IfcPerformanceHistory

Natural language names
Leistungsverlauf
Performance History
Historique de performance
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcPerformanceHistory
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      IdentificationMODIFIEDName changed from LifeCyclePhase to Identification.
Type changed from IfcLabel to IfcIdentifier.
Instantiation changed to OPTIONAL.
      LifeCyclePhaseADDED
      PredefinedTypeADDED
Semantic definitions at the entity
Entity definition

IfcPerformanceHistory is used to document the actual performance of an occurrence instance over time. It includes machine-measured data from building automation systems and human-specified data such as task and resource usage. The data may represent actual conditions, predictions, or simulations.

The realtime data tracked by performance history takes the form of property sets where all properties are based on time series. Unlike design-based data at occurrences and types, performance-driven data is time-sensitive and may change in realtime by some measurement device. Data may be captured at irregular intervals such as when values change beyond established thresholds, or at regular intervals of specified duration.

Declaration use definition

IfcPerformanceHistory may be declared within a project using IfcRelDeclares where RelatingContext refers to the IfcProject and RelatedDefinitions includes the IfcPerformanceHistory. Default units (used for property sets) are indicated by the declaring project. Only top-level objects are declared; nested performance history objects (through IfcRelNests) do not participate in such relationship.

HISTORY  New entity in IFC2x2.
Attribute definitions
#AttributeTypeCardinalityDescription G
7LifeCyclePhaseIfcLabel Describes the applicable building life-cycle phase. Typical values should be DESIGNDEVELOPMENT, SCHEMATICDEVELOPMENT, CONSTRUCTIONDOCUMENT, CONSTRUCTION, ASBUILT, COMMISSIONING, OPERATION, etc. X
8PredefinedTypeIfcPerformanceHistoryTypeEnum? Predefined generic type for a performace history that is specified in an enumeration.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
Inherited definitions from supertypes
Entity inheritance IfcControl 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
IfcControl
6IdentificationIfcIdentifier? An identifying designation given to a control It is the identifier at the occurrence level.
IFC4 CHANGE Attribute unified by promoting from various subtypes of IfcControl.
X
ControlsIfcRelAssignsToControl
@RelatingControl
S[0:?]Reference to the relationship that associates the control to the object(s) being controlled. X
IfcPerformanceHistory
7LifeCyclePhaseIfcLabel Describes the applicable building life-cycle phase. Typical values should be DESIGNDEVELOPMENT, SCHEMATICDEVELOPMENT, CONSTRUCTIONDOCUMENT, CONSTRUCTION, ASBUILT, COMMISSIONING, OPERATION, etc. X
8PredefinedTypeIfcPerformanceHistoryTypeEnum? Predefined generic type for a performace history that is specified in an enumeration.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
Definitions applying to General Usage

 Instance diagram


Concept usage

Property Sets for Performance

The Property Sets for Performance concept applies to this entity.

The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Applicable property sets are defined at assigned entities (primarily IfcDistributionElement subtypes) where IfcPropertySetTemplate.PropertySetType is PSET_PERFORMANCEDRIVEN.

In addition to standard property sets defined within this specification, if the underlying information source provides metadata (specific type information), then custom property sets may capture such data, where corresponding IfcPropertySetTemplate and IfcPropertyTemplate objects may be defined for such information to be accessed by other applications.



Classification

The Classification Association concept applies to this entity.

IfcPerformanceHistory may be classified using IfcRelAssociatesClassification where RelatingClassification refers to an IfcClassificationReference indicating a classification notation. Such classification notation may be used to identify the information such as an address within a building automation system, a work breakdown structure code for tasks, or a cost code for resource allocation.



Aggregation

The Aggregation concept template applies to this entity as shown in Table 8.

Table 8 — IfcPerformanceHistory Aggregation

IfcPerformanceHistory may be decomposed into components using IfcRelNests where RelatingObject refers to the enclosing IfcPerformanceHistory and RelatedObjects contains one or more IfcPerformanceHistory components. Composition indicates breakdown of further detail and may correspond to the hierarchy of objects it represents.



Control Assignment

The Control Assignment concept template applies to this entity as shown in Table 9.

TypeDescription
IfcGroupA system or zone for which time-based system information is provided, such as overall status parameters of a building control system.
IfcProductA building space, physical device, or port for which time-based information is provided, such as a chiller or an analog input within a device.
IfcProcessA process for which time-based information is provided, such as an alarm event being raised and acknowledged, or regular and overtime costs incurred for a task.
IfcResourceA resource for which usage is recorded or planned over time, such as wage rates and number of workers at particular times.

Table 9 — IfcPerformanceHistory Control 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="af4d58e0-738d-4203-9b01-c412e83fb300" name="IfcPerformanceHistory" status="sample" applicableRootEntity="IfcPerformanceHistory">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="c499a7ac-281b-4bb8-9ad9-bb83811f7e44" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="d679c465-499b-4425-b9bf-90e8f803abe1" name="Property Sets for Performance" status="sample" override="false">
      <Template ref="c32cc55b-afc7-439e-b821-e646e1b1dd1a" />
    </Concept>
    <Concept uuid="e27207e7-8f47-49c7-8533-e9d2b82d6d22" name="Classification" status="sample" override="false">
      <Template ref="4a224609-6578-4c75-afcf-8affa86e5ef2" />
    </Concept>
    <Concept uuid="39d4c025-11ff-4a19-85dd-0739ed43ba32" name="Aggregation" status="sample" override="false">
      <Template ref="02eefcc6-b26c-4f20-9c7c-c30ae74eb9a9" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="" />
      </TemplateRules>
    </Concept>
    <Concept uuid="7bf2b0af-920b-4f59-b127-5e646da32323" name="Control Assignment" status="sample" override="false">
      <Template ref="813e73fe-5641-4648-a680-8887cf4359f1" />
      <TemplateRules operator="and">
        <TemplateRule Description="A system or zone for which time-based system information is provided, such as overall status parameters of a building control system." Parameters="Type[Type]='IfcGroup'" />
        <TemplateRule Description="A building space, physical device, or port for which time-based information is provided, such as a chiller or an analog input within a device." Parameters="Type[Type]='IfcProduct'" />
        <TemplateRule Description="A process for which time-based information is provided, such as an alarm event being raised and acknowledged, or regular and overtime costs incurred for a task." Parameters="Type[Type]='IfcProcess'" />
        <TemplateRule Description="A resource for which usage is recorded or planned over time, such as wage rates and number of workers at particular times." Parameters="Type[Type]='IfcResource'" />
      </TemplateRules>
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Object TypingObject TypingGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcPerformanceHistory
Property Sets for PerformanceProperty Sets for PerformanceGeneral Usage
ClassificationClassification AssociationGeneral Usage
AggregationAggregationGeneral Usage
Control AssignmentControl AssignmentGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcPerformanceHistory" type="ifc:IfcPerformanceHistory" substitutionGroup="ifc:IfcControl" nillable="true"/>
 <xs:complexType name="IfcPerformanceHistory">
  <xs:complexContent>
   <xs:extension base="ifc:IfcControl">
    <xs:attribute name="LifeCyclePhase" type="ifc:IfcLabel" use="optional"/>
    <xs:attribute name="PredefinedType" type="ifc:IfcPerformanceHistoryTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcPerformanceHistory
 SUBTYPE OF (IfcControl);
  LifeCyclePhase : IfcLabel;
  PredefinedType : OPTIONAL IfcPerformanceHistoryTypeEnum;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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