Defined in File Ifc4x3_rc1.h
IfcPhysicalQuantity: public IfcUtil::IfcBaseEntity¶
The physical quantity, IfcPhysicalQuantity, is an abstract entity that holds a complex or simple quantity measure together with a semantic definition of the usage for the single or several measure value.
The Name attribute defines the actual usage or kind of measure. The interpretation of the name label has to be established within the actual exchange context. In addition an informative text may be associated to each quantity by the Description attribute.
HISTORY New entity in IFC2x. It replaces the calcXxx attributes used in previous IFC Releases.
Name of the element quantity or measure. The name attribute has to be made recognizable by further agreements.
Whether the optional attribute Description is defined for this IfcPhysicalQuantity.
Further explanation that might be given to the quantity.
IfcPhysicalQuantity(std::string v1_Name, boost::optional<std::string> v2_Description)¶