From the course: AutoCAD Civil 3D: Site Design

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Working with infills

Working with infills - AutoCAD Civil 3D Tutorial

From the course: AutoCAD Civil 3D: Site Design

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Working with infills

- [Instructor] There's a rather quirky an mysterious type of grading object called an infill. Let's learn what it's all about. Take a look at the pond grading group in this drawing, and at first glance everything looks pretty good. You can see the grading objects that define the pond. You can even see contours, and if I hover my cursor over one of the contours, I can see that I've got a surface called Pond and it's giving me elevations. In this case, 2156.05. But if I move my cursor into the center of the pond, I don't get any pond elevations. I get other surfaces, but not Pond. And if I look a little more closely into the 3D view, it actually appears as though there's a hole in the bottom of the pond. And actually, there is. Civil 3D grading groups are very efficient and they listen very well and they obey the rules very well when you ask them to build surfaces. And if there aren't grading objects present, then it will close off the surface and create a boundary, which is exactly…

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