From the course: Autodesk Civil 3D 2025 Essential Training

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Create a corridor surface

Create a corridor surface - AutoCAD Civil 3D Tutorial

From the course: Autodesk Civil 3D 2025 Essential Training

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Create a corridor surface

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- [Instructor] As you learned earlier, surfaces are a fundamental part of the Civil 3D model and serve many functions. For that reason, we need to derive a surface from our corridor. Let's see how that's done. Before we jump into creating a surface for our corridor, I want to talk about subassemblies a bit. In fact, I want to show you some things about subassemblies. I'm going to launch the help. And let's go to that basic lane transition subassembly. In the search box here, I'm going to type basic lane transition. Press enter, and you can see the link for it here. I'm going to scroll down the whole way to the bottom to where this coding diagram is. Now you should recognize the shape. This is the shape of our lane subassembly. But what we're looking at here are the components, the fundamental components that make up this shape. You can see P1, designations, P1, P2, P3, P4. These represent points. These would be the corners of this shape. If you connect two points, it makes a link. So…

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