IFC 4.3.x development IfcMeasureWithUnit 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. Attributes

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

dot_inheritance IfcMeasureWithUnit IfcMeasureWithUnit Formal representations

ENTITY IfcMeasureWithUnit;
	ValueComponent : IfcValue;
	UnitComponent : IfcUnit;