Rural intersection: match top of gravel shoulder to top of terrace behind curb and gutter

Total video time: 8:56

Last updated: 2020-10-26

There are more optional ways you can further refine your corridor intersection. One of the easier ways to affect the design width is to align the shoulder and width match points. Because of the differing elevations of the two areas, creating a tie in point will help your surfaces transition more appropriately or more seamlessly. This process is just adjusting the target alignments so EGS matches back of terrace.

Exercise files: rurl-int-grdg-bhnd-cg-crdr-end-data-c3d16.zip

Start with: 12345678\Design\Corridors\Crdr-25-4thAve.dwg

rurl-int-mtch-egs-top-trrc-bhnd-cg-01.mp4 2:55

Move some alignments along the main line so the EGS lines up with the GC Terrace Feature Line

  1. Select the EGS Alignment on right side

  2. Geometry Editor > Add PI near the last frequency

  3. Drag the end of the alignment out to the CG Terrace Feature Line

  4. Highlight the left ETW alignment and drag the alignment out to the CG Terrace > Rebuild Corridor

  5. Save

Info: The other feature lines of the corridor will adjust with the alignment. The grading along the curb return will have to be adjusted.

Exercise files: Continue with previous data set or start here: rurl-int-grdg-bhnd-cg-crdr-end-data-c3d16.zip

Start with 12345678\Design\Corridors\Crdr-25-4thAve.dwg

rurl-int-mtch-egs-top-trrc-bhnd-cg-02.mp4 2:10

  1. Highlight a feature line behind the Back of Curb grading in the SW quadrant
  2. Drag the end grip to line up with the corridor

  3. Repeat with the other two feature lines

  4. Prospector tab > Surfaces > right click Int-SW-Quad-Grading > Rebuild

  5. There may be some extra lines to remove

  6. Save

 

Exercise files: Continue with previous data set or start here: rurl-int-grdg-bhnd-cg-crdr-end-data-c3d16.zip

Start with 12345678\Design\Corridors\Crdr-25-4thAve.dwg

rurl-int-mtch-egs-top-trrc-bhnd-cg-03.mp4 3:51

Repeat on the north side

  1. Highlight Lcl-4thAve-Left-EGS alignment

  2. Drag the end to the CG_Terrace

  3. Highlight the 25-Left-TrnLn alignment

  4. Insert PI at the start of the taper

  5. Drag the end of the alignment to the GC_Back of Terrace feature line

  6. On the NE side select the 25-Right-TrnLn Alignment

    Tip: Because elements overlap here make sure the Selection Cycling function is on. This can be found in the Snap settings dialog box Selection Cycling tab.

  7. Drag the end of the alignment to match the CG Terrace feature line

  8. Select the Lcl-4thAve-Left-EGS

  9. Drag it to CG_Terrace

  10. Select Lcl-4thAve-Right-EGS

  11. Drag the end to the CG_Terrace

  12. Rebuild Corridor
  13. Select the Int-25-4thAve-NW-Ditch

  14. Adjust the grips to tie into the CG_Terrace

  15. Rebuild Corridor

  16. Save
  17. Open Srfc-Rfnt-All-Datum
  18. Prospector tab > Surfaces > right click Rfnt-25-Datum > Rebuild
  19. Save
  20. Open Srfc-Rfnt-All-Top
  21. Prospector tab > Surfaces > right click Rfnt-25-Top> Rebuild
  22. Save