IfcWorkPlan

Natural language names
deArbeitsplan
enWork Plan
frPlanning de travail
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcWorkPlan
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      IdentificationXMODIFIEDName changed from Identifier to Identification.
Instantiation changed to OPTIONAL.
      CreationDateXXMODIFIEDType changed from IfcDateTimeSelect to IfcDateTime.
      DurationXXMODIFIEDType changed from IfcTimeMeasure to IfcDuration.
      TotalFloatXXMODIFIEDType changed from IfcTimeMeasure to IfcDuration.
      StartTimeXXMODIFIEDType changed from IfcDateTimeSelect to IfcDateTime.
      FinishTimeXXMODIFIEDType changed from IfcDateTimeSelect to IfcDateTime.
      PredefinedTypeMODIFIEDName changed from WorkControlType to PredefinedType.
Type changed from IfcWorkControlTypeEnum to IfcWorkPlanTypeEnum.
      UserDefinedControlTypeXDELETED
Semantic definitions at the entity
Entity definition

An IfcWorkPlan represents work plans in a construction or a facilities management project.

HISTORY  New entity in IFC2.0

A work plan contains a set of work schedules for different purposes (including construction and facilities management). Contained work schedules are defined through the IfcRelAggregates relationship. Through inheritance from IfcWorkControl it is also possible to define references to activities (for example, IfcTask) and resources used in the work plan.

A work plan has information such as start date, finish date, total free float, and so on. IfcWorkPlan can also refer to the construction project represented by the single IfcProject instance (please also check the definition of IfcWorkControl).

Figure 133 shows the backbone structure of a work plan that defines (1) contained work schedules through IfcRelAggregates and (2), if not assigned otherwise to contained work schedules, assigned tasks and resources through IfcRelAssignsToControl.

If an assigned IfcTask is a root-level task, such task must be declared on the IfcProject using the IfcRelDeclares relationship.

work plan instantiation diagram

Figure 133 — Work plan relationships

Attribute definitions
#AttributeTypeCardinalityDescription C
14PredefinedTypeIfcWorkPlanTypeEnum[0:1] Identifies the predefined types of a work plan from which the type required may be set.X
Formal Propositions
RuleDescription
CorrectPredefinedTypeThe attribute ObjectType must be asserted when the value of the IfcWorkPlanTypeEnum is set to USERDEFINED.
Inherited definitions from supertypes
Entity inheritance IfcWorkControl IfcControl 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
IfcControl
6IdentificationIfcIdentifier[0:1] An identifying designation given to a control It is the identifier at the occurrence level. X
ControlsIfcRelAssignsToControl
@RelatingControl		S[0:?]Reference to the relationship that associates the control to the object(s) being controlled. X
IfcWorkControl
7CreationDateIfcDateTime[1:1] The date that the plan is created.X
8CreatorsIfcPersonS[1:?] The authors of the work plan.X
9PurposeIfcLabel[0:1] A description of the purpose of the work schedule.X
10DurationIfcDuration[0:1] The total duration of the entire work schedule.X
11TotalFloatIfcDuration[0:1] The total time float of the entire work schedule.X
12StartTimeIfcDateTime[1:1] The start time of the schedule.X
13FinishTimeIfcDateTime[0:1] The finish time of the schedule.X
IfcWorkPlan
14PredefinedTypeIfcWorkPlanTypeEnum[0:1] Identifies the predefined types of a work plan from which the type required may be set.X
Definitions applying to Common Use Definitions

 Instance diagram

Concept usage

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 18.

PredefinedTypeNameProperties
 Pset_WorkControlCommonSingle Value
NameValue
WorkStartTimeIfcTime
WorkFinishTimeIfcTime
WorkDayDurationIfcDuration
WorkWeekDurationIfcDuration
WorkMonthDurationIfcDuration

Table 18 — IfcWorkPlan Property Sets for Objects



Concept inheritance

#ConceptModel View
IfcRoot
Software IdentityCommon Use Definitions
Revision ControlCommon Use Definitions
IfcObject
Object Occurrence Predefined TypeCommon Use Definitions
IfcControl
IfcWorkControl
Control AssignmentCommon Use Definitions
IfcWorkPlan
Property Sets for ObjectsCommon Use Definitions
Formal representations
XSD Specification
 <xs:element name="IfcWorkPlan" type="ifc:IfcWorkPlan" substitutionGroup="ifc:IfcWorkControl" nillable="true"/>
 <xs:complexType name="IfcWorkPlan">
  <xs:complexContent>
   <xs:extension base="ifc:IfcWorkControl">
    <xs:attribute name="PredefinedType" type="ifc:IfcWorkPlanTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcWorkPlan
 SUBTYPE OF (IfcWorkControl);
  PredefinedType : OPTIONAL IfcWorkPlanTypeEnum;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcWorkPlanTypeEnum.USERDEFINED) OR ((PredefinedType = IfcWorkPlanTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcObject.ObjectType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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