

Use superelevation wizard to create table

  1. Left-click alignment
  2. Hover over alignment, double box appears > left-click > Selection Cycling dialog box > select Alignment
  3. Contextual ribbon > Modify panel > Superelevation dropdown > Calculate/Edit Superelevation
  4. Superelevation Curve Manager dialog box
    1. Select Superelevation Wizard
    2. Calculate dialog box
      1. Calculate for: Select radial button Entire alignment
      2. OK
    3. Calculate Superelevation - Roadway Type dialog box (Wizard)
      1. Roadway Type
        1. Select radial button Undivided Crowned
        2. Pivot Method dropdown > Center Baseline
        3. Next >
      2. Lanes
        1. Check box Symmetric Roadway
        2. Normal lane width: type 14'
        3. Normal lane slope: type -2%
        4. Next >
      3. Shoulder Control
        1. Outside edge shoulders box
          1. Check box Calculate
          2. Normal shoulder width: type 5'
          3. Normal shoulder slope: type -4%
          4. Shoulder slope treatment
            1. Low side: dropdown, select Breakover removal
            2. High side: dropdown, select Match lane slopes
        2. Next >
      4. Attainment
        1. Design criteria file: WisDOT Design Criteria file is assigned
        2. Check box Automatically remove overlap
    4. Finish
  5. Superelevation Table panorama opens.
  6. Select green check mark (upper right corner) to close panorama.
  7. X to close Superelevation Curve Manager dialog box
  8. ESC to end command

Video: ali-super-03.mp4 2:47

Continue from previous exercise.

Editing superelevation table

  1. Left-click alignment
  2. Hover over alignment, double box appears > left-click > Selection Cycling dialog box > select Alignment
  3. Contextual ribbon > Modify panel > Superelevation dropdown > View Tabular Editor
  4. Superelevation Table panorama
    1. Curve 1 > Transition In Region > Runoff > Begin Full Super
      1. Go to column Left Outside Shoulder and change value to 2.75%Enter
    2. Curve 1 > Transition Out Region > Runoff > End Full Super
      1. Go to column Left Outside Shoulder and change value to to 2.75%Enter

Export superelevation table

In the Superelevation Table panorama, there are two icons in the top row with blue arrows. One is for import, the other is for export.

  1. Select Export superelevation table icon
  2. Export to CSV dialog box
    1. Save in: Project folder
    2. File Name: type 12345678-Super-AliProf
    3. File type: CSV
    4. Save

 

Select green check mark (upper right corner) to close panorama.

X to close Superelevation Curve Manager dialog box

ESC to end command

Video: ali-super-04.mp4 2:20

Continue from previous exercise.

Create superelevation view

  1. Left-click alignment
  2. Hover over alignment, double box appears > left-click > Selection Cycling dialog box > select Alignment
  3. Contextual ribbon > Modify panel > Superelevation dropdown > Create Superelevation View
  4. Create Superelevation View dialog box
    1. Specify superelevation display options:
      1. Left Outside Lane > Display, check box > Color, change to RedOK
      2. Right Outside Lane > Display, check box > Color, change to GreenOK
      3. Left Outside Shoulder > Display, uncheck box
      4. Right Outside Shoulder > Display, uncheck box
      5. OK
  5. Select superelevation view origin: Left-click anywhere to the right of alignment.
  6. Zoom in on the superelevation.
  7. Left-click on either red or green line. Diamond grip points appear for editing, if required.

Video: ali-super-05.mp4 3:28

Continue from previous exercise.

Build an assembly

  1. Ribbon > Home tab > Create Design panel > Assembly dropdown > Create Assembly
  2. Create Assembly dialog box
    1. Name: Main Road
    2. Leave all other settings as is.
    3. OK
  3. Specify assembly baseline location: Left-click to the right of the alignment.
  4. Once placed, it will zoom into itself.

