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Section Plane

In one sentence: Place a cutting plane that generates 2-D orthographic views (plans, sections, elevations) from the 3-D model.

Overview

Workbench: BIM
Menu: Annotation → Section Plane
Command: Arch_SectionPlane

Creates an Arch::SectionPlane — a cutting plane that generates 2-D orthographic projections from the 3-D model. The plane can be oriented as a plan (horizontal cut), section (vertical cut), or elevation (side view).

How it works

  1. Place the section plane at the desired cut elevation or orientation.
  2. Set the Objects property to include all elements the section should cut.
  3. Use Drawing View (BIM_TDView) to extract a 2-D projection onto a Drawing Page.

Key properties

Property Description
Objects List of document objects included in the section
OnlySolids If True, cut only solid objects (ignore meshes and wires)
Clip If True, clip all geometry to the plane's extent
CutMargin Extra depth behind the cut plane to include in the view

Common mistakes and pitfalls

Section Plane shows no geometry

The Objects property is empty, or the objects are outside the plane's extent. Set Objects to include all elements you want sectioned, and ensure the plane intersects them.

See also