how to grade from multiple auto corridor featurelines

[alexRR6ZB]

I've got multiple corridors and regions. i extracted auto corridor feature lines from the back of curb. this results in multiple dynamically linked feature lines. pictured below 1 that is selected at the top of the intersection. as far as i can tell they cannot be joined into one continuous feature line. When i go create grading will i have to use each feature line or is there a way to grade from multiple feature lines?

[Neilw_05 · Accepted solution]

You are experiencing one of the deficiencies of the extracted featureline workflow. No there is no way to create a single grading from multiple featurelines. Your options are:

1: Create multiple gradings

2: Create a featureline that spans the multiple pieces and drape it on the corridor surface, assuming you have a single corridor. If you have multiple corridors, build a composite surface and drape on that. You wouldn't need extracted featurelines for this option. In fact they might just get in the way considering how sites interact. Also, be aware that if your corridor has vertical curves, you will need to densify the draped featureline to follow the curves. Rather than letting the software add elevation points at all the triangles, instead just add them manually at some interval, like 5 or 10 feet. That way you won't get so many points which degrades performance.

PS, a third option is to use them as baselines in another corridor and apply assemblies. The corridor will then generate a contiguous surface from all the pieces. It's a lot of work but it is an option.