8.17.3.8 IfcQuantityTime

8.17.3.8.1 Semantic definition

IfcQuantityTime is an element quantity that defines a time measure to provide a property of time related to an element. It is normally given by the recipe information of the element under the specific measure rules given by a method of measurement.

8.17.3.8.5 Formal representation

ENTITY IfcQuantityTime
SUBTYPE OF (IfcPhysicalSimpleQuantity);
TimeValue : IfcTimeMeasure;
Formula : OPTIONAL IfcLabel;
WHERE
WR21 : NOT(EXISTS(SELF\IfcPhysicalSimpleQuantity.Unit)) OR
(SELF\IfcPhysicalSimpleQuantity.Unit.UnitType = IfcUnitEnum.TIMEUNIT);
WR22 : TimeValue >= 0.;
END_ENTITY;

8.17.3.8.6 References

8.17.3.8.7 Changelog

8.17.3.8.7.1 IFC4

• attribute, Formula