IFC 4.3.x development

8.11.3.5 IfcDerivedUnitElement

8.11.3.5.1 Semantic definitions at the entity

NOTE  Definition according to ISO/CD 10303-41:1992
A derived unit element is one of the unit quantities which makes up a derived unit.

EXAMPLE  Newtons per square millimetre is a derived unit. It has two elements, Newton whose exponent has a value of 1 and millimetre whose exponent is -2.

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

HISTORY  New entity in IFC1.5.1.

8.11.3.5.1 Attributes

#Attribute Type Description
IfcDerivedUnitElement
1Unit IfcNamedUnitThe fixed quantity which is used as the mathematical factor.
2Exponent INTEGER The power that is applied to the unit attribute.

8.11.3.5.2 Entity inheritance

dot_inheritance IfcDerivedUnitElement IfcDerivedUnitElement

8.11.3.5.3 Formal representations

ENTITY IfcDerivedUnitElement;
	Unit : IfcNamedUnit;
	Exponent : INTEGER;
END_ENTITY;