diff --git a/EgtBEAMWALL.ViewerOptimizer/BTLViewModel/BTLPartVM.vb b/EgtBEAMWALL.ViewerOptimizer/BTLViewModel/BTLPartVM.vb
index 3dc726a4..77f5405f 100644
--- a/EgtBEAMWALL.ViewerOptimizer/BTLViewModel/BTLPartVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/BTLViewModel/BTLPartVM.vb
@@ -1827,8 +1827,13 @@ Public Class BTLPartVM
       Dim b3Part As New BBox3d
       EgtGetBBoxGlob(nNewPartId, GDB_BB.STANDARD, b3Part)
       ' ripristino le rotazioni di ROT e FLIP
-      EgtRotate(nNewPartId, b3Part.Center, -Vector3d.Z_AX, nROTATED)
-      EgtRotate(nNewPartId, b3Part.Center, Vector3d.X_AX, nINVERTED)
+      If Map.refProjectVM.BTLStructureVM.nPROJTYPE = BWType.BEAM Then
+         EgtRotate(nNewPartId, b3Part.Center, Vector3d.X_AX, nROTATED)
+         EgtRotate(nNewPartId, b3Part.Center, Vector3d.Z_AX, nINVERTED)
+      Else
+         EgtRotate(nNewPartId, b3Part.Center, -Vector3d.Z_AX, nROTATED)
+         EgtRotate(nNewPartId, b3Part.Center, Vector3d.X_AX, nINVERTED)
+      End If
       ' aggiungo pezzo alla lista
       m_BTLStructureM.AddBTLPart(NewPart)
       Return NewPart