IfcStackTerminalType

Definition from IAI: The IfcStackTerminalType defines a particular type of IfcFlowTerminal placed at the top of a ventilating stack (to prevent ingress by birds, rainwater etc.) or rainwater pipe (to act as a collector or hopper for discharge from guttering).

HISTORY: New entity in IFC 2x2

Use Definitions

An IfcStackTerminalType identifies a particular type of IfcFlowTerminal that is placed at the top of a vertical pipe in a waste/drainage/rainwater system to fulfill a particular purpose. The purpose is by default in the context of the stack subsystem in which the terminal participates. The particular type of the stack terminal is defined by the set value of the stack terminal type enumeration.

An IfcStackTerminalType may be included into the spatial context of the building model through an (or multiple) instances of IfcFlowTerminal.

Property Set Use Definition:

Note that there are no predefined property sets assigned to this type at present.

Geometry Use Definitions

Representations of the type are defined as representation maps (at the level of the supertype IfcTypeProduct). These are assigned at the occurrence through the IfcShapeRepresentation.Item being an IfcMappedItem.

EXPRESS specification:

ENTITY IfcStackTerminalType

SUBTYPE OF (

IfcFlowTerminalType);

PredefinedType

IfcStackTerminalTypeEnum;

END_ENTITY;

Attribute definitions:

PredefinedType

Identifies the predefined types of stack terminal from which the type required may be set.

Inheritance graph

ENTITY IfcStackTerminalType;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObjectDefinition;

INVERSE

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;

INVERSE

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 IfcDistributionElementType;

ENTITY IfcDistributionFlowElementType;

ENTITY IfcFlowTerminalType;

ENTITY IfcStackTerminalType;

PredefinedType

IfcStackTerminalTypeEnum;

END_ENTITY;