The 'Axis' representation using 'Curve3D' representation type is predominately used to align material profile sets to geometric representations of standard beams, columns, members, pipes, ducts and other longitudinal elements.
The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:
The following diagram shows the generic classes and relationships used when applying this concept.
In addition, concepts may have particular importance to common or standardised industry practices and scenarios. For these specific usage scenarios, the tables below shows a recommended list of general usage patterns that users may adopt.