Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresFailureMechanismProperties.cs
===================================================================
diff -u -rae723c147c281ccbb2dd0b06c6f863c2d8d0403d -re27a2a4b649ecc232679d527acd5bb4c78e0219d
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresFailureMechanismProperties.cs	(.../HeightStructuresFailureMechanismProperties.cs)	(revision ae723c147c281ccbb2dd0b06c6f863c2d8d0403d)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/PropertyClasses/HeightStructuresFailureMechanismProperties.cs	(.../HeightStructuresFailureMechanismProperties.cs)	(revision e27a2a4b649ecc232679d527acd5bb4c78e0219d)
@@ -38,11 +38,12 @@
     {
         private const int namePropertyIndex = 1;
         private const int codePropertyIndex = 2;
-        private const int isRelevantPropertyIndex = 3;
-        private const int gravitationalAccelerationPropertyIndex = 4;
-        private const int nPropertyIndex = 5;
-        private const int modelFactorOvertoppingFlowPropertyIndex = 6;
-        private const int modelFactorStorageVolumePropertyIndex = 7;
+        private const int contributionPropertyIndex = 3;
+        private const int isRelevantPropertyIndex = 4;
+        private const int gravitationalAccelerationPropertyIndex = 5;
+        private const int nPropertyIndex = 6;
+        private const int modelFactorOvertoppingFlowPropertyIndex = 7;
+        private const int modelFactorStorageVolumePropertyIndex = 8;
 
         /// <summary>
         /// Creates a new instance of <see cref="HeightStructuresFailureMechanismProperties"/>.
@@ -90,7 +91,8 @@
 
         private bool ShouldHidePropertyWhenFailureMechanismIrrelevant(string propertyName)
         {
-            return nameof(N).Equals(propertyName)
+            return nameof(Contribution).Equals(propertyName)
+                   || nameof(N).Equals(propertyName)
                    || nameof(GravitationalAcceleration).Equals(propertyName)
                    || nameof(ModelFactorOvertoppingFlow).Equals(propertyName)
                    || nameof(ModelFactorStorageVolume).Equals(propertyName);
@@ -122,6 +124,19 @@
             }
         }
 
+        [DynamicVisible]
+        [PropertyOrder(contributionPropertyIndex)]
+        [ResourcesCategory(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.Categories_General))]
+        [ResourcesDisplayName(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.FailureMechanism_Contribution_DisplayName))]
+        [ResourcesDescription(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.FailureMechanism_Contribution_Description))]
+        public double Contribution
+        {
+            get
+            {
+                return data.Contribution;
+            }
+        }
+
         [PropertyOrder(isRelevantPropertyIndex)]
         [ResourcesCategory(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.Categories_General))]
         [ResourcesDisplayName(typeof(RingtoetsCommonFormsResources), nameof(RingtoetsCommonFormsResources.FailureMechanism_IsRelevant_DisplayName))]
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismPropertiesTest.cs
===================================================================
diff -u -r98544d1ded83f880238cb8e69f77b58ec1dbcc19 -re27a2a4b649ecc232679d527acd5bb4c78e0219d
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismPropertiesTest.cs	(.../HeightStructuresFailureMechanismPropertiesTest.cs)	(revision 98544d1ded83f880238cb8e69f77b58ec1dbcc19)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PropertyClasses/HeightStructuresFailureMechanismPropertiesTest.cs	(.../HeightStructuresFailureMechanismPropertiesTest.cs)	(revision e27a2a4b649ecc232679d527acd5bb4c78e0219d)
@@ -38,11 +38,12 @@
     {
         private const int namePropertyIndex = 0;
         private const int codePropertyIndex = 1;
-        private const int isRelevantPropertyIndex = 2;
-        private const int gravitationalAccelerationPropertyIndex = 3;
-        private const int nPropertyIndex = 4;
-        private const int modelFactorOvertoppingFlowPropertyIndex = 5;
-        private const int modelFactorStorageVolumePropertyIndex = 6;
+        private const int contributionPropertyIndex = 2;
+        private const int isRelevantPropertyIndex = 3;
+        private const int gravitationalAccelerationPropertyIndex = 4;
+        private const int nPropertyIndex = 5;
+        private const int modelFactorOvertoppingFlowPropertyIndex = 6;
+        private const int modelFactorStorageVolumePropertyIndex = 7;
 
