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

Inclined walls

Anonymous
Not applicable
Hi all
Just wanted to know if there is a way of drawing inclined walls (walls tilted at an angle) in archicad 8.1 or 9 and if you can draw free form walls ( like frank gehry's work) thanks
6 REPLIES 6
Anonymous
Not applicable
There is presently no simple, direct way to do this, but it can be done with Solid Element Operations for the 3D component or a library part which can provide both 2D and 3D elements.

Using SEOs you start with an extra thick wall and cut away the parts you don't want. You can then put this on a 3D only layer and draw the plan view in 2D or save the 3D model as a library part and draw the 2D part in the symbol window. (There is a clever way to get the symbol to draw automatically using the PROJECT2 statement along with GLOB_CONTEXT = 2 and a conditional CUTPLANE in 3D - if you are feeling adventurous that is.)
Anonymous
Not applicable
If you want to draw stuff that isn't (for the majority of budgets) practical to build then Form-Z offers a sculpting solution.

Representing inclined walls in Archicad isn't difficult with the wall accessories tools.

HTH - Stuart
Fabrizio Diodati
Graphisoft Alumni
Graphisoft Alumni
And, please, don't forget ArchiWall!

www.archiwall.com

Fabrizio Diodati
Graphisoft Italy Srl | Via Rossignago 2/A Spinea Venezia 30038 Italy
Dwight
Newcomer
And you can emulate Gehry's work, with some limitations.

Remember that the sensuous forms of the EMP, Bibao and Disney Center aren't initially created in a computer - they are modeled with blobs of tissue paper, etc and then digitized.

This is more than an afternoon's work. The truth is the Catia/digitizing is not like pushing a puddle of formable mercury around your desk like we might hope but a painstaking extraction of analog model data that can also be achieved in ArchiCAD.

I've played with parametric, diamond/rectangular tiles that interleave and mesh components that describe double curves. The attached image [EMP, Seattle] shows how one might address the roll under with meshes for more fluid form, since ArchiCAD meshes cannot "roll under" from the vertical.

When you think of these forms as tiled structures made from manufactured components and not amorphic snot blobs, it helps, because ArchiCAD works that way. Besides, ever look at the fit and finish on the panel edges Disney Center? Shame. ArchiCAD can easily make a mess like that.

I got to talking with the project manager/cosntruction deficiency stooge at the EMP shortly after it opened. He was running to the bar with a length of hose to cope with a beer overflow. DNC and I know this bar well.

The builder guy told me that they had done the skin fabrication drawings in CATIA and the panels had been meticulously resolved, but there was a problem: as the flat panels accumulated on the segmented steel building ribs, their accumulating resistance to being curved to the support began to distort the structure so that overlapping panel holes didn't align.

And so it goes. Installers to the rescue. [Adjective I wouldn't want my mother to read] computers. Send some lads with plenty of rivets and a gutter machine.

We often envy the guys who work with these viscerally-exciting floppy pillow-forms, but they have their challenge. I imagine a frustrated project manager at Gehry's office:

"Why can't we do something straight."

This just before he quits to build Wal-Marts. There's a theme I understand.

Wal-Mart: Keep 'em shopping
Jail: Keep 'em in.
EMP-2.jpg
Dwight Atkinson
Anonymous
Not applicable
Great points Dwight.

It is possible that with clever coding it could be cheaper to do Gehry with GDL than with Catia. We just need to write up some parametric bum-wad (I mean flimsy )

From what I understand (I saw a show of his models at the Guggenheim) his zoomy shapes are mostly crumpled candy wrappers around relatively conventional buildings (very cool crumpled candy wrappers IMHO).

Still it would be nice to be able to have some freeform tools in AC. With SEOs they could easily be fitted to the core structure - at least in 3D.
Dwight
Newcomer
Thank you, Matthew.

The key to understanding these irregular forms is that unlike my avatar "Tai Chi For the New Milennium: Architect Explains The Concept" the Gehry structures are far from whims made after a bottle of wine on a Tuesday evening.

Certainly we have all come to expect that an errant gesture can be turned into a building - Einstein Tower being one - and my spilled coffee being turned into an unexpected spiral stair being the other. That was in the old days. Now the cat walking on the keyboard can add height to a structure by adding stories. Zoning trouble.

Our local architecture school director speaks of his students as going through "the losenge phase" where everything is a protoplasmic embryo of a building to be stretched and massaged into place. We'll never do that with ArchiCAD and neither do those guys who actually make protoplasmic structures.

I'm inclined to show you all about how fish scale-like approach can yield a sensual form, but it will have to wait. Besides, this form would be difficult to edit -unless it was based in an analog model, in which case it would be nearly finished as a form once modeled....
Dwight Atkinson