What version of Archicad are you using?
In 24 you can create a complex profile beam or wall and simply split the rectangle profile into 4 triangles.
You don't even have to change the building material (fill) to be different for each triangle.
I am not sure what version this came into effect with - but definitely works in 24 - they no longer merge back into one fill.
Make sure the width and height stretch modifiers are active in the profile so you can stretch the wall/beam size in section (by dragging the corner node and choosing height or width stretch in the pet palette).
Unfortunately a simple fill (hatch) can not be made to automatically resize and fit a cross-section's profile.
There should also be an "X Box Symbol" object in the default library that you can use as an overlay (in 2D elements > Graphic Symbols).
Barry.
One of the forum moderators.
Versions 6.5 to 27
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