Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsOutputViewInfoTestBase.cs
===================================================================
diff -u -ref8bf2f90306f8281026cecd4c44782ebe8407ed -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsOutputViewInfoTestBase.cs	(.../GrassCoverErosionInwardsOutputViewInfoTestBase.cs)	(revision ef8bf2f90306f8281026cecd4c44782ebe8407ed)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsOutputViewInfoTestBase.cs	(.../GrassCoverErosionInwardsOutputViewInfoTestBase.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -150,7 +150,7 @@
                 new AssessmentSectionStub());
         }
 
-        protected override IFailureMechanism GetFailureMechanismWithCalculation()
+        protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
         {
             return new GrassCoverErosionInwardsFailureMechanism
             {
Index: Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs
===================================================================
diff -u -rd8bd61b7bc08c01d7965635f028a227d0425d120 -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision d8bd61b7bc08c01d7965635f028a227d0425d120)
+++ Riskeer/HeightStructures/src/Riskeer.HeightStructures.Plugin/HeightStructuresPlugin.cs	(.../HeightStructuresPlugin.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -925,7 +925,7 @@
                                            RiskeerCommonIOResources.Shape_file_filter_Description);
         }
 
-        private bool VerifyStructuresShouldUpdate(IFailureMechanism failureMechanism, string query)
+        private bool VerifyStructuresShouldUpdate(HeightStructuresFailureMechanism failureMechanism, string query)
         {
             var changeHandler = new FailureMechanismCalculationChangeHandler(failureMechanism, query, GetInquiryHelper());
             return !changeHandler.RequireConfirmation() || changeHandler.InquireConfirmation();
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/ViewInfos/MacroStabilityInwardsOutputViewInfoTest.cs
===================================================================
diff -u -rdbe0316b596d72e1d037cb905ed7d3379d747e0e -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/ViewInfos/MacroStabilityInwardsOutputViewInfoTest.cs	(.../MacroStabilityInwardsOutputViewInfoTest.cs)	(revision dbe0316b596d72e1d037cb905ed7d3379d747e0e)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/ViewInfos/MacroStabilityInwardsOutputViewInfoTest.cs	(.../MacroStabilityInwardsOutputViewInfoTest.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -166,7 +166,7 @@
                     new AssessmentSectionStub());
             }
 
-            protected override IFailureMechanism GetFailureMechanismWithCalculation()
+            protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
             {
                 return new MacroStabilityInwardsFailureMechanism
                 {
Index: Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs
===================================================================
diff -u -r12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs	(.../PipingDataSynchronizationService.cs)	(revision 12a7158ec0ebecaaaa9bff38911f6aa1277e8d9c)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/PipingDataSynchronizationService.cs	(.../PipingDataSynchronizationService.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -25,7 +25,6 @@
 using System.Linq;
 using Core.Common.Base;
 using Riskeer.Common.Data.Calculation;
-using Riskeer.Common.Data.FailureMechanism;
 using Riskeer.Common.Data.Hydraulics;
 using Riskeer.Common.IO.SoilProfile;
 using Riskeer.Common.Service;
@@ -370,7 +369,7 @@
             return changedObservables;
         }
 
-        private static IEnumerable<IPipingCalculationScenario<PipingInput>> GetCalculationsWithSoilProfileAssigned(IFailureMechanism failureMechanism,
+        private static IEnumerable<IPipingCalculationScenario<PipingInput>> GetCalculationsWithSoilProfileAssigned(PipingFailureMechanism failureMechanism,
                                                                                                                    PipingStochasticSoilProfile soilProfile)
         {
             return failureMechanism.Calculations
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingProfileSpecificOutputViewInfoTest.cs
===================================================================
diff -u -r013435ed49ecc69ce2a584e37c9d0d7039fa6a7b -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingProfileSpecificOutputViewInfoTest.cs	(.../ProbabilisticFaultTreePipingProfileSpecificOutputViewInfoTest.cs)	(revision 013435ed49ecc69ce2a584e37c9d0d7039fa6a7b)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingProfileSpecificOutputViewInfoTest.cs	(.../ProbabilisticFaultTreePipingProfileSpecificOutputViewInfoTest.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -210,7 +210,7 @@
                     new AssessmentSectionStub());
             }
 
