#### 7.2.3.7 IfcCableSegment

| Segment de câble
| Kabelsegment

A cable segment is a flow segment used to carry electrical power, data, or telecommunications signals.

A cable segment is used to typically join two sections of an electrical network or a network of components carrying the electrical service.

> HISTORY New entity in IFC4

## Electrical System Design

The following concepts are inherited at supertypes:

- IfcDistributionElement: Footprint Geometry

Instance diagram

Identity

The Identity concept applies to this entity.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  | R | R |  |  | R | R | R
Export |  |  |  |  |  |  | R | R |  |  | R | R | R

Object Typing

The Object Typing concept applies to this entity as shown in Table 75.

Type
IfcCableSegmentType
IfcDistributionElementType
Table 75 — IfcCableSegment Object Typing

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  | R
Export |  |  |  |  |  |  |  |  |  |  |  |  | R

Properties for Occurrences

The Properties for Occurrences concept applies to this entity as shown in Table 76.

PredefinedType | Name
--- | ---
BUSBARSEGMENT | Pset_CableSegmentTypeBusBarSegment
CABLESEGMENT | Pset_CableSegmentTypeCableSegment
| Pset_CableSegmentTypeCommon
CONDUCTORSEGMENT | Pset_CableSegmentTypeConductorSegment
CORESEGMENT | Pset_CableSegmentTypeCoreSegment
| Pset_CableSegmentOccurrence
| Pset_ElectricalDeviceCommon
Table 76 — IfcCableSegment Properties for Occurrences

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  | R |  |  |  |  | R
Export |  |  |  |  |  |  |  | R |  |  |  |  | R

Material Profile Set Usage

The Material Profile Set Usage concept applies to this entity as shown in Table 77.

Name | Description
--- | ---
Conductor | Material from which the conductors are constructed, such as Aluminium or Copper.
Insulation | The material from which the insulation is constructed such as PVC, PEX, or EPR.
Screen | The material from which the screen that covers the sheath is constructed (mantel) such as Aluminium, Copper, Steel, or Lead.
Sheath | The outer sheathing of the cable which may be color-coded.
Table 77 — IfcCableSegment Material Profile Set Usage

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  |  |  |  |  |  |  |
Export |  |  |  |  | - |  |  |  |  |  |  |  |

Spatial Containment

The Spatial Containment concept applies to this entity as shown in Table 78.

Structure | Description
--- | ---
IfcSite | Underground or overground cable carriers are contained within the site.
IfcBuildingStorey | Cable carriers that span multiple spaces are contained within a building storey. If the cable carrier segment spans multiple storeys, it is placed within the storey containing the placement origin, corresponding with the axis origin.
Table 78 — IfcCableSegment Spatial Containment

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  |  | R |  |  |  |  | R
Export |  |  |  |  | - |  |  | R |  |  |  |  | R

Placement

The Placement concept applies to this entity as shown in Table 79.

Type
IfcLocalPlacement
Table 79 — IfcCableSegment Placement

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  |  | R |  |  | R |  | R
Export |  |  |  |  | - |  |  | R |  |  | R |  | R

Ports

The Ports concept applies to this entity as shown in Table 80.

PredefinedType | Name | Flow | Type
--- | --- | --- | ---
| Head | SINK | ELECTRICAL
| Tail | SOURCE | ELECTRICAL
Table 80 — IfcCableSegment Ports

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  |  |  |  |  |  |  |
Export |  |  |  |  | - |  |  | R |  |  |  |  | R

Axis Geometry

The Axis Geometry concept applies to this entity.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  | - | R |  |  | R | R | R
Export |  |  |  |  | - |  | - | R |  |  | R | R | R

Body Geometry

The Body Geometry concept applies to this entity as shown in Table 81.

