Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationScenario.cs
===================================================================
diff -u -rc7c07db38829afdc5965c331844e1d39123944ff -r3462d84f3304a35ba5ce26c7d3afc9c31cdf9205
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationScenario.cs	(.../PipingCalculationScenario.cs)	(revision c7c07db38829afdc5965c331844e1d39123944ff)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationScenario.cs	(.../PipingCalculationScenario.cs)	(revision 3462d84f3304a35ba5ce26c7d3afc9c31cdf9205)
@@ -21,13 +21,14 @@
 
 using System;
 using Core.Common.Base.Data;
+using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Piping.Data
 {
     /// <summary>
     /// This class holds the information for a calculation scenario.
     /// </summary>
-    public class PipingCalculationScenario : PipingCalculation
+    public class PipingCalculationScenario : PipingCalculation, ICalculationScenario
     {
         private RoundedDouble contribution;