Namespaces
- Autodesk.Revit.ApplicationServices
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- Autodesk.Revit.DB
- Autodesk.Revit.DB.Analysis
- Autodesk.Revit.DB.Architecture
- Autodesk.Revit.DB.DirectContext3D
- Autodesk.Revit.DB.Electrical
- Autodesk.Revit.DB.Events
- Autodesk.Revit.DB.ExtensibleStorage
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- Autodesk.Revit.DB.Infrastructure
- Autodesk.Revit.DB.Lighting
- Autodesk.Revit.DB.Macros
- Autodesk.Revit.DB.Mechanical
  - AirCoolingCoilType Enumeration
  - AirFanType Enumeration
  - AirHeatExchangerType Enumeration
  - AirHeatingCoilType Enumeration
  - AirSystemData Class
  - AnalyticalSystemDomain Enumeration
  - ComponentClassification Enumeration
  - ConditionType Enumeration
  - Duct Class
  - DuctFittingAndAccessoryConnectorData Class
  - DuctFittingAndAccessoryData Class
  - DuctFittingAndAccessoryPressureDropData Class
  - DuctFittingAndAccessoryPressureDropItem Class
  - DuctFlowConfigurationType Enumeration
  - DuctInsulation Class
  - DuctInsulationType Class
  - DuctLining Class
  - DuctLiningType Class
  - DuctLossMethodType Enumeration
  - DuctPressureDropData Class
  - DuctSettings Class
  - DuctShape Enumeration
  - DuctSizeIterator Class
  - DuctSizes Class
  - DuctSizeSettingIterator Class
  - DuctSizeSettings Class
  - DuctSystemType Enumeration
  - DuctType Class
  - EquipmentClassification Enumeration
  - FlexDuct Class
  - FlexDuctType Class
  - IDuctFittingAndAccessoryPressureDropServer Interface
  - IDuctPressureDropServer Interface
  - MechanicalEquipment Class
  - MechanicalEquipmentSet Class
  - MechanicalEquipmentSetType Class
  - MechanicalFitting Class
  - MechanicalSystem Class
  - MechanicalSystemType Class
  - MechanicalUtils Class
    - MechanicalUtils Methods
      - BreakCurve Method
      - ConnectAirTerminalOnDuct Method
      - ConnectDuctPlaceholdersAtCross Method
      - ConnectDuctPlaceholdersAtElbow Method
        ConnectDuctPlaceholdersAtElbow(Document, Connector, Connector) Method
        ConnectDuctPlaceholdersAtElbow(Document, ElementId, ElementId) Method
      - ConnectDuctPlaceholdersAtTee Method
      - ConvertDuctPlaceholders Method
  - MEPAnalyticalSystem Class
  - MEPBuildingConstruction Class
  - MEPBuildingConstructionSet Class
  - MEPBuildingConstructionSetIterator Class
  - MEPHiddenLineSettings Class
  - MEPSection Class
  - MEPSpaceConstruction Class
  - OccupancyUnit Enumeration
  - ReturnAirflowType Enumeration
  - RiseDropSymbol Enumeration
  - Space Class
  - SpaceFilter Class
  - SpaceSet Class
  - SpaceSetIterator Class
  - SpaceTag Class
  - SpaceTagFilter Class
  - SpaceTagType Class
  - SpaceType Enumeration
  - SystemCalculationLevel Enumeration
  - SystemZoneData Class
  - SystemZoneElementType Class
  - WaterChillerType Enumeration
  - WaterLoopData Class
  - WaterLoopType Enumeration
  - Zone Class
  - ZoneElementDomainData Class
  - ZoneEquipment Class
  - ZoneEquipmentBehavior Enumeration
  - ZoneEquipmentData Class
  - ZoneEquipmentHvacType Enumeration
- Autodesk.Revit.DB.Plumbing
- Autodesk.Revit.DB.PointClouds
- Autodesk.Revit.DB.Steel
- Autodesk.Revit.DB.Structure
- Autodesk.Revit.DB.Structure.StructuralSections
- Autodesk.Revit.DB.Visual
- Autodesk.Revit.Exceptions
- Autodesk.Revit.UI
- Autodesk.Revit.UI.Events
- Autodesk.Revit.UI.Macros
- Autodesk.Revit.UI.Mechanical
- Autodesk.Revit.UI.Plumbing
- Autodesk.Revit.UI.Selection
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MechanicalUtils.ConnectDuctPlaceholdersAtElbow(Document, Connector, Connector) Method

Revit 2026 API

MechanicalUtilsConnectDuctPlaceholdersAtElbow(Document, Connector, Connector) Method

Connects a pair of placeholders that can intersect in an Elbow connection.

Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)

Syntax

public static bool ConnectDuctPlaceholdersAtElbow(
	Document document,
	Connector connector1,
	Connector connector2
)

Public Shared Function ConnectDuctPlaceholdersAtElbow ( 
	document As Document,
	connector1 As Connector,
	connector2 As Connector
) As Boolean

public:
static bool ConnectDuctPlaceholdersAtElbow(
	Document^ document, 
	Connector^ connector1, 
	Connector^ connector2
)

static member ConnectDuctPlaceholdersAtElbow : 
        document : Document * 
        connector1 : Connector * 
        connector2 : Connector -> bool

Parameters

document Document: The document.
connector1 Connector: The end connector of the first placeholder.
connector2 Connector: The end connector of the second placeholder.

Return Value

Boolean
True if connection succeeds, false otherwise.

Exceptions

Exception	Condition
ArgumentException	The owner of connector is not duct placeholder. -or- The owners of connectors belong to different types of system.
ArgumentNullException	A non-optional argument was null

Remarks

The placeholders may have a physical intersection but this is not required. If they are not intersecting the connectors must be coplanar and able to be moved to intersect each other. If connection fails, the placeholders cannot be physically connected.

See Also

Reference

MechanicalUtils Class

ConnectDuctPlaceholdersAtElbow Overload

Autodesk.Revit.DB.Mechanical Namespace

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M:Autodesk.Revit.DB.Mechanical.MechanicalUtils.ConnectDuctPlaceholdersAtElbow(Autodesk.Revit.DB.Document,Autodesk.Revit.DB.Connector,Autodesk.Revit.DB.Connector)