#### 5.4.3.23 IfcTransportElementType

| Type d'équipement de transport
| Beförderungsgerät - Typ

The element type IfcTransportElementType defines commonly shared information for occurrences of transport elements. The set of shared information may include:

- common properties within shared property sets
- common material information
- common shape representations

It is used to define a transport element specification (i.e. the specific product information that is common to all occurrences of that beam type). Transport element types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcTransportElementType are represented by instances of IfcTransportElement (or its subtypes).

> HISTORY New entity in IFC2x2.

Geometry Use Definition

The IfcTransportElementType may define the shared geometric representation for all transport element occurrences. The RepresentationMaps attribute refers to a list of IfcRepresentationMap's, that allow for multiple geometric representations (e.g. with IfcShaperepresentation's having an RepresentationIdentifier 'Box', 'FootPrint', or 'Body').

> NOTE The product shape representations are defined as RepresentationMaps (attribute of the supertype IfcTypeProduct), which get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[n] being an IfcMappedItem. See IfcTypeProduct for further information.

> NOTE The values of attributes RepresentationIdentifier and RepresentationType of IfcShapeRepresentation are restricted in the same way as those for IfcTransportElementType.

## Electrical System Design

Instance diagram

Identity

The Identity concept applies to this entity.

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

Properties for Types

The Properties for Types concept applies to this entity.

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

Product Type Assignment

The Product Type Assignment concept applies to this entity.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  | O |  |
Export |  |  |  |  |  |  |  |  |  |  | O |  |

Type-Based Ports

The Type-Based Ports concept applies to this entity.

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

Classification

The Classification concept applies to this entity.

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

XSD Specification:

<xs:element name="IfcTransportElementType" type="ifc:IfcTransportElementType" substitutionGroup="ifc:IfcElementType" nillable="true"/>
<xs:complexType name="IfcTransportElementType">
<xs:complexContent>
<xs:extension base="ifc:IfcElementType">
<xs:attribute name="PredefinedType" type="ifc:IfcTransportElementTypeEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcTransportElementType

| SUBTYPE OF (IfcElementType);

PredefinedType | : | IfcTransportElementTypeEnum;

| WHERE

CorrectPredefinedType | : | (PredefinedType <> IfcTransportElementTypeEnum.USERDEFINED) OR ((PredefinedType = IfcTransportElementTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));

END_ENTITY;

Attribute Definitions:

PredefinedType | : | Predefined types to define the particular type of the transport element. There may be property set definitions available for each predefined type.

Formal Propositions:

CorrectPredefinedType | : | The inherited attribute ElementType shall be provided, if the PredefinedType is set to USERDEFINED.

Inheritance Graph:

ENTITY IfcTransportElementType

| 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 IfcTypeObject

ApplicableOccurrence | : | OPTIONAL IfcStrippedOptional;
HasPropertySets | : | OPTIONAL SET [1:?] OF IfcPropertySetDefinition;

| INVERSE

Types | : | SET [0:1] OF IfcRelDefinesByType FOR RelatingType;

| ENTITY IfcTypeProduct

RepresentationMaps | : | OPTIONAL LIST [1:?] OF UNIQUE IfcStrippedOptional;
Tag | : | OPTIONAL IfcStrippedOptional;

| INVERSE

ReferencedBy | : | SET OF IfcRelAssignsToProduct FOR RelatingProduct;

| ENTITY IfcElementType

ElementType | : | OPTIONAL IfcStrippedOptional;

| ENTITY IfcTransportElementType

PredefinedType | : | IfcTransportElementTypeEnum;

END_ENTITY;

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