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Hi,
I'm trying to create some 'basic' 3d solids to assist with explaining some concepts for a report relating to a road drainage project. The section will have identical concrete barrier each side of a consistent width roadway. The cross section should be a perfect mirror. It follows a 3d alignment that has both vertical and horizontal curvature in places, created by others.
Though I am sure there are better packages / ways to do this, it's something I am somewhat familiar with. I intend to increase the transparency of the road aspects to see the drainage underneath. So I wanted to have the concrete barriers as solids and create a thin crust (perhaps 0.05m thick) for the road surface.
My problem is I cannot get solids to extrude / sweep. I figured I needed the extruded shapes to be perpendicular to the path at the start. So I took the 7 points of interest then created offsets to a common Z lower than all 7 points (say RL 13.0). I then drew 3d poly's from each of those 7, RL 13.0 points and made them perpendicular to the actual 7 lines, so that I thought I would end up with the shape (crudely) sketches in green, rotated backwards to be perpendicular to the start of the section. I attempted to extrude and sweep this along several of those actual 7 (3d) polylines. It would not work and I get error code 40021.
I then broke it down and just kept the rotated shape for the concrete barrier on the left. That extruded along line 1. So I tried the exact same thing in reverse on the right hand side, same shape in reverse, extruded along Line 7. Error code 40021. From what I have read this can imply an overlap, yet there are no real tight curve along the road alignment?
I cannot understand how it's (in my mind) the exact same procedure yet it doesn't work. Are there fundamental things I am not understanding when it comes to using extrude and sweep?
Thank you in advance
Solved! Go to Solution.