AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

Active Contributor
Posts: 46
Registered: ‎05-19-2010
Message 1 of 2 (450 Views)

Curb Return Alignment wrt Parent Alignment

450 Views, 1 Replies
04-20-2012 02:35 PM

I am creating a corridor for a driveway and I created two aligments and classifed them as "curb return"- they both have compound curves.  I would like them to be related to the driveway centerline as a parent alignment.  Please see attached.  Is there a way to do this without having to creat an intersection?  (The driveway connects to an existing street.)



Posts: 5
Registered: ‎07-11-2014
Message 2 of 2 (189 Views)

Re: Curb Return Alignment wrt Parent Alignment

07-11-2014 05:27 AM in reply to: jgotsis

My strategy for modeling existing paving across the board is as follows:


1. create alignments where the lane meets the curb.

2. create one assembly with the curb only (see image)

3. create another assembly with the paving only (see image)

4. create a corridor using the alignment created in step one. Apply the assembly created in step 2.

5. create another corridor along your baseline using the assembly from step 3.

6. now use the alignment created in step 1 as your offset target for the lane width and slope for the main paving assembly.


For driveways, I create an alignment at the point where the driveway meets the road. I have the main roads paving assembly use this for the offset target, and then create a corridor along this alignment, with a lane assembly projecting up the driveway side to an alignment along the edge & back of the driveway. If the driveway has curbs, I use the procedure described above to address those. It works great, and the resulting cross sections look really good.




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