How do you fix a complexed alignment that has a segment or two running in the wrong direction?

I was helping a user with a few issues today and he noticed the arrows on his plan display when his profile view was active, which indicated that there were some arcs in his alignment running in the opposite direction from the remaining segments. I was unable to talk him through a fix for the problem.

What is the top and steps that can fix this issue?

  • Not a great answer.. but this has happened to me several times.  I have found NO solution.  I will re-build the Alignment from scratch when this happens.  Or atleast Drop the elements and carefully re-complex it (preferably with the Automatic Method because this issue typically arises when the Manual method is used to complex the alignment).

    As far as I know, there is no way to reverse or transpose a portion of a complex alignment.

    It absolutely baffles and frightens me that this software allows this configuration to happen.  I can think of no instance in real-world design where this would be a desirable scenario.  A new User in the software can do colossal damage because of this BUG - due to disconnected Stationing and Profile design.  Most designers that come to me with this problem don't even recognize it till I sit down and diagnose it with them.  Sorry for the rant.  I'm just afraid someone's going to loose a lot of money or get sued over this stupidity.  

    -Cranky Ol' Mark

  • Have you tried the Simplify Geometry command?

    Regards,

    Zane Pratt


    Civil Designer

  • Where is this tool found? I do not recall seeing it anywhere.


    Charles (Chuck) Rheault
    CADD Manager

    MDOT State Highway Administration

    • MicroStation user since IGDS, InRoads user since TDP.
    • AutoCAD, Land Desktop and Civil 3D, off and on since 1996
  • Simplify Geometry is found under the Geometry ribbon. 

  • The Simplify Geometry command is at Geometry > Common Tools (to the right of the Ribbon).

    As mentioned, I don't know of anyway to correct this other than recreating it, either in its entirety or dropping and re-complexing. In my training classes, I tend to make a pretty big point around this. While it does much better than it used to, the Automatic method still seems to have issues sometimes, so I discourage its use and suggest users always check direction in a profile view as soon as they create complex geometry.

    If we have any Bentley Colleagues, might I propose an enhancement. One thing that sometimes trips up my users is that the directional arrow that gets displayed in the Complex By Element Command is only on one end of the element. I would propose it would be helpful to have that at both ends, both ends and the middle, or at increments along the element. Pretty low on my list of "needs" but it might help users visualize this issue sooner.

    Steve

    Steven Litzau, P.E. - Senior Consultant

    www.envisioncad.com

    ORD - 10.12.02.04 / 10.10.21.04 / 10.10.01.03 / 10.08.01.33
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