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nathanburkholder
Contributor

Change wall joint when three walls hit the same spot

Hello,

I have spot where three walls joint at one location. I want to change the joint so that the double wall continues through as indicated by the red line. How can this be done? 

Screenshot 2026-07-05 152043.png

 

Operating system used: Windows 11

7 Replies 7
Barry Kelly
Moderator

Try adjusting the junction order value of the walls.

Make the 2 that you want to join the same number and the other wall on the left a lower number.

 

Barry.

One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
ryejuan
Advisor

I also encounter this issues like it can't solve the connection graphically granting that they are the same building material. Aside from adjusting the junction order are there any other ways?

In the end what is your Objective? ArchiCAD 9 onwards
CPU: i9-14900K @ 3.2Ghz; GPU: GeForce RTX 5080 super (16GB); SSD: XPG GAMMIX S70 1TB; RAM: 64GB @ 4200MT/s.
WINDOWS 11 PRO
Patrick M
Virtuoso

this seems to come up way too often for graphisoft to keep ignoring it. there are solutions to these issues, but they are anything but intuitive. 

wall connections are typically solved by a combination of:
-reference line position

-building material priority

-wall junction order

...

Barry has already suggested the most likely solution to fix this, the junction order. But as Ryejuan asked, are there other options... If this was my file, I would always start with reference line position. In the screen shot shared by the OP, try putting the reference line here:

Screenshot 2026-07-07 at 8.02.19 AM.png

Often the reference line needs to have an offset to keep walls positioned properly and joining in the correct order. Junction order by itself is never a catch all, and often results in a domino effect with junctions at the other ends of the walls being adjusted.

BIM solutions and trouble shooting (self proclaimed) expert. Using Archicad Version (all of them), on Mac OS (whatever is 1 version older than current)
Kumar Jo
Participant

Keep the left and bottom wall in separate layer with different intersection group than the double wall.

This is in one of my project where walls has to join 0,90 and 45 degrees. Pasted the photos before and after enabling the reference line. As I model the interior gyp. board finish separate, I have to keep those walls' reference line away from the core with different intersection group number. Reference lines of elements with same intersection group meeting at close or same point doesn't work well all the time.

 

KumarJo_0-1783451569457.png

 

KumarJo_1-1783451596566.pngKumarJo_2-1783451643613.png

 

 

 

|| AC 29 ||
|| AMD Ryzen 9 6900HX 32GB || Win 11 Pro || PNY nVIDIA RTX 4060Ti 16GB XLR8 ||
Barry Kelly
Moderator

If all of the reference lines end at the one point, it is just adjusting the junction order value.

No need to play with different layers and intersection group numbers.

 

BarryKelly_0-1783469928965.png

 

Barry.

One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Stefan L_
Rockstar

@Patrick M  schrieb:

... domino effect with junctions at the other ends...


GS obviously doesn't play domino, they don't care about other ends.

I don't expect this historical mess to be tackeled before I retire...

😔

Stefan - AC ...-29GER, WIN11
Barry Kelly
Moderator

Yes, the domino affect can be a problem.

Another solution is to place a column (even a custom shaped complex profile column) at the junction.

Or there is a 'patch' tool, but that is just a 2D cover up.

 

Barry.

One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11

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