4.1.7.1.3 Axis Geometry

Elements following a path provide an 'Axis' representation indicating a line segment or any arbitrary open bounded curve. Examples of such elements include walls, beams, columns, pipes, ducts, and cables. For elements that have a material profile set association indicating cross-section, a 'Body' representation may be generated based on the axis curve and material profiles. Curve styles may indicate particular colors, line thicknesses, and dash patterns for 2D rendering.

The representation identifier of the axis representation is:

IfcShapeRepresentation.RepresentationIdentifier = 'Axis'

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 table below shows a recommended list of general usage patterns that users may adopt.

Figure 4.1.7.1.3.A

General Usage

ApplicableEntity
IfcDistributionFlowElement
IfcFlowSegment
IfcFooting
IfcPile

Table 4.1.7.1.3.B