Not without modeling it, sadly. The floor plan is a 2D scripted representation (switch the window to Projected, you'll see the same 'problem' as the section).
Luckily we mostly use it for plaster and that is 15-30 mm max and doesn't show too much on the 1:100 / 1:50 scale.
There's probably a wish on the forum already to vote on. Probably up there with 'better stair tool' as long standing wish!
Erwin Edel, Project Lead, Leloup Architecten
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