Namespaces
- Autodesk.Revit.ApplicationServices Namespace
- Autodesk.Revit.Attributes Namespace
- Autodesk.Revit.Creation Namespace
- Autodesk.Revit.DB Namespace
- Autodesk.Revit.DB.Analysis Namespace
- Autodesk.Revit.DB.Architecture Namespace
- Autodesk.Revit.DB.DirectContext3D Namespace
- Autodesk.Revit.DB.Electrical Namespace
- Autodesk.Revit.DB.Events Namespace
- Autodesk.Revit.DB.ExtensibleStorage Namespace
- Autodesk.Revit.DB.ExternalService Namespace
- Autodesk.Revit.DB.Fabrication Namespace
- Autodesk.Revit.DB.IFC Namespace
- Autodesk.Revit.DB.Infrastructure Namespace
- Autodesk.Revit.DB.Lighting Namespace
- Autodesk.Revit.DB.Macros Namespace
- Autodesk.Revit.DB.Mechanical Namespace
  - 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
    - DuctLiningType Members
    - DuctLiningType Methods
    - DuctLiningType Properties
      - Parameter Property
      - Roughness Property
  - 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
  - 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
  - WaterChillerType Enumeration
  - WaterLoopData Class
  - WaterLoopType Enumeration
  - Zone Class
  - ZoneElementDomainData Class
  - ZoneEquipment Class
  - ZoneEquipmentBehavior Enumeration
  - ZoneEquipmentData Class
  - ZoneEquipmentHvacType Enumeration
- Autodesk.Revit.DB.Plumbing Namespace
- Autodesk.Revit.DB.PointClouds Namespace
- Autodesk.Revit.DB.Steel Namespace
- Autodesk.Revit.DB.Structure Namespace
- Autodesk.Revit.DB.Structure.StructuralSections Namespace
- Autodesk.Revit.DB.Visual Namespace
- Autodesk.Revit.Exceptions Namespace
- Autodesk.Revit.UI Namespace
- Autodesk.Revit.UI.Events Namespace
- Autodesk.Revit.UI.Macros Namespace
- Autodesk.Revit.UI.Mechanical Namespace
- Autodesk.Revit.UI.Plumbing Namespace
- Autodesk.Revit.UI.Selection Namespace
What's New

Roughness Property

The roughness of Duct Lining.

Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 23.0.0.0 (23.1.0.0)
Since: 2012

Syntax

C#
public double Roughness { get; set; }

Visual Basic
Public Property Roughness As Double Get Set

Visual C++
public: property double Roughness { double get (); void set (double value); }

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions..::..ArgumentOutOfRangeException	When setting this property: The roughness value should be at least equal to or larger than 0.
Autodesk.Revit.Exceptions..::..DisabledDisciplineException	When setting this property: None of the following disciplines is enabled: Mechanical Electrical Piping.

Syntax

Exceptions

See Also