From the course: AutoCAD: 3D Architectural Modeling

Cut window openings - AutoCAD Tutorial

From the course: AutoCAD: 3D Architectural Modeling

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Cut window openings

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- [Narrator] Now we need to cut holes in the second floor to accommodate the windows. Fortunately this is going to be easy do because we have elevations arrayed around the entire model. Showing us where the windows go. Let's start on this elevation right here. And let's consider this window right here. So I'd like to draw a rectangle on that sketch. To do so I need the xy plane to be parallel to the sketch. I can't use dynamic ucs because that only works when you have a surface. And we just have 2D geometry here. So we need to rotate the ucs manually. I'll do so by typing ucs enter. And then in this particular case I need to rotate the system around the y axis. I'll type y enter enter. And that has the effect of rotating the system ninety degrees around the y axis. And now the xy plane is parallel to the sketch. I can then draw my rectangle. But before I do so I'm going to set the current layer to be on dash wall two. For the second floor walls. And then I'll draw a rectangle from the upper left corner and I need to make sure that object snap is on. So I'm going to snap there to the endpoint there. And attach the other end of the rectangle over here. I need to be very careful that I don't snap to this inner detail geometry which happens to be on layer a-glaz. Let's turn that off. We don't really need to see that right now. Because we already modeled the windows on the first floor. And we're just concerned with cutting holes in the wall right now. Now I'm going to extrude the last object that was created. L enter enter. I'll extrude it back about twenty feet or so. It doesn't really matter how far. Then I'll copy this tool. From the upper left corner of the opening to the corresponding place on each one of the openings here on the second floor. And then I will union all of these together. And it doesn't matter if my selection includes the lines because union only works when regions are solid objects. And then I'll move this object over. Until it intersects with the walls. And then subtract from the walls. Enter. This tool object. Enter. And I've successfully cut the holes there. Now we need to do something similar on this elevation. However, the ucs needs to be rotated again. This time I need to rotate the system around the x axis. Ucs enter x enter enter. So now the xy plane is parallel to this sketch. I can then draw a rectangle. Extrude it back. I'll type ext enter. L enter enter. Pull it back somewhat. And then copy that into all of the window openings on this second floor. And when I'm done copying I'm going to union these tool objects together. So I'll orbit around so I can select that more easily. Union all of that together. And then move the objects over until they penetrate through the wall. And then subtract the wall enter. The tool enter. Moving on we have some addition windows over here. This time I need to rotate the system around the x axis again. Ucs enter. X enter enter. Rectangle. Extrude last. Copy. And click all these corner points. Union uni enter is the shortcut. Move. Subtract. And then over here we have a custom window. Which we can't make with a rectangle. So I'll draw that as a polyline. Pl enter. And just trace around the boundaries there. And then type c to close. Extrude. Last. Move. Over till it intersects with the wall. Subtract. And make the hole. Finally we have this elevation which shows two large assemblies of windows that are going down to the floor. So I need to rotate the ucs again. Ucs enter. X enter enter. Rectangle. Extrude last. Copy. Union uni enter. Move. And then subtract.

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