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Walls trimmed by roof are visible at upper roof plane.

Robert Nichols
Advocate
I probably knew the answer to this at one point, but baffling me now.

I have interior walls that are trimmed by a roof above. But the cut is apparently occurring at the top/exterior plane of the roof, rather than the bottom interior side of the roof. Thus, I am seeing the "footprint" of the walls on the top of the roof where I should be seeing uninterrupted roof finish material.

I get the desired result when using conventional SEO operations, but the "trim elements to roof/shell" is easier to use, and I'm accustomed to getting the desired result with that command.

What I am overlooking?

Thanks.
Mac Studio, 32gb ram, ArchiCAD v26 (Apple Silicon) MacOS 13
3 REPLIES 3
David Maudlin
Rockstar
Robert:

This is caused by the strength of Intersection Priority of the Building Materials: the Wall should be weaker than the Roof.

David
David Maudlin / Architect
www.davidmaudlin.com
Digital Architecture
AC27 USA • iMac 27" 4.0GHz Quad-core i7 OSX11 | 24 gb ram • MacBook Pro M3 Pro | 36 gb ram OSX14
Dontknow
Enthusiast
Here is a video how it works.
Architectural construction designer, draftsman, modeller
ArchiCAD 25.
Robert Nichols
Advocate
Thanks, David and Dontknow. I just spaced out for a second there. When you've been using ArchiCAD since v4, every feature that came since then still seems new, and I forget about them! Obviously, material priorities were a very welcome improvement when they showed up.
Mac Studio, 32gb ram, ArchiCAD v26 (Apple Silicon) MacOS 13