Inconsistent Wall Intersections – Same Walls, Different Behavior

[Heftor]

Hi everyone,

I'm running into a strange wall intersection issue and hoping someone can point me in the right direction.

I have three walls intersecting at two different locations:

1. Wall A (Concrete): 0 cm to 13.5 cm high (thinner than the other two)

2. Wall B (Plastic): 19 cm to 241 cm high

3. Wall C (Drywall): 0 cm to 316 cm high

At one intersection, everything works as expected – the drywall stops cleanly at the plastic wall.

However, at the other intersection, the drywall ignores the plastic wall and continues through to connect with the Concrete wall instead.

Both intersections involve the exact same three wall types and heights, yet they behave completely differently.

What I've already checked:

• All walls have the same renovation status.

• Building Material Priorities are the same.

• "Use legacy intersection method" is disabled.

• All walls in the same layer.
• Same reference lines positions

Has anyone seen this kind of inconsistent behavior? Are there specific settings or commands I should look at to force the drywall to consistently stop at the plastic wall?

Any advice would be greatly appreciated.

Thanks in advance!

Operating system used: Windows

[Lingwisyer]

Do they all have the same Junction Order?

[runxel]

Without "Clean Wall Intersections" being on the screenshots are not really that much informative.

[Barry Kelly]

It is strange that the reference lines are correct.

It could be the junction order as Ling suggests.

I am suspecting a wall in a hidden layer maybe?

Barry.

[Heftor]

Hi Runxel, 

Here you have the connection without Clean Wall Intersections:

[Heftor]

Hi Ling,

I have checked the Junction Order and this are the numbers:

both intersections have the same Junction order values.

Thanks for helping.

[Heftor]

Hi Ling,

I have checked the Junction Order and this are the numbers:

Walls in both intersections have the same Junction order values but the result is different.

Thanks for helping.

[Heftor]

This is the junction order:

and this is the screenshot with displaying all layers, and both intersections are isolated in a different place in the model:

Thanks for the help, Barry

[runxel]

Thanks, @Heftor.

Since the reference lines of the drywall and the small wall on top of the concrete wall are not touching each other, the small wall can not contribute to the intersection. Why you happen to manage it in one case: I don't know, I can't. In my test it always look like this

However if I prolong the drywall's ref line so the meet up:

Then it looks just fine.

[Stefan L_ · Accepted solution]

Maybe some inaccuracy?

@Heftor would you mind following my 'precise' instructions?