ARCHICAD’s flexible Roofs can be used to create both standard and abstract 3D shapes meeting a wide variety of needs.
Create a Single-plane Roof on the Floor Plan
Create a Single-plane Roof in the 3D Window
Crop Elements to Single-plane Roof
Create Special Roof Objects with RoofMaker
Trim Elements to Roof or Shell
Single-plane Roofs can be included in a Structural Analytical Model generated in ARCHICAD.
For details, see Structural Analytical Model.