Index: Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.Designer.cs
===================================================================
diff -u -r88b53a8d5ebad04e8fb9dd1c240078bdd9904c6f -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 88b53a8d5ebad04e8fb9dd1c240078bdd9904c6f)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -1,4 +1,4 @@
-// Copyright (C) Stichting Deltares 2021. All rights reserved.
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
 //
 // This file is part of Riskeer.
 //
@@ -1780,7 +1780,7 @@
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Toetsoordeel voor dit toetsspoor:.
+        ///   Looks up a localized string similar to Gecombineerde faalkans (1/jaar).
         /// </summary>
         public static string FailureMechanismResultView_FailureMechanismAssemblyLabel {
             get {
Index: Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.resx
===================================================================
diff -u -r88b53a8d5ebad04e8fb9dd1c240078bdd9904c6f -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.resx	(.../Resources.resx)	(revision 88b53a8d5ebad04e8fb9dd1c240078bdd9904c6f)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Properties/Resources.resx	(.../Resources.resx)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -1348,7 +1348,7 @@
     <value>..\Resources\error.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
   <data name="FailureMechanismResultView_FailureMechanismAssemblyLabel" xml:space="preserve">
-    <value>Toetsoordeel voor dit toetsspoor:</value>
+    <value>Gecombineerde faalkans (1/jaar)</value>
   </data>
   <data name="AssemblyCategories_DisplayName" xml:space="preserve">
     <value>Categoriegrenzen</value>
Index: Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.Designer.cs
===================================================================
diff -u -re72b7c913b164e9dc9ca4aeafb52aa1e85ba6346 -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.Designer.cs	(.../FailureMechanismResultView.Designer.cs)	(revision e72b7c913b164e9dc9ca4aeafb52aa1e85ba6346)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.Designer.cs	(.../FailureMechanismResultView.Designer.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -19,6 +19,8 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System.Windows.Forms;
+
 namespace Riskeer.Common.Forms.Views
 {
     partial class FailureMechanismResultView<TSectionResult, TSectionResultRow, TFailureMechanism>
@@ -39,23 +41,30 @@
             this.components = new System.ComponentModel.Container();
             this.TableLayoutPanel = new System.Windows.Forms.TableLayoutPanel();
             this.failureMechanismAssemblyLabel = new System.Windows.Forms.Label();
+            this.probabilityResultTypeComboBox = new System.Windows.Forms.ComboBox();
+            this.failurePathAssemblyProbabilityTextBox = new System.Windows.Forms.TextBox();
             this.DataGridViewControl = new Core.Common.Controls.DataGrid.DataGridViewControl();
+            this.errorProvider = new System.Windows.Forms.ErrorProvider(this.components);
             this.TableLayoutPanel.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.errorProvider)).BeginInit();
             this.SuspendLayout();
             // 
             // TableLayoutPanel
             // 
-            this.TableLayoutPanel.ColumnCount = 3;
-            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle());
-            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
-            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 30F));
+            this.TableLayoutPanel.ColumnCount = 4;
+            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.AutoSize));
+            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.AutoSize));
+            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 150F));
+            this.TableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 363F));
             this.TableLayoutPanel.Controls.Add(this.failureMechanismAssemblyLabel, 0, 0);
+            this.TableLayoutPanel.Controls.Add(this.probabilityResultTypeComboBox, 1, 0);
+            this.TableLayoutPanel.Controls.Add(this.failurePathAssemblyProbabilityTextBox, 2, 0);
             this.TableLayoutPanel.Dock = System.Windows.Forms.DockStyle.Bottom;
-            this.TableLayoutPanel.Location = new System.Drawing.Point(0, 0);
+            this.TableLayoutPanel.Location = new System.Drawing.Point(0, 42);
             this.TableLayoutPanel.Name = "TableLayoutPanel";
             this.TableLayoutPanel.RowCount = 1;
             this.TableLayoutPanel.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
