topic Re: How do I model this organic shaped roof? in Modeling

How do I model this organic shaped roof?

Anonymous — Tue, 23 May 2023 13:06:22 GMT

Hi all

I have made a concept model in MoI3d (moment of inspiration) of a large building that has an organic shaped roof. I would now like to take the form over to Archicad 12 to continue developing the design.

Can anyone help me with ideas about how to go about doing this?

I can convert using Rhino or C4D if needed but im just not sure how archicad can best handle these forms, especially as a roof.

Is mesh to roof the best route and if so .. how do i do it?

Can the curtain walling tool do this type of roof?

Im thingking that it will be a gridshell type roof eventualy so this is what I would like to be able to incorporate in the model if possible;

Any advice much appreciated.

Lucy

Re: How do I model this organic shaped roof?

Anonymous — Sat, 03 Jan 2009 01:29:45 GMT

here is the MoI model.

Re: How do I model this organic shaped roof?

Anonymous — Sat, 03 Jan 2009 01:44:34 GMT

more pics

Re: How do I model this organic shaped roof?

Anonymous — Sat, 03 Jan 2009 03:55:29 GMT

roof design!
.obj or .3ds export?
Try Curtain Wall (I think Nurbs Curves are the go) that Rules OUT ArchiCAD
http://www.graphisoft.com/ftp/marketing/ac12/nft/01-CW-10/01-CW-10.html

Re: How do I model this organic shaped roof?

Anonymous — Sun, 04 Jan 2009 03:06:36 GMT

Hello Lucy,

Other programs are ideal: Maxon Form etc. But you definitely can do this in Archicad.
The best way would be if you can export your file in Studio format or other 3d format and import directly to AC. If not, then a mesh is your answer:

1) Get as much information as you can from the model. I would want a section of each roof rib in the design, 50 sections more or less.
2) Import a plan view and the sections. If no export function is available, then do it just as you did to post your roof pictures, AC can use jpg's.
3) From the plan view create a mesh. Use the sections you imported to create accurate mesh ridges for each portion of the roof.
4) then convert mesh to roof (see AC help for this). A roof has thickness, whereas a mesh does not.
5) If you are new to AC this might be a bit much. You are going to modify the ridge elevation of 50 x 6 = 300 points at a minimum, the more points you create the smoother the resulting mesh. (I assume 50 ridges broken into a least 6 segments each).

Happy meshing,
-Mark
PS I don't know how to post pictures, I actually started on your roof just to make sure this method works. and it does.

Re: How do I model this organic shaped roof?

Djordje — Sun, 04 Jan 2009 04:34:26 GMT

Lucy,

How would you make that roof?

If you know, make it in ArchiCAD. Otherwise, just import your very nice shape, and put a big note: TO SPECIALIST DESIGN.

Re: How do I model this organic shaped roof?

Dwight — Sun, 04 Jan 2009 05:13:16 GMT

Our rice krispie less one sound colleague does a fine job of explaining how a final model might be excruciatingly created of that shape, but of course, in Archicad, there is now way to do it as an easily edited blob....

Re: How do I model this organic shaped roof?

Erika Epstein — Mon, 05 Jan 2009 04:11:43 GMT

Dwight wrote:
in Archicad, there is now way to do it as an easily edited blob....

Nor would you build it as an easily edited blob. See Djordje's post. Ultimately you will have to communicate to a builder your design concept. So,How would you build it ?

Re: How do I model this organic shaped roof?

Dwight — Mon, 05 Jan 2009 04:22:00 GMT

Everyone knows that all you need to build a blobform is "SchpritzCrete" on chicken wire so forget the details.

Just make it thicker if you have to span a river.

Re: How do I model this organic shaped roof?

Erika Epstein — Mon, 05 Jan 2009 04:39:03 GMT

Chicken wire? I knew I was forgetting something.

Re: How do I model this organic shaped roof?

Dwight — Mon, 05 Jan 2009 05:03:04 GMT

Just to clarify: these blobby things are about exploring form, not building. It isn't fair to ask a student how they will build something because they really have no answer for that.

