Why does Cross Section View in Roadway Modeller show a different slope than on Cross Sections Cut through "Evaluation" menu

Question

I've modelled the surface to have a constant superelevation on either of centerline but the actual surface that is produced shows otherwise. I also am not sure why I have so many components/points on the surface cross sections. I modelled it to only have one on each side of the centerline. Does any anybody know the reason? I want the surface to look like the cross section shown in the first picture above. 
 
 Thanks, 
 
 Giuliana

The Zen Dude · Accepted Answer

Giuliana, what software are you using, and what version is it? In InRoads (V8i SS2 for example) the surface display on the cross sections could have additional points along it if it is using the Triangulation to display that surface line. View your triangles in that area to see if there are several triangle legs that the cross section path is slicing through. On the Advanced tab of the Surface Properties you can toggle on the option to Use Features Only on the Cross Sections. That will create a cleaner surface display and annotate cleaner (and more like you would expect). But that's for InRoads SS2, I don't know about other packages like GEOPAK.

The Zen Dude · Answer

Regarding your thoughts on the Point Controls - there really isn't anything you can do to adjust the Point Controls to address the triangulation. Triangulation will often create 'legs' that get 'crossed' when creating cross sections. If anything, I would toggle on "Transverse Features" when creating the Surface from the Roadway Designer. That will force the triangle legs to fall between the modeled sections. But ...it's not always necessary. Toggling the option to use Features when creating the cross sections is the solution in most cases, that's why that option exists. What is generally lacking is the user review of the triangles that come out of the Roadway Designer and the ability of the user to know if they are correctly formed or not. If they are... then fine. If they are not formed correctly, then the user has to know how to use the software to address them (or not). This could be through using Secondary Alignments, using Transverse Features, strategically adding Key Stations or other things.