Jon, I can appreciate your enthusiasm, but you need to slow down and listen to the responses you are getting.
Objective and the AC12 curtain wall are improvements, but they still won't give you native tools to build structures like these.
The geometry you're showing probably can't be built in Archicad without substantial effort and almost no ability to edit it without completely rebuilding it. You'd be better off to build it in something else like Rhino, Cinema 4D, 3DS Max, etc. Once you import it into Archicad, you may or may not be able to convert it into usable construction documents. The representation of objects brought in from other programs is really weak.
If you just want to model these for presentation, just use a presentation modeler. Rhino is awesome for that.
If you want to do construction documents, you'll need something that can do swept or revolved profiles. You could pull off some of this with Revit's
Massing
and
Apply to Face
tools, but not all of it. Digital Project (Catia) might be your best bet.
Tom Waltz
