Join Thiago Mundim for an in-depth discussion in this video Roofs, part of Learning ArchiCAD.
- On this video we're going to see how to create and add roofs, and to do that we're going to need a new file. So let's go to the roof tool here on the left, let's click on it, ctrl-t, and, very similar to the previous tools we have the same tabs starting with geometry and positioning and here, the first thing we can choose is the height of the roof, but it's actually the height of the reference line. And we're going to see what is this reference line when we draw the roof.
So let's keep it 0 for now. On the right we can choose the structure from, again, generic to composite. In the composite we could choose different composites for the roof. Let's keep it simple, let's keep it generic for now, and you can choose one generic material and we're going to go for tile roof. Below, we can choose the construction method from single plane to multi-plane and we're going to see again the difference in a bit.
We can also change the angle of the roof in degrees or percentage, whatever you prefer. So I'm going to keep it degrees here and I'm going to lower it to, let's say, 25 degrees. Also you can choose how the edge of the roof looks like, if you want it perpendicular, or vertical, or at a specific angle. I'm going to keep it perpendicular here. Let's press OK and see how we add a roof. So, I'm right now on the multi-plane method and here you can choose how you want to draw this roof, by drawing a polygon, or rectangular.
So let's keep it polygon, and let's draw the shape of a roof. So I'm going to draw here a generic roof let's say 8,000 here. Ok, whatever shape we want. And when I close this polygon, ArchiCAD will automatically figure out all the planes for us. So if I take a look at this on the 3D by pressing F3 you will see that all the planes are already calculated at the same angle. What you can do here now is select the arrow tool select the roof and you can start editing it.
So, for instance, I want to get this edge here and move it by clicking here on the pet palette and changing it all the way to the edge. So now ArchiCAD, looking the 3D again, ArchiCAD has removed that plane for us. You can do the same thing here on the 3D. So, for instance, I want to select the roof here select this edge and change it all the way to the end. You can also choose the height of a ridge. So, for instance, by clicking here and typing a different height, let's say I'm going to change one meter you notice that ArchiCAD will calculate all the intersections for this new angle here.
Let's go back to the floor plan and let's delete this roof and let's see how we can draw a single plane roof. So, again, I'm going to select the roof instead of choosing multi-geometry let's choose a single plane. And this is actually what we use most of the time. So, on this case we're going to draw plane by plane. Again, we can choose a polygon method or rectangular and the first thing ArchiCAD is going to ask us is to draw the pivot line of the roof and that's the line where we set up that height before.
Let's see how it works. So, for instance, I'm going to draw a line here after any dimention and now ArchiCAD is asking us "click where the upward pitch of the roof is going to be" so the roof is going to go upwards on the right of my pivot line so I'm going to click here on the right and now I can draw the polyline of my roof. So I'm going to draw something here. Just a square plane. OK, good.
So, if I select this roof you will notice that my pivot line is there. This never gets printed, so don't worry about it. Let's put here a temporary section so we understand what is this pivot line. So I'm going to click on the first point, and the second point of the section, and towards which direction the section is going to look at. So now let's open this section, at 01 and that's a pretty steep roof. But what I want is, remember that on the settings of this roof we choose 0 here for the pivot line and that's where the roof is touching this 00.
So, for instance, if I go to this roof and change this height to one meter, this roof pivot line will go up one meter. And that's how important this reference line is. So, for instance, if I change here the position of the reference line you notice my whole roof pitch changed. So if I look again on the section I will look at that straight line and the roof is going down there. So going back to the plan if I change again to a different direction for instance let's say here you will see that my roof now is going upwards towards the left side.
So if I open again the section, my roof is different and here is the, let's see, one meter, which is probably somewhere in here. I'm going to back to the original here and, one good thing about the way that we do roofs in ArchiCAD is that you can click on an edge, offset, you can click on a point, change the position of it, you can add or subtract polygons like this, and if you look at it on 3D ArchiCAD calculated everything for you.
Right? So it's pretty easy to draw the roof's slant and just set up the angle and everything's calculated.
ArchiCAD expert Thiago Mundim shows you how to use the ArchiCAD tools needed to model, document, and publish your design. He begins with covering the interface basics, navigating your BIM model, and modeling essential architectural elements in 2D and 3D. Then he outlines how to document your design, adding sections, elevations, dimensions, and details. Finally, you'll learn how to set up layout sheets and publish designs in common formats such as PDF and DWG. Thiago also shows you how to export drawings to the free BIMx app for tablets and smartphones, so you can take your ArchiCAD work anywhere.
- Setting up projects, stories, and working units
- Importing other drawings in ArchiCAD
- Working with walls
- Creating slabs
- Adding windows, doors, roofs, and stairs
- Creating zones
- Editing sections
- Setting up drawing dimensions
- Working with the pen set
- Adding views and schedules
- Publishing ArchiCAD projects