-            this.TableLayoutPanel.Size = new System.Drawing.Size(764, 30);
+            this.TableLayoutPanel.Size = new System.Drawing.Size(764, 40);
             this.TableLayoutPanel.TabIndex = 1;
             // 
             // failureMechanismAssemblyLabel
@@ -64,33 +73,63 @@
             this.failureMechanismAssemblyLabel.Dock = System.Windows.Forms.DockStyle.Fill;
             this.failureMechanismAssemblyLabel.Location = new System.Drawing.Point(3, 0);
             this.failureMechanismAssemblyLabel.Name = "failureMechanismAssemblyLabel";
-            this.failureMechanismAssemblyLabel.Size = new System.Drawing.Size(197, 30);
+            this.failureMechanismAssemblyLabel.Size = new System.Drawing.Size(162, 40);
             this.failureMechanismAssemblyLabel.TabIndex = 2;
             this.failureMechanismAssemblyLabel.Text = global::Riskeer.Common.Forms.Properties.Resources.FailureMechanismResultView_FailureMechanismAssemblyLabel;
             this.failureMechanismAssemblyLabel.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
             // 
+            // probabilityResultTypeComboBox
+            // 
+            this.probabilityResultTypeComboBox.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.probabilityResultTypeComboBox.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.probabilityResultTypeComboBox.FormattingEnabled = true;
+            this.probabilityResultTypeComboBox.Location = new System.Drawing.Point(171, 10);
+            this.probabilityResultTypeComboBox.Margin = new System.Windows.Forms.Padding(3, 10, 3, 10);
+            this.probabilityResultTypeComboBox.Name = "probabilityResultTypeComboBox";
+            this.probabilityResultTypeComboBox.Size = new System.Drawing.Size(121, 21);
+            this.probabilityResultTypeComboBox.TabIndex = 3;
+            this.probabilityResultTypeComboBox.SelectedIndexChanged += new System.EventHandler(this.ProbabilityResultTypeComboBoxSelectedIndexChanged);
+            // 
+            // failurePathAssemblyProbabilityTextBox
+            // 
+            this.failurePathAssemblyProbabilityTextBox.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.failurePathAssemblyProbabilityTextBox.Location = new System.Drawing.Point(298, 10);
+            this.failurePathAssemblyProbabilityTextBox.Margin = new System.Windows.Forms.Padding(3, 10, 3, 10);
+            this.failurePathAssemblyProbabilityTextBox.Name = "failurePathAssemblyProbabilityTextBox";
+            this.failurePathAssemblyProbabilityTextBox.Size = new System.Drawing.Size(100, 20);
+            this.failurePathAssemblyProbabilityTextBox.KeyDown += new KeyEventHandler(this.FailurePathAssemblyProbabilityTextBoxKeyDown);
+            this.failurePathAssemblyProbabilityTextBox.TabIndex = 4;
+            // 
             // DataGridViewControl
             // 
             this.DataGridViewControl.Dock = System.Windows.Forms.DockStyle.Fill;
-            this.DataGridViewControl.Location = new System.Drawing.Point(0, 30);
+            this.DataGridViewControl.Location = new System.Drawing.Point(0, 0);
             this.DataGridViewControl.MultiSelect = true;
             this.DataGridViewControl.Name = "DataGridViewControl";
             this.DataGridViewControl.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.RowHeaderSelect;
-            this.DataGridViewControl.Size = new System.Drawing.Size(764, 52);
+            this.DataGridViewControl.Size = new System.Drawing.Size(764, 42);
             this.DataGridViewControl.TabIndex = 0;
             // 
-            // FailureMechanismResultViewOld
+            // errorProvider
             // 
+            this.errorProvider.BlinkStyle = System.Windows.Forms.ErrorBlinkStyle.NeverBlink;
+            this.errorProvider.ContainerControl = this;
+            this.errorProvider.Icon = global::Riskeer.Common.Forms.Properties.Resources.ErrorIcon;
+            // 
+            // FailureMechanismResultView
+            // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.AutoScroll = true;
             this.AutoScrollMinSize = new System.Drawing.Size(500, 0);
             this.Controls.Add(this.DataGridViewControl);
             this.Controls.Add(this.TableLayoutPanel);
-            this.Name = "FailureMechanismResultViewOld";
+            this.errorProvider.SetIconPadding(this, 10);
+            this.Name = "FailureMechanismResultView";
             this.Size = new System.Drawing.Size(764, 82);
             this.TableLayoutPanel.ResumeLayout(false);
             this.TableLayoutPanel.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.errorProvider)).EndInit();
             this.ResumeLayout(false);
 