I figure that all a student really needs to say is "SchpritzenDraht" because that was good enough for our recently-deceased Sydney Opera House competition winner even though in the end expensive thick, complicated tapering arches were needed. Who would bother to go if there was no scandal? It brings the tourists out.

Re: How do I model this organic shaped roof?

Anonymous — Mon, 05 Jan 2009 23:21:00 GMT

Chicken Wire: Blues Brothers

Re: How do I model this organic shaped roof?

Anonymous — Wed, 07 Jan 2009 09:19:20 GMT

Clouds,

You can make that.

But first... as has been duly noted... You'll want to decide on it's construction. Will you use laminated beam webs with a sheathing system laid across? Or will it be ferrocement?

If you go beams / sheathing, you'll need to model each beam. That will also allow you to derive views of the beams with the section tool, which will become shop drawings. You'll have to use the mesh tool to create the sheathing assembly. That will have thickness, most likely, so you'll need TWO meshes... one to serve in the model and another, slightly smaller, to subtract from it in a solid element operation. The 'cutting body' mesh is placed on 'hidden' layer (one that you normaly keep turned OFF). After the subtract, you'll have a thin, organic shaped shell.

WARNING - this will be EXTREMELY tedious, but it CAN be done... I've done it. The fineness of any curves will be dictated by how willing you are to juggle the hundreds of little points involved. You will, however, find that you don't need as many as you might think... particularly where the curves are less extreme.

For a ferrocement construction, you just need the meshes, of course. And the bottom mesh will need to be carefuly constructed to follow the engineer's parameters for shell thickness, edge beams, etc.

In certain software packages (like MaxonForm), you can actually convert the shape you've created to a GDL. That's fine, but you don't have a lot of 'control' over it, like you do with native tools.

Dwight will now proceed to kick my butt down the street for encouraging organic behaviors...... Can I just do it until I need glasses, Dwight?

AND... as always, I pull out my organic Howitzers... John Lautner and Ken Kellogg. If you like sexy curves, look these guys up. They'll make you
Personaly, I love Kellogg's later stuff... It friggin' rocks. Most original guy out there today, IMHO.

Good seeing you guys again.... I've actualy been very busy in spite of economic conditions... I'm just amazed. I've got to come back more often... I miss you guys and gals.

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Re: How do I model this organic shaped roof?

Dwight — Wed, 07 Jan 2009 12:26:18 GMT

Dave wrote:

Dwight will now proceed to kick my butt down the street for encouraging organic behaviors...... Can I just do it until I need glasses, Dwight?

My Peeve: Naive designers use software to make kidstuff forms without understanding the financial or technical ramifications of those forms. And we all love to explore form as if it was sculpture. Just make a good reason for why it isn't an extrusion or a flat panel.

Attached: beautiful but criminal distortion of a beam, justified by its ability to draw out the rubes.

Re: How do I model this organic shaped roof?

Anonymous — Wed, 07 Jan 2009 13:11:31 GMT

Such forms should be modelled in other appications, AC is just not the right one for them. You have already modelled it, so export it to 3ds or dwg and import it in AC. Almost all applications can export to 3ds or dwg.

Once in AC, it is almost impossible to change the form, but you already have made it! What you can do is make holes into it for doors and windows. You can also produce nice floorplans, sections and elevations. Usually 3D modelling software cannot make architectural floorplans and sections.

Don't forget to model the form hollow inside and with a thickness for the walls and roof!

Re: How do I model this organic shaped roof?

Anonymous — Wed, 07 Jan 2009 21:07:14 GMT

Dwight,

Do I get a cape and armored suit with the 'Organo-Boy' title? How's about some X-ray vision or bullet-proof flesh???

C'mon.... I have to get SOME return on this!

I agree... the pic you posted is... uhhh.... obscene.

Happy New Year, guys.

Re: How do I model this organic shaped roof?

Dwight — Thu, 08 Jan 2009 00:30:49 GMT

"Organo-boy" wears this: