Index: Riskeer/Piping/src/Riskeer.Piping.Data/IPipingCalculation.cs
===================================================================
diff -u -r210f00931ebf34d8457c9191f8c743a4206b78a8 -rdb97e444e2528a05a0594286a932bce3d823eac4
--- Riskeer/Piping/src/Riskeer.Piping.Data/IPipingCalculation.cs	(.../IPipingCalculation.cs)	(revision 210f00931ebf34d8457c9191f8c743a4206b78a8)
+++ Riskeer/Piping/src/Riskeer.Piping.Data/IPipingCalculation.cs	(.../IPipingCalculation.cs)	(revision db97e444e2528a05a0594286a932bce3d823eac4)
@@ -30,11 +30,5 @@
     /// <typeparam name="TPipingOutput">The type of calculation output.</typeparam>
     public interface IPipingCalculation<out TPipingInput, out TPipingOutput> : ICalculation<TPipingInput>
         where TPipingInput : PipingInput
-        where TPipingOutput : PipingOutput
-    {
-        /// <summary>
-        /// Gets the results of the piping calculation.
-        /// </summary>
-        TPipingOutput Output { get; }
-    }
+        where TPipingOutput : PipingOutput {}
 }
\ No newline at end of file
Index: Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/PipingCloneAssert.cs
===================================================================
diff -u -r9d81fce2b4838979d13c48cf0adc054fb240625a -rdb97e444e2528a05a0594286a932bce3d823eac4
--- Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/PipingCloneAssert.cs	(.../PipingCloneAssert.cs)	(revision 9d81fce2b4838979d13c48cf0adc054fb240625a)
+++ Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/PipingCloneAssert.cs	(.../PipingCloneAssert.cs)	(revision db97e444e2528a05a0594286a932bce3d823eac4)
@@ -101,7 +101,6 @@
             Assert.AreEqual(original.Name, clone.Name);
             CoreCloneAssert.AreObjectClones(original.Comments, clone.Comments, CommonCloneAssert.AreClones);
             CoreCloneAssert.AreObjectClones(original.InputParameters, clone.InputParameters, AreClones);
-            CoreCloneAssert.AreObjectClones(original.Output, clone.Output, AreClones);
         }
 
         /// <summary>
@@ -117,6 +116,7 @@
             AreClones((IPipingCalculation<PipingInput, PipingOutput>) original, clone);
             Assert.AreEqual(original.Contribution, clone.Contribution);
             Assert.AreEqual(original.IsRelevant, clone.IsRelevant);
+            CoreCloneAssert.AreObjectClones(original.Output, clone.Output, AreClones);
         }
     }
 }
\ No newline at end of file