         }
@@ -100,5 +139,8 @@
         protected Core.Common.Controls.DataGrid.DataGridViewControl DataGridViewControl;
         protected System.Windows.Forms.TableLayoutPanel TableLayoutPanel;
         private System.Windows.Forms.Label failureMechanismAssemblyLabel;
+        private System.Windows.Forms.ComboBox probabilityResultTypeComboBox;
+        private System.Windows.Forms.TextBox failurePathAssemblyProbabilityTextBox;
+        private ErrorProvider errorProvider;
     }
 }
Index: Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs
===================================================================
diff -u -r74407a8a8acd86ad005b3d9515251193f3cf26af -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision 74407a8a8acd86ad005b3d9515251193f3cf26af)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -21,13 +21,20 @@
 
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Windows.Forms;
 using Core.Common.Base;
 using Core.Common.Controls.DataGrid;
 using Core.Common.Controls.Views;
+using Core.Common.Util;
 using Core.Common.Util.Extensions;
+using Riskeer.Common.Data.AssemblyTool;
+using Riskeer.Common.Data.Exceptions;
 using Riskeer.Common.Data.FailureMechanism;
+using Riskeer.Common.Data.FailurePath;
+using Riskeer.Common.Forms.TypeConverters;
 
 namespace Riskeer.Common.Forms.Views
 {
@@ -38,7 +45,7 @@
     /// <see cref="FailureMechanismResultView{TSectionResult,TSectionResultRow,TFailureMechanism}"/>.</typeparam>
     /// <typeparam name="TSectionResultRow">The type of the row that is used to show the data.</typeparam>
     /// <typeparam name="TFailureMechanism">The type of the failure mechanism this view belongs to.</typeparam>
-    public abstract partial class FailureMechanismResultView<TSectionResult, TSectionResultRow, TFailureMechanism> : UserControl, IView
+    public abstract partial class FailureMechanismResultView<TSectionResult, TSectionResultRow, TFailureMechanism> : UserControl, IView, INotifyPropertyChanged
         where TSectionResult : FailureMechanismSectionResult
         where TSectionResultRow : FailureMechanismSectionResultRow<TSectionResult>
         where TFailureMechanism : IHasSectionResults<FailureMechanismSectionResultOld, TSectionResult>
@@ -50,7 +57,11 @@
 
         private IEnumerable<TSectionResultRow> sectionResultRows;
         private bool rowUpdating;
+        private double failurePathAssemblyProbability;
 
+        private bool probabilityResultTypeComboBoxUpdating;
+        public event PropertyChangedEventHandler PropertyChanged;
+
         /// <summary>
         /// Creates a new instance of <see cref="FailureMechanismResultView{TSectionResult,TSectionResultRow,TFailureMechanism}"/>.
         /// </summary>
@@ -91,13 +102,32 @@
             {
                 Observable = failureMechanismSectionResults
             };
+
+            InitializeComboBox();
+            InitializeTextBox();
         }
 
         /// <summary>
         /// Gets the failure mechanism.
         /// </summary>
         public TFailureMechanism FailureMechanism { get; }
 
