You would have to run a complex profile beam along the top.
Barry.
One of the forum moderators. Versions 6.5 to 27 i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10 Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
If it needs to be one element you can also use SEO to add the profile beam to the slab and put the beam on a hidden layer afterwards. It will only show the shape in elevation / section / 3D though, in the floorplan it will be hidden.
