Modeling
About Archicad's design tools, element connections, modeling concepts, etc.

Roof and rafter

Anonymous
Not applicable
Hi,

Can someone explain how to cut out the roof this hole? (the second roof section)
Eaves and roof at the ends do not come insulation, how to solve it?
Eaves end is this rafters like in picture. how it's made?
I hope anybody could understand what I thinking.

Best regards,
Jaano

jp6.jpg
36 REPLIES 36
Barry Kelly
Moderator
Barry wrote:
Roofs (unlike other elements) will always show lines when joined end to end even when their surfaces match.
Actually this is not true in 3D but it is in plan.
Joined roofs will always show lines in plan but they will merge in elevation if the surfaces are in the same plane.

As Steve said there can sometimes be 'ghost' lines when viewing with OpenGL engine in 3D.

Barry.
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Barry Kelly
Moderator
I looked at this a little more.
Nojaano's lines looked a little more than 'ghost' lines.
I found the if the edges of your roof don't match then you will see a join in 3D/elevation.

Barry.
One of the forum moderators.
Versions 6.5 to 27
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Erwin Edel
Rockstar
Barry, if you select the roofs and use Merge Elements, the lines will not appear in plan either.

Works with shells and roofs with shells. (and some more stuff)
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

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Anonymous
Not applicable
Mayby its wrong, but this here is my solution:
I made a great panel and this covers the lower layers
Anonymous
Not applicable
How to add a gangway and snow barriers on the roof?
Barry Kelly
Moderator
Erwin wrote:
Barry, if you select the roofs and use Merge Elements, the lines will not appear in plan either.

Works with shells and roofs with shells. (and some more stuff)
Thankyou Erwin,
Even us oldies can learn something new.

Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Barry Kelly
Moderator
nojaano wrote:
How to add a gangway and snow barriers on the roof?
You will either need objects (I am not aware of any but we don't have a great need for then down here in AUS) or you will need to model them with walls, beams, morphs.

Which ever method remember you can use 'Gravity' option to automatically get the correct height on the roof surface.

Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Barry Kelly
Moderator
nojaano wrote:
Mayby its wrong, but this here is my solution:
I made a great panel and this covers the lower layers
Excellent.
That's how I would model it.
Each material as its own element so you can position them where you need them.

Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
DGSketcher
Legend
All these roof layers are a great solution, but how do you then manage sloping roof-lights?

My current method is using a composite profile roof for the lower layers e.g insulation, inner lining etc into which I place the rooflight, but then I have to manually create holes in the roof covering layer to complete the opening
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Barry Kelly
Moderator
DGSketcher wrote:
All these roof layers are a great solution, but how do you then manage sloping roof-lights?

My current method is using a composite profile roof for the lower layers e.g insulation, inner lining etc into which I place the rooflight, but then I have to manually create holes in the roof covering layer to complete the opening
Yes with individual elements for each roof material you would need to manually cut the holes.

But as I discovered (thanks to Erwin) you could use different composites and 'Merge' them to adjoining co-planar roofs.
So for each part of the roof where the construction differs use a different composite and merge them, then the skylight would cut the hole automatically through the entire composite (assuming it does not span two different composites which I would doubt would happen).
The problem then is you need to ensure the roofs are co-planar otherwise the joining edge lines will not disappear when you merge.

Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11