+        [TypeConverter(typeof(NoProbabilityValueDoubleConverter))]
+        public double FailurePathAssemblyProbability
+        {
+            get => failurePathAssemblyProbability;
+            set
+            {
+                if (IsManualAssembly())
+                {
+                    FailureMechanism.AssemblyResult.ManualFailurePathAssemblyProbability = value;
+                }
+
+                failurePathAssemblyProbability = value;
+                OnPropertyChanged(nameof(FailurePathAssemblyProbability));
+            }
+        }
+
         public object Data { get; set; }
 
         protected override void OnLoad(EventArgs e)
@@ -119,6 +149,12 @@
         /// <returns>A display object which can be added as a row to the <see cref="DataGridView"/>.</returns>
         protected abstract TSectionResultRow CreateFailureMechanismSectionResultRow(TSectionResult sectionResult);
 
+        /// <summary>
+        /// Gets the length effect factor 'N'.
+        /// </summary>
+        /// <returns>A <see cref="double"/> representing the length effect factor 'N'.</returns>
+        protected abstract double GetN();
+
         protected override void Dispose(bool disposing)
         {
             failureMechanismObserver.Dispose();
@@ -148,6 +184,8 @@
         protected void UpdateView()
         {
             UpdateDataGridViewDataSource();
+            UpdateFailurePathAssemblyControls();
+            UpdateAssemblyData();
         }
 
         /// <summary>
@@ -158,6 +196,51 @@
             DataGridViewControl.RefreshDataGridView(false);
         }
 
+        private void InitializeComboBox()
+        {
+            IEnumerable<EnumDisplayWrapper<FailurePathAssemblyProbabilityResultType>> dataSource =
+                Enum.GetValues(typeof(FailurePathAssemblyProbabilityResultType))
+                    .Cast<FailurePathAssemblyProbabilityResultType>()
+                    .Select(e => new EnumDisplayWrapper<FailurePathAssemblyProbabilityResultType>(e))
+                    .ToArray();
+
+            probabilityResultTypeComboBox.BeginUpdate();
+
+            probabilityResultTypeComboBoxUpdating = true;
+            probabilityResultTypeComboBox.DataSource = dataSource;
+            probabilityResultTypeComboBox.ValueMember = nameof(EnumDisplayWrapper<FailurePathAssemblyProbabilityResultType>.Value);
+            probabilityResultTypeComboBox.DisplayMember = nameof(EnumDisplayWrapper<FailurePathAssemblyProbabilityResultType>.DisplayName);
+            probabilityResultTypeComboBox.SelectedItem = FailureMechanism.AssemblyResult.ProbabilityResultType;
+            probabilityResultTypeComboBoxUpdating = false;
+
+            probabilityResultTypeComboBox.EndUpdate();
+        }
+
+        private void InitializeTextBox()
+        {
+            Binding failurePathAssemblyProbabilityBinding = failurePathAssemblyProbabilityTextBox.DataBindings.Add(nameof(TextBox.Text), this,
+                                                                                                                   nameof(FailurePathAssemblyProbability),
+                                                                                                                   true,
+                                                                                                                   DataSourceUpdateMode.OnValidation);
+            failurePathAssemblyProbabilityBinding.BindingComplete += FailurePathAssemblyProbabilityTextBoxBindingBindingComplete;
+        }
+
+        private void UpdateFailurePathAssemblyControls()
+        {
+            failurePathAssemblyProbabilityTextBox.Enabled = IsManualAssembly();
+            failurePathAssemblyProbabilityTextBox.ReadOnly = !IsManualAssembly();
+            failurePathAssemblyProbabilityTextBox.Refresh();
+        }
+
+        private void UpdateAssemblyData()
+        {
+            ClearErrorMessage();
+
+            FailurePathAssemblyProbability = IsManualAssembly()
+                                                 ? FailureMechanism.AssemblyResult.ManualFailurePathAssemblyProbability
+                                                 : TryGetFailurePathAssemblyProbability();
+        }
+
         /// <summary>
         /// Updates the data source of the data grid view with the current known failure mechanism section results.
         /// </summary>
@@ -198,6 +281,7 @@
         {
             rowUpdating = true;
             RefreshDataGrid();
+            UpdateAssemblyData();
         }
 
