Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probability/ProbabilityAssessmentInput.cs
===================================================================
diff -u -r9a1a700023ce9d02b5257434c45455f39ddd8bf2 -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probability/ProbabilityAssessmentInput.cs	(.../ProbabilityAssessmentInput.cs)	(revision 9a1a700023ce9d02b5257434c45455f39ddd8bf2)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probability/ProbabilityAssessmentInput.cs	(.../ProbabilityAssessmentInput.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -29,7 +29,6 @@
     /// </summary>
     public class ProbabilityAssessmentInput
     {
-        private double contribution;
         private int n;
 
         /// <summary>
@@ -38,7 +37,6 @@
         public ProbabilityAssessmentInput()
         {
             N = 2;
-            Contribution = double.NaN;
         }
 
         /// <summary>
@@ -61,27 +59,5 @@
                 n = value;
             }
         }
-
-        /// <summary>
-        /// Gets or sets the contribution of the failure mechanism as a percentage (0-100) to the total of the 
-        /// failure probability of the assessment section.
-        /// </summary>
-        /// <exception cref="ArgumentOutOfRangeException">Thrown when the <paramref name="value"/> is not 
-        /// in interval [1-100].</exception>
-        public double Contribution
-        {
-            get
-            {
-                return contribution;
-            }
-            set
-            {
-                if (value < 0 || value > 100)
-                {
-                    throw new ArgumentOutOfRangeException("value", Resources.Contribution_Value_should_be_in_interval_0_100);
-                }
-                contribution = value;
-            }
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probability/ProbabilityAssessmentInputTest.cs
===================================================================
diff -u -r9a1a700023ce9d02b5257434c45455f39ddd8bf2 -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probability/ProbabilityAssessmentInputTest.cs	(.../ProbabilityAssessmentInputTest.cs)	(revision 9a1a700023ce9d02b5257434c45455f39ddd8bf2)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probability/ProbabilityAssessmentInputTest.cs	(.../ProbabilityAssessmentInputTest.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -37,7 +37,6 @@
             var probabilityAssessmentInput = new ProbabilityAssessmentInput();
 
             // Assert
-            Assert.AreEqual(double.NaN, probabilityAssessmentInput.Contribution);
             Assert.AreEqual(2, probabilityAssessmentInput.N);
         }
 
@@ -73,38 +72,5 @@
             TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(test, 
                 Resources.N_Value_should_be_in_interval_1_20);
         }
-
-        [Test]
-        [TestCase(0)]
-        [TestCase(50)]
-        [TestCase(100)]
-        public void Contribution_ValueInsideValidRegion_DoesNotThrow(int value)
-        {
-            // Setup
-            var probabilityAssessmentInput = new ProbabilityAssessmentInput();
-
-            // Call
-            TestDelegate test = () => probabilityAssessmentInput.Contribution = value;
-
-            // Assert
-            Assert.DoesNotThrow(test);
-            Assert.AreEqual(value, probabilityAssessmentInput.Contribution);
-        }
-        
-        [Test]
-        [TestCase(-1)]
-        [TestCase(101)]
-        public void Contribution_ValueOutsideValidRegion_ThrowsArgumentOutOfRangeException(int value)
-        {
-            // Setup
-            var probabilityAssessmentInput = new ProbabilityAssessmentInput();
-
-            // Call
-            TestDelegate test = () => probabilityAssessmentInput.Contribution = value;
-
-            // Assert
-            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(test,
-                Resources.Contribution_Value_should_be_in_interval_0_100);
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs
===================================================================
diff -u -r3c1ed9049be26ab9460bf2192c55149c45fbba3c -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision 3c1ed9049be26ab9460bf2192c55149c45fbba3c)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanism.cs	(.../GrassCoverErosionInwardsFailureMechanism.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -56,18 +56,6 @@
             }
         }
 
