Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProbabilityAssessmentProperties.cs
===================================================================
diff -u -rdb399c3f94284852ca23773a931a43338f281e90 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProbabilityAssessmentProperties.cs	(.../FailureMechanismSectionProbabilityAssessmentProperties.cs)	(revision db399c3f94284852ca23773a931a43338f281e90)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProbabilityAssessmentProperties.cs	(.../FailureMechanismSectionProbabilityAssessmentProperties.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -41,12 +41,17 @@
         /// Creates a new instance of <see cref="FailureMechanismSectionProbabilityAssessmentProperties"/>.
         /// </summary>
         /// <param name="section">The section to show the properties for.</param>
+        /// <param name="sectionStart">The start of the section from the beginning
+        /// of the reference line in meters.</param>
+        /// <param name="sectionEnd">The end of the section from the beginning of
+        /// the reference line in meters.</param>
         /// <param name="probabilityAssessmentInput">The probability assessment input belonging to the
         /// failure mechanism of the properties.</param>
         /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
         public FailureMechanismSectionProbabilityAssessmentProperties(FailureMechanismSection section,
+                                                                      double sectionStart, double sectionEnd,
                                                                       ProbabilityAssessmentInput probabilityAssessmentInput)
-            : base(section)
+            : base(section, sectionStart, sectionEnd)
         {
             if (probabilityAssessmentInput == null)
             {
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProperties.cs
===================================================================
diff -u -rdb399c3f94284852ca23773a931a43338f281e90 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProperties.cs	(.../FailureMechanismSectionProperties.cs)	(revision db399c3f94284852ca23773a931a43338f281e90)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionProperties.cs	(.../FailureMechanismSectionProperties.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -41,16 +41,22 @@
         /// Creates a new instance of <see cref="FailureMechanismSectionProperties"/>.
         /// </summary>
         /// <param name="section">The section to show the properties for.</param>
+        /// <param name="sectionStart">The start of the section from the beginning
+        /// of the reference line in meters.</param>
+        /// <param name="sectionEnd">The end of the section from the beginning of
+        /// the reference line in meters.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/>
         /// is <c>null</c>.</exception>
-        public FailureMechanismSectionProperties(FailureMechanismSection section)
+        public FailureMechanismSectionProperties(FailureMechanismSection section, double sectionStart, double sectionEnd)
         {
             if (section == null)
             {
                 throw new ArgumentNullException(nameof(section));
             }
 
             data = section;
+            SectionStart = new RoundedDouble(2, sectionStart);
+            SectionEnd = new RoundedDouble(2, sectionEnd);
         }
 
         [PropertyOrder(1)]
@@ -69,25 +75,13 @@
         [ResourcesCategory(typeof(Resources), nameof(Resources.Categories_General))]
         [ResourcesDisplayName(typeof(Resources), nameof(Resources.SectionStart_DisplayName))]
         [ResourcesDescription(typeof(Resources), nameof(Resources.SectionStart_Description))]
-        public RoundedDouble SectionStart
-        {
-            get
-            {
-                return new RoundedDouble(2);
-            }
-        }
+        public RoundedDouble SectionStart { get; }
 
         [PropertyOrder(3)]
         [ResourcesCategory(typeof(Resources), nameof(Resources.Categories_General))]
         [ResourcesDisplayName(typeof(Resources), nameof(Resources.SectionEnd_DisplayName))]
         [ResourcesDescription(typeof(Resources), nameof(Resources.SectionEnd_Description))]
-        public RoundedDouble SectionEnd
-        {
-            get
-            {
-                return new RoundedDouble(2);
-            }
-        }
+        public RoundedDouble SectionEnd { get; }
 
