IfcTransportElement

Natural language names
Beförderungsgerät
Transport Element
Equipement de transport
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcTransportElement
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      PredefinedTypeXMODIFIEDName changed from OperationType to PredefinedType.
      CapacityByWeightXDELETED
      CapacityByNumberXDELETED
IFC4 Addendum 1 4.0.1.0
    IfcTransportElement
      HasCoveringsADDED
IFC4x2 Candidate 4.2.0.0
    IfcTransportElement
      PositionedRelativeToADDED
IFC2x3 to IFC4 4.0.0.0
    IfcTransportElement
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      PredefinedTypeXMODIFIEDName changed from OperationType to PredefinedType.
      CapacityByWeightXDELETED
      CapacityByNumberXDELETED
IFC4 Addendum 1 4.0.1.0
    IfcTransportElement
      HasCoveringsADDED
IFC4x2 Candidate 4.2.0.0
    IfcTransportElement
      PositionedRelativeToADDED
IFC4x2 to IFC4x3_RC1
    IfcTransportElement
      PredefinedTypeXXMODIFIEDType changed from IfcTransportElementTypeEnum to IfcTransportElementTypeSelect.
Semantic definitions at the entity
Entity definition

A transport element is a generalization of all transport related objects that move people, animals or goods within a REMOVE {building or building complex} Facility. The IfcTransportElement defines the occurrence of a transport element, that (if given), is expressed by the IfcTransportElementType .

EXAMPLE Transportation elements include elevator (lift), escalator, moving walkway, etc.
NOTE More detailed equipment that may be a part of a transportation device, like a lifting hook, is defined as IfcDiscreteAccessory. It maybe included as a part of the IfcTransportElement by virtue of the objectified relationship IfcRelAggregates.
Transport element can describe fixed or non fixed elements, which can either be identified as specified operational assets within a facility or vehicles that interact with the facility as a user or customer.
In the case of operational assets, instances of IfcTransportElements can represent individual identifiable vehicles or structures with properties such as serial numbers, registration numbers etc. and be typed accordingly by instances of IfcTransportElementType.
In the case transport elements that interact as users or customers, such as cars on a road or vessels at a port, IfcTransportElementType is used to define element specifications which are used to design, analyse and provide operational constraints to the facility.
Depending on local classification systems transport elements and transportation systems in buildings are either considered as part of a built system, or as part of a built service system. Within IFC they are considered as part of a built system and may have to be mapped appropriately.

