IfcSIPrefix

Type definition

NOTE  Definition according to ISO/CD 10303-41:1992

An SI prefix is the name of a prefix that may be associated with an SI unit. The definitions of SI prefixes are specified in ISO 1000 (clause 3).

NOTE  The prefix defines multiples and submultiples of the SI units.

NOTE  Type adapted from 
si_prefix defined in ISO 10303-41.

HISTORY  New entity in IFC1.5.1.

 

Enumeration definition

Constant Description
EXA 10^18.
PETA 10^15.
TERA 10^12.
GIGA 10^9.
MEGA 10^6.
KILO 10^3.
HECTO 10^2.
DECA 10.
DECI 10^-1.
CENTI 10^-2.
MILLI 10^-6.
MICRO 10^-6.
NANO 10^-9.
PICO 10^-12.
FEMTO 10^-15.
ATTO 10^-18.
 

 

TYPE IfcSIPrefix = ENUMERATION OF (
 EXA,
 PETA,
 TERA,
 GIGA,
 MEGA,
 KILO,
 HECTO,
 DECA,
 DECI,
 CENTI,
 MILLI,
 MICRO,
 NANO,
 PICO,
 FEMTO,
 ATTO);
END_TYPE;

 

 

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