Civil 3D – 2010 Assembly Link Tip

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An associate contacted me recently regarding how to move 2 sets of train tracks through a single corridor, while keeping the ability to deviate the overall width.  The example I received had the sets of tracks identically elevated and on a single bed.  I decided to go a bit overboard, and add vertical and horizontal control.

Above you can see that I mocked up something real fast.  2 separate alignments, and 2 respective profiles.  I wanted to create a open area in the middle to add a freight depot.  I used the profiles to help me adjust the grades for the buildings.

The Assembly

Here is the first half of the solution.

I’ll list the steps below the example image, and then I’ll discuss some important items afterward.