Learn how to create a floor and a roof for your building design in a simple and efficient manner. The process includes drawing boundary lines, defining the type and thickness, as well as resolving common issues like intersecting lines and overlapping lines.
Key Insights
- The construction of a floor starts with drawing a boundary line and defining its type, which helps in determining the thickness and materials used. In this instance, a generic model is used.
- When drawing boundary lines, it is crucial to follow the basic rules: they must be continuous, cannot intersect, and cannot overlap. Any error in this aspect leads to issues that need to be resolved before proceeding to the next step.
- Choosing the type and thickness of your floor is essential and must be done accurately. In this demonstration, the type of the floor was changed to a generic five-inch slab on grade dimension to match the structure and thickness of the floor.
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The next step in this project is we are going to create the floor and the roof associated with this building. First things first is going to be the floor and floors are created by drawing a boundary line and then defining it as a type that will help us define the thickness and eventually the material or series of materials that make up the construction of the floor. For this one we're just going to use a generic model but we are still going to have to define the boundary line of the floor.
If we go to our architecture tab, floor, the first thing we need to do is define the boundary. So you can see here that we've been asked to create a boundary line and when we look on the bottom left of the screen here you can see it says pick walls to create lines so that's a little helper that says hey this is what's next before you can move on to the next step. In our case here it's just a simple rectangle so we will use the rectangle sketch tool and we'll just pick an end point to an end point.
Now it's very important when you draw boundary lines like you see here to follow the three basic rules. We have to have a continuous boundary which we have here. We cannot have any intersecting lines and we cannot have any overlapping lines.
So the things that I see take place quite a bit is somebody will draw it and you'll end up with an intersecting line at this case here and so if I were to go in and finish the sketch here by hitting the green check mark I would get an error that pops up that says lines cannot intersect each other. So I'd have to resolve that issue and simply by looking at the screen I can see that I've got an orange line here and here and to resolve that issue I will just hit continue and then I can trim these two together. Now the trim tool is a lot like fillet in AutoCAD so if you're familiar with AutoCAD you've seen this before but essentially what I'll do is I'll use the trim tool pick one and pick the other side and it'll resolve that corner for me.
Some of the other things that people might end up doing with the floor boundary is accidentally drawing it twice and you can see when we do that Revit freaks out and it even says one of four because there's four lines on there and it's telling me that these lines need to form closed loops. So in this case I'm just going to go ahead and undo drawing that rectangle and then if I were to just use a crossing which means I select and go from right to left when I hit just these two lines if I look on the bottom right it should say two next to the filter button there which means I've got it correct. You can also just go ahead and finish the sketch and if you don't get any errors then you're good to go.
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So I'm going to undo that because I want to back into here and what we want to do is we want to make sure we pick the right type. If this is a slab on grade generic 12 inch is pushing it that's pretty thick and would only be used in special situations. We're going to change that and to do that we'll just do edit type and we're going to make a new type so we're going to say duplicate and immediately when I say we need a new type the trigger in your mind should just be edit type duplicate because you know that's what it's going to take.
The next thing is we're just going to change the size to generic five inch because that's a typical slab on grade dimension and then I'll change the structure from being the one foot to five inches here which will adjust the thickness of my floor to match the type that I've given it. We'll hit okay a couple times to get out of that then we can finish the sketch and now when we look in 3D we have a floor pretty cool. Our next step will be to add the roof so I'm going to save and then we'll continue on in the next video.
