IfcElementAssemblyTypeEnum

Natural language names
Element Assembly Type Enum
Énumération des types d'assemblage d' éléments
Change log
ItemSPFXMLChangeDescription
IFC4x2 Candidate 4.2.0.0
    IfcElementAssemblyTypeEnum
      ABUTMENTADDED
      PIERADDED
      PYLONADDED
      CROSS_BRACINGADDED
      DECKADDED
IFC4x2 to IFC4x3_RC1
    IfcElementAssemblyTypeEnum
      MASTADDED
      SIGNALASSEMBLYADDED
      GRIDADDED
      SHELTERADDED
      SUPPORTINGASSEMBLYADDED
      SUSPENSIONASSEMBLYADDED
      TRACTION_SWITCHING_ASSEMBLYADDED
      TRACKPANELADDED
      TURNOUTPANELADDED
      DILATATIONPANELADDED
      RAIL_MECHANICAL_EQUIPMENT_ASSEMBLYADDED
      ENTRANCEWORKSADDED
      SUMPBUSTERADDED
      TRAFFIC_CALMING_DEVICEADDED
IFC4X3_ADD2 to IFC4X4_draft
    IfcElementAssemblyTypeEnum
      DUCTBANKADDED
      PRESUPPORTVAULTADDED
      PRESUPPORTFACEADDED
      RINGADDED
Semantic definitions at the type
Type definition

This enumeration defines the basic configuration types for element assemblies.

HISTORY  New enumeration in IFC2x2.

Enumeration definition
ConstantDescription
ACCESSORY_ASSEMBLY

Assembled accessories or components.

ARCH

A curved structure.

BEAM_GRID

Interconnected beams, located in one (typically horizontal) plane.

BRACED_FRAME

A rigid frame with additional bracing members.

GIRDER

A beam-like superstructure, such as bridge main girder extending between abutments and piers built up of beams, braces (as Members) etc. - may also be an aggregation of girder segments.

REINFORCEMENT_UNIT

Assembled reinforcement elements.

RIGID_FRAME

A structure built up of beams, columns, etc. with moment-resisting joints, such as gantry

SLAB_FIELD

Slabs, laid out in one plane.

TRUSS

A structure built up of members with (quasi) pinned joint.

ABUTMENT

A bridge abutment built up of walls, beams, slabs etc.

PIER

An intermediate support e.g. in a bridge, built up of walls, columns, beams etc.

PYLON

A vertical structure supporting cables in suspended or stayed structure.

CROSS_BRACING

A Structural linear member or assembly of memebrs inside a box girder or between girders, typically on a pier, to resist lateral forces and transfer them to the support.

DECK

A platform (such as floor or bridge deck) built up of beams, slabs.

MAST

An assembly of plates, members, cables or fasteners that form a vertical structure for the support or mounting of other equipment such as lights, sonar or wireless transmitters.

SIGNALASSEMBLY

An assembly to physically aggregate together one or more signal instances (and also sign instances) including any supporting structural elements such as a simple pole or a rigid frame gantry.

GRID

A framework of spaced cables or bars that are parallel to or cross each other.

SHELTER

A structure, fairly quick to setup, move or dismantle, used to give protection, especially from the weather or intrusion.

SUPPORTINGASSEMBLY

An assembly intends to support Overhead Contact Line System. It includes foundation, supporting elements and suspension assembly.

SUSPENSIONASSEMBLY

A complex assembly of components used to suspend elements or cable segments.

TRACTION_SWITCHING_ASSEMBLY

A common assembly used to insure the switching function. It is composed of switches, control instruments and other components.

TRACKPANEL

Trackwork ensuring the support and guidance of a vehicle along a route. It consists of assembly of rail, sleepers and fastenings.

TURNOUTPANEL

Trackwork ensuring the support and guidance of a vehicle along any given route among various diverging or intersecting tracks. Note: definition from NF EN 13232-1-2004.

DILATATIONPANEL

Device which permits longitudinal relative rail movement of two adjacent rails, while maintaining correct guidance and support. Note: definition from NF EN 13232-1-2004.

RAIL_MECHANICAL_EQUIPMENT_ASSEMBLY

A complex assembly made up of several components like blocking device, speed regulator, bias loaded inspector, track scale or controllable retarder.

ENTRANCEWORKS

An assembly forming the support structure of a chamber (lock, dock) gate and associated elements, plus the containment of operational equipment.

SUMPBUSTER

An obstacle (with oil catchment basin) installed typically in a bus lane to prevent other traffic with lower ground clearance from using it. Also Sump breaker or Sump trap.

TRAFFIC_CALMING_DEVICE

A structure on the carriageway to control the speed of vehicles.

