Join Paul F. Aubin for an in-depth discussion in this video Creating a custom sloped ceiling, part of Revit: Tips, Tricks, and Troubleshooting.
- [Instructor] In this video, we're going to look at creating a complex sloping ceiling. Now, to create a sloping ceiling, you can use similar tools that you would use to create a sloping roof but there's one significant limitation that you need to be aware of. Unlike a sloping roof where you can actually have multiple edges that define slope, with ceilings, you can only have one. In order to create a ceiling that follows the shape of this roof up above, I'll need at least two ceiling planes. To help get us started, I've provided a few things here in the exercise file to begin with. I've got this small piece of ceiling right here and then over here, we've got some skylights on the roof.
So if you look over here in this 3D view and I kind of zoom in over here, I added some walls on three sides and actually this is a sloping ceiling already. You can't slope a wall. What I've done is just made a little piece of ceiling there for this side of the lightwell and then these three sides are straight up and down so they're just using walls. Now, here I've sculpted the shape of this wall using Edit Profile and I'll show you how I did that with this piece of wall when we get to that step. So those objects are already there to get us started. Now, let's shift back over here to the section view and we'll start with this ceiling plane right here.
So we're going to edit this one and turn it into a sloping ceiling. So if I go to Edit Boundary, that will prompt me to open up a floor plan. So I'll open up my second floor Reflected Ceiling Plan and let me just resize that just a touch to kind of see the section in the background there. What you'll notice here is where the level of the ceiling is associated with the high roof so you can actually see the sketch kind of drop down to where the high roof was even though it was set at a seven foot offset. So while you're in Sketch mode, it will kind of drop back down to its associated work plane so it's not a bad idea to pay attention to that 'cause sometimes it ends up in a strange location.
Anyway, I'm going to select this edge over here and turn on Defines Slope. Now, it'll default to a one and 12 slope which is fairly shallow and I'll go ahead and click Finish here just to show you what that does. Now, it reintroduces the seven foot top offset and then it kind of slopes up from there. It's got a really gentle slope to it right now. If I edit the boundary, what I was talking about a moment ago is even though it seems to allow me to turn on Defines Slope for another edge, if you try and finish, it will complain.
So unfortunately, we can't have more than one slope defining edge so I'll have to turn that one off. Now, the slope of this roof in the background is actually six and 12, so I want this slope to match that. Now, if i put in six and 12 here, I mean, it does match and it's nice and parallel and it even kind of went up to a nice location so you say, oh, that's great, we're good to go. The trouble is, I'm measuring where this seven feet is from this location here which means that when I try and build the second roof and match it up to the exact same location, it'll take a little bit of math to get it to occur in exactly the same spot so I have a different approach that we're going to take here that will avoid having to run those calculations.
I'll simply select this roof, edit the boundary, go back to the ceiling plan and instead of sloping this edge, I'm going to slope this one instead and instead of using a six and 12 slope, I'm going to use a negative six and 12 slope and when we click Finish, the result will be largely the same. Notice it follows the same slope but when you do a negative slope, it slopes down instead of up. So we're sloping from this location down. Now, that seven feet is measured from here.
So seven feet puts it a little too low so what I'm going to do is just increase that a little bit. I'll make it nine and I like that a little bit better. Now, another nice thing that you'll notice here is all of the light fixtures that were hosted in that ceiling remain hosted so now they're following the slope as well and that's kind of a nice extra bonus there. Okay, so now that we've got the first ceiling positioned the way we want, let's click over here to the ceiling plan and create the second one. So we're going to go to the Architecture tab, click the Ceiling button and you could try and use the Automatic Ceiling here but it really wouldn't help you.
You'd have to modify the sketch anyway and notice that it's not even finding a boundary. Well, the reason it's not finding a boundary is just simply because we're cut too high right now. If you drop this value down to say, I don't know, negative six or something, it will find that space but it's going to give you a different shape than what we really need so let me change this back and actually seven is what it was defaulting to but it's not really seven I want, it's nine, right, because I want to match this ceiling over here. So I want to be at Level High Roof and offset of nine feet and instead of using Automatic Ceiling, I'll switch to Sketch Ceiling.
So here, I can draw the sketch exactly the way I want it. Now on these sides over here on the right, I'll use the Pick Walls option and I'll pick this exterior wall. This one's actually in two pieces so I'm going to pick the long piece and then the short horizontal piece over here. For this location here, I want to match up exactly with that roof so I'm going to use Pick Lines instead of Pick Walls 'cause there's no wall there and I can actually pick the edge of the existing ceiling and then I'll keep Pick Lines turned on, zoom in a little here and pick the two sides of this column.
Now, of course, if I were to try and finish right now, it would fail because I don't have a closed sketch. So next, I go to Trim and Extend to a Corner and I'll just simply clean up all of these corners to make this a nice enclosed shape. Remember to click the side you want to keep. Okay, so now I have a nice enclosed shape there but if I were to click Finish, I'd have a flat ceiling. So the last step is to select the edge that I want sloped, turn on Define Slope and once again, I'm going to use negative six so that it matches the slope of the ceiling I've already created and when I click Finish, you'll see that it comes in in exactly the right spot.
Now, we haven't accounted for the lightwell yet so if you look over here in the 3D view and deselect it, it completely goes across the lightwell. So to edit that, we just simply select the ceiling and edit the boundary, go back to our second floor Reflected Ceiling Plan and we just need to sketch another shape around that opening that we want. Now, you could draw it with a rectangle. I'm going to use Pick Walls for these sides since I have walls there. The nice thing about Pick Walls is those sketch lines will stay associated with those walls.
So if the walls move around, the sketch will update too. On this side, I'll just do Pick Lines and pick this edge right here and then clean up those two corners and click Finish and now, that cuts a hole in my ceiling so we're almost done. Now, all we need to do is adjust the shape of those walls so that they accommodate the lightwell shape that we're looking for. So let me just zoom in here a little bit. For this wall, we can actually just use the Attach Top and Base command.
So here it is right here. It's top is already attached to the roof but we want to now attach its base to the ceiling and you see how that'll chop off the bottom portion of that wall and if you kind of click over here in section, it cuts it at an angle too which is really nice. Let me deselect here. Now, you could do that for this wall as well but the trouble is in addition to cutting it to the ceiling, we also want to shape it to this sloping edge and when I tried that with this wall over here, it actually failed as soon as I did the sloping edge so it would attach the bottom base right now but as soon as we come in and cut the other edge, it will fail.
So instead what I'm going to do is just simply select this wall and edit its profile. Now, Edit Profile is just going to put you into Sketch mode where you can actually change the shape of wall itself. So I'm going to close this warning. This is just telling me that temporarily it will remove the top attachment. So it's actually attached to the roof right now. What I'll do is my Pick Lines again and I want to pick the inside line of this sloping ceiling and the top edge of this sloping ceiling then I want to trim all that up on all sides and then delete the extra lines.
So it still has to create a valid enclosed shape and then I'll click Finish here and then it will complete the effect. Let's deselect it and we now have a nice lightwell in that location. But just keep in mind that in order to create sloped ceilings, you can only have one slope defining edge. So to build a complex condition like this, it actually required three separate ceilings. One here, one here and one here. Each one of those has their own slope and make them match up together to create our peaks and valleys and then finally complete any lightwells or other conditions using walls to box out the shape.
NOTE: The exercise files for this course can only be opened in the most recent version of Revit (Revit 2017).
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