AECC Alignment to "Free Segment" Alignment

[mcloughlin]

I'm working with an alignment imported from an LDD topographic drawing.  It appears in C3D 2014 as an "AECC alignment" when listed.  Presumably, there's a way to induce this alignment to work like a "free segment" alignment, in which each segment is dependent upon its conjoiner and tangencies are maintained when endpoints of segments are moved. 

So.  Is it possible to convert this "AECC alignment" to a "free segment alignment" in C3D?

Thank you for your help. 

[tcorey]

After importing the laignment from Land Desktop, pick the alignment and go to Geometry Editor. Turn on the Sub-entity Editor. Pick the Pick Sub-entity button and select a curve. In the Sub-entity editor window, change the Tangency Constraint where appropriate.

[mcloughlin]

So.

After importing the AECC alignment from Land Desktop, I pick the alignment and go to Geometry Editor. I turn on the Sub-entity Editor and pick the Pick Sub-entity button, and I see what is shown in the appended JPG.  And that's all I see.  What am I missing.

[wfberry]

Here is what I would do.  Assuming you can explode the alignment down to lines and arcs.  Drag the arcs to the side for reference.  Use the Fillet = 0(zero) to make all lines connet at their P.I.  Now pedit to one polyline and use Civil 3D to change to an alignment.  Use Civil 3D to add curves and you are done.

Bill

[tcorey]

Once you have the parameters dialog up, you have to go back to the toolbar and pick the Select Sub-entity button. Once you have pressed that button, you go to the drawing and select the curve you want to modify. Its values will now populate the dialog. 

You don't need to explode anything. Civil 3D has the tools to do what you ask without doing that.

Best regards,

Tim