IFC 4.3.0.1 (IFC4X3) development

5.4.2.16 IfcOpeningElementTypeEnum

5.4.2.16.1 Semantic definition

This enumeration defines the basic types for opening elements.

5.4.2.16.2 Type values

Type Description
OPENING

An opening as subtraction feature that cuts through the element it voids. It thereby creates a hole. An opening in addiion have a particular meaning for either providing a void for doors or windows, or an opening to permit flow of air and passing of light.

RECESS

An opening as subtraction feature that does not cut through the element it voids. It creates a niche or similar voiding pattern.

USERDEFINED

User-defined opening element.

NOTDEFINED

Undefined opening element.

Table 5.4.2.16.A

5.4.2.16.3 Formal representation

TYPE IfcOpeningElementTypeEnum = ENUMERATION OF
	(OPENING
	,RECESS
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

5.4.2.16.4 References

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