NOTE Definition from ISO 6707-1: Encouragement of restrained and considerate behaviour by means such as road humps and reductions in width of the travelled way (US:traffic restraint, UK:speed bump). NOTE Definition from PIARC: Local carriageway layout (staggered section, choker) or physical device (central island, round- or flat-top road hump, speed bump, rumble strips, etc.) to control the speed of road vehicles.

DUCTBANK

A Duct Bank is two or more ducts or conduits used as part of a system. A duct bank is designed to protect and group or consolidate data and electrical cables to and from a facility. The cables are laid in PVC pipes or conduits. These conduit are bundled together and protected with either steel or reinforced concrete casings. Duct banks are often located underground. They can carry cables for all electrical wiring and data requirements in the facility as well as extra cables that are not for immediate use, but may be valuable for future requirements.

PRESUPPORTVAULT

Outwards inclined radial boreholes around the perimeter of the tunnel with various types of support forming a protective vault around and ahead of the excavation.

PRESUPPORTFACE

Horizontal boreholes in the face of the tunnel with various types of support, reinforcing and stabilising the ground ahead of the face and removed during subsequent excavation.

RING

The ring is the basic unit for construction progress in tunneling, and the position of the TBM (Tunnel Boring Machine) can be determined by the ring number. The rings are portions of cylinders with surfaces that can be either parallel or non-parallel, identified below:

  • parallel surfaces: straight ring
  • non parallel surfaces: tapered trapezoidal ring / tapered universal ring The ring is composed from IfcArchElement of type SEGMENT.
USERDEFINED

User-defined element assembly.

NOTDEFINED

Undefined element assembly.

Formal representations
XML Specification
 <xs:simpleType name="IfcElementAssemblyTypeEnum">
  <xs:restriction base="xs:string">
   <xs:enumeration value="accessory_assembly"/>
   <xs:enumeration value="arch"/>
   <xs:enumeration value="beam_grid"/>
   <xs:enumeration value="braced_frame"/>
   <xs:enumeration value="girder"/>
   <xs:enumeration value="reinforcement_unit"/>
   <xs:enumeration value="rigid_frame"/>
   <xs:enumeration value="slab_field"/>
   <xs:enumeration value="truss"/>
   <xs:enumeration value="abutment"/>
   <xs:enumeration value="pier"/>
   <xs:enumeration value="pylon"/>
   <xs:enumeration value="cross_bracing"/>
   <xs:enumeration value="deck"/>
   <xs:enumeration value="mast"/>
   <xs:enumeration value="signalassembly"/>
   <xs:enumeration value="grid"/>
   <xs:enumeration value="shelter"/>
   <xs:enumeration value="supportingassembly"/>
   <xs:enumeration value="suspensionassembly"/>
   <xs:enumeration value="traction_switching_assembly"/>
   <xs:enumeration value="trackpanel"/>
   <xs:enumeration value="turnoutpanel"/>
   <xs:enumeration value="dilatationpanel"/>
   <xs:enumeration value="rail_mechanical_equipment_assembly"/>
   <xs:enumeration value="entranceworks"/>
   <xs:enumeration value="sumpbuster"/>
   <xs:enumeration value="traffic_calming_device"/>
   <xs:enumeration value="ductbank"/>
   <xs:enumeration value="presupportvault"/>
   <xs:enumeration value="presupportface"/>
   <xs:enumeration value="ring"/>
   <xs:enumeration value="userdefined"/>
   <xs:enumeration value="notdefined"/>
  </xs:restriction>
 </xs:simpleType>
EXPRESS Specification
TYPE IfcElementAssemblyTypeEnum = ENUMERATION OF (
 ACCESSORY_ASSEMBLY,
 ARCH,
 BEAM_GRID,
 BRACED_FRAME,
 GIRDER,
 REINFORCEMENT_UNIT,
 RIGID_FRAME,
 SLAB_FIELD,
 TRUSS,
 ABUTMENT,
 PIER,
 PYLON,
 CROSS_BRACING,
 DECK,
 MAST,
 SIGNALASSEMBLY,
 GRID,
 SHELTER,
 SUPPORTINGASSEMBLY,
 SUSPENSIONASSEMBLY,
 TRACTION_SWITCHING_ASSEMBLY,
 TRACKPANEL,
 TURNOUTPANEL,
 DILATATIONPANEL,
 RAIL_MECHANICAL_EQUIPMENT_ASSEMBLY,
 ENTRANCEWORKS,
 SUMPBUSTER,
 TRAFFIC_CALMING_DEVICE,
 DUCTBANK,
 PRESUPPORTVAULT,
 PRESUPPORTFACE,
 RING,
 USERDEFINED,
 NOTDEFINED);
END_TYPE;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcElementAssembly IfcElementAssemblyType

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