-        public override double Contribution
-        {
-            get
-            {
-                return ProbabilityAssessmentInput.Contribution;
-            }
-            set
-            {
-                ProbabilityAssessmentInput.Contribution = value;
-            }
-        }
-
         /// <summary>
         /// Gets the general grass cover erosion inwards calculation input parameters that apply to each calculation.
         /// </summary>
Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs
===================================================================
diff -u -r9a1a700023ce9d02b5257434c45455f39ddd8bf2 -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision 9a1a700023ce9d02b5257434c45455f39ddd8bf2)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -213,7 +213,7 @@
         {
             if (output != null)
             {
-                calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm, failureMechanism.ProbabilityAssessmentInput.Contribution, failureMechanism.ProbabilityAssessmentInput.N, output.Beta);
+                calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm, failureMechanism.Contribution, failureMechanism.ProbabilityAssessmentInput.N, output.Beta);
                 calculation.NotifyObservers();
             }
             else
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs
===================================================================
diff -u -r0e8590d1ba6edc87a2ac73240662bfcf45f20914 -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs	(.../GrassCoverErosionInwardsFailureMechanismTest.cs)	(revision 0e8590d1ba6edc87a2ac73240662bfcf45f20914)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismTest.cs	(.../GrassCoverErosionInwardsFailureMechanismTest.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -124,20 +124,5 @@
             Assert.IsTrue(calculations.All(c => c is GrassCoverErosionInwardsCalculation));
             mocks.VerifyAll();
         }
-
-        [Test]
-        public void Contribution_Always_UpdatesProbabilityAssessmentInputContribution()
-        {
-            // Setup
-            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
-            const double newContribution = 12;
-
-            // Call
-            failureMechanism.Contribution = newContribution;
-
-            // Assert
-            Assert.AreEqual(newContribution, failureMechanism.ProbabilityAssessmentInput.Contribution);
-            Assert.AreEqual(newContribution, failureMechanism.Contribution);
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs
===================================================================
diff -u -r3c1ed9049be26ab9460bf2192c55149c45fbba3c -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision 3c1ed9049be26ab9460bf2192c55149c45fbba3c)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -56,18 +56,6 @@
             }
         }
 
-        public override double Contribution
-        {
-            get
-            {
-                return ProbabilityAssessmentInput.Contribution;
-            }
-            set
-            {
-                ProbabilityAssessmentInput.Contribution = value;
-            }
-        }
-
         /// <summary>
         /// Gets the general probabilistic assessment input parameters that apply to each calculation 
         /// in a probabilistic assessment.
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs
===================================================================
diff -u -r9a1a700023ce9d02b5257434c45455f39ddd8bf2 -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs	(.../HeightStructuresGuiPlugin.cs)	(revision 9a1a700023ce9d02b5257434c45455f39ddd8bf2)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs	(.../HeightStructuresGuiPlugin.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -210,7 +210,7 @@
         {
             if (output != null)
             {
-                calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm, failureMechanism.ProbabilityAssessmentInput.Contribution, failureMechanism.ProbabilityAssessmentInput.N, output.Beta);
+                calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm, failureMechanism.Contribution, failureMechanism.ProbabilityAssessmentInput.N, output.Beta);
                 calculation.NotifyObservers();
             }
             else
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs
===================================================================
diff -u -rea180de6e9f5ba1108b4ff3cf7bb7e57de72a37a -r06f95f8ac2bd80176a952183c0bb4e0154b1fc3e
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision ea180de6e9f5ba1108b4ff3cf7bb7e57de72a37a)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision 06f95f8ac2bd80176a952183c0bb4e0154b1fc3e)
@@ -123,20 +123,5 @@
             Assert.IsTrue(calculations.All(c => c is HeightStructuresCalculation));
             mocks.VerifyAll();
         }
-
-        [Test]
-        public void Contribution_Always_UpdatesProbabilityAssessmentInputContribution()
-        {
-            // Setup
-            var failureMechanism = new HeightStructuresFailureMechanism();
-            const double newContribution = 12;
-
-            // Call
-            failureMechanism.Contribution = newContribution;
-
-            // Assert
-            Assert.AreEqual(newContribution, failureMechanism.ProbabilityAssessmentInput.Contribution);
-            Assert.AreEqual(newContribution, failureMechanism.Contribution);
-        }
     }
 }
\ No newline at end of file