 | Komponente der TGA (allgemein) - Typ |
 | Distribution Flow Element Type |
 | Type d'élément de distribution de fluide |
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.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
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 |
| 3 | Name | IfcLabel | ? | 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 |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcObjectDefinition | |||||
| HasAssignments | IfcRelAssigns @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 | |
| Nests | IfcRelNests @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 | |
| IsNestedBy | IfcRelNests @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 | |
| HasContext | IfcRelDeclares @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 | |
| IsDecomposedBy | IfcRelAggregates @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 | |
| Decomposes | IfcRelAggregates @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 | |
| HasAssociations | IfcRelAssociates @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 | |||||
| 5 | ApplicableOccurrence | IfcIdentifier | ? |
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:
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 |
| 6 | HasPropertySets | IfcPropertySetDefinition | ? S[1:?] |
Set IFC2x3 CHANGE The attribute aggregate type has been changed from LIST to SET. | X |
| Types | IfcRelDefinesByType @RelatingType | S[0:1] | Reference to the relationship IfcRelDefinedByType and thus to those occurrence objects, which are defined by this type. | X | |
| IfcTypeProduct | |||||
| 7 | RepresentationMaps | IfcRepresentationMap | ? 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 |
| 8 | Tag | IfcLabel | ? | 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 |
| ReferencedBy | IfcRelAssignsToProduct @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 | |||||
| 9 | ElementType | IfcLabel | ? | 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 | |||||
Axis Geometry
The Type Axis Geometry concept template applies to this entity as shown in Table 212.
| ||||
Table 212 — 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 213.
| ||||
Table 213 — 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 214.
| ||||
Table 214 — 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.
Instance diagram
<?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="404d2445-8b89-4d04-a670-7a996cc5f0e1" />
<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 | Template | Model View |
|---|---|---|---|
| IfcRoot | |||
| Identity | Software Identity | General Usage | |
| Revision Control | Revision Control | General Usage | |
| IfcObjectDefinition | |||
| Classification Association | Classification Association | General Usage | |
| IfcTypeProduct | |||
| Product Type Shape | Product Type Shape | General Usage | |
| IfcDistributionFlowElementType | |||
| Axis Geometry | Type Axis Geometry | General Usage | |
| Clearance Geometry | Type Clearance Geometry | General Usage | |
| Lighting Geometry | Type Lighting Geometry | General Usage | |
<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>
ENTITY IfcDistributionFlowElementType
ABSTRACT SUPERTYPE OF(ONEOF(IfcDistributionChamberElementType, IfcEnergyConversionDeviceType, IfcFlowControllerType, IfcFlowFittingType, IfcFlowMovingDeviceType, IfcFlowSegmentType, IfcFlowStorageDeviceType, IfcFlowTerminalType, IfcFlowTreatmentDeviceType))
SUBTYPE OF (IfcDistributionElementType);
END_ENTITY;
Link to this page