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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Create a roof for a mansard roof using the roof by footprint method.
Type:
Tutorial
Length:
5 min.
Tutorial resources
These downloadable resources will be used to complete this tutorial:
Transcript
00:04
And here we can see a single story building that, that has quite a large roof space.
00:08
And we'd like to utilize the roof space to maximize the floor area.
00:13
And that will mean making the slope of the roof much steeper.
00:16
So to prevent it from becoming too tall,
00:18
we'll create a second roof to form a mansard roof.
00:22
So first from the project browser, we'll open up the north elevation view
00:27
and now zooming in, we can see the slope of the roof here
00:31
and we'll make this a bit steeper so we can have more headroom closer to the edge.
00:36
So I select the roof
00:37
and now looking at the property's palette, we have the dimensions panel here
00:42
and in the slope parameter, it's currently set to
00:45
nine in 12. So we've changed this to be 18 in 12.
00:49
And then once we apply this,
00:51
we can see that we have a much deeper roof and this will
00:54
give us a lot more usable floor space at the edge here.
00:57
But obviously,
00:58
it's very tall as that pitch now extends up to the top of the roof at a steep angle.
01:03
So panning across a little, we can see we have level three here
01:07
and this is where we would like the top of the roof to finish.
01:10
So whilst it's still selected, we'll go back to the properties pallette.
01:14
And in the constraints panel, we can see we have a parameter for cut off level
01:18
which is currently set to none.
01:20
So we'll click on the list here and then we
01:22
can choose level three to be the cut off level
01:26
and straight away, we can see now that that roof cuts down
01:30
to level three.
01:32
And if I swap back to the 3d view,
01:34
we can see now that obviously we have a large hole in the top of the roof
01:38
and this is what we will infill with the mans side part of the roof.
01:43
So let's do this. We'll open up the floor plan view level three.
01:47
And now looking at the roof here,
01:48
we can see the area that we need to infill with a new roof.
01:53
So we'll go to the architecture ribbon tab and from the build panel,
01:57
we'll choose the roof by footprint tool.
02:01
Now, looking at the type selector at the top of the property's pallet,
02:04
we can see it's the generic 12 inch roof.
02:06
So we'll select this and from the list of available roofs here,
02:09
we'll choose the wood rafter nine inch slate tiles roof.
02:15
And now from the create roof footprint ribbon,
02:17
we'll change the draw tool from pick walls to pick lines
02:23
and on the options bar, we'll check the lock option
02:27
and now we can simply pick on the edges of the roof here. And
02:30
as we go around, we can see the padlock
02:32
is actually closed,
02:33
which is creating a constraint between the existing roof edges
02:37
and the sketch lines within our current mansard roof.
02:42
So I haven't got all four created.
02:44
We'll click, finish, edit mode to now create that roof
02:49
and we'll swap back to the 3D view
02:52
and we can see now that we have that roof in, fill in that gap there,
02:55
although it is slightly too steep still. So with it selected,
02:59
we'll go to the dimensions panel in the properties pallette
03:02
and we'll change the slope parameter to be three and 12.
03:07
And once that's applied, now,
03:08
we can see that's a lot lower and a lot better looking for our mansard roof.
03:12
Zooming in a little to the corner.
03:13
We can see that the top of the roofs don't quite meet.
03:16
This is due to the level parameter being to the underside of the roof,
03:20
we'll fix this by moving the mans side roof up.
03:23
So from the project browser,
03:24
we'll open up the section folder here and then go to view section one.
03:29
Now zooming in,
03:30
we can see where the roofs meet and it's
03:32
the underside of the roof meeting at level three.
03:34
So
03:35
we'll simply select the mansard roof here and then from the modified ribbon tab,
03:39
we'll click on the move tool
03:41
and then we can just snap to the top of the mansard roof and
03:44
then to the top of the original roof to get them both aligned.
03:49
So now we'll go back to the 3D view and we
03:51
can see the roofs are aligned and that's our mansard roof.
03:54
However,
03:55
it still looks to be a little bit too tall.
03:59
So as we have the levels visible in the 3D view,
04:01
let's select the top level level three.
04:04
And then from the temporary dimension here,
04:06
we'll click and change this from 12 ft to 8 ft.
04:11
And then we can see that that man side roof moves down in line with the level
04:15
and that the edges of the man's side roof still aligned with the existing roof.
