Walls, Slabs, Roofs and Shells can be defined as composite structures.
1.Open the Element Settings dialog box for the element type.
2.In the Geometry and Positioning Panel, define the element’s structure as a composite by clicking on the “Composite” icon.
Note: Composite Structures are defined for specific element types: Wall, Slab, Roof, and/or Shell, by the “Use With” control, in the Options > Element Attributes > Composites. The composite structure pop-up in element Settings shows only those Composite Structures whose “Use With” control includes the element type you are defining. Composites are defined at Options > Element Attributes > Composites
4.The chosen composite structure is applied to the currently selected or created element.
Note: The view’s model’s Partial Structure Display settings will affect the display of composite elements.
Assign these definitions in the Options > Element Attributes > Composites.