IFC 4.3.2.20241204 (IFC4X3_ADD2) under development

4.2.2.1.8 Curve Segment Vertical

The enumeration of curve segments intended for use in the context of an IfcGradientCurve representing vertical alignment geometry.

The following diagram shows the generic classes and relationships used when applying this concept.

G IfcCurveSegment IfcCurveSegment      LayerAssignment [0:1]      StyledByItem [0:1] 1. Transition [1:1]      UsingCurves [1:?] 2. Placement [1:1] 3. SegmentStart [1:1] 4. SegmentLength [1:1] 5. ParentCurve [1:1] Arc_Segment Arc Segment IfcCurveSegment->Arc_Segment Clothoid_Transition_Segment Clothoid Transition Segment IfcCurveSegment->Clothoid_Transition_Segment Linear_Segment Linear Segment IfcCurveSegment->Linear_Segment Parabolic_Transition_Segment Parabolic Transition Segment IfcCurveSegment->Parabolic_Transition_Segment
Figure 4.2.2.1.8.A

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