IfcSubContractResource

Natural language names
Unterauftragnehmer - Ressource
Sub Contract Resource
Ressource de sous-traitance
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcSubContractResource
      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 SubContractor to BaseQuantity.
Type changed from IfcActorSelect to IfcPhysicalQuantity.
      PredefinedTypeXXMODIFIEDName changed from JobDescription to PredefinedType.
Type changed from IfcText to IfcSubContractResourceTypeEnum.
Semantic definitions at the entity
Entity definition

IfcSubContractResource is a construction resource needed in a construction process that represents a sub-contractor.

HISTORY  New entity in IFC2.0.
IFC4 CHANGE  The attribute SubContractor has been deleted; use IfcRelAssignsToResource to assign an IfcActor to fulfill the role as the subcontractor. The attribute JobDescription has been deleted; use LongDescription to describe the job.

An IfcSubContractResource can be used in cost estimating and work planning with or without specifying the subcontractor and contract agreement.

The purpose of an IfcSubContractResource is to indicate work of a particular type that is that is to be engaged through the use of a sub-contract. Its aim is to identify the description of the sub-contract work required. It can be used to identify the generic type of sub-contract 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 an 'insulation specialist'.

A subcontract resource may be described at various stages and levels of detail through its assignments:

Attribute definitions
#AttributeTypeCardinalityDescription G
11PredefinedTypeIfcSubContractResourceTypeEnum? Defines types of subcontract resources.
IFC4 New attribute.
X
Inherited definitions from supertypes
Entity inheritance IfcConstructionResource IfcResource IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? 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.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? 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? 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).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
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).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
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.
IFC4 CHANGE  The inverse attribute datatype has been added.
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).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
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).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
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? 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.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
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.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
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.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
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.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcResource
6IdentificationIfcIdentifier? An identifying designation given to a resource. It is the identifier at the occurrence level.
IFC4 CHANGE Attribute promoted from subtype IfcConstructionResource.
X
7LongDescriptionIfcText? A detailed description of the resource (e.g. the skillset for a labor resource).
IFC4 CHANGE  The attribute LongDescription is added replacing the ResourceGroup attribute at subtype IfcConstructionResource.
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? 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.
IFC4 CHANGE  New attribute.
X
9BaseCostsIfcAppliedValue? L[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).
IFC4 CHANGE  New attribute.
X
10BaseQuantityIfcPhysicalQuantity? 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.
IFC4 CHANGE  New attribute.
X
IfcSubContractResource
11PredefinedTypeIfcSubContractResourceTypeEnum? Defines types of subcontract resources.
IFC4 New attribute.
X
Definitions applying to General Usage

 Instance diagram

Concept usage

Object Typing

The Object Typing concept template applies to this entity as shown in Table 309.

HasTypeRelatingType
IfcConstructionResourceType

Table 309 — IfcSubContractResource Object Typing



Resource Assignment

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

TypeDescription
IfcActorIndicates a specific organization to be considered to fulfill the resource or invited to bid on the resource.

Table 310 — IfcSubContractResource Resource Assignment



mvdXML Specification
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="af30816c-1e11-47ec-907a-905435dc95ba" name="IfcSubContractResource" status="sample" applicableRootEntity="IfcSubContractResource">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="7c3c4397-6add-486e-807f-c10fc597e495" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="ec664f16-ca3a-4841-bcb2-4666d7de7e34" name="Object Typing" status="sample" override="false">
      <Template ref="35a2e10e-20df-40f4-ab2f-dacf0a6744f4" />
    </Concept>
    <Concept uuid="c1e7b6b9-deb1-4205-8d41-9af61ae873e9" name="Resource Assignment" status="sample" override="false">
      <Template ref="26529b88-e45d-4818-a1ce-02ba12901b7e" />
      <TemplateRules operator="and">
        <TemplateRule Description="Indicates a specific organization to be considered to fulfill the resource or invited to bid on the resource." Parameters="Type[Type]='IfcActor'" />
      </TemplateRules>
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcConstructionResource
DocumentDocument AssociationGeneral Usage
ConstraintConstraint AssociationGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
NestingObject NestingGeneral Usage
IfcSubContractResource
Object TypingObject TypingGeneral Usage
Resource AssignmentResource AssignmentGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcSubContractResource" type="ifc:IfcSubContractResource" substitutionGroup="ifc:IfcConstructionResource" nillable="true"/>
 <xs:complexType name="IfcSubContractResource">
  <xs:complexContent>
   <xs:extension base="ifc:IfcConstructionResource">
    <xs:attribute name="PredefinedType" type="ifc:IfcSubContractResourceTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcSubContractResource
 SUBTYPE OF (IfcConstructionResource);
  PredefinedType : OPTIONAL IfcSubContractResourceTypeEnum;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcSubContractResourceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcSubContractResourceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Link to this page  Link to this page