topic Re: The Roof of I–House Katsufumi Kubota in Modeling

The Roof of I–House Katsufumi Kubota

Anonymous — Tue, 23 May 2023 13:00:45 GMT

Hello Everyone.
I am very new to Archicad and I have been told to model this i-house to learn the ropes.

I have got the walls, slab, glass etc but I cannot for the life of me get the roof and back wall (one piece)?

Any guidance at all would be greatly appreciated.
Should I make the shape in another program and import it as an object?

The roof has many strange angles on the edges and from bottom to top.

Picture can be found here and if you are keen it is called the i-house and it is under Works>House>i-House on this website
http://www.katsufumikubota.jp/html/index-e.html

Thankyou very much for your help.

Miked

Re: The Roof of I–House Katsufumi Kubota

David Maudlin — Tue, 22 Sep 2009 12:24:06 GMT

Miked:

You will want to use two features to model this wall & roof. First, create the profiled form of the wall/roof with a Complex Profile Element, then after placing this element in the model, cut out parts of this element with Solid Element Operations (SEO).

For more information with images, go to Help > ArchiCAD Help, when your browser opens click on the "Search" tab, and input "Complex Profile Element" in the search box, in the results list "Creating or Editing a Complex Profile Element" will lead to detailed information, then input "Solid Element Operations" in the search box, in the results list "About Solid Element Operations" will again lead to detailed information. You can also use these terms to search this forum, these are common issues.

You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.

HTH

David

Re: The Roof of I–House Katsufumi Kubota

Anonymous — Tue, 22 Sep 2009 12:38:57 GMT

Thanks very much for that David, it is greatly appreciated

I will give it a go.

I am used to CAD CAM programs like solidworks/ proe and have been hunting for words like extrude etc. Seems strange that it isnt just as simple as that because from what I can see there is a whole lot of very useful tools in Archicad but when it comes to complex shapes, things get hard very quickly.
but I guess it is just a bit of practice.

I will also add a signature....

Thanks again
Miked

Re: The Roof of I–House Katsufumi Kubota

Ignacio Azpiazu — Wed, 23 Sep 2009 02:30:37 GMT

It does need complex profiles and SEO, but I think it needs to be actually 3 main pieces --
- there is a (flat?) ArchiCAD roof; it could be a slab but a roof might offer more flexibility for trims;
- with a 'complex profile' edge tapering to the razor-thin edge from both the roof and the ceiling side, on most sides;
- plus the sloping multistory front wall;

and probably a SEO to cut the side, non-tapered, roof edge and the front wall in a single move--although I don't remember if you could pull this off with a fake sloping roof instead of a SEO, which will then make the wall look good in plan as opposed to SEO; it may require some manual work on that roof edge.

Re: The Roof of I–House Katsufumi Kubota

Mats_Knutsson — Wed, 23 Sep 2009 05:41:56 GMT

miked79 wrote:
Hello Everyone.
I am very new to Archicad and I have been told to model this i-house to learn the ropes.

I have got the walls, slab, glass etc but I cannot for the life of me get the roof and back wall (one piece)?

Any guidance at all would be greatly appreciated.
Should I make the shape in another program and import it as an object?

The roof has many strange angles on the edges and from bottom to top.

Picture can be found here and if you are keen it is called the i-house and it is under Works>House>i-House on this website
http://www.katsufumikubota.jp/html/index-e.html

Thankyou very much for your help.

Miked

How do they build that roof IRL? It seem pretty thin in the ends and by judging of the site it could be windy....I'm very curious about the construction.
/Mats

Re: The Roof of I–House Katsufumi Kubota

Thomas Holm — Wed, 23 Sep 2009 09:30:03 GMT

Mats_Knutsson wrote:
How do they build that roof IRL? It seem pretty thin in the ends and by judging of the site it could be windy....I'm very curious about the construction.

Guess: Fiber-reinforced concrete.

Re: The Roof of I–House Katsufumi Kubota

Mats_Knutsson — Thu, 24 Sep 2009 13:38:09 GMT

Thomas wrote:
Mats_Knutsson wrote:
How do they build that roof IRL? It seem pretty thin in the ends and by judging of the site it could be windy....I'm very curious about the construction.
Guess: Fiber-reinforced concrete.

The edges look razor sharp...couldn't be concrete!?

Re: The Roof of I–House Katsufumi Kubota

Thomas Holm — Thu, 24 Sep 2009 14:16:23 GMT

The edges look razor sharp...couldn't be concrete!?

I've seen (and cast in rubber-coated formwork) white concrete mixed from white cement, fine-grade sand and plastic (polymer) fibers of some kind. Gives razor-sharp edges if you like. But I don't have the recipe.

Re: The Roof of I–House Katsufumi Kubota

Anonymous — Thu, 24 Sep 2009 16:09:39 GMT

They look razor sharp but I'd guess something like a 2cm min. radius to allow ladders etc for maintenance.

I like the fiber reinf theory. I'd like to think it is a modern uber-material engineered for that purpose. I mean the house does not appear to have been built on the cheap. Concrete PSI values are 60,000PSI+, I imagine additives for edge/surface cohesion are available.

Hm... Edge contraction cracks alone would suggest a covering of some sort. Curing controls were probably a nightmare. I also wonder about dirt streaks on that underside, could be that we are actually looking at a matte aluminum or composite edge with a very small reveal to create a drip ledge.

Very nice architecture, thanks to Miked for bringing it up.

Mark

Re: The Roof of I–House Katsufumi Kubota

Mats_Knutsson — Thu, 24 Sep 2009 18:27:18 GMT

snapcrackle wrote:
. I'd like to think it is a modern uber-material engineered for that purpose. ed for bringing it up. Mark

Yeah!!! Now we're talking. Molded aluminum frame anchored in a fiber lightweight concrete slab-roof-kind-of-thing... Beautiful nevertheless.

Re: The Roof of I–House Katsufumi Kubota

Gerald Hoffman — Thu, 24 Sep 2009 19:22:03 GMT

If you go to the Flash presentation it indicates Concrete and Steel frame. You could perhaps achieve the edges including drip edges with embedded SS profiles which would give a nice clean edge. I suspect there is some kind of coating on the concrete as well. Very interesting.

Cheers,

Re: The Roof of I–House Katsufumi Kubota

Anonymous — Thu, 24 Sep 2009 20:05:27 GMT

OK, my apologies for getting clearly off topic; sorry; there, done.

Gerald, you have to be right about the coating. Post 9-11 the gov. sprayed open web concrete blocks with the rubberized spray on compound used to protect pick-up truck beds, the blocks could be dropped 12 feet onto a hard surface without suffering any chipping or cracking!

Mark
PS "Simplify, then exaggerate."

Re: The Roof of I–House Katsufumi Kubota

Ernest Atanasiu — Fri, 25 Sep 2009 09:00:56 GMT

What i'd really like to know is how he did the slabs on the M-clinic building.