IfcFlowFitting

IfcFlowFitting

Definition from IAI: A junction or transition in a flow distribution system (e.g., elbow, tee, etc.).

HISTORY: New entity in IFC R2.0.
ISSUES: See issues and change log for changes made in IFC R2x.

Geometry Use Definitions

The geometric representation of IfcFlowFitting is given by the IfcProductDefinitionShape, allowing multiple geometric representations. Included are:

Local Placement

The use of local placement is defined at the supertype IfcDistributionFlowElement.

Standard Geometric Representation

The use of Standard Geometric Representations is defined at the supertype IfcDistributionFlowElement.

EXPRESS specification:

ENTITY IfcFlowFitting

SUBTYPE OF (

IfcDistributionFlowElement);

PredefinedType

IfcFlowFittingTypeEnum;

PrimaryFittingType

IfcPrimaryFittingEnum;

WHERE

WR1

(PredefinedType <> IfcFlowFittingTypeEnum.USERDEFINED) OR ((PredefinedType = IfcFlowFittingTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcObject.ObjectType));

END_ENTITY;

Attribute definitions:

PredefinedType	:	Predefined generic types for flow fittings are specified in an enumeration. There may be a property set given for the predefined types.
PrimaryFittingType	:	Enumeration that identifies the primary type of fitting (i.e., elbow, transition, junction, etc.)

Formal Propositions:

WR1

References (1):

Name

Type

Referred through

Express-G

IfcDistributionFlowElement

Entity

Subtype

Diagram 1

Inheritance graph

ENTITY IfcFlowFitting;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

Decomposes

SET OF IfcRelDecomposes FOR RelatedObjects;

IsDecomposedBy

SET [0:1] OF IfcRelDecomposes FOR RelatingObject;

ENTITY IfcProduct;

ObjectPlacement

OPTIONAL IfcObjectPlacement;

Representation

OPTIONAL IfcProductRepresentation;

INVERSE

ReferencedBy

SET OF IfcRelAssignsToProduct FOR RelatingProduct;

ENTITY IfcElement;

Tag

OPTIONAL IfcIdentifier;

INVERSE

ConnectedTo

SET OF IfcRelConnectsElements FOR RelatingElement;

ConnectedFrom

SET OF IfcRelConnectsElements FOR RelatedElement;

ContainedInStructure

SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

ENTITY IfcDistributionElement;

ENTITY IfcDistributionFlowElement;

FlowElementType

IfcDistributionFlowElementTypeEnum;

INVERSE

HasControlElements

SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;

ENTITY IfcFlowFitting;

PredefinedType

IfcFlowFittingTypeEnum;

PrimaryFittingType

IfcPrimaryFittingEnum;

END_ENTITY;