Earthwork Schema
Alias: ew
Version: 1.0.0
Base schema for the Earthwork domain.
Contains the classes modeling earthwork activities in BIS. Earthwork involves the work of excavating or building embankments, moving and/or processing of massive quantities of soil or unformed rock. It is done to reconfigure the topography of a site to achieve the design levels.
Table of contents
Entity Classes
Cut (Cut) EntityClass
A bis:PhysicalElement modeling the volume of material to be removed from existing terrain or road structure by excavation or other means.
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 |
The material excavated, modeled by Cut
s, can later be used as fill or discarded as waste. The Earthwork schema does not aim to model such processes, however. A Cut
instance can override the Physical Material to be removed specified by its corresponding CutType
via its PhysicalMaterial
property.
Cut
s shall have their Volume stored in their GeometryStream
as a Polyface.
Cut
s must be contained in PhysicalModel
s. Instances of Cut
, by default, shall use the Domain-ranked ew:Volume
category.
Equivalent to IfcEarthworksCut with the main difference that IFC's equivalent does not model the material excavated, only the resulting void from modification of existing terrain.
CutType (Cut Type) EntityClass
Defines a shared set of properties and classification (the 'type') that can be associated with a ew:Cut instance.
Base Class: BisCore:PhysicalType
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 |
IsPrivate | If true, this bis:DefinitionElement should not be displayed in the GUI. | boolean | |
Recipe | navigation | ||
PhysicalMaterial | Indicates the bis:PhysicalMaterial of which bis:PhysicalElements of the given bis:PhysicalType are made. | navigation |
Instances of CutType
provide an additional classification that can be applied to Cut
s. Examples include Excavation, Trench or Dredging. An instance of CutType
can optionally specify a single Physical Material to be removed via its PhysicalMaterial
property.
Equivalent to IfcEarthworksCutTypeEnum.
Fill (Fill) EntityClass
A bis:PhysicalElement created by earthwork activities to build subgrade or to raise the level of the ground in general.
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 |
Examples of Fill
include subgrade or a parts of a structure above it (such as “soft” courses in pavement or ballast). Usually formed by spreading and compacting construction materials such as sand and gravel.
Fill
s shall have their Volume stored in their GeometryStream
as a Polyface. Further classification of Fill
instances can be achieved via instances of FillType
. A Fill
instance can override the Physical Material specified by its corresponding FillType
via its PhysicalMaterial
property.
Fill
s must be contained in PhysicalModel
s. Instances of Fill
, by default, shall use the Domain-ranked ew:Volume
category.
Equivalent to IfcEarthworksFill.
FillType (Fill Type) EntityClass
Defines a shared set of properties and classification (the 'type') that can be associated with a ew:Fill instance.
Base Class: BisCore:PhysicalType
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 |
IsPrivate | If true, this bis:DefinitionElement should not be displayed in the GUI. | boolean | |
Recipe | navigation | ||
PhysicalMaterial | Indicates the bis:PhysicalMaterial of which bis:PhysicalElements of the given bis:PhysicalType are made. | navigation |
Instances of FillType
provide an additional classification that can be applied to Fill
s. Examples include Embankment, Slope Fill or Back Fill. An instance of FillType
can optionally specify a single Physical Material via its PhysicalMaterial
property.
Equivalent to IfcEarthworksFillTypeEnum.
SurfaceGrade (Surface Grade) EntityClass
A bis:PhysicalElement capturing the designed grade of ground typically after introducing modifications to the existing terrain.
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 |
SurfaceGrade
s shall have their Surface stored in their GeometryStream
as a Polyface. A SurfaceGrade
instance can override the Physical Material specified by its corresponding SurfaceGradeType
via its PhysicalMaterial
property.
SurfaceGrade
s must be contained in PhysicalModel
s. Instances of SurfaceGrade
, by default, shall use the Domain-ranked ew:Grading
category.
SurfaceGradeType (Surface Grade Type) EntityClass
Defines a shared set of properties and classification (the 'type') that can be associated with a ew:SurfaceGrade instance.
Base Class: BisCore:PhysicalType
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 |
IsPrivate | If true, this bis:DefinitionElement should not be displayed in the GUI. | boolean | |
Recipe | navigation | ||
PhysicalMaterial | Indicates the bis:PhysicalMaterial of which bis:PhysicalElements of the given bis:PhysicalType are made. | navigation |
Instances of SurfaceGradeType
provide an additional classification that can be applied to SurfaceGrade
s. An instance of SurfaceGradeType
can optionally specify a single Physical Material via its PhysicalMaterial
property.
Relationship Classes
CutIsOfType RelationshipClass
A type-instance relation; one that indicates that the specific ew:Cut is an instance of the defined ew:CutType.
Base Class: BisCore:PhysicalElementIsOfType
Strength: Referencing
Strength Direction: Forward
Source
Target
FillIsOfType RelationshipClass
A type-instance relation; one that indicates that the specific ew:Fill is an instance of the defined ew:FillType.
Base Class: BisCore:PhysicalElementIsOfType
Strength: Referencing
Strength Direction: Forward
Source
Target
SurfaceGradeIsOfType RelationshipClass
A type-instance relation; one that indicates that the specific ew:SurfaceGrade is an instance of the defined ew:SurfaceGradeType.
Base Class: BisCore:PhysicalElementIsOfType
Strength: Referencing
Strength Direction: Forward
Source
Target
Last Updated: 21 November, 2022