Good Morning.
I'm having an issue getting OpenRoads to grade a basin in the manner I want to grade a basin. What I want to do is take a element provided from another team member; for instance, an edge of sidewalk or a edge of shoulder (a 3D element with various elevations) and grade down at a 3:1 slope to a set elevation (for this example, let's say 100'). I've successfully draped a line onto an existing/proposed terrain using the Profile From Surface tool; and I'm able to offset that element at a 3:1 slope using the Profile by Slope to Element tool. This gives me an element that is parallel to my first element at a stock distance below it (so for instance if I'm offsetting 12 feet horizontally and coming down at a 3:1 slope, the resultant element is 12' away in the xy plane and 4' below the original element in the z direction). What I want is for that resultant element to be drawn at elevation 100' and cut off at that point.
All of the tutorials that I've found work in the opposite manner; where we grade a basin from a set pad elevation (bottom of basin) and then try to shift that close to a previously graded cut/fill slope. That's great for a lot of applications, but what I'm trying to do is maximize basin volume in a tight area (e.g. for a roadway basin in a tight ROW). The best way I know how to do that is to grade from a set roadway element and start there. I can't seem to find the tools or any post explaining how to grade to a set elevation using a set slope in the forum and am hoping someone has an idea.
Thank you for your time and input.
Grady,
I would think there would be a few ways you can do this. Here's one way....
Place a Linear Template on the edge of sidewalk/shoulder. This template should be an end condition with none of the End Condition Properties checked on for the points. Have it constrained with the 3:1 slope and any valued vertical constraint. Then, use the Create Point Control command to place a Vertical point control on the bottom point with Elevation and Grade. The Grade would be 0 and the Elevation 100. This will maintain the slope constraint and move the vertical constraint to keep it at the 100 value.
Holly
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Thank you for your advice Holly, I will test this out. Do you know if there is any way to apply the create point control command outside of using a template? We're in the midst of transitioning from InRoads to OpenRoads and the comfort level with use of templates just isn't there yet as a firm.
I really appreciate your help.