IFC 4.3.x development

8.15.3.23 IfcSectionProperties

8.15.3.23.1 Semantic definitions at the entity

IfcSectionProperties defines the cross section properties for a single longitudinal piece of a cross section. It is a special-purpose helper class for IfcSectionReinforcementProperties.

HISTORY  New entity in IFC2x2.

The section piece may be either uniform or tapered. In the latter case an end profile should also be provided. The start and end profiles are assumed to be of the same profile type. Generally only rectangular or circular cross section profiles are assumed to be used.

8.15.3.23.1 Attributes

# Attribute Type Description
IfcPropertyAbstraction
HasExternalReferencesSET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjectsReference to an external reference, e.g. library, classification, or document information, that is associated to the property definition.

> IFC4 CHANGE New inverse attribute.
IfcPreDefinedProperties
IfcSectionProperties
1 SectionType IfcSectionTypeEnum An indicator whether a specific piece of a cross section is uniform or tapered in longitudinal direction.
2 StartProfile IfcProfileDef The cross section profile at the start point of the longitudinal section.
3 EndProfile OPTIONAL IfcProfileDef The cross section profile at the end point of the longitudinal section.

8.15.3.23.2 Entity inheritance

dot_inheritance IfcSectionProperties IfcSectionProperties IfcPreDefinedProperties IfcPreDefinedProperties IfcSectionProperties->IfcPreDefinedProperties IfcReinforcementBarProperties IfcReinforcementBarProperties IfcReinforcementBarProperties->IfcPreDefinedProperties IfcPropertyAbstraction IfcPropertyAbstraction IfcPreDefinedProperties->IfcPropertyAbstraction IfcSectionReinforcementProperties IfcSectionReinforcementProperties IfcSectionReinforcementProperties->IfcPreDefinedProperties IfcPropertyAbstraction_children 3 more... IfcPropertyAbstraction_children->IfcPropertyAbstraction

8.15.3.23.3 Formal representations

ENTITY IfcSectionProperties
 SUBTYPE OF (IfcPreDefinedProperties);
	SectionType : IfcSectionTypeEnum;
	StartProfile : IfcProfileDef;
	EndProfile : OPTIONAL IfcProfileDef;
END_ENTITY;