topic Re: Triangle in a Wall Intersection in Modeling

Triangle in a Wall Intersection

Luca Ancorati — Thu, 13 Mar 2025 08:49:43 GMT

Good morning everyone,
I have been having a problem for a while now with intersections between three walls with different characteristics or thicknesses.
When I intersect three walls creating a T, a triangle is formed at the center of the intersection, as shown in the attached file.

Can someone help me solve the problem?
Thanks

Ps. The material priorities are already correct

Re: Triangle in a Wall Intersection

Xandros — Sat, 15 Mar 2025 16:34:54 GMT

Good morning

have you tried different junction orders for the walls?

https://help.graphisoft.com/AC/28/int/_AC28_Help/040_ElementsVB/040_ElementsVB-272.htm#XREF_41668_Wall_Wall_Junctions

for example like this

Re: Triangle in a Wall Intersection

Luca Ancorati — Sat, 15 Mar 2025 16:35:18 GMT

Yes I tried, but the result is this

Re: Triangle in a Wall Intersection

rakurs — Sat, 15 Mar 2025 16:36:12 GMT

Check to see whether your wall core has the highest building material intersection priority number. The easiest way to do this is to select all the walls that you need in the intersection (all three of them) and then go to Options -> Element Attributes -> Building Materials. Then, disable the folder view and after that sort by "check mark" and all your used Building Materials should be on top and highlighted. Now, check their intersection priorities and try to fiddle with them.

Be wary. The actions you do here can have unforeseen consequences on other parts of the model, so be sure to take notes of default intersection priorities if you mess something up.

Good luck and let us now if it's fixed.

Re: Triangle in a Wall Intersection

Luca Ancorati — Thu, 13 Mar 2025 14:50:34 GMT

Thanks for the reply but, unfortunately I have already checked the material priorities several times and the rest of the project has no problem.

This triangle appears only when 3 walls with different material thicknesses are intersected.

I just can't get out of it...

Re: Triangle in a Wall Intersection

Lingwisyer — Fri, 14 Mar 2025 03:07:31 GMT

Any chance you can use a different reference line for wall 1 or 2?