EXPRESS Definition
EXPRESS-G Diagram
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EXPRESS Definition |
EXPRESS-G Diagram |
No Simple Types defined in this Schema
No Select Types defined in this Schema
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A IfcActuatorFailPositionEnum
IfcActuatorTypeEnum
IfcAirTerminalBoxTypeEnumC IfcControllerTypeEnum D IfcDamperSizingMethodEnum
IfcDamperTypeEnumS IfcSensorTypeEnum V IfcValveEnum
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A IfcActuator
IfcAirTerminalBoxC IfcController D IfcDamper S IfcSensor V IfcValve
No Functions defined in this Schema
The IfcHvacDomain schema in the domain layer defines basic object concepts required for interoperability between Building Service domain extensions (notably HVAC) and other domain extensions defined in the current IFC model. This schema is new in IFC R2.0.
EXPRESS Definition
Definition from IAI: This enumeration defines the different states for failure for an instance of IfcActuator.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
FailOpen
FailClosed
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration defines the different types of discrete elements an IfcActuator object can fulfill.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
This enumeration defines the available PreDefined Types for IfcActuator
ElectricActuator
PneumaticActuator
HydraulicActuator
HandOperatedActuator
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration identifies different types of air terminal boxes. Note that this enumeration does not define type: it is informational only.
New Enumeration in IFC Release 2.0
ISSUES: See I-472 for changes made in IFC Release 2.0 Beta 3
VariableAirVolume
ConstantVolume
VariableAirVolumeReheat
ConstantVolumeReheat
VariableAirVolumeDualDuct
ConstantVolumeDualDuct
FanPowered
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration defines the different types of discrete elements an IfcController object can fulfill.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
This enumeration defines the available PreDefined Types for IfcController
HvacController
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration defines the sizing methods used for an instance of IfcDamper.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
Nominal
Exact
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration defines the different types of discrete elements an IfcDamper object can fulfill.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
This enumeration defines the available PreDefined Types for IfcDamper
FireDamper
SmokeDamper
FireSmokeDamper
BackdraftDamper
ControlDamper
Louver
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration defines the different types of discrete elements an IfcSensor object can fulfill.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
This enumeration defines the available PreDefined Types for IfcSensor
HvacSensor
UserDefined
NotDefined
EXPRESS Definition
Definition from IAI: This enumeration identifies different types of valves. Note that this enumeration does not define type: it is informational only.
New Enumeration in IFC Release 2.0
ISSUES: No issues to date.
Automated
Angle
AWWA
Ball
Butterfly
Check
Diverter
Gate
Globe
Nace
Needle
Plug
Pipeline
Safety
Threeway
ULFM
UserDefined
NotDefined
 Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines properties of an actuating device typically used in a control system such as a building automation control system.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
IfcObject
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
PredefinedType
Predefined generic types are specified in an Enumeration. A TypeDefinition is available for each generic type (as the required attributes differ). Use Type Definition corresponding to this generic type.
FailPosition
Enumeration defining the types of fail positions for the actuator
WR81
((PredefinedType = IfcActuatorTypeEnum.UserDefined) AND EXISTS(SELF\IfcObject.UserDefinedType)) OR ((PredefinedType <> IfcActuatorTypeEnum.UserDefined) AND NOT(EXISTS(SELF\IfcObject.UserDefinedType)))
Type driven PropertySets
PreDefined Type
Associated PropertySet
ElectricActuator
PneumaticActuator
HydraulicActuator
HandOperatedActuator
UserDefined
NotDefined
Object Geometry in Context
The geometric representation of IfcActuator is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcActuator is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcActuator is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcActuator is not supported.
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Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines properties of an air terminal box, which participates in an HVAC duct distribution system. An air terminal box is typically used to control or modulate the amount of air delivered to its downstream ductwork.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
TerminalBoxType
Enumeration that identifies the type of terminal box (e.g., VariableAirVolume, ConstantVolume, VariableAirVolumeReheat, ConstantVolumeReheat, FanPowered, VariableAirVolumeDualDuct, etc.)