Build subassemblies

  1. Open Tool palette
  2. Ribbon > Home tab > Palettes panel > Tool Palettes icon
  3. Select palette and drag to left to anchor.
  4. Open Properties palette
  5. Ribbon > Home tab > Palettes panel > Properties icon
  6. Select palette and drag to right to anchor.
  7. Tool palette > Roadway tab > select LnExtendBase
  8. Properties palette > Design tab > Advanced > Parameters
    1. Lane width: change to 14'
    2. Superelevation type: Use outside lane SE
    3. Subgrade superelevation method: Use outside lane SE
  9. Left-click on the right side of the assembly, the right side lane subassembly will drop in.
  10. Left-click on the left side of the assembly, the left side lane subassembly will drop in with identical properties set.
  11. Right-click and end command.

Video: ali-super-06.mp4 2:49

Continue from previous exercise.

Open superelevation curve manager to edit

  1. Left-click alignment
  2. Hover over alignment, double box appears > left-click > Selection Cycling dialog box > select Alignment
  3. Contextual ribbon > Modify panel > Superelevation dropdown > Calculate/Edit Superelevation
  4. Superelevation Curve Manager dialog box
    1. Superelevation status: displays *Calculated*
    2. Superelevation Curve: dropdown, select Curve 2

      Info: The <<Previous and Next>> buttons can be used to select a curve within the alignment. The curve selected will be highlighted in the drawing.

    3. Superelevation Curve Details > Design Speed > Left-click in field to edit
      1. Alignment Properties - Design Speed dialog box
        1. Number 1 > Design Speed, change to 35 m/h
        2. OK

    4. Superelevation Criteria > Normal Shoulder Width, change to 6'

    5. Superelevation status: displays warning, *Out of Date*
    6. Left-click Recalculate
      1. Superelevation - Manual Edits Found dialog box
        1. Left-click Continue to recalculate
    7. Superelevation status: displays *Calculated*
  5. X to close Superelevation Curve Manager dialog box
  6. ESC to end command

Video: ali-super-07.mp4 3:56

Open drawing file

  1. Quick Access > Open
  2. Open File dialog box
    1. Look in: browse to folder dataset is saved.
    2. Select AliProf-All-ali-super-07.dwg
    3. Open

Open superelevation curve manager to add data

  1. Left-click alignment
  2. Contextual ribbon > Modify panel > Superelevation dropdown > Calculate/Edit Superelevation
    1. Edit Superelevation - No Data Exists dialog box
      1. Left-click Open the superelevation curve manager
  3. Superelevation Curve Manager dialog box
    1. Left-click Create user-defined curve icon
      1. Select entities to create a user-defined curve: Left-click alignment
      2. Select another entity or press Enter to finish:Enter
    2. X to close Superelevation Curve Manager dialog box
  4. Left-click alignment
  5. Contextual ribbon > Modify panel > Superelevation dropdown > View Tabular Editor
  6. Superelevation Table panorama
    1. Left-click User-Defined 1
    2. Left-click Add a superelevation critical station icon (plus sign)
      1. Specify station along baseline:2085Enter
    3. Left-click Add a superelevation critical station icon
      1. Specify station along baseline:2188Enter
    4. Left-click Add a superelevation critical station icon
      1. Specify station along baseline:2300Enter
    5. Left-click Add a superelevation critical station icon
      1. Specify station along baseline:2430Enter
    6. Transition In Region > select name Manual station and rename to Begin Slope Change
    7. Transition In Region > select name Manual station(2) and rename to Begin Full Slope Change
    8. Transition Out Region > select name Manual station and rename to End Full Slope Change
    9. Transition Out Region > select name Manual station(2) and rename to End Slope Change
    10. Transition In Region > Begin Slope Change > Left Outside Shoulder, type -2%
    11. Transition In Region > Begin Full Slope Change > Left Outside Shoulder, type -3.62%
    12. Transition In Region > End Full Slope Change > Left Outside Shoulder, type -3.7%
    13. Transition In Region > End Slope Change > Left Outside Shoulder, type -2%
    14. Select green check mark (upper right corner) to close panorama.