Hi @m_blaess
That geometry is not currently supported by rebar shapes. Here are all the unsupported geometries in rebar shapes
https://help.autodesk.com/view/RVT/2024/ENU/?guid=GUID-054A2971-BA2D-46BF-A508-3D805F1C2666

You could create that bar using free form rebar, and keep workshop instructions as "keep straight".
To do this, switch the Geometry to free form rebar during sketch. This creates a single bar
To create a set, you can use aligned distribution free form rebar.
Please note that a "keep straight" free form rebar only reports the total length.
Ovidiu Paunescu, M.Sc. Str. Eng.
Sr. Product Owner | Autodesk Revit