         private void HandleCellStyling(object sender, DataGridViewCellFormattingEventArgs e)
@@ -214,6 +298,81 @@
 
             sectionResultRows.ForEachElementDo(row => row.Update());
             DataGridViewControl.RefreshDataGridView();
+
+            UpdateAssemblyData();
         }
+
+        private double TryGetFailurePathAssemblyProbability()
+        {
+            try
+            {
+                return FailurePathAssemblyResultFactory.AssemblyFailurePath(GetN(), sectionResultRows.Select(r => r.AssemblyResult));
+            }
+            catch (AssemblyException e)
+            {
+                SetErrorMessage(e.Message);
+                return double.NaN;
+            }
+        }
+
+        private void ProbabilityResultTypeComboBoxSelectedIndexChanged(object sender, EventArgs e)
+        {
+            if (probabilityResultTypeComboBoxUpdating || probabilityResultTypeComboBox.SelectedIndex == -1)
+            {
+                return;
+            }
+
+            FailureMechanism.AssemblyResult.ProbabilityResultType = (FailurePathAssemblyProbabilityResultType) probabilityResultTypeComboBox.SelectedValue;
+
+            ClearErrorMessage();
+            UpdateAssemblyData();
+            UpdateFailurePathAssemblyControls();
+        }
+
+        private void FailurePathAssemblyProbabilityTextBoxBindingBindingComplete(object sender, BindingCompleteEventArgs e)
+        {
+            if (IsManualAssembly())
+            {
+                if (e.BindingCompleteState != BindingCompleteState.Success)
+                {
+                    SetErrorMessage(e.ErrorText);
+                    FailurePathAssemblyProbability = double.NaN;
+                }
+                else if (e.BindingCompleteState == BindingCompleteState.Success)
+                {
+                    ClearErrorMessage();
+                }
+            }
+        }
+
+        private void FailurePathAssemblyProbabilityTextBoxKeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.KeyCode == Keys.Enter)
+            {
+                failureMechanismAssemblyLabel.Focus(); // Focus on different component to commit value
+                e.Handled = true;
+            }
+        }
+
+        private bool IsManualAssembly()
+        {
+            return FailureMechanism.AssemblyResult.ProbabilityResultType == FailurePathAssemblyProbabilityResultType.Manual;
+        }
+
+        private void SetErrorMessage(string errorMessage)
+        {
+            errorProvider.SetIconPadding(failurePathAssemblyProbabilityTextBox, 5);
+            errorProvider.SetError(failurePathAssemblyProbabilityTextBox, errorMessage);
+        }
+
+        private void ClearErrorMessage()
+        {
+            errorProvider.SetError(failurePathAssemblyProbabilityTextBox, string.Empty);
+        }
+
+        private void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
     }
 }
\ No newline at end of file
Index: Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.resx
===================================================================
diff -u -re72b7c913b164e9dc9ca4aeafb52aa1e85ba6346 -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.resx	(.../FailureMechanismResultView.resx)	(revision e72b7c913b164e9dc9ca4aeafb52aa1e85ba6346)
+++ Riskeer/Common/src/Riskeer.Common.Forms/Views/FailureMechanismResultView.resx	(.../FailureMechanismResultView.resx)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -117,7 +117,8 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
-  <metadata name="toolTip.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="errorProvider.TrayLocation"
+            type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>17, 17</value>
   </metadata>
 </root>
\ No newline at end of file
Index: Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewOldTest.cs
===================================================================
diff -u -rac43a498c0b19cdf26f6007192ef9904f3a6fae3 -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewOldTest.cs	(.../FailureMechanismResultViewOldTest.cs)	(revision ac43a498c0b19cdf26f6007192ef9904f3a6fae3)
+++ Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewOldTest.cs	(.../FailureMechanismResultViewOldTest.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -91,7 +91,7 @@
                 Assert.IsTrue(assemblyResultLabel.AutoSize);
                 Assert.AreEqual(DockStyle.Fill, assemblyResultLabel.Dock);
                 Assert.AreEqual(ContentAlignment.MiddleLeft, assemblyResultLabel.TextAlign);
-                Assert.AreEqual("Toetsoordeel voor dit toetsspoor:", assemblyResultLabel.Text);
+                Assert.AreEqual("Gecombineerde faalkans (1/jaar)", assemblyResultLabel.Text);
 
