topic Re: Can anyone help me model this? in Modeling

Can anyone help me model this?

Anonymous — Sun, 23 Nov 2008 17:27:04 GMT

Hi there,

Im having a few problems modelling a particular part of an existing building, and i wanted to know if anyone could suggest a way of achieving this.

The structure is almost triangular in shape, yet the side walls slant outwards as the structure becomes higher at about 105 degrees. I have attached a screenshot of what i have been able to do thus far, with little success. I have attempted to use a typical slanted wall at the desired degrees to achieve the side walls, but the front semi-circular face of the structure remains straight unlike the slanted walls. Therefore i dont know of a way to link these walls at their varying slants.

Iv also attached a few photos of the structure, and if anyone can suggest a way of achieving this i would be greatly appreciative!

Thanks alot,

James

Re: Can anyone help me model this?

Anonymous — Sun, 23 Nov 2008 17:31:59 GMT

Photo attached of existing

Re: Can anyone help me model this?

Anonymous — Sun, 23 Nov 2008 17:33:04 GMT

Photo attached of existing

Re: Can anyone help me model this?

Dwight — Sun, 23 Nov 2008 18:31:03 GMT

Using, since all words come from the Greek, the Complex Profile, you'll make two really complex profiles that intersect , with one acting as the wall and the other as a Solid Element Operator.

1:Establish the basic sloped wall section and place it.
Create a complimentary vertical wall type cutter section that will orbit into the sloped wall section, cutting the slope back to vertical.

Once again, like so many of these complex geometric operations, you don't have enough information available to do anything but an approximate answer.....

Re: Can anyone help me model this?

Dwight — Sun, 23 Nov 2008 18:31:58 GMT

Here are the sketches i used

Re: Can anyone help me model this?

Dwight — Sun, 23 Nov 2008 18:57:45 GMT

BTW: Love the roof details: Where is this place?

Re: Can anyone help me model this?

Anonymous — Sun, 23 Nov 2008 20:15:33 GMT

....this is one of those times i realise how inexperienced an archicad user i am!

So essentially, im creating two complex profiles: 1 for the slanted wall, and 2 for the straight edge.

Im a little confused as to how you've joined the two together to achieve an almost seamless transition though?

Thanks for your help!

PS The building is called the exchange building and its based at Nottingham university in the UK.

Re: Can anyone help me model this?

Dwight — Sun, 23 Nov 2008 20:19:59 GMT

You've just seen two of the newer, higher-level functions.

Search the Wiki for how to use them.

Complex Profile. Solid Element Operation.

This is just two complex profiles mooshed together with radii that complement the curves. I've shown you all i can schematically.

The trick is in defining the outer profile to cut the right depth.

You might break this up into several steps.

Re: Can anyone help me model this?

David Maudlin — Mon, 24 Nov 2008 13:47:48 GMT

peach49 wrote:
Im having a few problems modelling a particular part of an existing building, and i wanted to know if anyone could suggest a way of achieving this.

The structure is almost triangular in shape, yet the side walls slant outwards as the structure becomes higher at about 105 degrees.

James:

You might be able to achieve this by creating a slanted wall in the Profile Manager, then creating the straight and curved walls with the wall tool using this profile. You may need the more complex solution illustrated by Dwight, depending on the exact result you desire.

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: Can anyone help me model this?

Anonymous — Mon, 24 Nov 2008 17:29:35 GMT

peach49 wrote:
Im having a few problems modelling a particular part of an existing building, and i wanted to know if anyone could suggest a way of achieving this.

Hi James,

Maybe filleting two slanted walls together could help you.

Cheers.
Adrian Tudoreanu

Re: Can anyone help me model this?

Anonymous — Mon, 24 Nov 2008 22:46:52 GMT

LOL! how easy is that compaired to the other methods!...

Re: Can anyone help me model this?

Dwight — Mon, 24 Nov 2008 23:40:12 GMT

That easy one is not the answer.

The problem was that the model needs to transit between a tilted wall to a vertical wall as it rounds the corner.

Re: Can anyone help me model this?

Anonymous — Tue, 25 Nov 2008 00:03:18 GMT

wouldnt that be this point between the 2 nodes where the fillet begins?

Re: Can anyone help me model this?

Dwight — Tue, 25 Nov 2008 00:07:03 GMT

Do one yourself and see that the wall remains tilted as it rounds the fillet line.

Re: Can anyone help me model this?

Anonymous — Tue, 25 Nov 2008 00:45:46 GMT

looks fine to me...

Re: Can anyone help me model this?

Dwight — Tue, 25 Nov 2008 01:08:59 GMT

do you see the difference now?

Re: Can anyone help me model this?

Anonymous — Tue, 25 Nov 2008 04:40:02 GMT

oh ok.. i was reading it as the curve NEEDED to be slanted. my bad