Angled Roof - How do I construct a skillion roof w/ 2 angles

Anonymous · ‎2008-05-20

With the roof tool how do I construct a skillion roof with two angles/pitches.

For example.
Select the roof tool,
Selected the simple skillion roof,
enter the first node of the roof pivot line,
then the second node (usually vertical or horizontal)
draw a simple square roof with a 6 degree pitch.

Now this is where it gets tricky.
If I move the roof pivot line to an angle I get a roof with two angles.

What I would like to know is how to work out where or what angle to place the roof pivot line to get a main roof pitch at 6 degrees and be at 10 degrees (in its side elevation)

Is there any geometry or simple way of working this out.

Thanks in advance.

Brendon

Jere · ‎2008-05-29

Barry wrote:
Draw the two roof planes at your various pitches with zero thickness as Matthew suggested.
Then select and view in 3D.
Now draw the real roof - you will be picking three points to define the roof slope.
The first point is the low corner where the 2 roofs start.
The second point is the high side of the first roof (15°).
The third point is the high side of the second roof (30°).
Now all that is left to do is define the shape of the roof plane - ie two diagonal points for the rectangular roof or more more the irregular polygon method.
Barry.

I've been playing with this for a few minutes now. I just wanted to say, you sir, are awesome.

ArchiCAD 26-5002; Windows 11; Intel i7-10700KF; 16GB RAM, GeForce GTX 1660

Barry Kelly · ‎2008-05-30

Jere wrote:
I've been playing with this for a few minutes now. I just wanted to say, you sir, are awesome.

Thankyou but I'll pass the gratitude on to Djordje.
He is the one that mentioned drawing in 3D.
Like Matthew that is something that I never do either.
Barry.

One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11

Anonymous · ‎2008-06-02

Sweet,

Thanks guys.

vfrontiers · ‎2008-06-07

Sorry, but I quickly breezed thru this thread and wondered why the fuss (and it will turn out that I didn't interpret the problem correctly, just wait!)

If you know 3 points in space, I'd have done the following (btw, if you know 2 pitches, you can quickly obtain 3 points)...

1. Draw a triangle connecting the known points with a mesh (skin version)
2. Adjust heights of mesh to match known point heights
3. Convert MESH to roof

done

Link · ‎2008-06-09

What's baffling is how any of these methods are easier or faster than the one described here.

No roof level lines, no copying and pasting, no need for add-ons, no guessing, no sections, just 8 simple clicks over two roofs.

Cheers,
Link.

Jere · ‎2008-06-10

Isn't that exactly the same as how Barry described it?

ArchiCAD 26-5002; Windows 11; Intel i7-10700KF; 16GB RAM, GeForce GTX 1660

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Angled Roof - How do I construct a skillion roof w/ 2 angles

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