I have a ditch and a road that need to follow separate profiles but be integrated with each other as a single corridor and the ditch's 3:1 slope needs to meet up with the road's 2% slope. Is it possible to have the two subassembiles target each other without having to create a dummy surface or a feature line for targeting to? Attached is a snapshot of the road and ditch configuration.
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My ditch will be at a grade of ~0.15% with periodic drop structures at 10% to correct for changes in elevation, while the road is to be a minimum of ~1.2m above original ground, wouldn't the DaylightBasin subassembly adjust its horizontal location to meet the elevation target and introduce jogs?
If you wanted to maintain the 3/1 ditch foreslope and the 2% shoulder slope, and allow the intersection point to move as the ditch profile changes then LinkSlopesBetweenPoints may be appropriate. In this case the ditch width parameter would be zero. Set a marked point at the edge of the lane then attach the sub to the inside edge of your ditch.
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Jay, I need to maintain the 3:1 slope for the ditch and 2% for the road.
Steve, that sounds like what I'm looking for. Will try it out this afternoon.
LinkSlopesBetweenPoints solved my problem, and a bit of searching led to a descriptive post and sample drawing on AUGI's forum.
Thanks Steve, much appreciated!