Civil Cell creates extra pavement

Hi,

I've successfully created a simple driveway civil cell, and I've placed it at various points along a corridor and it's been working so far. However, on one occasion, the cell seems to want to connect the end points together, and it's creating an extra piece of pavement (see below). Does anyone know what may be off?

Thanks,

  • Hello Josh,

    I believe target aliasing can help here. You can also try the steps below, which requires you to create a temp geometry where you want to cut the earthworks for your section. Hope these methods help, do let me know.

    1. Create a geometry (could be temporary geometry). Give a profile to this geometry, the elevation should be the one where you want to cut the earthworks for your section.
    2. Now, edit the template drop for the fill component, to select the “Target Type” as “Feature Definition Vertical” and select the “Feature Definition” as the one that you have given to the temporary geometry that is created in step 1.

     3

    3.  Click ok and apply the changes.

    4. This will target the fill to the temp geometry at the given profile.

  • Hi Josh,

    Amita's answer is a good workaround. Following that steps will fix your civil cell right away.

    To answer your question - "What is off".

    Here are my thoughts - 

    While placing the civil cell, it asks for the references (sec rd cl, main rd eop, etc.). Check your selections.

    Looking at the wireframe in detail on the driveway right side, it seems like, it has created the pavement lane correctly, the end condition is also placed. But the extra pavement getting created is something weird!

    Try placing a different type of civil cell and see what happens.

    Thank you,

    Abhiram

  • So this seems to have been an issue for others before as well (see post https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/116478/civil-cell-terrain-connecting-outside-of-boundary).

    It looks like it has to do with the way that the terrain boundary is created. I followed a SIG tutorial on civil cells, and the instructor had created the terrain boundary by leaving one side open, like so:

    The program will recognize the intent and connect the two edges of pavement when creating the boundary. However, this also causes the triangulation methods to be unstable such that when the radii or width of pavement are changed, it will try to triangulate outside of the intended limits. I was able to fix the problem by physically adding in extra geometry and closing the boundary.

  • Wait...scratch that. I just tried it on another part of the corridor and this came back...so I really don't know what's going on haha.

    However, this time it could be easily fixed by changing the radius of the shown curve.

    It's part of the surface template that's creating the issue, not the end condition, so to reply to Amita, I'm not sure targeting a feature will work. I may give it a shot if I get the chance.

  • Those extra triangles are the result of your boundary elements of the pavement terrain model connecting to 0ft at the curb return/main EOP intersection point.  The easiest way to fix this is to add a very small offset, like 0.01 ft at this point.  This has always fixed this same issue for me.

    Hope this helps.

    Marc