7.5.3.51 IfcPipeSegment

Tronçon de tuyauterie
Rohr

A pipe segment is used to typically join two sections of a piping network.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 558.
Type
IfcPipeSegmentType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 558 — IfcPipeSegment Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 559.
PredefinedTypeName
 Pset_PipeConnectionFlanged
 Pset_PipeSegmentOccurrence
 Pset_PipeSegmentPHistory
 Pset_PipeSegmentTypeCommon
CULVERTPset_PipeSegmentTypeCulvert
GUTTERPset_PipeSegmentTypeGutter
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 559 — IfcPipeSegment Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 560.
Name
Qto_PipeSegmentBaseQuantities

Table 560 — IfcPipeSegment Quantity Sets



Material Profile Set Usage

The Material Profile Set Usage concept applies to this entity as shown in Table 561.
NameDescription
CasingMaterial from which the casing is constructed.
CoatingThe outer coating, if applicable.
InsulationThe insulating wrapping, if applicable.
LiningThe inner lining, if applicable.

Table 561 — IfcPipeSegment Material Profile Set Usage



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 562.
PredefinedTypeNameFlowTypeDescription
 InletSINKNOTDEFINEDThe flow inlet.
 OutletSOURCENOTDEFINEDThe flow outlet.

Table 562 — IfcPipeSegment Port Nesting




XSD Specification:

 <xs:element name="IfcPipeSegment" type="ifc:IfcPipeSegment" substitutionGroup="ifc:IfcFlowSegment" nillable="true"/>
 <xs:complexType name="IfcPipeSegment">
  <xs:complexContent>
   <xs:extension base="ifc:IfcFlowSegment">
    <xs:attribute name="PredefinedType" type="ifc:IfcPipeSegmentTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcPipeSegment
SUBTYPE OF IfcFlowSegment;
PredefinedType : OPTIONAL IfcPipeSegmentTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcPipeSegmentTypeEnum.USERDEFINED) OR ((PredefinedType = IfcPipeSegmentTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCPIPESEGMENTTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

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

Inheritance Graph:

ENTITY IfcPipeSegment
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 IfcLabel;
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 IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
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
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcFlowSegment
ENTITY IfcPipeSegment
PredefinedType : OPTIONAL IfcPipeSegmentTypeEnum;
END_ENTITY;

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