IFC 4.3.x development

8.15.3.21 IfcReinforcementBarProperties

8.15.3.21.1 Semantic definitions at the entity

IfcReinforcementProperties defines the set of properties for a specific combination of reinforcement bar steel grade, bar type and effective depth.

HISTORY  New entity in IFC2x2.

The total cross section area for the specific steel grade is always provided. Additionally also general reinforcing bar configurations as a count of bars may be provided as defined in attribute BarCount. In this case the nominal bar diameter should be identical for all given bars as defined in attribute NominalBarDiameter.

8.15.3.21.1 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
IfcReinforcementBarProperties
1 TotalCrossSectionAreaIfcAreaMeasure The total effective cross-section area of the reinforcement of a specific steel grade.
2 SteelGrade IfcLabel The nominal steel grade defined according to local standards.
3 BarSurface OPTIONAL IfcReinforcingBarSurfaceEnum Indicator for whether the bar surface is plain or textured.
4 EffectiveDepth OPTIONAL IfcLengthMeasure The effective depth, i.e. the distance of the specific reinforcement cross section area or reinforcement configuration in a row, counted from a common specific reference point. Usually the reference point is the upper surface (for beams and slabs) or a similar projection in a plane (for columns).
5 NominalBarDiameter OPTIONAL IfcPositiveLengthMeasure The nominal diameter defining the cross-section size of the reinforcing bar. The bar diameter should be identical for all bars included in the specific reinforcement configuration.
6 BarCount OPTIONAL IfcCountMeasure The number of bars with identical nominal diameter and steel grade included in the specific reinforcement configuration.

8.15.3.21.2 Entity inheritance

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

8.15.3.21.3 Formal representations

ENTITY IfcReinforcementBarProperties
 SUBTYPE OF (IfcPreDefinedProperties);
	TotalCrossSectionArea : IfcAreaMeasure;
	SteelGrade : IfcLabel;
	BarSurface : OPTIONAL IfcReinforcingBarSurfaceEnum;
	EffectiveDepth : OPTIONAL IfcLengthMeasure;
	NominalBarDiameter : OPTIONAL IfcPositiveLengthMeasure;
	BarCount : OPTIONAL IfcCountMeasure;
END_ENTITY;