composite wall intersections issues

[Achille Pavlidis]

In the sceenshots attached below, two composite walls made of the same building materials intersect. The difference is that the wider wall has en extra row of brick and insulation and air gap between the brick rows. As the two walls intersect, the inside plaster skin intersects correctly, but as you can see the outer plaster skins don’t intersect at all. Also it is preferred the brick row of the narrow wall to intersect with

Also the core skin of the narrow wall does not intersect with the outer brick skin of the wider wall. Is there any way to make this work properly?

[Laszlo Nagy]

Barry,
I think this solution shown by your last attached image works because the inner brick skin of the vertical Wall is not the same Building Material (BM) as the outer brick skin (which is the same BM as the brick skin in the horizontal Wall).
As far as I can see, in Achille's original case all three brick skins are the same BM, in which case the horizontal brick skin will connect to the right brick of the vertical Wall and will not extend to its left brick skin. That is what causes the issue: that all brick skins are the same BM.

[Barry Kelly]

Yes if all the skins are the same BMs then they will simply trim with the first skin that is the same or a stronger BM and then there will be nothing left to trim the other skins which may be weaker.
So I would not have the same BMs in different skins of the same wall.
I would have an 'inner brick' BM and an 'outer brick' BM with the outer skins generally being stronger.
The same with the plaster - 'inner plaster' and 'outer plaster'.

Maybe this is why I have never really had any problems (apart from the fact I generally don't model the finishes and cavity insulation anyway).
I do have double brick walls that are the same brick inside and out but the outside leaf is always stronger and I actually make my cavity the strongest of all as I always want my cavity to be continuous.

Barry.

[Laszlo Nagy]

Yes, that is another way of doing it.

But what I am thinking now in general is that the bets would be if we were able to manually override how ArchiCAD generates these joints. So, for example, we could instruct ArchiCAD with a few clicks to extend that horizontal brick to the outer brick skin of the vertical Wall. That would provide a solution for all cases.

[Achille Pavlidis]

I have to say that yesterday this tip was working, but today it doesn't...

for some reason when I set the extra skin to have 0 thickness, the wall shows OK in floor plan, but the core completelly disappears in 3D view...


Anyway I agree with Laszlo, something has to be done to allow some manual override of this joints in special occasions

[Achille Pavlidis]

are you 100% sure that we can set 0 thickness skins?

I'm getting error reports every time I open a 3d window...

[Barry Kelly]

It works in plan but not 3D.
Apart from the error message you will find the skin next to the zero thickness skin will disappear.

Barry.

[Laszlo Nagy]

Yes, it is true, it doesn't work in 3D. I only looked at it in 2D.
If I set 0 for a skin thickness, it will be degenerated in 3D.
But I could set 0.1 mm, or even 0.01 mm for a skin, and then it worked in 3D.
At that thickness the skin is so thin it is practically invisible unless you zoom in very very close.