RepresentationType | Geometry | Description
--- | --- | ---
Brep | IfcFacetedBrep | All fixtures (all non distribution flow elements, i.e. everything which is not a duct, a pipe, a cable, or a cable carrier) should be defined by an b-rep geometry. This includes also the complex flow fitting elements (e.g. Y branch or T branch) or distribution flow elements with size changes (e.g. reducer).
SurfaceModel | IfcFaceBasedSurfaceModel | If the geometric model consistency of a b-rep shape representation can not be guaranteed (arcwise connected volume bounded by faces, each being connected, oriented, finite, closed 2-manifold), a surface representation based on open shells should be used.
SweptSolid | IfcExtrudedAreaSolid | All "simple" distribution flow elements (general ducts and pipes) are defined by sweep geometry.
SectionedSpine | IfcSectionedSpine | If only the analytical shape is required for which the exact interpolation between the cross sections is not required, a sectioned spine can be used.
CSG | IfcCsgSolid |
Tessellation | IfcTriangulatedFaceSet |
MappedRepresentation | IfcMappedItem | All occurrences of IfcDistributionElement (and its subtypes) should (whenever possible) share a representation map established by the assigned type. The geometric representation of the occurrence is then an IfcMappedItem.
Table 81 — IfcCableSegment Body Geometry

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  | - |  |  |  |  |  | R | R | R
Export |  |  |  |  | - |  |  |  |  |  | R | R | R

Classification

The Classification concept applies to this entity.

Exchange |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Import |  |  |  |  |  |  |  |  |  |  |  |  | R
Export |  |  |  |  |  |  |  |  |  |  |  |  | R

XSD Specification:

<xs:element name="IfcCableSegment" type="ifc:IfcCableSegment" substitutionGroup="ifc:IfcFlowSegment" nillable="true"/>
<xs:complexType name="IfcCableSegment">
<xs:complexContent>
<xs:extension base="ifc:IfcFlowSegment"/>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcCableSegment

| SUBTYPE OF (IfcFlowSegment);

PredefinedType | : | OPTIONAL IfcStrippedOptional;

| WHERE

CorrectPredefinedType | : | NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcCableSegmentTypeEnum.USERDEFINED) OR ((PredefinedType = IfcCableSegmentTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned | : | (SIZEOF(IsTypedBy) = 0) OR ('IFCELECTRICALDOMAIN.IFCCABLESEGMENTTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));

END_ENTITY;

Attribute Definitions:

PredefinedType | : | Identifies the predefined types of cable segment from which the type required may be set.

Formal Propositions:

CorrectPredefinedType | : | Either the PredefinedType attribute is unset (e.g. because an IfcCableSegmentType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned | : | Either there is no cable segment type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcCableSegmentType.

Inheritance Graph:

ENTITY IfcCableSegment

| ENTITY IfcRoot

GlobalId | : | IfcGloballyUniqueId;
OwnerHistory | : | OPTIONAL IfcOwnerHistory;
Name | : | OPTIONAL IfcLabel;
Description | : | OPTIONAL IfcText;

| ENTITY IfcObjectDefinition

| INVERSE

HasAssignments | : | SET OF IfcRelAssigns FOR RelatedObjects;
Nests | : | SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy | : | SET OF IfcRelNests FOR RelatingObject;
HasContext | : | SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy | : | SET OF IfcRelAggregates FOR RelatingObject;
Decomposes | : | SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations | : | SET OF IfcRelAssociates FOR RelatedObjects;

| ENTITY IfcObject

ObjectType | : | OPTIONAL IfcStrippedOptional;

| INVERSE

IsDeclaredBy | : | SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares | : | SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy | : | SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy | : | SET OF IfcRelDefinesByProperties FOR RelatedObjects;

| ENTITY IfcProduct

ObjectPlacement | : | OPTIONAL IfcObjectPlacement;
Representation | : | OPTIONAL IfcProductRepresentation;

| INVERSE

ReferencedBy | : | SET OF IfcRelAssignsToProduct FOR RelatingProduct;

| ENTITY IfcElement

Tag | : | OPTIONAL IfcStrippedOptional;

| INVERSE

IsInterferedByElements | : | SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements | : | SET OF IfcRelInterferesElements FOR RelatingElement;
ContainedInStructure | : | SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

| ENTITY IfcDistributionElement

| INVERSE

| ENTITY IfcDistributionFlowElement

| INVERSE

| ENTITY IfcFlowSegment

| ENTITY IfcCableSegment

PredefinedType | : | OPTIONAL IfcStrippedOptional;

END_ENTITY;

Link to this page