Grading to surface/daylighting from complex corridors

[vinceroux]

Goal:  Model stream channel with 4 assemblies, everything needs to be dynamic to adjust alignment, corridor.

Problem: Have many regions, have many empty transition regions between different assemblies and need to clean up many loose ends with feature lines (not dynamic).  Then decide between daylight subassembly or grading from dynamic orridor auto feature line.  Maintaining dynamic interactions greatly impacts resources and slows down autocad, and daylighting is somewhat incomplete from my point of view.

Question: Do you use daylighting to connect corridor with EG, or do you grade from dynamic corridor auto feature line?  If you daylight, how do you address the gaps between frequency lines?  If you grade from feature line, how do you prevent autocad from re-modeling the corridor and re-grading everytime you add so much as a polyline?

I stopped using daylighting in my assemblies when I realized that the final product is incomplete between feature lines.  This is fine for the corridor itself but if I'm connecting to EG I need to see proposed contour lines that connect with existing contour lines along the entire length of my corridor, not just at frequency lines.  And I'm not going to add frequency lines every 0.1 ft for obvious reasons.  How does everyone else deal with that?

Instead I have been grading from dynamic corridor auto feature lines but found that for complicated projects, like 1 mile of stream channel modeling with lots of hairpin turns and multiple assemblies and transitions between, I have so many dynamic feature lines and grading objects that as soon as I draw a polyline everything rebuilds, remodels and regrades and it takes 30 seconds for autocad to stop thinking.  I've used this approach on simple corridors and it works great and produces a result that I like more than using a daylight subassembly.

I've brainstormed on how to separate objects into different drawings to try and help autocad but haven't found any solutions... I know I can remove the dynamic link but is that really what it comes down to?  I might as well draw contour lines and skip C3D...  Additionally, the corridor auto feature line connects regions across empty transitions so the solution I found was 1 baseline per regions between transitions which again is a time consuming process. 

I'm stumped.

[Anonymous]

I have never had luck with the daylighting options. 

For a situation like this I, personally, would use the grading tools. However, transitions are difficult using grading tools and having 4 different assemblies would make for a headache.

My only sugestion would be to use "LinkSlopeToSurface" under the generic tab. Instead of using a daylighting option.

If you post the drawing I might be able to offere more solutions.

[cwr-pae]

If you absolutely have to have proposed contours exactly meet existing, as the final step before sending the drawings for bid/construction, using the slope to surface link Andrew suggested, you can pan along the corridor and add a section near needed contour matings. This usually gets the job done after a little practice to see where the added section needs to fall.

[vinceroux]

I don't understand how one can get away with proposed contours that don't meet existing... please explain how your permits are approved.

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@Anonymous wrote:

you can pan along the corridor and add a section near needed contour matings.

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Although not the solution I am looking for I will try this once and see how I like it.

[cwr-pae]

My guess is the reviewers here are less **** about exact closure on surfaces. As long as they show the intent of the proposed construction we dont have any problems.