IFC 4.3.0.1 (IFC4X3) development

5.3.2.4 IfcSequenceEnum

5.3.2.4.1 Semantic definition

IfcSequenceEnum is an enumeration that defines the different ways in which a time lag is applied to a sequence between two processes.

5.3.2.4.2 Type values

Type Description
FINISH_FINISH

The predecessor task must finish before the successor task may finish.

FINISH_START

The predecessor task must finish before the successor task may start.

START_FINISH

The predecessor task must start before the successor task may finish.

START_START

The predecessor task must start before the successor task may start.

USERDEFINED

User defined.

NOTDEFINED

Undefined.

Table 5.3.2.4.A

5.3.2.4.3 Formal representation

TYPE IfcSequenceEnum = ENUMERATION OF
	(FINISH_FINISH
	,FINISH_START
	,START_FINISH
	,START_START
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

5.3.2.4.4 References

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5.3.2.4.5 Changelog

  • item, USERDEFINED