AreaReinCurve.dll 39f3f2fe-ce81-4e76-9c3e-ec84532eda25 Revit.SDK.Samples.AreaReinCurve.CS.Command AreaReinCurve Turn off all layers but one. You get some parallel bars. Remove the hooks from one boundary curve so that the bars have hooks only at the other end. AlwaysVisible ADSK Autodesk, www.autodesk.com