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Civil Cell - Terrain Moving

Enrique Salas
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Hello Team, 

Recently, we were brut forcing the modeling intersections in our project until we learned about Civil Cells. We have found them easy to edit and place, but we found that in some cases, the terrain moves and it causes some weird distortions in our model. In this case, the return on the North End of the following picture, the terrain moved. I added a point control to the Edge of Pavement of the return template so it could follow the proposed return line more closely, after it was done processing, the terrain just decided to move. The terrain did not move when I did the same process for the other return template. Is there a way to "anchor" the terrain so it doesn't move or distort? 

Please let me know if there's a way to solve this problem. I can provide more pictures and settings if possible!

Thank you for your time, 

-Enrique Salas

  • 0 Offline

    It's not moving.  It is getting confused about boundary elements.  Notice triangles on the outside of upper radius where there should be none and the absence of triangles in the right hand lane.  This is a pretty common occurrence.  Partly it is nature of the beast, while we pray for future improvements.

    Here are some things that typically work for me:

    • Many (most?) times what happens is the join line across the edge of the mainline corridor ends up overlapping the radius.  This join line will sit right on top of the EOP.  Select it and drag the start and/or end stations towards the center to eliminate the overlap.
    • If you change the lane widths, the max triangle length can become invalid.  Select the terrain model and increase the max triangle length.
    • If none of the above works then;
      • scream and holler, run in circles (but remind yourself that things are OK).
      • Drop the civil cell
      • delete the terrain model
      • Make a new terrain model using the now modified geometry.  
      • This is the nature of the beast part.  Sometimes after editing the radii and lanes or whatever, we just create a situation that the software just gets lost.  By rebuilding the terrain we get a new chance to explicitly define where the boundary elements are.  And it only take a couple minutes.

    Robert Garrett
    Senior Consultant

    www.envisioncad.com

  • 0 Offline in reply to Robert Garrett

    Hello Robert, 

    I added a point control for the shoulder of the template and it freaked out even more. I see that is mostly the terrain of the return that is acting strange. Could you tell me where I could edit the triangle properties? I also have no idea what point I should drag like the one you mentioned to correct the issue. For more context, this all started when I increased the radii from 35' to 75' 

    Thank you again for your tips and tricks! I've already ran around a bit so I'm a little tired. 

  • 0 Offline in reply to Enrique Salas

    (This is the Civil Cell, with the point controls, but before I change the radii from 35' to 75')

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