So I'll click the command, select an alignment in my drawing. What about some of these other choices? We'll get to create from objects last. So that's from scratch or using the simply create feature line option. Here you see it in 2D view or plain view, and here, we see in a 3D view. And the polylines been completed in my drawing. When I'm all finished drawing the polyline, I can simply press enter or press escape. And again, we'll do a grade of minus two. Finally, I'll need to choose the elevation for that point that I just created. And if I want the segment to be tangent to the curve before it, I'll use the length option. I'll use the default grade which is just Civil 3D remembering what I did last time. And just like with the other selections, I can specify an elevation grade difference or any of those. You can see that it automatically creates the arc tangent to the segment before it. Notice also that I can do an arc, I launch the arc option this time and zoom in just a little bit. And Civil 3D will set the elevation for all of the transition points that I just selected. So I want to slope downward at a grade of minus two. So I'll pick grade and this time I'll say minus two. When I'm finished, I can choose how I want to draw through those points. So I'll pick a point and I'll click the transition option and then I'll click a few more points. Now for this option called transition, I can use a number of points for that. I'll click the difference option and I'll enter 10 indicating that I want this point to be 10 feet higher than the last point. And you can see the new segment that's been created. So I'll click slope and I'll enter a three to indicate a three to one slope upward. You'll see that segment of the feature line drawn. And if you watch over on this side of the screen, I'm actually looking at is 3D view of the same area as I'm looking at here. Click that, and I'll type in the number two to indicate a 2% grade uphill. I'm going to start with the grade option. But I can choose from difference, grade, slope, elevation, surface, or transition. You'll notice right now, the default is specify elevation difference. Here, you see the same behavior where I'm prompted for an elevation but I have a lot of different ways of providing or calculating that elevation. I'll click surface to use the surface option, select EG as the surface that I want to base it on, and I'll click OK. So for this first point, I can either type in the elevation directly or I can derive it from a surface. This command is kind of like drawing a polyline in AutoCAD except that for each point I select, I'm going to be asked for an elevation as well. So I'll click a point here near the road and you'll notice that I'm prompted for an elevation. And then I'm prompted for my first point. I launch the command, select some default settings like the site and the style that I want to use and the layer. The first one is simply called create feature line. And to see them, I'll go up here to the feature line, drop down on the home ribbon tab. There are several ways to create feature lines. Let's take a look at feature lines, a powerful tool for shaping terrain. Grading is the term used for shaping the terrain to represent the finished ground of a project.

How to create a linetype c3d