6.3.3.8 IfcFastenerType

Type d'élément d'assemblage
Befestigungsmittel - Typ

The element component type IfcFastenerType defines commonly shared information for occurrences of fasteners. The set of shared information may include:

It is used to define a fastener type specification indicating the specific product information that is common to all occurrences of that product type. The IfcFastenerType may be declared within IfcProject or IfcProjectLibrary using IfcRelDeclares and may be exchanged with or without occurrences of the type. Occurrences of IfcFastenerType are represented by instances of IfcFastener.

HISTORY  New entity in IFC2x2.

XSD Specification:

 <xs:element name="IfcFastenerType" type="ifc:IfcFastenerType" substitutionGroup="ifc:IfcElementComponentType" nillable="true"/>
 <xs:complexType name="IfcFastenerType">
  <xs:complexContent>
   <xs:extension base="ifc:IfcElementComponentType">
    <xs:attribute name="PredefinedType" type="ifc:IfcFastenerTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcFastenerType
SUBTYPE OF IfcElementComponentType;
PredefinedType : IfcFastenerTypeEnum;
WHERE
CorrectPredefinedType : (PredefinedType <> IfcFastenerTypeEnum.USERDEFINED) OR ((PredefinedType = IfcFastenerTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Attribute Definitions:

PredefinedType : Subtype of fastener

Formal Propositions:

CorrectPredefinedType : The inherited attribute ElementType shall be provided if the PredefinedType is set to USERDEFINED.

Inheritance Graph:

ENTITY IfcFastenerType
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject
ApplicableOccurrence : OPTIONAL IfcIdentifier;
HasPropertySets : OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
INVERSE
Types : SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct
RepresentationMaps : OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag : OPTIONAL IfcLabel;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElementType
ElementType : OPTIONAL IfcLabel;
ENTITY IfcElementComponentType
ENTITY IfcFastenerType
PredefinedType : IfcFastenerTypeEnum;
END_ENTITY;

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