DITCH LINE

[Anonymous]

I need help making the bottom of my ditch follow its own specific profile.  This is a simple cross section with 3:1 slopes on both the backslope and foreslope with a 2' ditch bottom.  I don't know which sub-assembly to use or how.  Can I get instructions about the profile, the sub-assembly, and anything else that makes this work.  I know it's probably easy, but I'm new to C3D and I'm missing the boat on this issue.

[jmayo-EE]

There are SideDitch and Channel subassemblies in the Trench Subassembly toolpalette. They may be helpful.

You can also use generic links to from the desired geometry. I use LinkWidthAndSlope to form retaining walls, swales/berms, etc. Attach a daylight to the terminal subassembly.

I try to design these with a centerline profile.

[ccoles · Accepted solution]

I've been suscessful with the following:

For the ditch assembly, start with the 3:1 slope using a 'LinkSlopeToElevation' link, a 'LinkWidthandSlope' at 0% slope and 2' wide to form the bottom, and a 3:1 daylight link at the end. In the corridor model, use a profile line or feature line to the 'LinkSlopeToElevation' as an elevation target to control the bottom profile of the ditch.  The outer daylight link can be used to form a bench if the ditch line isn't deep enough.