IFC 4.3.0.1 (IFC4X3) development

7.5.2.13 IfcDuctFittingTypeEnum

7.5.2.13.1 Semantic 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.

7.5.2.13.2 Type values

Type 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.

Table 7.5.2.13.A

7.5.2.13.3 Formal representation

TYPE IfcDuctFittingTypeEnum = ENUMERATION OF
	(BEND
	,CONNECTOR
	,ENTRY
	,EXIT
	,JUNCTION
	,OBSTRUCTION
	,TRANSITION
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

7.5.2.13.4 References

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