-            protected override IFailureMechanism GetFailureMechanismWithCalculation()
+            protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
             {
                 return new PipingFailureMechanism
                 {
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingSectionSpecificOutputViewInfoTest.cs
===================================================================
diff -u -r013435ed49ecc69ce2a584e37c9d0d7039fa6a7b -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingSectionSpecificOutputViewInfoTest.cs	(.../ProbabilisticFaultTreePipingSectionSpecificOutputViewInfoTest.cs)	(revision 013435ed49ecc69ce2a584e37c9d0d7039fa6a7b)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticFaultTreePipingSectionSpecificOutputViewInfoTest.cs	(.../ProbabilisticFaultTreePipingSectionSpecificOutputViewInfoTest.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -211,7 +211,7 @@
                     new AssessmentSectionStub());
             }
 
-            protected override IFailureMechanism GetFailureMechanismWithCalculation()
+            protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
             {
                 return new PipingFailureMechanism
                 {
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingProfileSpecificOutputViewInfoTest.cs
===================================================================
diff -u -r013435ed49ecc69ce2a584e37c9d0d7039fa6a7b -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingProfileSpecificOutputViewInfoTest.cs	(.../ProbabilisticSubMechanismPipingProfileSpecificOutputViewInfoTest.cs)	(revision 013435ed49ecc69ce2a584e37c9d0d7039fa6a7b)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingProfileSpecificOutputViewInfoTest.cs	(.../ProbabilisticSubMechanismPipingProfileSpecificOutputViewInfoTest.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -210,7 +210,7 @@
                     new AssessmentSectionStub());
             }
 
-            protected override IFailureMechanism GetFailureMechanismWithCalculation()
+            protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
             {
                 return new PipingFailureMechanism
                 {
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingSectionSpecificOutputViewInfoTest.cs
===================================================================
diff -u -r013435ed49ecc69ce2a584e37c9d0d7039fa6a7b -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingSectionSpecificOutputViewInfoTest.cs	(.../ProbabilisticSubMechanismPipingSectionSpecificOutputViewInfoTest.cs)	(revision 013435ed49ecc69ce2a584e37c9d0d7039fa6a7b)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/ViewInfos/ProbabilisticSubMechanismPipingSectionSpecificOutputViewInfoTest.cs	(.../ProbabilisticSubMechanismPipingSectionSpecificOutputViewInfoTest.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -211,7 +211,7 @@
                     new AssessmentSectionStub());
             }
 
-            protected override IFailureMechanism GetFailureMechanismWithCalculation()
+            protected override ICalculatableFailureMechanism GetFailureMechanismWithCalculation()
             {
                 return new PipingFailureMechanism
                 {
Index: Riskeer/StabilityPointStructures/src/Riskeer.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs
===================================================================
diff -u -rd8bd61b7bc08c01d7965635f028a227d0425d120 -r630b69f6fd84eba406323c9c709f3d45d9cfc747
--- Riskeer/StabilityPointStructures/src/Riskeer.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs	(.../StabilityPointStructuresPlugin.cs)	(revision d8bd61b7bc08c01d7965635f028a227d0425d120)
+++ Riskeer/StabilityPointStructures/src/Riskeer.StabilityPointStructures.Plugin/StabilityPointStructuresPlugin.cs	(.../StabilityPointStructuresPlugin.cs)	(revision 630b69f6fd84eba406323c9c709f3d45d9cfc747)
@@ -923,7 +923,7 @@
                                            RiskeerCommonIOResources.Shape_file_filter_Description);
         }
 
-        private bool VerifyStructuresShouldUpdate(IFailureMechanism failureMechanism, string query)
+        private bool VerifyStructuresShouldUpdate(StabilityPointStructuresFailureMechanism failureMechanism, string query)
         {
             var changeHandler = new FailureMechanismCalculationChangeHandler(failureMechanism, query, GetInquiryHelper());
             return !changeHandler.RequireConfirmation() || changeHandler.InquireConfirmation();