I have two feature lines I want to grade towards each other at different grades until they meet. Is this possible, and if so, how? Thanks.
You need to give a little more destail. Are you wanting to set the elvation of one from the other? See the elevation editing tool on the ribbon
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Yes, this is possible.
Be sure both gradings are in the same grading group. If so, the slopes will intersect automatically if they overlap.
That would be the criterior of you choosing; if they intersect they will do as Tim says
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Okay, I've attached a graphic. I have a CL of a channel and the edges of the lake it runs through. I want to grade out from the channel at 10:1 and in from the edges at 4:1 to a point where they would meet. I'm not having any luck w/ anything I've tried. I welcome all suggestions. Thanks.
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The north side is only a pline?
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So it is. I just hadn't converted it yet. I was having issues trying to the Westerly-Southerly side to work and never tried that side.
So I casn assume iut is also 509.8'?
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I had a very similar situation just a couple months ago. I used a grading object from the outer boundary and then exploded it to polylines so that I could "clean it up". Because it's so jagged, the resulting grading object had a LOT of crossing lines which C3D doesn't like.
Here are two threads you might be interested in.
Don Ireland
Engineering Design Technician
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Another option is to model each of the slope surfaces separately and then use the Analyze > Ground Data > Minimum Distance Between Surfaces command. This will generate a 3D polyline where the selected surfaces intersect. You can then use the 3D Polylines as breakline data in your final surface.
The following images show this done with two different slope surfaces.
Final surface:
A Corridor implementing the LinkSlopesBetweenPoints subassembly.