IfcDistributionFlowElementType

Natural language names
Komponente der TGA (allgemein) - Typ
Distribution Flow Element Type
Type d'élément de distribution de fluide
Semantic definitions at the entity
Entity definition

The element type IfcDistributionFlowElementType defines a list of commonly shared property set definitions of an element and an optional set of product representations. It is used to define an element specification (the specific product information that is common to all occurrences of that product type).

Distribution flow element types (orthe instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcDistributionFlowElementType are represented by instances of IfcDistributionFlowElement or its subtypes.

HISTORY  New entity in IFC2x2.
IFC4 CHANGE  Ports may now be defined using IfcRelNests to enable definition of ports at type definitions (both forward and backward compatible), provide a logical order, and reduce the number of relationship objects needed. The relationship IfcRelConnectsPortToElement is still supported on occurrence objects, however is now specific to dynamically connected ports.
Inherited definitions from supertypes
Entity inheritance IfcDistributionChamberElementType IfcEnergyConversionDeviceType IfcFlowControllerType IfcFlowFittingType IfcFlowMovingDeviceType IfcFlowSegmentType IfcFlowStorageDeviceType IfcFlowTerminalType IfcFlowTreatmentDeviceType IfcDistributionElementType IfcElementType IfcTypeProduct IfcTypeObject 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
IfcTypeObject
5ApplicableOccurrenceIfcIdentifier? The attribute optionally defines the data type of the occurrence object, to which the assigned type object can relate. If not present, no instruction is given to which occurrence object the type object is applicable. The following conventions are used:
  • The IFC entity name of the applicable occurrence using the IFC naming convention, CamelCase with IFC prefix
  • It can be optionally followed by the predefined type after the separator "/" (forward slash), using uppercase
  • If one type object is applicable to many occurrence objects, then those occurrence object names should be separate by comma "," forming a comma separated string.
EXAMPLE Refering to a furniture as applicable occurrence entity would be expressed as 'IfcFurnishingElement', refering to a brace as applicable entity would be expressed as 'IfcMember/BRACE', refering to a wall and wall standard case would be expressed as 'IfcWall, IfcWallStandardCase'.
X
6HasPropertySetsIfcPropertySetDefinition? S[1:?] Set list of unique property sets, that are associated with the object type and are common to all object occurrences referring to this object type.
IFC2x3 CHANGE  The attribute aggregate type has been changed from LIST to SET.
X
TypesIfcRelDefinesByType
@RelatingType
S[0:1]Reference to the relationship IfcRelDefinedByType and thus to those occurrence objects, which are defined by this type.X
IfcTypeProduct
7RepresentationMapsIfcRepresentationMap? L[1:?] List of unique representation maps. Each representation map describes a block definition of the shape of the product style. By providing more than one representation map, a multi-view block definition can be given.X
8TagIfcLabel? The tag (or label) identifier at the particular type of a product, e.g. the article number (like the EAN). It is the identifier at the specific level.X
ReferencedByIfcRelAssignsToProduct
@RelatingProduct
S[0:?]Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product type.
IFC4 CHANGE  New inverse relationship.
X
IfcElementType
9ElementTypeIfcLabel? 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
IfcDistributionElementType
IfcDistributionFlowElementType
Definitions applying to General Usage

 Instance diagram


Concept usage

Axis Geometry

The Type Axis Geometry concept template applies to this entity as shown in Table 227.

TypeGeometry
Curve3DIfcBoundedCurve

Table 227 — IfcDistributionFlowElementType Type Axis Geometry

This represents the 3D flow path of the item having IfcShapeRepresentation.RepresentationType of 'Curve3D' and containing a single IfcBoundedCurve subtype such as IfcPolyline, IfcTrimmedCurve, or IfcCompositeCurve. For elements containing directional ports (IfcDistributionPort with FlowDirection of SOURCE or SINK), the direction of the curve indicates direction of flow where a SINK port is positioned at the start of the curve and a SOURCE port is positioned at the end of the curve. This representation is most applicable to flow segment types (pipes, ducts, cables), however may be used at other elements to define a primary flow path if applicable.

If an element type is defined parametrically (such as a flow segment type defining common material profile but no particular length or path), then no representations shall be asserted at the type.

NOTE  The product representations are defined as representation maps (at the level of the supertype IfcTypeProduct, which get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.


Clearance Geometry

The Type Clearance Geometry concept template applies to this entity as shown in Table 228.

TypeGeometry
Surface3DIfcSurface

Table 228 — IfcDistributionFlowElementType Type Clearance Geometry

This represents the 3D clearance volume of the item having RepresentationType of 'Surface3D'. Such clearance region indicates space that should not intersect with the 'Body' representation between element occurrences, though may intersect with the 'Clearance' representation of other element occurrences. The particular use of clearance space may be for safety, maintenance, or other purposes.



Lighting Geometry

The Type Lighting Geometry concept template applies to this entity as shown in Table 229.

TypeGeometry
LightSourceIfcLightSource

Table 229 — IfcDistributionFlowElementType Type Lighting Geometry

This represents the light emission of the item having IfcShapeRepresentation.RepresentationType of 'LightSource' and containing one or more IfcLightSource subtypes. This representation is most applicable to lamps and light fixtures, however may be used at other elements that emit light.



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="5a5d3ad0-61c0-4797-ba1e-1b669145bb68" name="IfcDistributionFlowElementType" status="sample" applicableRootEntity="IfcDistributionFlowElementType">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="f4bd9796-9bab-40a3-b788-7f732fd36866" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="8b99c174-8d14-466c-a8e8-2917be4d62ff" name="Axis Geometry" status="sample" override="false">
      <Template ref="e10f140b-0bf8-4bde-9b8c-8980971063f1" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="Type[Value]='Curve3D' AND Geometry[Type]='IfcBoundedCurve'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="fe193046-447a-4257-8b60-13d3095101ac" name="Clearance Geometry" status="sample" override="false">
      <Template ref="f1ebb0f3-96c9-4912-a475-d012a23f8179" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="Type[Value]='Surface3D' AND Geometry[Type]='IfcSurface'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="0ee2c161-2d30-4618-a227-7375681f049b" name="Lighting Geometry" status="sample" override="false">
      <Template ref="6b6bcc41-3928-4db0-addb-58b771a27d19" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="Type[Value]='LightSource' AND Geometry[Type]='IfcLightSource'" />
      </TemplateRules>
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcTypeProduct
Product Type ShapeProduct Type ShapeGeneral Usage
IfcDistributionFlowElementType
Axis GeometryType Axis GeometryGeneral Usage
Clearance GeometryType Clearance GeometryGeneral Usage
Lighting GeometryType Lighting GeometryGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcDistributionFlowElementType" type="ifc:IfcDistributionFlowElementType" abstract="true" substitutionGroup="ifc:IfcDistributionElementType" nillable="true"/>
 <xs:complexType name="IfcDistributionFlowElementType" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcDistributionElementType"/>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification

Link to this page  Link to this page