Superelevation+Surface

[rade_tomovic]

I have created some corridor, applied superelevation and created corridor surface. In the superelevation area, contours looks like zig-zag linetype (don't have better describe for that). I tried to add more frequent corridor, and that resulted with zig-zag, but smaller. With corridor frequency of 0.1 m it's almost invisible, but, is there another method (like smoothing surface) to make a surface looks nicer?

[Jay_B]

Please post a picture showing the problem area of the Corridor.

[rade_tomovic]

ok, here it is. Situation is even worse where I have widening. 

[david.zavislan]

There is a surface smoothing command in the surface editing operations.  You can access it by right-clicking on the Surface's Edit branch in Prospector.  You can read about it here:  http://docs.autodesk.com/CIV3D/2013/ENU/index.html?url=filesCUG/GUID-D0F00E0D-A71E-4363-81BF-3092890...

[nilesh33]

Hi,

While creating surface from corridor, have you added featurelines (data type) with sepcific code.

you can try with adding featurelines; offcourse if you have not added them earlier.

[rade_tomovic]

Surface smoothing just create smoth zig-zag  I didn't added any feature lines, but I have added some polylines as a hor. offset target. Why I need to add some feature lines, how is that connected with superelevation?

[mathewkol]

I have an idea. Would you please attach the DWG?

[rade_tomovic]

Here it is. I cleaned corridor, cause maybe I didn't create assemblies correctly. White outer lines are ETW, blue are median islands and grees is triangle island for right turning lanes. Superelevation data is manually added, as you can see it at tabular editor. Medians island is always at 0% grade. I have also one more question, and that is how to create assembly at point where median island cross with alignment (red circles in dwg). I have created one mini-lane for part between right median edge and alignment, but there must be a better solution.

[mathewkol]

Your corridor has no data.

[rade_tomovic]

Really sorry, I've uploaded wrong version. Here it is. Keep in mind that I am C3D beginner, so if you have any other sugestions, I will be glad to hear and accept it 

https://www.dropbox.com/s/8ci7x7id1rruaco/Intersection.dwg?dl=0

[mathewkol · Accepted solution]

The contours in your data set look better than the images you posted in an earlier post.  These contours look pretty good.  They are a little jagged in places, but it's sometimes tough to get them perfect.  if it were me, I would be happy with these.  Contours are just an approximation and are always interpolations.

The reason contours are not perfect, is often caused by long skinny triangles.  Creating your assembly so that squarish triangles gives the best contours.  Sometimes this is easy and sometimes not.

Matt

[rade_tomovic]

I have created more frequent corridor, that's why they look better. I know what kind of process is behind creating TIN and contours, and I think that these non-smooth contours is from too precise alghoritm in C3D. Just like creating splines, splines looks nicer when distances is greater between vertexes, so C3D is actually to precise, and need some parameters in smoothing options like min dist between vertex, then you can adjust look of contours just like you want. Tnx anyway for replies.One method for smoothing is also manually inserting points at middle point of triangle edges, but this is slow and anoying 🙂