Hi Polar Bear,
This is probably because you are using the same building material for both objects I think. If you need them to show a line then and want to use the same material you can duplicate the material and name it differently say "Wood-1" and the other one "Wood-2". Then set the beams to have the other material name.
Cheers,
Gerald Hoffman
“The simplification of anything is always sensational” GKC
Archicad 4.55 - 27-6000 USA
2019 MacBook Pro-macOS 15.0 (64GB w/ AMD Radeon Pro 5600M GPU)