Attribute definitions
#AttributeTypeCardinalityDescription G
9PredefinedTypeIfcTransportElementTypeSelect? X
Formal Propositions
RuleDescription
CorrectPredefinedTypeEither the IfcTransportElement attribute is unset (e.g. because an IfcTransportElementType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssignedEither there is no transport element type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcTransportElementType.
Inherited definitions from supertypes
Entity inheritance IfcElement IfcProduct IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments. X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects
S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups. X
NestsIfcRelNests
@RelatedObjects
S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
X
IsNestedByIfcRelNests
@RelatingObject
S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
X
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE  The inverse attribute datatype has been added.
X
IsDecomposedByIfcRelAggregates
@RelatingObject
S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
DecomposesIfcRelAggregates
@RelatedObjects
S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
HasAssociationsIfcRelAssociates
@RelatedObjects
S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification. X
IfcObject
5ObjectTypeIfcLabel? The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED. X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects
S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
DeclaresIfcRelDefinesByObject
@RelatingObject
S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
IsTypedByIfcRelDefinesByType
@RelatedObjects
S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects
S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcProduct
6ObjectPlacementIfcObjectPlacement? Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system. X
7RepresentationIfcProductRepresentation? Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement. X
ReferencedByIfcRelAssignsToProduct
@RelatingProduct
S[0:?]Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product. X
PositionedRelativeToIfcRelPositions
@RelatedProducts
S[0:1]X
ReferencedInStructuresIfcRelReferencedInSpatialStructure
@RelatedElements
S[0:?]X
IfcElement
8TagIfcIdentifier? The tag (or label) identifier at the particular instance of a product, e.g. the serial number, or the position number. It is the identifier at the occurrence level. X
FillsVoidsIfcRelFillsElement
@RelatedBuildingElement
S[0:1]Reference to the IfcRelFillsElement Relationship that puts the element as a filling into the opening created within another element. X
ConnectedToIfcRelConnectsElements
@RelatingElement
S[0:?]Reference to the element connection relationship. The relationship then refers to the other element to which this element is connected to. X
IsInterferedByElementsIfcRelInterferesElements
@RelatedElement
S[0:?]Reference to the interference relationship to indicate the element that is interfered. The relationship, if provided, indicates that this element has an interference with one or many other elements.
NOTE  There is no indication of precedence between IsInterferedByElements and InterferesElements.
IFC4 CHANGE New inverse relationship.
X
InterferesElementsIfcRelInterferesElements
@RelatingElement
S[0:?]Reference to the interference relationship to indicate the element that interferes. The relationship, if provided, indicates that this element has an interference with one or many other elements.
NOTE  There is no indication of precedence between IsInterferedByElements and InterferesElements.
IFC4 CHANGE New inverse relationship.
X
HasProjectionsIfcRelProjectsElement
@RelatingElement
S[0:?]Projection relationship that adds a feature (using a Boolean union) to the IfcBuildingElement. X
HasOpeningsIfcRelVoidsElement
@RelatingBuildingElement
S[0:?]Reference to the IfcRelVoidsElement relationship that creates an opening in an element. An element can incorporate zero-to-many openings. For each opening, that voids the element, a new relationship IfcRelVoidsElement is generated. X
IsConnectionRealizationIfcRelConnectsWithRealizingElements
@RealizingElements
S[0:?]Reference to the connection relationship with realizing element. The relationship, if provided, assigns this element as the realizing element to the connection, which provides the physical manifestation of the connection relationship. X
ProvidesBoundariesIfcRelSpaceBoundary
@RelatedBuildingElement
S[0:?]Reference to space boundaries by virtue of the objectified relationship IfcRelSpaceBoundary. It defines the concept of an element bounding spaces. X
ConnectedFromIfcRelConnectsElements
@RelatedElement
S[0:?]Reference to the element connection relationship. The relationship then refers to the other element that is connected to this element. X
ContainedInStructureIfcRelContainedInSpatialStructure
@RelatedElements
S[0:1]Containment relationship to the spatial structure element, to which the element is primarily associated. This containment relationship has to be hierachical, i.e. an element may only be assigned directly to zero or one spatial structure. X
HasCoveringsIfcRelCoversBldgElements
@RelatingBuildingElement
S[0:?]Reference to IfcCovering by virtue of the objectified relationship IfcRelCoversBldgElement. It defines the concept of an element having coverings associated. X
IfcTransportElement
9PredefinedTypeIfcTransportElementTypeSelect? X
Definitions applying to General Usage

 Instance diagram


Concept usage

Object Typing

The Object Typing concept applies to this entity.

IfcTransportElement defines the occuurence of any transportation device, common information about transportation device types (or styles) is handled by IfcTransportElementType. The IfcTransportElementType (if present) may establish the common type name, usage (or predefined) type, common material layer set, common set of properties and common shape representations (using IfcRepresentationMap). The IfcTransportElementType is attached using the IfcRelDefinedByType.RelatingType objectified relationship and is accessible by the inverse IsTypedBy attribute.

If no IfcTransportElementType is attached (i.e. if only occurrence information is given) the PredefinedType should be provided. If set to .USERDEFINED. a user defined value can be provided by the ObjectType attribute.



Property Sets for Objects

The Property Sets for Objects concept template applies to this entity as shown in Table 89.

