#### 7.3.3.7 IfcPipeFitting

| Raccord de tuyauterie
| Rohrverbinder

A pipe fitting is a junction or transition in a piping flow distribution system used to connect pipe segments, resulting in changes in flow characteristics to the fluid such as direction or flow rate.

> HISTORY New entity in IFC4

## Plumbing System Design

Instance diagram

Identity

The Identity concept applies to this entity.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  | - |  |  |  |
Export |  |  |  |  |  |  |  | R | - |  | R | R | R

Object Typing

The Object Typing concept applies to this entity as shown in Table 88.

Type
IfcPipeFittingType
Table 88 — IfcPipeFitting Object Typing

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  |
Export |  |  |  |  |  |  |  |  |  |  | R |  | R

Properties for Occurrences

The Properties for Occurrences concept applies to this entity as shown in Table 89.

PredefinedType | Name
--- | ---
| Pset_PipeFittingOccurrence
| Pset_PipeFittingPHistory
BEND | Pset_PipeFittingTypeBend
| Pset_PipeFittingTypeCommon
JUNCTION | Pset_PipeFittingTypeJunction
Table 89 — IfcPipeFitting Properties for Occurrences

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  |
Export |  |  |  |  |  |  |  |  |  |  | R |  | R

Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 90.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  |
Export |  |  |  |  |  |  |  |  |  |  |  |  | R

Ports

The Ports concept applies to this entity as shown in Table 91.

PredefinedType | Name | Flow | Type | Description
--- | --- | --- | --- | ---
BEND | Inlet | SINK | NOTDEFINED | The flow inlet.
BEND | Outlet | SOURCE | NOTDEFINED | The flow outlet.
CONNECTOR | Inlet | SINK | NOTDEFINED | The flow inlet.
CONNECTOR | Outlet | SOURCE | NOTDEFINED | The flow outlet.
ENTRY | Outlet | SOURCE | NOTDEFINED | The flow outlet.
EXIT | Inlet | SINK | NOTDEFINED | The flow inlet.
JUNCTION | Inlet | SINK | NOTDEFINED | The flow inlet.
JUNCTION | Outlet#1 | SOURCE | NOTDEFINED | The left flow outlet.
JUNCTION | Outlet#2 | SOURCE | NOTDEFINED | The right flow outlet.
OBSTRUCTION | Inlet | SINK | NOTDEFINED | The flow inlet.
OBSTRUCTION | Outlet | SOURCE | NOTDEFINED | The flow outlet.
Table 91 — IfcPipeFitting Ports

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  |
Export |  |  |  |  |  |  |  |  |  |  | R |  | R

XSD Specification:

<xs:element name="IfcPipeFitting" type="ifc:IfcPipeFitting" substitutionGroup="ifc:IfcFlowFitting" nillable="true"/>
<xs:complexType name="IfcPipeFitting">
<xs:complexContent>
<xs:extension base="ifc:IfcFlowFitting"/>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcPipeFitting

| SUBTYPE OF (IfcFlowFitting);

PredefinedType | : | OPTIONAL IfcStrippedOptional;

| WHERE

CorrectPredefinedType | : | NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcPipeFittingTypeEnum.USERDEFINED) OR ((PredefinedType = IfcPipeFittingTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned | : | (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCPIPEFITTINGTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));

END_ENTITY;

Formal Propositions:

CorrectPredefinedType | : | Either the PredefinedType attribute is unset (e.g. because an IfcPipeFittingType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned | : | Either there is no pipe fitting type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcPipeFittingType.

Inheritance Graph:

ENTITY IfcPipeFitting

| ENTITY IfcRoot

GlobalId | : | IfcGloballyUniqueId;
OwnerHistory | : | OPTIONAL IfcOwnerHistory;
Name | : | OPTIONAL IfcLabel;
Description | : | OPTIONAL IfcText;

| ENTITY IfcObjectDefinition

| INVERSE

HasAssignments | : | SET OF IfcRelAssigns FOR RelatedObjects;
Nests | : | SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy | : | SET OF IfcRelNests FOR RelatingObject;
HasContext | : | SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy | : | SET OF IfcRelAggregates FOR RelatingObject;
Decomposes | : | SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations | : | SET OF IfcRelAssociates FOR RelatedObjects;

| ENTITY IfcObject

ObjectType | : | OPTIONAL IfcStrippedOptional;

| INVERSE

IsDeclaredBy | : | SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares | : | SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy | : | SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy | : | SET OF IfcRelDefinesByProperties FOR RelatedObjects;

| ENTITY IfcProduct

ObjectPlacement | : | OPTIONAL IfcObjectPlacement;
Representation | : | OPTIONAL IfcProductRepresentation;

| INVERSE

ReferencedBy | : | SET OF IfcRelAssignsToProduct FOR RelatingProduct;

| ENTITY IfcElement

Tag | : | OPTIONAL IfcStrippedOptional;

| INVERSE

ConnectedTo | : | SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements | : | SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements | : | SET OF IfcRelInterferesElements FOR RelatingElement;
HasOpenings | : | SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
ProvidesBoundaries | : | SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom | : | SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure | : | SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

| ENTITY IfcDistributionElement

| INVERSE

HasPorts | : | SET OF IfcRelConnectsPortToElement FOR RelatedElement;

| ENTITY IfcDistributionFlowElement

| INVERSE

| ENTITY IfcFlowFitting

| ENTITY IfcPipeFitting

PredefinedType | : | OPTIONAL IfcStrippedOptional;

END_ENTITY;

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