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. |
7.5.2.13.3 Formal representation
TYPE IfcDuctFittingTypeEnum = ENUMERATION OF
(BEND
,CONNECTOR
,ENTRY
,EXIT
,JUNCTION
,OBSTRUCTION
,TRANSITION
,USERDEFINED
,NOTDEFINED);
END_TYPE;