PsetNameProperties
Pset_TransportElementCommon
TemplatePropertyNameValueReference
Single ValueReferenceIfcIdentifier
Single ValueCapacityPeopleIfcCountMeasure
Single ValueCapacityWeightIfcMassMeasure
Single ValueFireExitIfcBoolean
Enumerated ValueStatusIfcLabel

Table 89 — IfcTransportElement Property Sets for Objects



Spatial Containment

The Spatial Containment concept applies to this entity.



mvdXML Specification
<?xml version="1.0" encoding="utf-8"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" uuid="e512056b-b073-4357-971e-3b8f997d2162" name="IfcTransportElement" applicableRootEntity="IfcTransportElement">
 <Applicability>
  <Template ref="b4e9c308-6382-4b6d-85b0-2d59d4531524" />
  <TemplateRules operator="and">
  </TemplateRules>
 </Applicability>
 <Concepts>
  <Concept uuid="24d8b270-b3e4-40c1-86e3-4f84056a47d3" name="Object Typing">
   <Template ref="35a2e10e-20df-40f4-ab2f-dacf0a6744f4" />
  </Concept>
  <Concept uuid="9bcc9bb8-5944-4cf8-a9a6-54d5f6daf27d" name="Property Sets for Objects">
   <Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
   <TemplateRules operator="and">
    <TemplateRule Parameters="PsetName[Value]=&apos;Pset_TransportElementCommon&apos;" />
   </TemplateRules>
  </Concept>
  <Concept uuid="09893729-e041-4efb-9577-b0a91e20c702" name="Spatial Containment">
   <Template ref="d9a3f822-0014-4bc2-8d94-9d9067759045" />
  </Concept>
 </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcProduct
Product PlacementProduct PlacementGeneral Usage
Product Geometric RepresentationProduct Geometric RepresentationGeneral Usage
IfcElement
Product Local PlacementProduct Local PlacementGeneral Usage
CoG GeometryCoG GeometryGeneral Usage
Box GeometryBox GeometryGeneral Usage
FootPrint GeometryFootPrint GeometryGeneral Usage
Body SurfaceOrSolidModel GeometryBody SurfaceOrSolidModel GeometryGeneral Usage
Body SurfaceModel GeometryBody SurfaceModel GeometryGeneral Usage
Body Tessellation GeometryBody Tessellation GeometryGeneral Usage
Body Brep GeometryBody Brep GeometryGeneral Usage
Body AdvancedBrep GeometryBody AdvancedBrep GeometryGeneral Usage
Body CSG GeometryBody CSG GeometryGeneral Usage
Mapped GeometryMapped GeometryGeneral Usage
Element VoidingElement VoidingGeneral Usage
Element ProjectingElement ProjectingGeneral Usage
Linear PlacementProduct Linear PlacementGeneral Usage
IfcTransportElement
Object TypingObject TypingGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Spatial ContainmentSpatial ContainmentGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcTransportElement" type="ifc:IfcTransportElement" substitutionGroup="ifc:IfcElement" nillable="true"/>
 <xs:complexType name="IfcTransportElement">
  <xs:complexContent>
   <xs:extension base="ifc:IfcElement">
    <xs:sequence>
     <xs:element name="PredefinedType" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcTransportElementTypeSelect"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcTransportElement
 SUBTYPE OF (IfcElement);
  PredefinedType : OPTIONAL IfcTransportElementTypeSelect;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR
((PredefinedType <> IfcTransportElementFixedTypeEnum.USERDEFINED) AND (PredefinedType <> IfcTransportElementNonFixedTypeEnum.USERDEFINED)) OR
(((PredefinedType = IfcTransportElementFixedTypeEnum.USERDEFINED) OR (PredefinedType = IfcTransportElementNonFixedTypeEnum.USERDEFINED)) AND EXISTS(SELF\IfcObject.ObjectType));
  CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR
('IFCPRODUCTEXTENSION.IfcTransportElementType' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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