SoundLevel
STRING
Design sound power level
Object Geometry in Context
The geometric representation of IfcAirTerminalBox is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcAirTerminalBox is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcAirTerminalBox is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcAirTerminalBox is not supported.
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Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines properties of a controller which interacts with other devices in a control system such as a building automation control system.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
PredefinedType
Predefined generic types are specified in an Enumeration. A TypeDefinition is available for each generic type (as the required attributes differ). Use Type Definition corresponding to this generic type.
WR81
((PredefinedType = IfcControllerTypeEnum.UserDefined) AND EXISTS(SELF\IfcObject.UserDefinedType)) OR ((PredefinedType <> IfcControllerTypeEnum.UserDefined) AND NOT(EXISTS(SELF\IfcObject.UserDefinedType)))
Type driven PropertySets
PreDefined Type
Associated PropertySet
HvacController
UserDefined
NotDefined
Object Geometry in Context
The geometric representation of IfcController is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcController is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcController is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcController is not supported.
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Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines elements of a damper, which typically is used in an HVAC air distribution system to control or modulate the flow of air.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
PredefinedType
Predefined generic types are specified in an Enumeration. A TypeDefinition is available for each generic type (as the required attributes differ). Use Type Definition corresponding to this generic type.
FrameDepth
The length (or depth) of the damper frame
SizingMethod
Enumeration that identifies whether the damper is sized nominally or with exact measurements.
CloseOffRating
Close off rating - IfcMeasureWithUnit (IfcPressureMeasure)
LeakageAirFlowrate
Leakage air flow rate - IfcMeasureWithUnit (IfcVolumetricFlowrateMeasure)
WR91
((PredefinedType = IfcDamperTypeEnum.UserDefined) AND EXISTS(SELF\IfcObject.UserDefinedType)) OR ((PredefinedType <> IfcDamperTypeEnum.UserDefined) AND NOT(EXISTS(SELF\IfcObject.UserDefinedType)))
Type driven PropertySets
PreDefined Type
Associated PropertySet
FireDamper
SmokeDamper
FireSmokeDamper
BackdraftDamper
ControlDamper
Louver
UserDefined
NotDefined
Object Geometry in Context
The geometric representation of IfcDamper is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcDamper is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcDamper is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcDamper is not supported.
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Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines properties of a sensor which is used for detection in a control system such as a building automation control system.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
PredefinedType
Predefined generic types are specified in an Enumeration. A TypeDefinition is available for each generic type (as the required attributes differ). Use Type Definition corresponding to this generic type.
WR81
((PredefinedType = IfcSensorTypeEnum.UserDefined) AND EXISTS(UserDefinedType)) OR ((PredefinedType <> IfcSensorTypeEnum.UserDefined) AND NOT(EXISTS(UserDefinedType)))
Type driven PropertySets
PreDefined Type
Associated PropertySet
HvacSensor
UserDefined
NotDefined
Object Geometry in Context
The geometric representation of IfcSensor is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcSensor is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcSensor is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcSensor is not supported.
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Fully Attributed View |
EXPRESS Definition |
Definition from IAI: This class defines elements of a valve, which typically is used in an HVAC piping distribution system to control or modulate the flow of the fluid.
New Class in IFC Release 2.0
ISSUES: No issues to date.
IfcRoot
Attribute type (OPT, DER, INV)
Redefinition (SELF)
Attribute / Relation
Data or Rel. type
Definition
CloseOffRating
Close off rating
ValveCv
REAL
Cv value for the valve
ValveType
Type of valve
Object Geometry in Context
The geometric representation of IfcValve is given by the IfcProductShape, allowing multiple geometric representations. Included are:
Local Position
The local placement for IfcValve is defined in its supertype, IfcProduct. It is defined by the
- IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.
Standard Geometric Representation
The standard geometric representation of IfcValve is defined using explicit geometry. The faceted B-Rep capabilities (with or without voids) shall be supported for standard representation.
Currently, the usage of attribute driven geometry for IfcValve is not supported.