04:19
So you had that lock constraint between the two of them
04:22
and that now finishes the mansard roof.
Video transcript
00:04
And here we can see a single story building that, that has quite a large roof space.
00:08
And we'd like to utilize the roof space to maximize the floor area.
00:13
And that will mean making the slope of the roof much steeper.
00:16
So to prevent it from becoming too tall,
00:18
we'll create a second roof to form a mansard roof.
00:22
So first from the project browser, we'll open up the north elevation view
00:27
and now zooming in, we can see the slope of the roof here
00:31
and we'll make this a bit steeper so we can have more headroom closer to the edge.
00:36
So I select the roof
00:37
and now looking at the property's palette, we have the dimensions panel here
00:42
and in the slope parameter, it's currently set to
00:45
nine in 12. So we've changed this to be 18 in 12.
00:49
And then once we apply this,
00:51
we can see that we have a much deeper roof and this will
00:54
give us a lot more usable floor space at the edge here.
00:57
But obviously,
00:58
it's very tall as that pitch now extends up to the top of the roof at a steep angle.
01:03
So panning across a little, we can see we have level three here
01:07
and this is where we would like the top of the roof to finish.
01:10
So whilst it's still selected, we'll go back to the properties pallette.
01:14
And in the constraints panel, we can see we have a parameter for cut off level
01:18
which is currently set to none.
01:20
So we'll click on the list here and then we
01:22
can choose level three to be the cut off level
01:26
and straight away, we can see now that that roof cuts down
01:30
to level three.
01:32
And if I swap back to the 3d view,
01:34
we can see now that obviously we have a large hole in the top of the roof
01:38
and this is what we will infill with the mans side part of the roof.
01:43
So let's do this. We'll open up the floor plan view level three.
01:47
And now looking at the roof here,
01:48
we can see the area that we need to infill with a new roof.
01:53
So we'll go to the architecture ribbon tab and from the build panel,
01:57
we'll choose the roof by footprint tool.
02:01
Now, looking at the type selector at the top of the property's pallet,
02:04
we can see it's the generic 12 inch roof.
02:06
So we'll select this and from the list of available roofs here,
02:09
we'll choose the wood rafter nine inch slate tiles roof.
02:15
And now from the create roof footprint ribbon,
02:17
we'll change the draw tool from pick walls to pick lines
02:23
and on the options bar, we'll check the lock option
02:27
and now we can simply pick on the edges of the roof here. And
02:30
as we go around, we can see the padlock
02:32
is actually closed,
02:33
which is creating a constraint between the existing roof edges
02:37
and the sketch lines within our current mansard roof.
02:42
So I haven't got all four created.
02:44
We'll click, finish, edit mode to now create that roof
02:49
and we'll swap back to the 3D view
02:52
and we can see now that we have that roof in, fill in that gap there,
02:55
although it is slightly too steep still. So with it selected,
02:59
we'll go to the dimensions panel in the properties pallette
03:02
and we'll change the slope parameter to be three and 12.
03:07
And once that's applied, now,
03:08
we can see that's a lot lower and a lot better looking for our mansard roof.
03:12
Zooming in a little to the corner.
03:13
We can see that the top of the roofs don't quite meet.
03:16
This is due to the level parameter being to the underside of the roof,
03:20
we'll fix this by moving the mans side roof up.
03:23
So from the project browser,
03:24
we'll open up the section folder here and then go to view section one.
03:29
Now zooming in,
03:30
we can see where the roofs meet and it's
03:32
the underside of the roof meeting at level three.
03:34
So
03:35
we'll simply select the mansard roof here and then from the modified ribbon tab,
03:39
we'll click on the move tool
03:41
and then we can just snap to the top of the mansard roof and
03:44
then to the top of the original roof to get them both aligned.
03:49
So now we'll go back to the 3D view and we
03:51
can see the roofs are aligned and that's our mansard roof.
03:54
However,
03:55
it still looks to be a little bit too tall.
03:59
So as we have the levels visible in the 3D view,
04:01
let's select the top level level three.
04:04
And then from the temporary dimension here,
04:06
we'll click and change this from 12 ft to 8 ft.
04:11
And then we can see that that man side roof moves down in line with the level
04:15
and that the edges of the man's side roof still aligned with the existing roof.
04:19
So you had that lock constraint between the two of them
04:22
and that now finishes the mansard roof.
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