IfcTunnelTypeEnum

Item	SPF	XML	Change	Description
IFC4X3_ADD2 to IFC4X4_draft
IfcTunnelTypeEnum			ADDED

Semantic definitions at the type

Type definition

The predefined type that collects all possible tunnel facility types together into the implemented enumeration.

Enumeration definition

Constant	Description
ACCESSTUNNEL	Passage from surface to areas of underground excavation.
SHAFT	An underground vertical or inclined passageway.
UTILITIES	A tunnel built for utilities such as water, gas or high voltage transmission.
RAILWAY	A tunnel mainly built for railway traffic.
ROAD	A tunnel mainly built for road traffic.
PEDESTRIAN	A tunnel mainly built for pedestrians.
METRO	A tunnel mainly built for metro traffic.
BICYCLE	A tunnel mainly built for bicycle traffic.
BYPASS	A secondary tunnel to allow a flow when the main tunnel is closed or blocked.
MAINTENANCE	A tunnel mainly built to enable tunnel maintenance.
UNDERGROUND_FACILITIES	A tunnel mainly built for other underground facilities.
RAMP	A tunnel connecting tunnels at different levels or a tunnel with the above ground.
USERDEFINED	User-defined type.
NOTDEFINED	Undefined type.

Formal representations

XML Specification

 <xs:simpleType name="IfcTunnelTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="accesstunnel"/>

   <xs:enumeration value="shaft"/>

   <xs:enumeration value="utilities"/>

   <xs:enumeration value="railway"/>

   <xs:enumeration value="road"/>

   <xs:enumeration value="pedestrian"/>

   <xs:enumeration value="metro"/>

   <xs:enumeration value="bicycle"/>

   <xs:enumeration value="bypass"/>

   <xs:enumeration value="maintenance"/>

   <xs:enumeration value="underground_facilities"/>

   <xs:enumeration value="ramp"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcTunnelTypeEnum = ENUMERATION OF (

 ACCESSTUNNEL, 
 SHAFT, 
 UTILITIES, 
 RAILWAY, 
 ROAD, 
 PEDESTRIAN, 
 METRO, 
 BICYCLE, 
 BYPASS, 
 MAINTENANCE, 
 UNDERGROUND_FACILITIES, 
 RAMP, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram