LinearReferencing Schema
Alias: lr
Version: 2.0.3
Base schema for Linear Referencing.
Contains the core classes enabling the specification of positions along linear objects.
The following class-diagram depicts the core mix-ins in the LinearReferencing schema:
The following class-diagram depicts the core aspect classes in the LinearReferencing schema:
Table of contents
- Entity Classes
- Mixins
- Struct Classes
- Relationship Classes
- ILinearElementProvidedBySource
- ILinearLocationLocatesElement
- ILinearlyLocatedAlongILinearElement
- ILinearlyLocatedAttributesElement
- ILinearlyLocatedOwnsAtLocations
- ILinearlyLocatedOwnsFromToLocations
- IReferentReferencesElement
- LinearlyReferencedAtPositionRefersToReferent
- LinearlyReferencedFromPositionRefersToReferent
- LinearlyReferencedToPositionRefersToReferent
- LocatedElementOwnsLocatingElements
- Kind Of Quantities
Entity Classes
LinearLocation (Linear Location) Sealed EntityClass 
ILinearLocationElement-implementation attaching Linear Referencing Location to a bis:Element not inherently Linearly-Referenced.
Base Class: LinearReferencing:LinearLocationElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation |
LinearLocationElement (Linear Location Element) Abstract EntityClass
Base class for ILinearLocationElement-implementations that are subclasses of bis:SpatialLocationElement.
Base Class: BisCore:SpatialLocationElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation |
LinearLocationRecord (Linear Location Record) Sealed EntityClass
ILinearLocationElement-implementation attaching Linear Referencing Location to a bis:Element not inherently Linearly-Referenced.
Base Class: LinearReferencing:LinearLocationRecordElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
LinearLocationRecordElement (Linear Location Record Element) Abstract EntityClass
Base class for ILinearLocationElement-implementations that are subclasses of bis:InformationRecordElement.
Base Class: BisCore:InformationRecordElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
LinearPhysicalElement (Linearly-Located Physical Element) Abstract EntityClass
Base class for ILinearLocationElement-implementations that are subclasses of bis:PhysicalElement.
Base Class: BisCore:PhysicalElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation | |
| PhysicalMaterial | Indicates the bis:PhysicalMaterial of which the bis:PhysicalElement is made. | navigation |
LinearlyLocatedAttribution (Linearly-Located Spatial Attribution) Abstract EntityClass
Base class for ILinearlyLocatedAttribution-implementations that are Spatial Location Elements.
Base Class: BisCore:SpatialLocationElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation | |
| AttributedElement | Element being attributed. | navigation |
Instances of subclasses of LinearlyLocatedAttribution must be contained in either PhysicalModels or SpatialLocationModels.
LinearlyReferencedAtLocation (Linearly-Referenced At-Location) Sealed EntityClass
Concrete multi-aspect class carrying 'at' linearly-referenced positions along a Linear-Element.
Base Class: LinearReferencing:LinearlyReferencedLocation
Equivalent to IfcPointByDistanceExpression.
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| AtPosition | struct | ||
| FromReferent | navigation |
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Element | The bis:Element that owns this bis:ElementMultiAspect. | navigation |
LinearlyReferencedFromToLocation (Linearly-Referenced From/To-Location) Sealed EntityClass
Concrete multi-aspect class carrying 'from/to' linearly-referenced positions along a Linear-Element.
Base Class: LinearReferencing:LinearlyReferencedLocation
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| FromPosition | struct | ||
| FromPositionFromReferent | navigation | ||
| ToPosition | struct | ||
| ToPositionFromReferent | navigation |
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Element | The bis:Element that owns this bis:ElementMultiAspect. | navigation |
LinearlyReferencedLocation (Linearly-Referenced Location) Abstract EntityClass
Base class for multi-aspects carrying linearly-referenced locations.
Base Class: BisCore:ElementMultiAspect
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Element | The bis:Element that owns this bis:ElementMultiAspect. | navigation |
Referent (Referent) Sealed EntityClass
IReferent-implementation turning any bis:Element not inherently Linearly-Referenced into a Referent for Linear-Referencing purposes.
Base Class: LinearReferencing:ReferentElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation | |
| ReferencedElement | navigation |
ReferentElement (Referent Element) Abstract EntityClass
Base class for IReferent-implementations that are Spatial Location Elements.
Base Class: BisCore:SpatialLocationElement
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeValue | The CodeValue property stores a human-readable real-world identifier of the Entity represented by the bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | string | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Category | The bis:SpatialCategory used to categorize this bis:GeometricElement3d | navigation | |
| InSpatialIndex | If true, this element will have an entry in the Spatial Index. | boolean | |
| Origin | The placement origin of this bis:Element. | point3d | |
| Yaw | The Yaw angle (in degrees) of the orientation of this bis:Element. | double | |
| Pitch | The Pitch angle (in degrees) of the orientation of this bis:Element. | double | |
| Roll | The Roll angle (in degrees) of the orientation of this bis:Element. | double | |
| BBoxLow | The 'low' point of the element-aligned bounding box of this bis:Element. | point3d | |
| BBoxHigh | The 'high' point of the element-aligned bounding box of this bis:Element. | point3d | |
| GeometryStream | Binary stream used to persist the geometry of this bis:Element. | binary | GeometryStream |
| TypeDefinition | Points to an instance of some specialization of TypeDefinition, which holds property values that vary per-type rather than per-instance of this Element. | navigation | |
| ReferencedElement | navigation |
Mixins
ILinearElement (Linear-Element) Abstract Mixin
Mix-in to be supported by Element-subclasses meant to play the role of Linear-Elements.
Applies To: Element
A Linear-Element is a one-dimensional object that serves as the axis along which measurements are made.
Equivalent to IfcLinearPositioningElement.
Properties
| Name | Description | Label | Category | Read Only | Priority |
|---|---|---|---|---|---|
| StartValue | Distance along value at the start of the Linear-Element, measured from an absolute zero. | Start Value | false | 0 | |
| LengthValue | Length measure value for the Linear-Element. | Length | false | 0 | |
| LinearElementSource | Source element providing this Linear-Element. | Source | false | 0 |
ILinearElementSource (Linear-Element Source) Abstract Mixin
Mix-in to be supported by Element-subclasses meant to provide Linear-Elements.
Applies To: Element
ILinearLocationElement (Linear-Location Element) Abstract Mixin
Mix-in to be supported by Element-subclasses located along a Linear-Element provided by a Linear-Element-Source.
Base Class: LinearReferencing:ILinearlyLocated
Applies To: Element
ILinearlyLocated (Linearly-Located Element) Abstract Mixin
Base mix-in for Elements to be linearly-referenced along Linear-Elements.
Applies To: Element
Implementations of the ILinearlyLocated mix-in are equivalent to IfcLinearPlacement.
ILinearlyLocatedAttribution (Linearly-Located Attribution) Abstract Mixin
Mix-in to be supported by Element-subclasses representing properties whose value is located along a Linear-Element and only applies to a portion of a Linear-Element-Source.
Base Class: LinearReferencing:ILinearlyLocated
Applies To: Element
Properties
| Name | Description | Label | Category | Read Only | Priority |
|---|---|---|---|---|---|
| AttributedElement | Element being attributed. | Attributed Element | false | 0 |
Inherited properties
| Name | Description | Type | Extended Type |
|---|
IReferent Abstract Mixin
Mix-in to be supported by Element-subclasses that can play the role of a Referent (known location along a Linear-Element).
Base Class: LinearReferencing:ILinearlyLocated
Applies To: Element
Equivalent to IfcReferent. Note that IfcReferent is an IfcLinearPositioningElement, thus references to it use the same IfcRelPositions.RelatingPositioningElement than references to IfcLinearPositioningElement. On the other hand, a lr:IReferent is referenced from either a lr:LinearlyReferencedAtLocation or lr:LinearlyReferencedFromToLocation multi-aspects via their corresponding navigation properties.
Properties
| Name | Description | Label | Category | Read Only | Priority |
|---|---|---|---|---|---|
| ReferencedElement | Referenced Element | false | 0 |
Inherited properties
| Name | Description | Type | Extended Type |
|---|
DistanceExpression StructClass
Core structure carrying linearly-referenced information.
The DistanceExpression structure allows measurements to be captured in absolute terms (with respect to the start of the Linear-Element) or relative to an lr:IReferent, or both.
The DistanceExpression structure is equivalent to IfcPointByDistanceExpression.
The LateralOffsetFromILinearElement and VerticalOffsetFromILinearElement values are assumed to be measured perpendicularly from the tangent on the Linear-Element calculated at the location indicated by DistanceAlongFromStart.
