From the course: AutoCAD Civil 3D 2018 Essential Training

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Creating surfaces: Boundary definition

Creating surfaces: Boundary definition - AutoCAD Civil 3D Tutorial

From the course: AutoCAD Civil 3D 2018 Essential Training

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Creating surfaces: Boundary definition

- [Narrator] Now as the software goes through using the algorithm to connect the points, it may connect points using triangles that really are stretching beyond or even going across in such a way that it interpolates inaccurate data. And so what we are going to do is we are going to delete triangles using boundaries. We're going to establish boundaries for our surface. So let's go ahead and open up our boundary exercise file. 0404 surface boundary. We see a few different green poly lines here. We have one here, we as well have this one. This is the current boundary of the surface. Now if we start looking, you see the triangles. The triangles are crossing here, but this is the last known survey point, last known survey point. So all of this informaiton is inaccurate. Same here. Survey point, survey point, survey point, all of these contours are inaccurate because the triangle came across here. Of course that became part of the model, so these triangles really need to go away. And so…

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