AutoCAD Civil 3D
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Re: New to civil 3D modeling.. Help with channel design
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Two ways to approach the channel bottom and lining materials:
- You could use one of the lane subassemblies, like LaneSuperelevationAOR and re-purpose the default codes to what you need. Pave1 = 10" fill, Pave2 = 6" fill, etc. You'll need two copies for each side, with the outside one sloped to 33%
- There is also a GenericPavementStructure sub which you can stack up to form your material layers. This would allow you to customize all of the codes but it's going to require more work to set up the assembly properly, so that all of the layer widths match etc.
For the daylighting I would probably use DaylightGeneral. It will allow you to set up the grade breaks in the section automatically.
Re: New to civil 3D modeling.. Help with channel design
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Alright, I think i got the channel subassembly down (using the lanesuper you suggested. Now the daylighting is confusing me as there are so many options.
The image shows the assembly i currently have, In the daylight subassembly, the only thing i changed was
Cut test point likne - 1
Cut 1 slope - 3:1
but not seeing it change anything?? Do i need to have a width for the cut link?
For this particaular section i just need it to have a 3":1 slope till it hits EG.
Re: New to civil 3D modeling.. Help with channel design
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Your best bet at this point is to read the help file tor the subassembly and figure out how you want it to work. Start at the Behaviour section first, then you can go back and decide which parameters you need to change.
Re: New to civil 3D modeling.. Help with channel design
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I have been, its just confusing to me. I will continue to work at it or maybe use the linktosurface for this portion.
thanks for the help and patience ![]()
that goes for everyone who helped me out
Re: New to civil 3D modeling.. Help with channel design
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Here's a set of parameters which should work for you. With these settings the sub will not attempt to build any ditch. It will start by testing for cut or fill. If it is in cut then it will apply the Flat Cut slope up to the height limit. In this case I've set that limit very high, so the assembly should use this slope all of the time. If the assembly is in fill then it will apply the Flat Fill slope in the same way.
If the Flat slopes don't work, either because the sub hits the height limit or it runs off the edge of the surface then it will switch to the Medium slopes. If one of those doesn't work then it will try again with the steep slopes.
Re: New to civil 3D modeling.. Help with channel design
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For this particaular section i just need it to have a 3":1 slope till it hits EG.
Use the DaylightMultiIntercept subassembly. Don't use the Generic Links because your earthwork will not be correct.
Fred Ernst, PE
C3D 2013 SP1, C3D 2014
W7x64; i7 8gb; Radeon HD 5700
www.ernstengineering.com



