Share Email Facebook Twitter LinkedIn MEPSection.FrictionFactor Property The friction factor of the section. Namespace: Autodesk.Revit.DB.MechanicalAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public double FrictionFactor { get; }Property ValueDouble Remarks Friction Factor is a number. The friction factor type is UT_Number. See AlsoReferenceMEPSection ClassAutodesk.Revit.DB.Mechanical Namespace