Roofcon Trusscon Download 210
Melva Simons
If I put two parts of the roof at a different slope Archicad wants to displace the diagonal ridge at the eaves corner. Instead, it should displace the diagonal ridge so that it misses the corner of the wall but still goes into the corner of the eaves. I cannot find a way to move this ridge in the way I want it to move and automatically Archicad does what you see in the picture. Is this done only manually with single-roof planes?
Shortening the Eaves was in relation to using a Multiplane Roof with "Eaves".
Given your second image, I would not even use the Eave setting. Since you are resting the bottom of a truss on the wall rather than the rafter itself, I would set the Eaves to ZERO and just offset the whole Reference Line from the wall line. In that way you can set your pitches to what ever you want, your hips and ridges will automatically adjust and your eave height will stay consistent; your story height, plus maybe your fascia height.
Using Single Plane Roofs with an "Eave" as suggested by mthd means that you need to work out the pitching height of each roof... which you would probably do in 3D. The intersection can be done automatically by just intesecting the roofs. In the end, I feel like you do not save youself any effort using Single Planes and juat have to do more things in 3D.
Your red line is actually moving the pitching point on your steeper sloped section. This would equate into placing spacers under your rafters for those sides? The hip will rotate clockwise as you increase the pitch of the left roof. This is a mathematical fact given fixed pitching points. The only way to have the hip meet the corner is to shorten your eave lengths. To emulate the spaces mentioned before, and keep your "eave" lengths, you would just need to extend your pitching line outside your wall line.
No this is not exactly correct that the only way is to shorten eaves. I have been doing structural design for the manufacturing of roofs for about 5 years (mostly trusses). This is a simple situation. You can have different slopes and ridges go directly in the eaves while both eaves are the same length. I am gonna put an example pictures with this post. It is not the same roof, but visually I need the same result. This ridge should move further away from the wall corner.
Ok. Thanks, Barry and mthd. I understand that pitching height is different. Was just asking if Archicad can construct this kind of surface with more automatic tools. But I guess I have to do it separately then. Was working with Roofcon/trusscon and then Mitek Pamir. Those were very nice for designing roof surfaces and timber structures
I started with Bostich but it was only 2D and in the old DOS system too. Yeah it would be nice if AC could edit it as one entity but it has its limits as to what we can do with it. You would have to go back and view the official roof editing video series, many versions ago but they are available on YT if your search for them.
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