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Definition from buildingSMART: The element type (IfcBeamType) defines a list of commonly shared property set definitions of a beam and an optional set of product representations. It is used to define a beam specification (i.e. the specific product information that is common to all occurrences of that product type).

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

A beam type is used to define the common properties of a certain type of beam that may be applied to many instances of that type to assign a specific style. Beam types may be exchanged without being already assigned to occurrences.

The occurrences of the IfcBeamType are represented by instances of IfcBeam.

HISTORY New entity in Release IFC2x Edition 2.

EXPRESS specification:

ENTITY IfcBeamType
SUBTYPE OF ( IfcBuildingElementType);
PredefinedType  :  IfcBeamTypeEnum;

Attribute definitions:

PredefinedType  :  Identifies the predefined types of a beam element from which the type required may be set.

Inheritance graph

ENTITY IfcBeamType;
GlobalId  :  IfcGloballyUniqueId;
OwnerHistory  :  IfcOwnerHistory;
Name  :  OPTIONAL IfcLabel;
Description  :  OPTIONAL IfcText;
ENTITY IfcObjectDefinition;
HasAssignments  :  SET OF IfcRelAssigns FOR RelatedObjects;
IsDecomposedBy  :  SET OF IfcRelDecomposes FOR RelatingObject;
Decomposes  :  SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;
HasAssociations  :  SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject;
ApplicableOccurrence  :  OPTIONAL IfcLabel;
HasPropertySets  :  OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
ObjectTypeOf  :  SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct;
RepresentationMaps  :  OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag  :  OPTIONAL IfcLabel;
ENTITY IfcElementType;
ElementType  :  OPTIONAL IfcLabel;
ENTITY IfcBuildingElementType;
ENTITY IfcBeamType;
PredefinedType  :  IfcBeamTypeEnum;