from Civil to Inventor

The Autodesk enthusiast exile

Civil 3D

New posts and topics are being added at the NEW BLOG

I have been using AutoCAD Civil 3D since the day the box showed up in 2006.  Since then I have been programming and twisting the way the product is used.

If you want something discussed, please post it here.  It does not matter how simple or complex. This page is used by people at all levels, so post your comments or questions.

Civil 3D Topics:

Alignments   Assemblies   Corridors    Gradings   Feature Lines    Parcels     Pipes    Points   Profiles   Surfaces   DRef  

Important Items:

Autodesk Civil Service Release site

Trojan knowledge base cleanup solution

Civil 2010 Update 1

Civil 3D 2010 Update 1

AutoCAD Civil 3D 2009 Update 1

AutoCAD Civil 2009 Update

Raster Design 2009 Solid Fill Hotfix

 Autodesk Support RSS


  1. Hello!
    I have a problem with my corridor.
    I have 2 railroads with changing distance between them.
    the problem is I cant make this distance change.

    sorry for my English.


    Comment by Maksim | November 9, 2009 | Reply

    • Maksim,
      Can you be more specific for us? Are the 2 railroads built in 1 corridor?
      Are they seperate Alignments?
      Send us an image and a description of the issues.


      Comment by John Evans | November 9, 2009 | Reply

      • Hello
        Can i send you a email?

        Comment by Maksim | November 10, 2009

      • Sure. I just sent the contact info your way.

        Comment by John Evans | November 10, 2009

  2. Makc k,
    You would create the assembly using 1 alignment as a baseline. Then add the appropriate components. We would tie a link relating the second referenced alignment (and profile if desired, but not necessary) to a feature in the assembly. There are a few settings and specific subassemblies that need to be used, but the end result is that the assembly will follow the first alignment, and the assembly will adapt to the second alignment.

    How much of assembly links and alignment/profile targets do you understand? How much do you not understand?

    John Evans

    Comment by John Evans | November 11, 2009 | Reply

  3. i was wondering if anybody knew of a simple way to do ADA curb ramps for a corridor? i have searched and searched for a solution but have come away with nadda on this subject. I have a theory but actually putting it into practice is another issue all together. any information would be of great appreciation.

    Comment by Larry Richards | November 12, 2009 | Reply

    • Larry,
      I am envisioning 2 ways, but I might not be thinking of what you are.
      Submit a sketch for me, and we can get you some help. I am getting ready for AU, and just completed lengthy help request article (look for it Monday, after client test drives the solution), so I am slammed. It might be December before I can do any free help, but let’s see what you have first, ok? civl2inventor-AT-cox-DOT-net

      Comment by John Evans | November 13, 2009 | Reply

  4. We fixed up Makc’s linked railroad assembly. You can find it at here

    Comment by John Evans | November 16, 2009 | Reply

  5. John, the ada curb ramps come from the FDOT index, they can be found at

    the curb ramps that are most popular are CR22, CR21, CR20 and CR12.

    I couldn’t find a button to attach a sketch, although i am sure it was right in front of me.

    Comment by Larry Richards | December 16, 2009 | Reply

  6. When labeling contours in Civil 3d, is there a way to have the Contour Label Line display set to false by default?

    Comment by Larry Richards | January 18, 2010 | Reply

    • Larry,
      Command settings for the Create labeling operation.
      Check out this image.

      Comment by John Evans | January 18, 2010 | Reply

  7. John,

    I am trying to figure out the parts builder. Excellent job on the walk thrus, you have created. I have only read through them. I plan to actually create your part strating soon. But I have a question to pose to you.

    I am trying to create a clean-out with the following parameters:

    1) Hdpe pipe in sizes 6in to 18 in
    2) the top portion has varible height to change elevations above grade. This portion ties into a 45 deg section.
    3) The 45 deg section ties into a varible length and varible slope portion of pipe.

    the 45 deg section would not need to be varible i would not think.

    any ideas?

    Comment by Gary H | October 11, 2010 | Reply

  8. John,
    Have you ever built a structure in Part Builder where everything validates and the XML file is clean, but when you insert the structure in your plan drawing, dimensions that are “modifiers” (transitions and extrusions) show up correctly, but any other dimension is translated in feet when they were designed in inches? For example, a wingwall height of 96 INCHES and structure length (which was extruded) of 285 inches shows up in the drawing as 96 FEET in height, but 23.75 feet (285″/12 = 23.75′). The transition is correct but obviously the height is fudged. I’ve double checked the obvious value parameters. I know other people have had this problem so I’m hoping that there is a hidden setting that I’m missing. I’d appreciate any advice. Thank you very much. Ben.

    Comment by Ben Vierling | November 29, 2011 | Reply

Leave a Reply to John Evans Cancel reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: