Join Thiago Mundim for an in-depth discussion in this video Terrain mesh, part of ArchiCAD Essential Training.
- [Voiceover] Now let's add a terrain for our project. So I'm going to go here to the basement and I'm going bring a .dwg file that I have here on the exercise file called Terrain Contours. I'm going to just drag and drop in here. ArchiCAD is going to ask what was the unit that we used when we did this drawing? It was millimeters. And here we have our 2D drawings with the contours. I know that this was the zero zero point so I'm going to drag it to the zero zero point of our project as well.
And then I'm going to explode this into our current view. I don't want to keep the original, and make sure you choose here for layers, Use Drawing's Layers instead of importing all the layers from the .dwg. Now I don't have the original anymore but I do have all the lines here grouped together. Notice that this is a very dense group of lines which will generate a mesh with a lot of polygons which is not a good thing because it might make our drawing heavy.
Ideally, we would redraw these using the Spline Tool trying to match as much as possible those existing contours and this would generate a lighter model. But then the video would become too long so I'm just going to go ahead and use the existing points here. So, let's draw our mesh. I'm going to open here the Design tools and then select the Mesh tools. We have some different methods for adding the mesh. I want to add the rectangular, so I'm going to select the first and the second point of this mesh.
I know the mesh came in front of the polylines so I'm going to right-click here, Display Order, and then send this Mesh to back. It doesn't seemed to have worked so let's do it again. Send it to back. There we go, now it worked. So, if we go to the 3D window we should see our mesh there as well. Let's select this mesh and check the settings for it. Go to the Settings dialog, and here we can see that the mesh is placed 200 millimeters below the basement level.
It has a height of one meter. If I press OK here zoom out a little bit more you're going to see that this one meter corresponds to this height of the mesh around. Let's go back to the Settings. You can choose to have this solid slab or with an open bottom, or just the top surface here. Notice that we have as a default here an override for the top surface to be a Grass - Green, and that's why we see this green in here. So let's press OK, you will see that the slab disappears, now we have only the top mesh.
Now it's time to add the contours. I'm going to go back to the floor plan and to do that, all you have to do is follow those steps. Select the Mesh. Make sure you have the Mesh Tool also active. Hold the space key so you have this magic wand. And then click on the contour. Make sure you choose the Fit To Use Ridges option and then press OK. Now that polyline is part of our mesh. So I'm going to do the same with all the other contours.
Now we can delete the original .dwg. I don't need it anymore. And let's start adding some height. So, we select the mesh. Select any of those contours, click again in any of the points, and then choose here on the pet palette the zed option which is to give it a height. So I'm going to add a one meter height for this first column, and make sure you select this Apply to All option. So like this, all the points on this curve will be one meter high. I'm going to press OK and if we look in the 3D again you will see that one line is already raised by one meter.
I'm going to go back to the floor plan and do the same with all the other contours. So this will be two meters. This will be three meters, and so on. Now, if you go to the 3D it's looking better but as you can see here the corners are still on their original height so I can select them here on the 3D, and then make sure I have the zed option on, and we can adjust those points to other point next to it. Again, notice how many polygons I have.
It's not ideal. This might become quite heavy on your computer so make sure you redraw those contours using the spline first. Now one thing I can do is go to the Settings of this mesh and then choose All Ridges Smooth and this will look a little bit better. Now, if you go back to the floor plan, one way to add a hole here for the house is by selecting the mesh. I'm going to click in any corner here, cancel the height and then choose the minus option and now we can draw a polygon here that we want to remove from the mesh.
So I'm just going to draw around this area. I'm also going to remove a little bit more here around, but this can be edit later. There is another way to do this hole which is by using a solid operation but that's a topic for another video. So let's see again in 3D how this mesh looks. We can also select it here, re-position if you want to, or go back to the Settings and change here the height to a better position.
So go ahead, give it a try.
- Opening and navigating an ArchiCAD project
- Setting up working units and stories
- Importing drawings
- Modeling walls, slabs, doors, and windows
- Grouping and ungrouping objects
- Creating sections and elevations
- Working with dimensions
- Publishing drawings
- Modeling and documenting detailed designs
Skill Level Appropriate for all
Q: This course was updated on 06/14/2017. What changed?
A: The following topics were updated: using the Stair tool and working with objects. In addition, new videos were added that cover what's new in ArchiCAD 21, stair settings, working with railings, railing settings, using the Multiply tool, and 3D styles.