IfcSIUnitName

Semantic definitions at the type

Type definition

Definition from ISO/CD 10303-41:1992: An SI unit name is the name of an SI unit. The definitions of the names of SI units are specified in ISO 1000 (clause 2).

NOTE Corresponding STEP name: SI_unit_name, please refer to ISO/IS 10303-41:1994 for the final definition of the formal standard.

ENUMERATION

AMPERE Unit for electric current.
BECQUEREL Unit for radioactivity.
CANDELA Unit for luminousintensity.
COULOMB Unit for electric charge.
CUBIC_METRE Unit for volume.
DEGREE_CELSIUS Unit for thermodynamic temperature.
FARAD Unit for electric capacitance.
GRAM Unit for mass.
GRAY Unit for absorbed radioactive dose.
HENRY Unit for inductance.
HERTZ Unit for frequency.
JOULE Unit for energy.
KELVIN Unit for thermodynamic temperature.
LUMEN Unit for luminous flux.
LUX Unit for illuminance.
METRE Unit for length.
MOLE Unit for amount of substance.
NEWTON Unit for force.
OHM Unit for electric resistance.
PASCAL Unit for pressure.
RADIAN Unit for plane angle.
SECOND Unit for time.
SIEMENS Unit for electric conductance.
SIEVERT Unit for radioactive dose equivalent.
SQUARE_METRE Unit for area.
STERADIAN Unit for solid angle.
TESLA Unit for magnetic flux density.
VOLT Unit for electric voltage.
WATT Unit for power.
WEBER Unit for magnetic flux.

HISTORY New entity in IFC Release 1.5.1.

Enumeration definition

Constant	Description
AMPERE
BECQUEREL
CANDELA
COULOMB
CUBIC_METRE
DEGREE_CELSIUS
FARAD
GRAM
GRAY
HENRY
HERTZ
JOULE
KELVIN
LUMEN
LUX
METRE
MOLE
NEWTON
OHM
PASCAL
RADIAN
SECOND
SIEMENS
SIEVERT
SQUARE_METRE
STERADIAN
TESLA
VOLT
WATT
WEBER

Formal representations

XSD Specification

 <xs:simpleType name="IfcSIUnitName">

  <xs:restriction base="xs:string">

   <xs:enumeration value="ampere"/>

   <xs:enumeration value="becquerel"/>

   <xs:enumeration value="candela"/>

   <xs:enumeration value="coulomb"/>

   <xs:enumeration value="cubic_metre"/>

   <xs:enumeration value="degree_celsius"/>

   <xs:enumeration value="farad"/>

   <xs:enumeration value="gram"/>

   <xs:enumeration value="gray"/>

   <xs:enumeration value="henry"/>

   <xs:enumeration value="hertz"/>

   <xs:enumeration value="joule"/>

   <xs:enumeration value="kelvin"/>

   <xs:enumeration value="lumen"/>

   <xs:enumeration value="lux"/>

   <xs:enumeration value="metre"/>

   <xs:enumeration value="mole"/>

   <xs:enumeration value="newton"/>

   <xs:enumeration value="ohm"/>

   <xs:enumeration value="pascal"/>

   <xs:enumeration value="radian"/>

   <xs:enumeration value="second"/>

   <xs:enumeration value="siemens"/>

   <xs:enumeration value="sievert"/>

   <xs:enumeration value="square_metre"/>

   <xs:enumeration value="steradian"/>

   <xs:enumeration value="tesla"/>

   <xs:enumeration value="volt"/>

   <xs:enumeration value="watt"/>

   <xs:enumeration value="weber"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcSIUnitName = ENUMERATION OF (

 AMPERE, 
 BECQUEREL, 
 CANDELA, 
 COULOMB, 
 CUBIC_METRE, 
 DEGREE_CELSIUS, 
 FARAD, 
 GRAM, 
 GRAY, 
 HENRY, 
 HERTZ, 
 JOULE, 
 KELVIN, 
 LUMEN, 
 LUX, 
 METRE, 
 MOLE, 
 NEWTON, 
 OHM, 
 PASCAL, 
 RADIAN, 
 SECOND, 
 SIEMENS, 
 SIEVERT, 
 SQUARE_METRE, 
 STERADIAN, 
 TESLA, 
 VOLT, 
 WATT, 
 WEBER);
END_TYPE;


 EXPRESS-G diagram