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.

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

• IfcRelSequence