IfcDuctFittingTypeEnum

Semantic definitions at the type

Type definition

This enumeration is used to identify the primary purpose of a duct fitting. This is a very basic categorization mechanism to generically identify the duct fitting type. Subcategories of duct fittings are not enumerated.

Enumerated Item Definitions:

BEND: A fitting with typically two ports used to change the direction of flow between connected elements.
CONNECTOR: Connector fitting, typically used to join two ports together within a flow distribution system (e.g., a coupling used to join two duct segments).
ENTRY: Entry fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an outside air duct system intake opening).
EXIT: Exit fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an exhaust air discharge opening).
JUNCTION: A fitting with typically more than two ports used to redistribute flow among the ports and/or to change the direction of flow between connected elements (e.g, tee, cross, wye, etc.).
OBSTRUCTION: A fitting with typically two ports used to obstruct or restrict flow between the connected elements (e.g., screen, perforated plate, etc.).
TRANSITION: A fitting with typically two ports having different shapes or sizes. Can also be used to change the direction of flow between connected elements.
USERDEFINED: User-defined fitting.
NOTDEFINED: Undefined fitting.

HISTORY New enumeration in IFC2x2.

Enumeration definition

Constant	Description
BEND	A fitting with typically two ports used to change the direction of flow between connected elements.
CONNECTOR	Connector fitting, typically used to join two ports together within a flow distribution system (e.g., a coupling used to join two duct segments).
ENTRY	Entry fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an outside air duct system intake opening).
EXIT	Exit fitting, typically unconnected at one port and connected to a flow distribution system at the other (e.g., an exhaust air discharge opening).
JUNCTION	A fitting with typically more than two ports used to redistribute flow among the ports and/or to change the direction of flow between connected elements (e.g, tee, cross, wye, etc.).
OBSTRUCTION	A fitting with typically two ports used to obstruct or restrict flow between the connected elements (e.g., screen, perforated plate, etc.).
TRANSITION	A fitting with typically two ports having different shapes or sizes. Can also be used to change the direction of flow between connected elements.
USERDEFINED	User-defined fitting.
NOTDEFINED	Undefined fitting.

Formal representations

XSD Specification

 <xs:simpleType name="IfcDuctFittingTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="bend"/>

   <xs:enumeration value="connector"/>

   <xs:enumeration value="entry"/>

   <xs:enumeration value="exit"/>

   <xs:enumeration value="junction"/>

   <xs:enumeration value="obstruction"/>

   <xs:enumeration value="transition"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcDuctFittingTypeEnum = ENUMERATION OF (

 BEND, 
 CONNECTOR, 
 ENTRY, 
 EXIT, 
 JUNCTION, 
 OBSTRUCTION, 
 TRANSITION, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

	Duct Fitting Type Enum
	Énumération des types de raccord de gaine