![]() What I tried was to set the working plane to the "cut end" of the wall, and draw a 2d polygon:Ĭonverting this to NURBs gave me something that the solid section command would not let me use, but converting it to a 3d polygon worked. This gives me a solid that I can subtract, which cleanly removes a section of the wall, but not the parapet.īut you have lost me a bit in the second part of your description - what do you mean I should use to do the solid section - this needs to be a surface, no? In fact, it seems possible to do it slightly differently than your suggestion: I can extract a surface from each side VW will not let me use the loft command on these but if I convert them to 3d polys, then back to NURBs (why is this?), then it will, and I can use the "no rail" mode. In the next video, you'll learn how to analyze a surface.So, I managed to get the solid I wanted in my first post. So that's how you combine surfaces in Civil 3D. So now the entire project is being represented by one surface, and one set of contours. So one more time, I'll click edit surface and then paste surface. We've got one last little surface to drop in. And you can see we get the result that we want. With the end result that I want is for the pond to come in after the lots interior surface so that it's data overwrites lots interior. So I can either pick the pond surface and bump it down, or pick this one and bump it up. All I need to do is put in the pond surface after the lots interior surface and that will fix the issue. And then I want to go to the definition tab, and you'll see this order of operations down here. Our surface is still selected, I'm going to come up here and pick surface properties. So because we pasted in the pond surface, and then after that, pasted in the interior lot surface, interior lots has overwritten the pond surface, there's an easy solution to that. So what happened? Well, the way the pasting surfaces works is the last surface in wins. They disappear and they're overwritten by some haphazard contours that are obviously not valid grading. You can see them here and up here on the right. Now watch what happens to the pond contours. And this time I'll pick pond and as we would expect the pond contours now, enter into the picture. So I'll just go up here to edit surface and then paste surface. And because of the boundary that's applied on the corridor surface, we see that all those interior contours have been cleared out. Here you can see the very well defined contours along the surface. Now let's zoom in and check out what has happened. This is the surface that was defined from our corridor. ![]() Another way to launch the paste surface command. And I'll go up here to edit surface on the ribbon and click paste surface. This time to get started, I'll click one of the contours of the surface in the drawing. ![]() If we look in the interior, we just see some haphazard contours, kind of stretching across the interior of our project. And you'll see right away in the drawing that we get contours for these exterior lots. The first surface we're going to paste in is lots exterior. So what we're doing is we're starting with an empty surface and pasting other surfaces into it to build it out. I'll right click edits and pick paste surface. I'll expand it out, then expand definition. Next I'll go to the FG final surface over here in prospector. So even though we don't see any contours, those surfaces are here. Now currently, all the other surfaces in the drawing have been set to a no display style. I'll call this FG final and for the style, I'm going to choose a design contour style contours one foot and five foot design. ![]() I'll start by right clicking surfaces and then picking create surface. Now as I said in the opening, there comes a time when you want to put this all together as one final FG or finished ground surface. ![]() In fact, if we go to prospector and expand surfaces, we'll see them all here. Currently, these are all different surfaces, there are five or six different surfaces in this drawing. As we look at this drawing, you'll notice that we've got the grading all completed, all of the lot grading is completed, you'll notice an interior pond here, there's even a little area here that's been graded along the daylight line between lot 73 and 76. That's what we're going to talk about in this video. At some point you'll need to combine those parts into one overall surface. When grading a project, you usually don't design the whole project at once. ![]()
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