IFC 4.3.x development

6.2.2.4 IfcFlowDirectionEnum

6.2.2.4.1 Semantic definitions at the entity

This enumeration defines the flow direction at a distribution port.

  • For pipe-based ports, the direction is the physical flow direction.
  • For duct-based ports, the direction is the physical flow direction.

Items

SOURCE

A flow source, where a substance flows out of the connection.

SINK

A flow sink, where a substance flows into the connection.

SOURCEANDSINK

Both a source and sink, where a substance flows both into and out of the connection simultaneously.

NOTDEFINED

Undefined flow direction.

6.2.2.4.1 Formal representations

TYPE IfcFlowDirectionEnum = ENUMERATION OF
	(SOURCE
	,SINK
	,SOURCEANDSINK
	,NOTDEFINED);
END_TYPE;