Revit 2025 API
MEPSectionGet |
Gets the loss coefficient for the specified element id in this section.
Namespace: Autodesk.Revit.DB.Mechanical
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
public double GetCoefficient( ElementId elemId )
Public Function GetCoefficient ( elemId As ElementId ) As Double
public: double GetCoefficient( ElementId^ elemId )
member GetCoefficient : elemId : ElementId -> float
Parameters
- elemId ElementId
- The element id which can be duct segment, duct fitting , pipe segment and pipe fitting.
Return Value
Double
Exception | Condition |
---|---|
ArgumentException | The ElementId elemId does not correspond to a valid section member. |
ArgumentNullException | A non-optional argument was null |

For Duct, it is loss coefficient.
For Pipe, the loss coefficient is equivalent to the friction factor.
Loss coefficient is a number.
The unit type is UT_Number.
See Also