Baluster   |  
 The number of balusters per tread. 
 Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
| Exception | Condition | 
|---|---|
| ArgumentOutOfRangeException | When setting this property: The given value for balusterPerTreadNumber is not positive. | 
 Applicable only if UseBalusterPerTreadOnStairs is true.