Values in the LateralOffsetFromILinearElement are assumed to be positive for lateral offsets to the right of the Linear-Element and negative for lateral offsets to its left, with respect to its direction from start.
Values in the VerticalOffsetFromILinearElement are assumed to be positive for vertical offsets above the Linear-Element and negative for vertical offsets below it.
These assumptions are equivalent to a IfcAxis2PlacementLinear with its Axis and RefDirection attributes describing a perpendicular to the tangent at the linear location of interest along the BasisCurve.
Properties
| Name | Description | Label | Category | Read Only | Priority |
|---|---|---|---|---|---|
| DistanceAlongFromStart | Distance-along | false | 0 | ||
| LateralOffsetFromILinearElement | Lateral offset | false | 0 | ||
| VerticalOffsetFromILinearElement | Vertical offset | false | 0 | ||
| DistanceAlongFromReferent | Distance-along from Referent | false | 0 |
Relationship Classes
ILinearElementProvidedBySource RelationshipClass
Relationship associating Linear-Elements with the elements they came from.
Strength: Referencing
Strength Direction: Forward
Source
Target
ILinearLocationLocatesElement RelationshipClass
Relationship indicating the bis:Element being linearly-located by a concrete instance mixing-in ILinearLocationElement.
Base Class: BisCore:ElementRefersToElements
Strength: Referencing
Strength Direction: Forward
Equivalent to IfcLinearPlacement.PlacesObject.
Source
Target
ILinearlyLocatedAlongILinearElement RelationshipClass
Relationship indicating the Linear-Element along which concrete instances mixing-in ILinearlyLocated are located.
Base Class: BisCore:ElementRefersToElements
Strength: Referencing
Strength Direction: Forward
Equivalent to IfcProduct.PositionedRelativeTo referencing an IfcLinearPositioningElement via IfcRelPositions.RelatingPositioningElement.
Note that IFC further requires an individual reference to the appropriate IfcCurve from each IfcPointByDistanceExpression via its BasisCurve attribute. In contrast, the LinearReferencing BIS schema considers such curves an implementation detail behind a concrete lr:ILinearElement realization in a particular domain, and therefore, it does not capture it.
Source
Target
ILinearlyLocatedAttributesElement RelationshipClass
Relationship indicating the bis:Element being attributed by a concrete instance mixing-in ILinearlyLocatedAttribution.
Strength: Referencing
Strength Direction: Forward
Source
Target
ILinearlyLocatedOwnsAtLocations RelationshipClass
Relationship documenting multi-aspect ownership by concrete instances of ILinearlyLocated.
Base Class: BisCore:ElementOwnsMultiAspects
Strength: Embedding
Strength Direction: Forward
Source
Target
ILinearlyLocatedOwnsFromToLocations RelationshipClass
Relationship documenting multi-aspect ownership by concrete instances of ILinearlyLocated.
Base Class: BisCore:ElementOwnsMultiAspects
Strength: Embedding
Strength Direction: Forward
Source
Target
IReferentReferencesElement RelationshipClass
Relationship indicating the bis:Element being used as Referent for Linear Referencing purposes.
Strength: Referencing
Strength Direction: Forward
Source
Target
LinearlyReferencedAtPositionRefersToReferent RelationshipClass
Relationship indicating the referent used by a particular linearly-referenced At position.
Strength: Referencing
Strength Direction: Forward
Source
Target
LinearlyReferencedFromPositionRefersToReferent RelationshipClass
Relationship indicating the referent used by a particular linearly-referenced From position.
Strength: Referencing
Strength Direction: Forward
Source
Target
LinearlyReferencedToPositionRefersToReferent RelationshipClass
Relationship indicating the referent used by a particular linearly-referenced To position.
Strength: Referencing
Strength Direction: Forward
Source
Target
LocatedElementOwnsLocatingElements RelationshipClass
Relates a bis:Element that is not inherently linearly-located to child lr:ILinearLocationElements carrying Linear Referencing Locations for it.
Base Class: BisCore:ElementOwnsChildElements
Strength: Embedding
Strength Direction: Forward
Source
Target
Kind Of Quantities
LENGTH (Linear Referencing Length) KindOfQuantity
Relative Error: 0.0001
Persistence Unit: M
Presentation Formats
- DefaultRealU(2) [ M ]
- DefaultRealU(2) [ FT ]
Last Updated: 05 October, 2023