Roof modeling - Create a mansard roof

Tutorial resources

These downloadable resources will be used to complete this tutorial:

mansard-roof.rvt - (6 mb)

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

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

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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Create a mansard roof

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Improve your experience – allows us to show you what is relevant to you

Customize your advertising – permits us to offer targeted advertising to you

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