IfcQuantityTime

Definition from IAI: An element quantity that defines a time measure to provide an 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.

EXAMPLE: The amount of time needed to pour concrete for a wall is given as a time quantity for the labour part of the recipe information.

HISTORY New entity in Release IFC 2x Edition 2

EXPRESS specification:

ENTITY IfcQuantityTime

SUBTYPE OF (

IfcPhysicalSimpleQuantity);

TimeValue

IfcTimeMeasure;

WHERE

WR21	:	NOT(EXISTS(SELF\IfcPhysicalSimpleQuantity.Unit)) OR (SELF\IfcPhysicalSimpleQuantity.Unit.UnitType = IfcUnitEnum.TIMEUNIT);
WR22	:	TimeValue >= 0.;

END_ENTITY;

Attribute definitions:

TimeValue

Time measure value of this quantity.

Formal Propositions:

WR21	:	If a unit is given, the unit type shall be time unit.
WR22	:	A valid weight quantity shall be greater than or equal to zero.

Inheritance graph

ENTITY IfcQuantityTime;

ENTITY IfcPhysicalQuantity;

Name

IfcLabel;

Description

OPTIONAL IfcText;

INVERSE

PartOfComplex

SET [0:1] OF IfcPhysicalComplexQuantity FOR HasQuantities;

ENTITY IfcPhysicalSimpleQuantity;

Unit

OPTIONAL IfcNamedUnit;

ENTITY IfcQuantityTime;

TimeValue

IfcTimeMeasure;

END_ENTITY;