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About surfaces

About surfaces - AutoCAD Civil 3D Tutorial

From the course: Cert Prep Autodesk Certified Professional: Civil 3D for Infrastructure Design

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About surfaces

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- What is a surface? And why is it important to civil 3D? Let's discuss. A surface is a 3D representation of a patch of ground. In fact, if I were to click on one of these contours, right click and pick object viewer, you can see that the contours actually represent a three-dimensional object, that is our surface. Now this surface looks a bit irregular because it's representing existing ground. But if we were to take a look at the surface down here, we would see something a little more uniform because it represents proposed ground. Here we can see, the road and the lots adjacent to the road. A surface is most often built using a triangular irregular network or tin. Let's see what that looks like. I'll change the style of the surface to one that just shows these 10 lines. And there, you can see the different triangles that make up the surface. The triangles are formed by connecting points that are closest to each…

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