                 Assert.IsInstanceOf<PictureBox>(tableLayoutPanel.GetControlFromPosition(2, 0));
 
Index: Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewTest.cs
===================================================================
diff -u -r82b497dea6643606db6d39bfce4e86c24bd048d2 -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewTest.cs	(.../FailureMechanismResultViewTest.cs)	(revision 82b497dea6643606db6d39bfce4e86c24bd048d2)
+++ Riskeer/Common/test/Riskeer.Common.Forms.Test/Views/FailureMechanismResultViewTest.cs	(.../FailureMechanismResultViewTest.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -100,14 +100,14 @@
                 Assert.AreEqual(2, view.Controls.Count);
 
                 var tableLayoutPanel = (TableLayoutPanel) new ControlTester("TableLayoutPanel").TheObject;
-                Assert.AreEqual(3, tableLayoutPanel.ColumnCount);
+                Assert.AreEqual(4, tableLayoutPanel.ColumnCount);
                 Assert.AreEqual(1, tableLayoutPanel.RowCount);
 
                 var assemblyResultLabel = (Label) tableLayoutPanel.GetControlFromPosition(0, 0);
                 Assert.IsTrue(assemblyResultLabel.AutoSize);
                 Assert.AreEqual(DockStyle.Fill, assemblyResultLabel.Dock);
                 Assert.AreEqual(ContentAlignment.MiddleLeft, assemblyResultLabel.TextAlign);
-                Assert.AreEqual("Toetsoordeel voor dit toetsspoor:", assemblyResultLabel.Text);
+                Assert.AreEqual("Gecombineerde faalkans (1/jaar)", assemblyResultLabel.Text);
 
                 Assert.IsInstanceOf<UserControl>(view);
                 Assert.IsInstanceOf<IView>(view);
@@ -437,6 +437,13 @@
                 return new TestRow(sectionResult);
             }
 
+            public double N { private get; set; }
+
+            protected override double GetN()
+            {
+                return N;
+            }
+
             protected override void AddDataGridColumns()
             {
                 DataGridViewControl.AddTextBoxColumn(nameof(TestRow.Name), "Test", true);
Index: Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingFailureMechanismResultView.cs
===================================================================
diff -u -r5b444427ebef3934be3d209a66770dfca4154e48 -r77e3b60549930fa1846e5bc11fd5d17af5c35a91
--- Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision 5b444427ebef3934be3d209a66770dfca4154e48)
+++ Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision 77e3b60549930fa1846e5bc11fd5d17af5c35a91)
@@ -26,6 +26,7 @@
 using Riskeer.Common.Data.AssessmentSection;
 using Riskeer.Common.Data.Calculation;
 using Riskeer.Common.Data.FailureMechanism;
+using Riskeer.Common.Data.Probability;
 using Riskeer.Common.Forms;
 using Riskeer.Common.Forms.Builders;
 using Riskeer.Common.Forms.Views;
@@ -102,6 +103,11 @@
             };
         }
 
+        protected override double GetN()
+        {
+            return FailureMechanism.PipingProbabilityAssessmentInput.GetN(assessmentSection.ReferenceLine.Length);
+        }
+
         protected override void Dispose(bool disposing)
         {
             calculationInputObserver.Dispose();