From the course: Autodesk Civil 3D 2021 Essential Training

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Understand corridors

Understand corridors - AutoCAD Civil 3D Tutorial

From the course: Autodesk Civil 3D 2021 Essential Training

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Understand corridors

- [Instructor] Corridors are used to model 3D linear features such as roads, ditches, dams, and many others. Before we dig into creating corridors, let's learn a little bit about how they work. You spent the last four chapters working with alignments and profiles. And as you now know, an alignment represents the path of an object in the xy-plane in 2D, and a profile represents the path of that object in the vertical axis, or all of the elevations or Z values. What happens when you create a corridor is that you combine the alignment and profile, so you combine the horizontal and vertical into a three-dimensional path, and then you insert what's called an assembly along that three-dimensional path. It sounds like magic, but let me show you how it works. In this three-dimensional view on the right, you'll see if I zoom in closely, we've got this dashed line here. This is something called a 3D chain, and it's not…

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