#### 5.4.2.1 IfcTransportElementTypeEnum

This enumeration is used to identify primary transport element types.

> HISTORY New enumeration in IFC2x.

> IFC4 CHANGE New enumerators CRANEWAY and LIFTINGGEAR added in IFC4.

Enumerated Item Definitions:

- ELEVATOR: Elevator or lift being a transport device to move people of good vertically.
- ESCALATOR: Escalator being a transport device to move people. It consists of individual linked steps that move up and down on tracks while keeping the threads horizontal.
- MOVINGWALKWAY: Moving walkway being a transport device to move people horizontally or on an incline. It is a slow conveyor belt that transports people.
- CRANEWAY: A crane way system, normally including the crane rails, fasteners and the crane. It is primarily used to move heavy goods in a factory or other industry buildings.
- LIFTINGGEAR: A device used for lifting or lowering heavy goods. It may be manually operated or electrically or pneumatically driven.

XSD Specification:

<xs:simpleType name="IfcTransportElementTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="elevator"/>
<xs:enumeration value="escalator"/>
<xs:enumeration value="movingwalkway"/>
<xs:enumeration value="craneway"/>
<xs:enumeration value="liftinggear"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcTransportElementTypeEnum = ENUMERATION OF (
| ELEVATOR, ESCALATOR, MOVINGWALKWAY, CRANEWAY, LIFTINGGEAR, USERDEFINED, NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

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