topic Re: Concave Roof in Libraries & objects

Concave Roof

SGraham_MGArchitects — Wed, 24 May 2023 10:03:36 GMT

Does anyone know of a method or object that would allow me to create an inwardly curved (convex) roof? I'm trying to create a roof over an angled bay window with standing seam roofing.

Re: Concave Roof

Ralph Wessel — Wed, 17 Oct 2007 14:46:50 GMT

Hobbesnb wrote:
Does anyone know of a method or object that would allow me to create an inwardly curved (convex) roof? I'm trying to create a roof over an angled bay window with standing seam roofing.

Do you mean something like this?

Re: Concave Roof

SGraham_MGArchitects — Wed, 17 Oct 2007 15:01:20 GMT

yes...exactly that!
is it a gdl object?

Re: Concave Roof

Dwight — Wed, 17 Oct 2007 15:18:45 GMT

That would be easy with a Complex Profile wall.

Re: Concave Roof

Ralph Wessel — Wed, 17 Oct 2007 15:56:03 GMT

Hobbesnb wrote:
yes...exactly that!
is it a gdl object?

It's an assembly of parts - mostly objects made with OBJECTiVE, a few slabs and walls. Not repeatable enough to make a complete object. Let me know by PM if you want an archive.

Re: Concave Roof

Erika Epstein — Wed, 17 Oct 2007 16:13:48 GMT

Within archicad you can accomplish this using the barrel vault roof tool.
Draw the curve of the roof and then magic wand the roof onto it.

If you do a lot of this type of roof, Ralph Wessel's parametric objects well worth their price.

Re: Concave Roof

Dwight — Wed, 17 Oct 2007 17:06:26 GMT

The barrel roof tool is cumbersome compared to using the Complex Profile.

Here it is in seconds with the wall tool
.

Re: Concave Roof

Erika Epstein — Wed, 17 Oct 2007 17:15:14 GMT

And the standing seams?

p.s your roofs are curving the wrong way. Also no line at corners where roof planes intersect

Re: Concave Roof

Dwight — Wed, 17 Oct 2007 17:24:58 GMT

Standing seams are simple enough.
The point is that the complex profile deserves more investigation and application since it is so easy to edit after it is placed.

Re: Concave Roof

Ralph Wessel — Fri, 19 Oct 2007 09:36:04 GMT

Dwight wrote:
Standing seams are simple enough.
The point is that the complex profile deserves more investigation and application since it is so easy to edit after it is placed.

I think that's a good point - you can do many things with profiled walls - but it can end up being yet another painful work-around too. Getting the details right can become a real time-waster, especially if the design changes. It can push designers into either not using ArchiCAD properly (2D only) or limiting their building to what is easy to make in ArchiCAD. For example, if the concave roof in question had any kind of profile, complex profiles won't help at all. I made the attached image in under a minute, and the bending or shaping of the objects is all dynamic, i.e. you can readily tweak it until it looks right.

That's why OBJECTiVE exists - it's quick and easy to make (and edit) difficult shapes. If you use complex profiles, you can quickly run up a huge list of 'bits and pieces' which have nothing to do with walls at all, and it can get really messy if you want to move them between projects. OBJECTiVE creates stand-alone objects, and you can also edit them in place rather than having to dive into a separate palette for managing profiles.