MEPSection   Get   |  
 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)
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.