         [Test]
         public void Constructor_DataNull_ThrowArgumentNullException()
@@ -72,13 +73,12 @@
             // Assert
             Assert.IsInstanceOf<ObjectProperties<HeightStructuresFailureMechanism>>(properties);
             Assert.AreSame(failureMechanism, properties.Data);
-
-            Assert.AreEqual("Kunstwerken - Hoogte kunstwerk", properties.Name);
-            Assert.AreEqual("HTKW", properties.Code);
+            Assert.AreEqual(failureMechanism.Name, properties.Name);
+            Assert.AreEqual(failureMechanism.Code, properties.Code);
+            Assert.AreEqual(failureMechanism.Contribution, properties.Contribution);
             Assert.AreEqual(isRelevant, properties.IsRelevant);
 
             GeneralHeightStructuresInput generalInput = failureMechanism.GeneralInput;
-
             Assert.AreEqual(generalInput.N, properties.N);
             Assert.AreEqual(generalInput.GravitationalAcceleration, properties.GravitationalAcceleration);
             Assert.AreEqual(generalInput.ModelFactorOvertoppingFlow.Mean, properties.ModelFactorOvertoppingFlow.Mean);
@@ -104,7 +104,7 @@
             const string modelSettingsCategory = "Modelinstellingen";
 
             PropertyDescriptorCollection dynamicProperties = PropertiesTestHelper.GetAllVisiblePropertyDescriptors(properties);
-            Assert.AreEqual(7, dynamicProperties.Count);
+            Assert.AreEqual(8, dynamicProperties.Count);
 
             PropertyDescriptor nameProperty = dynamicProperties[namePropertyIndex];
             PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(nameProperty,
@@ -120,6 +120,13 @@
                                                                             "Het label van het toetsspoor.",
                                                                             true);
 
+            PropertyDescriptor contributionProperty = dynamicProperties[contributionPropertyIndex];
+            PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(contributionProperty,
+                                                                            generalCategory,
+                                                                            "Faalkansbijdrage [%]",
+                                                                            "Procentuele bijdrage van dit toetsspoor aan de totale overstromingskans van het traject.",
+                                                                            true);
+
             PropertyDescriptor isRelevantProperty = dynamicProperties[isRelevantPropertyIndex];
             PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(isRelevantProperty,
                                                                             generalCategory,
@@ -187,7 +194,7 @@
                                                                             "Het label van het toetsspoor.",
                                                                             true);
 
-            PropertyDescriptor isRelevantProperty = dynamicProperties[isRelevantPropertyIndex];
+            PropertyDescriptor isRelevantProperty = dynamicProperties[isRelevantPropertyIndex - 1];
             PropertiesTestHelper.AssertRequiredPropertyDescriptorProperties(isRelevantProperty,
                                                                             generalCategory,
                                                                             "Is relevant",
@@ -263,6 +270,7 @@
             Assert.IsTrue(properties.DynamicVisibleValidationMethod(nameof(properties.Code)));
             Assert.IsTrue(properties.DynamicVisibleValidationMethod(nameof(properties.IsRelevant)));
 
+            Assert.AreEqual(isRelevant, properties.DynamicVisibleValidationMethod(nameof(properties.Contribution)));
             Assert.AreEqual(isRelevant, properties.DynamicVisibleValidationMethod(nameof(properties.N)));
             Assert.AreEqual(isRelevant, properties.DynamicVisibleValidationMethod(nameof(properties.GravitationalAcceleration)));
             Assert.AreEqual(isRelevant, properties.DynamicVisibleValidationMethod(nameof(properties.ModelFactorOvertoppingFlow)));