When you create a beam with the Beam Tool, ARCHICAD generates its Floor Plan display according to your choices in Beam Settings. Like other construction elements, a Beam’s essential structure is derived from its Building Material.
Use the Floor Plan Cut Plane, combined with element projection preferences, to determine which parts of the placed beam should be displayed.
See Floor Plan Cut Plane (Global Setting).
See also How to Display Individual Elements on the Floor Plan.
Global Settings for Beam Display
In Document > Model View > Model View Options (Construction Element Options), use the “Beams” options to set Beam display by view:
Display beams in their entirety, or just the reference axes, or just the contours.
Relevant topics
Beam Display on Floor Plan and Section
Use the Floor Plan and Section page of Beam Settings.
See Element Display in Floor Plan and Section.
Projection Mode
Once you have set Floor Plan Display, use Projection Mode to fine-tune each displayed component (Overhead, Uncut) of the Beam: as either Symbolic or Projected.
...
Floor Plan/Reflected Ceiling Plan Display (Stair Settings)
Each Stair has two groups of settings, defining display preferences for the Stair Symbol (and its components) on Floor Plan and on Reflected ...
Floor Plan Display of Doors/Windows
Floor Plan Display: Symbolic vs. Projected
Use the Floor Plan Display control in Door/Window Settings to define how to display the opening:
...