Contours on Corridor Surface

[Anonymous]

Hello,

I am currently working on a street reconstruction design along a curve alignment. I created superelevated assemblies, did a super elevation table, created a corridor, the section editor looks great. However, when I created a corridor surface and displayed the countours they do not seem to behave the way the section editor shows it. In the corridor surface properties, I inputted link and feature lines data, including datum, top, top of curb, and crown. It seems the contours are selecting the elevations from edge of pavement to edge of pavement. However I have  a crown in the middle. I even changed the point code of my assemblies to see if the countour could show the crown break in the middle. 

Please help me figure out how to show the crown point on my surface countours. 

I have attached an image of how my corridor surface contours look like. 

I am using Autocad Civil 3D 2015

THANK YOU! 

[Joe-Bouza]

You may have over done it with the links and feature lines.

If you want the finished surface for example, I only add top link, check the box to add as breaklines and select overhang correction from the drop down. You definitely do not want the datum links in the finished surface data.

[Anonymous]

Thank you for your response. 

I apologize but I forgot to mentioned that I have tried the option you mentioned as well. I have also tried different variations. 

Other than data input, what else do you think it can cause the issue I am having? 

Thank you for your time. 

[Joe-Bouza]

Can you post the file or dropbox it?

[Anonymous]

 I have attached the drawing and promoted the data shorcuts so you can see what I have done .

Hopefully you can help me solve the issue. I appreciate it. 

[nilesh33 · Accepted solution]

Hi,

If you check the corridor closely, lane width "LaneSuperelevationLEFTINSIDE" becomes zero. becasue of wrong offset target. Check offset target.

Currently it becomes single crowned pavement. If you would like to have same cross fall in total pavement width then contours are perfect.

if you have crown point in middle & diffenerent cross fall on pavement then it will look something as I have attached. (I have chaned offset target for  "LaneSuperelevationLEFTINSIDE" to Alosta Crown.

Your surface defination is almost correct. If you want 'top' surface, then Top surface & crown are good. add codes from curb as well.

Do we need datum code in top surface? if you need datum, create new datum surface.

"Please accept as solution, if you found it is usefull"

[Anonymous]

Great! 

It did work. Thank you very much. 

So I guess my understanding about assemblies and their targets was not right. Correct me if I am wrong, so when I create a lane assembly, I know I can connect it to another lane assembly or to a baseline. For example, when I connect it to another lane assembly, that means my only target offset I would have would be the outside point of the lane correct? For some reason I thought I had to target the sub assembly  on both ends.

Thank you! 

[nilesh33]

Hi,

You are almost there. Only need to think about 'attachement point' of 'subassembly'

For Lane width subassembly, you can give the offset target opposite side of the 'attachment point'. 

In your corridor you have attached 'lane width' subassembly to 'assembly' and then attached other lane width with curb.

My suggestion here about back checking your corridor, you should plot sections (draft mode) instead of looking into section editor. (At least I follow the same, since you can put other alignments into sections to check)