IFC 4.3.x development

8.11.3.7 IfcMeasureWithUnit

8.11.3.7.1 Semantic definitions at the entity

NOTE  Definition according to ISO/CD 10303-41:1992
A measure with unit is the specification of a physical quantity as defined in ISO 31 (clause 2).

IfcMeasureWithUnit has two usages:
1. For representing measure value together with its unit on the entity type attribute level; thus overriding the IFC model global unit assignments.
2. For conversion based unit to give the conversion rate and its base.

NOTE  Corresponding ISO 10303 name: measure_with_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard.

HISTORY  New entity in IFC1.5.1.

8.11.3.7.1 Attributes

#Attribute Type Description
IfcMeasureWithUnit
1ValueComponentIfcValueThe value of the physical quantity when expressed in the specified units.
2UnitComponent IfcUnit The unit in which the physical quantity is expressed.

8.11.3.7.2 Entity inheritance

dot_inheritance IfcMeasureWithUnit IfcMeasureWithUnit

8.11.3.7.3 Formal representations

ENTITY IfcMeasureWithUnit;
	ValueComponent : IfcValue;
	UnitComponent : IfcUnit;
END_ENTITY;