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IfcInternalOrExternalEnum

This enumeration defines the different types of spaces or space boundaries in terms of either being inside the building (Internal) or being in / facing to the outer space (External).

History
New Enumeration in IFC Release 2.0

ENUMERATION
Internal
External
NotDefined

EXPRESS specification:

TYPE IfcInternalOrExternalEnum = ENUMERATION OF
( INTERNAL,
EXTERNAL,
NOTDEFINED);
END_TYPE;

References (2):

Name Type Referred through Express-G
IfcRelSpaceBoundary Entity
Attribute 'InternalOrExternalBoundary'
Diagram 3
IfcSpace Entity
Attribute 'InteriorOrExteriorSpace'
Diagram 3