topic Re: Wall Cleanup in Modeling

Wall Cleanup

Anonymous — Mon, 04 Jun 2007 18:39:33 GMT

I know this must have been covered before but I don't know how to search the archives. How do I get walls of different thicknesses to clean up automatically? Or what is the best way to do it manually? See picture:

Re: Wall Cleanup

TomWaltz — Mon, 04 Jun 2007 19:15:26 GMT

The easiest way is to make sure the reference line of both walls lines up (along the side of the wall that should align)

Re: Wall Cleanup

Anonymous — Mon, 04 Jun 2007 22:01:51 GMT

Specifically, I would intersect them as below, with the coplanar walls joined at point A and the perpendicular one forming a butt joint at point B. It may also work just fine if all three intersect at A, but there is a chance that the two thinner walls will form a miter leaving a line in elevation in the corridor. In my solution there may be a line in the inside elevation of the shaft wall, but I expect that is probably not a problem. Either solution should clean up in plan.

Re: Wall Cleanup

Anonymous — Wed, 06 Jun 2007 12:01:52 GMT

ok , talking about this , i have always have problems with this issue, usually i try many things " no obvious rules" if it didn't work i'll add the intersection shape as a "polygonal wall", but still i think i am doing something wrong

Re: Wall Cleanup

Anonymous — Wed, 06 Jun 2007 13:28:03 GMT

Here are three variations of your condition plus an asymmetrical offset. In all cases the diagonal wall must be offset to align with the intersection of the orthogonal ones. (Use offset instead of centerline - Modify Wall doesn't work if any centerline walls are selected.)

Re: Wall Cleanup

Anonymous — Wed, 06 Jun 2007 14:42:55 GMT

oooh!!! so this is the use of View reference lines option!!

THANX..but still i feel like .. really thanx!!

3 Wall node problem

Anonymous — Wed, 06 Jun 2007 18:23:39 GMT

Hi folks,

Here is an annoying problem: When I create 3 walls (same material and hotspot) linked by a node, the 2d view is perfect, but the 3d view creates lines in the nodes! Is there any standard procedure for this situation?...

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 10:00:09 GMT

Hi folks,

Sorry I didn't saw this thread and posted a new thread with the same situation...

Here is an annoying problem: When I create 3 walls with a "T" shape (same material and hotspot) linked by a node, the 2d view is perfect, but the 3d view creates lines in the nodes! Is there any standard procedure for this situation?...

Re: 3 Wall node problem

Anonymous — Thu, 07 Jun 2007 10:02:40 GMT

Sorry.... there was a thread with this subject here.

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 10:13:12 GMT

Hello,

are you sure that yours walls are put in a line ?
one of them in your picture (at the right bottom) seems to be
out of the line ?

Cheers

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 10:29:36 GMT

They are exactly aligned...

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 10:39:11 GMT

therefore except if in "3D windows setting", the "contours" is not off
I do not understand the problem.
Cheers
Jean-Luc

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 14:00:34 GMT

You have a couple of tricky ones here. Both are because two walls are forming a miter joint thus expressing the corner in what should be a smooth face. They are made more difficult by the differential heights and thicknesses.

A: Due to the different thicknesses of the outer walls, the only solution I can think of is to make a poly wall at the corner as a kind of 3D patch. If you model it as shown all the walls should clean up to it nicely. It will need to be trimmed (SEO or Trim to Roof) where it extends into the lower wall.

B: If the outside walls are really the same fill and thickness you can just extend the higher one to replace the lower and trim it with an SEO. Since the lower wall seems to enclose an open court (ie. no roof available) you would need to place the operator on a hidden layer, unless you need to model some coping there anyway.

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 14:30:56 GMT

yes I did a test and depending on the texture I see this line linking both
walls. However likely it does not affect the rendering. Moreover, if we
have to use SEO for such things...

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 14:51:24 GMT

Thanks Jean-Luc and Matthew,

Nice work-around and explanation Matthew!

But its really sad to know that an everyday situation like this has to be solved by a tricky work-around... Does anybody in GS knows about this matter?... Can we call this a bug?

Re: Wall Cleanup

Laura Yanoviak — Thu, 07 Jun 2007 15:01:23 GMT

Braza wrote:
Can we call this a bug?

From what I can tell from your posted image, you'd need control joints in those two locations anyway, so actually the model is accurate!

Re: Wall Cleanup

Anonymous — Thu, 07 Jun 2007 15:03:41 GMT

I got-like many people- lot of difficulties with wall intersections...normal
but may I ask you why it's disturbing you to see this line in 3D view?
you meet with some others issues then ?

Re: Wall Cleanup

SeaGeoff — Thu, 07 Jun 2007 20:54:25 GMT

Braza wrote:
Can we call this a bug?

Yes we can.

Laura wrote:
From what I can tell from your posted image, you'd need control joints in those two locations anyway, so actually the model is accurate!

Say what? In typical construction there is no reason to believe that the cladding will join where your wall do within ArchiCAD. A control joint is a thing. It has a dimension. If you want one, add one, exactly where you want it, but don't force me to have one. This is a line, a graphic problem, a bug.

Re: Wall Cleanup

Laura Yanoviak — Thu, 07 Jun 2007 21:03:40 GMT

Geoff wrote:
In typical construction there is no reason to believe that the cladding will join where your wall do within ArchiCAD.

No, but it is good practice to locate control joints at changes in wall height, although I've seen a lot of (typically residential) construction that disregards this practice. Also will depend on what type of cladding is being used...

Re: Wall Cleanup

SeaGeoff — Thu, 07 Jun 2007 21:26:14 GMT

In the earlier example the walls change height. But the display bug happens whether they do or not. Control joints are not an excuse and having to use an SEO to work around a bug in a very typical wall condition that occurs on every job is just not right.