Natural language names
Distribution System Enum
Enumération des types de système de distribution
Change log
IFC2x3 to IFC4
Semantic definitions at the type
Type definition

This enumeration identifies different types of distribution systems. It is used to designate systems by their function as well as ports of devices within such systems to restrict connectivity to compatible connections.

HISTORY  New enumeration in IFC4.

Ports for cable carriers may be connected using IfcCableCarrierSegment and IfcCableCarrierFitting. Type objects for cable carrier segments and fittings (IfcCableCarrierSegmentType and IfcCableCarrierFittingType that are not specific to a particular system type may have ports with PredefinedType of NOTDEFINED which indicates that occurrences of such objects may connect to ports of any other cable-carrier based port. Valid enumerations for cable carriers are the same as that for cables, and may be asserted if ports of the contained cables are all of the same type.

Enumeration definition
AIRCONDITIONINGConditioned air distribution system for purposes of maintaining a temperature range within one or more spaces.
AUDIOVISUALA transport of a single media source, having audio and/or video streams.
CHEMICALArbitrary chemical further qualified by property set, such as for medical or industrial use.
CHILLEDWATERNonpotable chilled water, such as circulated through an evaporator.
COMPRESSEDAIRCompressed air system.
CONDENSERWATERNonpotable water, such as circulated through a condenser.
CONTROLA transport or network dedicated to control system usage.
CONVEYINGArbitrary supply of substances.
DATAA network having general-purpose usage.
DISPOSALArbitrary disposal of substances.
DOMESTICCOLDWATERUnheated potable water distribution system.
DOMESTICHOTWATERHeated potable water distribution system.
DRAINAGEDrainage collection system.
EARTHINGA path for equipotential bonding, conducting current to the ground.
ELECTRICALA circuit for delivering electrical power.
ELECTROACOUSTICAn amplified audio signal such as for loudspeakers.
EXHAUSTExhaust air collection system for removing stale or noxious air from one or more spaces.
FIREPROTECTIONFire protection sprinkler system.
FUELArbitrary supply of fuel.
GASGas-phase materials such as methane or natural gas.
HAZARDOUSHazardous material or fluid collection system.
HEATINGWater or steam heated from a boiler and circulated through radiators.
LIGHTINGA circuit dedicated for lighting, such as a fixture having sockets for lamps.
LIGHTNINGPROTECTIONA path for conducting lightning current to the ground.
MUNICIPALSOLIDWASTEItems consumed and discarded, commonly known as trash or garbage.
OILOil distribution system.
OPERATIONALOperating supplies system.
POWERGENERATIONA path for power generation.
RAINWATERRainwater resulting from precipitation which directly falls on a parcel.
REFRIGERATIONRefrigerant distribution system for purposes of fulfilling all or parts of a refrigeration cycle.
SECURITYA transport or network dedicated to security system usage.
SEWAGESewage collection system.
SIGNALA raw analog signal, such as modulated data or measurements from sensors.
STORMWATERStormwater resulting from precipitation which runs off or travels over the ground surface.
TELEPHONEA transport or network dedicated to telephone system usage.
TVA transport of multiple media sources such as analog cable TV, satellite TV, or over-the-air TV.
VACUUMVacuum distribution system.
VENTVent system for wastewater piping systems.
VENTILATIONVentilation air distribution system involved in either the exchange of air to the outside as well as circulation of air within a building.
WASTEWATERWater adversely affected in quality by anthropogenic influence, possibly originating from sewage, drainage, or other source.
WATERSUPPLYArbitrary water supply.
Formal representations
XML Specification
 <xs:simpleType name="IfcDistributionSystemEnum">
  <xs:restriction base="xs:string">
   <xs:enumeration value="airconditioning"/>
   <xs:enumeration value="audiovisual"/>
   <xs:enumeration value="chemical"/>
   <xs:enumeration value="chilledwater"/>
   <xs:enumeration value="communication"/>
   <xs:enumeration value="compressedair"/>
   <xs:enumeration value="condenserwater"/>
   <xs:enumeration value="control"/>
   <xs:enumeration value="conveying"/>
   <xs:enumeration value="data"/>
   <xs:enumeration value="disposal"/>
   <xs:enumeration value="domesticcoldwater"/>
   <xs:enumeration value="domestichotwater"/>
   <xs:enumeration value="drainage"/>
   <xs:enumeration value="earthing"/>
   <xs:enumeration value="electrical"/>
   <xs:enumeration value="electroacoustic"/>
   <xs:enumeration value="exhaust"/>
   <xs:enumeration value="fireprotection"/>
   <xs:enumeration value="fuel"/>
   <xs:enumeration value="gas"/>
   <xs:enumeration value="hazardous"/>
   <xs:enumeration value="heating"/>
   <xs:enumeration value="lighting"/>
   <xs:enumeration value="lightningprotection"/>
   <xs:enumeration value="municipalsolidwaste"/>
   <xs:enumeration value="oil"/>
   <xs:enumeration value="operational"/>
   <xs:enumeration value="powergeneration"/>
   <xs:enumeration value="rainwater"/>
   <xs:enumeration value="refrigeration"/>
   <xs:enumeration value="security"/>
   <xs:enumeration value="sewage"/>
   <xs:enumeration value="signal"/>
   <xs:enumeration value="stormwater"/>
   <xs:enumeration value="telephone"/>
   <xs:enumeration value="tv"/>
   <xs:enumeration value="vacuum"/>
   <xs:enumeration value="vent"/>
   <xs:enumeration value="ventilation"/>
   <xs:enumeration value="wastewater"/>
   <xs:enumeration value="watersupply"/>
   <xs:enumeration value="userdefined"/>
   <xs:enumeration value="notdefined"/>
EXPRESS Specification
TYPE IfcDistributionSystemEnum = ENUMERATION OF (

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcDistributionPort IfcDistributionSystem

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