IfcDerivedUnitElement

Natural language names
Abgeleitete Einheit - Element
Derived Unit Element
Elément d'unité dérivée
Semantic definitions at the entity
Entity definition

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.

Attribute definitions
#AttributeTypeCardinalityDescription G
1UnitIfcNamedUnit The fixed quantity which is used as the mathematical factor. X
2ExponentINTEGER The power that is applied to the unit attribute. X
Inherited definitions from supertypes
Entity inheritance
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcDerivedUnitElement
1UnitIfcNamedUnit The fixed quantity which is used as the mathematical factor. X
2ExponentINTEGER The power that is applied to the unit attribute. X
Formal representations
XML Specification
 <xs:element name="IfcDerivedUnitElement" type="ifc:IfcDerivedUnitElement" substitutionGroup="ifc:Entity" nillable="true"/>
 <xs:complexType name="IfcDerivedUnitElement">
  <xs:complexContent>
   <xs:extension base="ifc:Entity">
    <xs:sequence>
     <xs:element name="Unit" type="ifc:IfcNamedUnit" nillable="true"/>
    </xs:sequence>
    <xs:attribute name="Exponent" type="xs:long" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcDerivedUnitElement;
  Unit : IfcNamedUnit;
  Exponent : INTEGER;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcDerivedUnit

Link to this page  Link to this page