All parts of an extruded roof must face upward. Make sure that no part of the sketch lies below any other part of the sketch.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0)
Syntax
C#
public static FailureDefinitionId NonMonotoneRoof { get; }