#### 7.1.3.4 IfcAirTerminalType

| Type d'entrée ou sortie d'air
| Luftauslass - Typ

The flow terminal type IfcAirTerminalType defines commonly shared information for occurrences of air terminals. The set of shared information may include:

- common properties with shared property sets
- common representations
- common materials
- common composition of elements
- common ports

It is used to define an air terminal type specification indicating the specific product information that is common to all occurrences of that product type. The IfcAirTerminalType may be declared within IfcProject or IfcProjectLibrary using IfcRelDeclares and may be exchanged with or without occurrences of the type. Occurrences of IfcAirTerminalType are represented by instances of IfcAirTerminal. Refer to the documentation at IfcAirTerminal for supported property sets, materials, composition, and ports.

## Mechanical System Design

Instance diagram

Predefined Type expected

The Predefined Type expected concept applies to this entity.

Exchange |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Import | - | - | - | R | R | R
Export | - | - | - | R | R | R

Classification

The Classification concept applies to this entity.

Exchange |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Import | - | - | - | R | R | R
Export | - | - | - | R | R | R

Identity

The Identity concept applies to this entity.

Exchange |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Import |  |  |  | R | R | R
Export |  |  |  | R | R | R

XSD Specification:

<xs:element name="IfcAirTerminalType" type="ifc:IfcAirTerminalType" substitutionGroup="ifc:IfcFlowTerminalType" nillable="true"/>
<xs:complexType name="IfcAirTerminalType">
<xs:complexContent>
<xs:extension base="ifc:IfcFlowTerminalType">
<xs:attribute name="PredefinedType" type="ifc:IfcAirTerminalTypeEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcAirTerminalType

| SUBTYPE OF (IfcFlowTerminalType);

PredefinedType | : | IfcAirTerminalTypeEnum;

| WHERE

CorrectPredefinedType | : | (PredefinedType <> IfcAirTerminalTypeEnum.USERDEFINED) OR ((PredefinedType = IfcAirTerminalTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));

END_ENTITY;

Inheritance Graph:

ENTITY IfcAirTerminalType

| ENTITY IfcRoot

GlobalId | : | IfcGloballyUniqueId;
OwnerHistory | : | OPTIONAL IfcOwnerHistory;
Name | : | OPTIONAL IfcLabel;
Description | : | OPTIONAL IfcText;

| ENTITY IfcObjectDefinition

| INVERSE

HasAssignments | : | SET OF IfcRelAssigns FOR RelatedObjects;
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 IfcStrippedOptional;
HasPropertySets | : | OPTIONAL SET [1:?] OF IfcStrippedOptional;

| INVERSE

Types | : | SET [0:1] OF IfcRelDefinesByType FOR RelatingType;

| ENTITY IfcTypeProduct

RepresentationMaps | : | OPTIONAL LIST [1:?] OF UNIQUE IfcStrippedOptional;
Tag | : | OPTIONAL IfcStrippedOptional;

| INVERSE

| ENTITY IfcElementType

ElementType | : | OPTIONAL IfcStrippedOptional;

| ENTITY IfcDistributionElementType

| ENTITY IfcDistributionFlowElementType

| ENTITY IfcFlowTerminalType

| ENTITY IfcAirTerminalType

PredefinedType | : | IfcAirTerminalTypeEnum;

END_ENTITY;

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