From the course: Autodesk Civil 3D 2025 Essential Training

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Add surface boundaries

Add surface boundaries - AutoCAD Civil 3D Tutorial

From the course: Autodesk Civil 3D 2025 Essential Training

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Add surface boundaries

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- [Instructor] Applying boundaries is another way to make your surface more accurate. Let's take a look at how they work. If we look at this top right view port, we see some areas where we have contours passing through the buildings. And if you've studied how to do a survey, topo drawing or anything representing existing conditions, this is something you wouldn't want to have. If you think about it, there shouldn't be surface data or contours inside the building because the ground isn't exposed there. You wouldn't be able to locate the ground. So how this should look in the final drawing is almost like the contours are trimmed at the building face. But we want to take that one step further. We don't want to just trim the contours, we want to remove the data from inside those buildings because it doesn't belong there in the first place. So to do that, we can add boundaries. What I'll do to get started is I'll click the surface to select it and take advantage of my contextual ribbon…

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