IfcLaborResource

Natural language names
deArbeit - Ressource
enLabor Resource
frRessource en main d'œuvre
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcLaborResource
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      IdentificationXMODIFIEDName changed from ResourceIdentifier to Identification.
      LongDescriptionMODIFIEDName changed from ResourceGroup to LongDescription.
Type changed from IfcLabel to IfcText.
      UsageXXMODIFIEDName changed from ResourceConsumption to Usage.
Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
      BaseCostsXXMODIFIEDName changed from BaseQuantity to BaseCosts.
Type changed from IfcMeasureWithUnit to IfcAppliedValue.
Aggregation changed from NONE to LIST.
      BaseQuantityXXMODIFIEDName changed from SkillSet to BaseQuantity.
Type changed from IfcText to IfcPhysicalQuantity.
      PredefinedTypeADDED
Semantic definitions at the entity
Entity definition

An IfcLaborResource is used in construction with particular skills or crafts required to perform certain types of construction or management related work.

HISTORY  New entity in IFC2.0.
IFC4 CHANGE  The attribute Skillset has been deleted; use LongDescription to describe the skillset.

The purpose of an IfcLaborResource is to identify a skillset that may be required or used. The skillset identified may be (for instance) charge-hand, foreman, labourer, plumbers mate etc. and provides a designation of a particular level of skill. It can be used to identify the generic type of labour resource that is required for a purpose without having to be specific about the actor (person or organization) providing the resource occurrence. It may be particularly useful when creating an overall plan for a process or processes. For instance, within maintenance or work planning there may be a known task that needs to be done which is planned to require a 'chargehand pipe fitter'. There may be several such labour resources available and so the need to identify which will be used is not necessary at the planning stage.

At a later stage, individual actors can be determined for the labour resources. This is achieved through specifying the actor through IfcActor. The actor is then identified as the labour resource occurrence through the IfcRelAssignsToResource.RelatedResource attribute. The IfcLaborResource provides the IfcRelAssignsToResource.RelatingResource attribute.

Attribute definitions
#AttributeTypeCardinalityDescription C
11PredefinedTypeIfcLaborResourceTypeEnum[0:1] Defines types of labour resources. X
Inherited definitions from supertypes
Entity inheritance IfcConstructionResource IfcResource IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcRoot
1GlobalIdIfcGloballyUniqueId[1:1] Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory[0:1] Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
X
3NameIfcLabel[0:1] Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText[0:1] Optional description, provided for exchanging informative comments.X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects		S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups.X
NestsIfcRelNests
@RelatedObjects		S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only). X
IsNestedByIfcRelNests
@RelatingObject		S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types). X
HasContextIfcRelDeclares
@RelatedDefinitions		S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object. X
IsDecomposedByIfcRelAggregates
@RelatingObject		S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts). X
DecomposesIfcRelAggregates
@RelatedObjects		S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only). X
HasAssociationsIfcRelAssociates
@RelatedObjects		S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification.X
IfcObject
5ObjectTypeIfcLabel[0:1] The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects		S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes. X
DeclaresIfcRelDefinesByObject
@RelatingObject		S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes. X
IsTypedByIfcRelDefinesByType
@RelatedObjects		S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type. X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects		S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object. X
IfcResource
6IdentificationIfcIdentifier[0:1] An identifying designation given to a resource. It is the identifier at the occurrence level. X
7LongDescriptionIfcText[0:1] A detailed description of the resource (e.g. the skillset for a labor resource). X
ResourceOfIfcRelAssignsToResource
@RelatingResource		S[0:?]Set of relationships to other objects, e.g. products, processes, controls, resources or actors, for which this resource object is a resource.X
IfcConstructionResource
8UsageIfcResourceTime[0:1] Indicates the work, usage, and times scheduled and completed. Some attributes on this object may have associated constraints or time series; see documentation of IfcResourceTime for specific usage. If the resource is nested, then certain values may be calculated based on the component resources as indicated at IfcResourceTime. X
9BaseCostsIfcAppliedValueL[1:?] Indicates the unit costs for which accrued amounts should be calculated. Such unit costs may be split into Name designations (for example, 'Standard', 'Overtime'), and may contain a hierarchy of cost values that apply at different dates (using IfcCostValue.ApplicableDate and IfcCostValue.FixedUntilDate). X
10BaseQuantityIfcPhysicalQuantity[0:1] Identifies the base quantity consumed of the resource relative to assignments. For crew, labour, subcontract, and equipment resources, this refers to IfcQuantityTime. For material resources, this refers to IfcQuantityVolume. For product resources, this refers to IfcQuantityCount. X
IfcLaborResource
11PredefinedTypeIfcLaborResourceTypeEnum[0:1] Defines types of labour resources. X
Definitions applying to Common Use Definitions

 Instance diagram

Concept usage

Object Typing

The Object Typing concept applies to this entity as shown in Table 306.

Type
IfcLaborResourceType
IfcConstructionResourceType

Table 306 — IfcLaborResource Object Typing



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 307.

Name
Qto_LaborResourceBaseQuantities

Table 307 — IfcLaborResource Quantity Sets



Resource Assignment

The Resource Assignment concept applies to this entity as shown in Table 308.

TypeDescription
IfcActorIndicates specific people manifesting the resource such as laborers.

Table 308 — IfcLaborResource Resource Assignment



Resource Cost

The Resource Cost concept applies to this entity as shown in Table 309.

CostTypeCostNameValueTypeDescription
IfcCostValueStandardIfcMonetaryMeasureWages incurred for work during standard hours.
IfcCostValueOvertimeIfcMonetaryMeasureWages incurred for work during overtime hours.

Table 309 — IfcLaborResource Resource Cost



Resource Quantity

The Resource Quantity concept applies to this entity as shown in Table 310.

QuantityTypeQuantityNameDescription
IfcQuantityTimeLaborQuantity of labor, typically per hour.

Table 310 — IfcLaborResource Resource Quantity



Concept inheritance

#ConceptModel View
IfcRoot
Software IdentityCommon Use Definitions
Revision ControlCommon Use Definitions
IfcObject
Object Occurrence Predefined TypeCommon Use Definitions
IfcConstructionResource
Document AssociationCommon Use Definitions
Constraint AssociationCommon Use Definitions
Property Sets for ObjectsCommon Use Definitions
Object NestingCommon Use Definitions
IfcLaborResource
Object TypingCommon Use Definitions
Quantity SetsCommon Use Definitions
Resource AssignmentCommon Use Definitions
Resource CostCommon Use Definitions
Resource QuantityCommon Use Definitions
Formal representations
XSD Specification
 <xs:element name="IfcLaborResource" type="ifc:IfcLaborResource" substitutionGroup="ifc:IfcConstructionResource" nillable="true"/>
 <xs:complexType name="IfcLaborResource">
  <xs:complexContent>
   <xs:extension base="ifc:IfcConstructionResource">
    <xs:attribute name="PredefinedType" type="ifc:IfcLaborResourceTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcLaborResource
 SUBTYPE OF (IfcConstructionResource);
  PredefinedType : OPTIONAL IfcLaborResourceTypeEnum;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcLaborResourceTypeEnum.USERDEFINED) OR ((PredefinedType = IfcLaborResourceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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