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 are specified in an Enumeration. A TypeDefinition is available for each generic type (as the required attributes differ). Use Type Definition corresponding to this generic type. Type Definitions Type driven PropertySets PreDefined Type Associated PropertySet DuctFitting Pset_DuctFitting PipeFitting Pset_PipeFitting UserDefined NotDefined
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 IfcDistributionFlowElement;

FlowElementType

IfcDistributionFlowElementTypeEnum;

INVERSE

HasControlElements

SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;

ENTITY IfcFlowFitting;

PredefinedType

IfcFlowFittingTypeEnum;

PrimaryFittingType

IfcPrimaryFittingEnum;

END_ENTITY;