         [PropertyOrder(4)]
         [ResourcesCategory(typeof(Resources), nameof(Resources.Categories_General))]
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentProperties.cs
===================================================================
diff -u -r94f14096f9a5565b9f961c7b7e1822ef0976a42a -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentProperties.cs	(.../FailureMechanismSectionsProbabilityAssessmentProperties.cs)	(revision 94f14096f9a5565b9f961c7b7e1822ef0976a42a)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentProperties.cs	(.../FailureMechanismSectionsProbabilityAssessmentProperties.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -92,7 +92,8 @@
         {
             get
             {
-                return data.Sections.Select(section => new FailureMechanismSectionProbabilityAssessmentProperties(section, probabilityAssessmentInput)).ToArray();
+                return data.Sections.Select(section => new FailureMechanismSectionProbabilityAssessmentProperties(section, 0, 0,
+                                                                                                                  probabilityAssessmentInput)).ToArray();
             }
         }
 
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProperties.cs
===================================================================
diff -u -r94f14096f9a5565b9f961c7b7e1822ef0976a42a -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProperties.cs	(.../FailureMechanismSectionsProperties.cs)	(revision 94f14096f9a5565b9f961c7b7e1822ef0976a42a)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FailureMechanismSectionsProperties.cs	(.../FailureMechanismSectionsProperties.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -81,7 +81,7 @@
         {
             get
             {
-                return data.Sections.Select(section => new FailureMechanismSectionProperties(section)).ToArray();
+                return data.Sections.Select(section => new FailureMechanismSectionProperties(section, 0, 0)).ToArray();
             }
         }
 
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionProbabilityAssessmentPropertiesTest.cs
===================================================================
diff -u -rdb399c3f94284852ca23773a931a43338f281e90 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionProbabilityAssessmentPropertiesTest.cs	(.../FailureMechanismSectionProbabilityAssessmentPropertiesTest.cs)	(revision db399c3f94284852ca23773a931a43338f281e90)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionProbabilityAssessmentPropertiesTest.cs	(.../FailureMechanismSectionProbabilityAssessmentPropertiesTest.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -40,7 +40,7 @@
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
 
             // Call
-            TestDelegate call = () => new FailureMechanismSectionProbabilityAssessmentProperties(section, null);
+            TestDelegate call = () => new FailureMechanismSectionProbabilityAssessmentProperties(section, double.NaN, double.NaN, null);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -51,11 +51,15 @@
         public void Constructor_ExpectedValues()
         {
             // Setup
+            var random = new Random(21);
+            double sectionStart = random.NextDouble();
+            double sectionEnd = random.NextDouble();
+
             var probabilityAssessmentInput = new TestProbabilityAssessmentInput(0.5, 100);
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
 
             // Call
-            var properties = new FailureMechanismSectionProbabilityAssessmentProperties(section, probabilityAssessmentInput);
+            var properties = new FailureMechanismSectionProbabilityAssessmentProperties(section, sectionStart, sectionEnd, probabilityAssessmentInput);
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionProperties>(properties);
@@ -64,6 +68,9 @@
 
             Assert.AreEqual(2, properties.N.NumberOfDecimalPlaces);
             Assert.AreEqual(1.0, properties.N, properties.N.GetAccuracy());
+
+            Assert.AreEqual(sectionStart, properties.SectionStart, properties.SectionStart.GetAccuracy());
+            Assert.AreEqual(sectionEnd, properties.SectionEnd, properties.SectionEnd.GetAccuracy());
         }
 
         [Test]
@@ -74,7 +81,7 @@
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
 
             // Call
-            var properties = new FailureMechanismSectionProbabilityAssessmentProperties(section, probabilityAssessmentInput);
+            var properties = new FailureMechanismSectionProbabilityAssessmentProperties(section, double.NaN, double.NaN, probabilityAssessmentInput);
 
             // Assert
             PropertyDescriptorCollection dynamicProperties = PropertiesTestHelper.GetAllVisiblePropertyDescriptors(properties);
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionPropertiesTest.cs
===================================================================
diff -u -rdb399c3f94284852ca23773a931a43338f281e90 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionPropertiesTest.cs	(.../FailureMechanismSectionPropertiesTest.cs)	(revision db399c3f94284852ca23773a931a43338f281e90)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionPropertiesTest.cs	(.../FailureMechanismSectionPropertiesTest.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -37,7 +37,7 @@
         public void Constructor_SectionNull_ThrowsArgumentNullException()
         {
             // Call
-            TestDelegate call = () => new FailureMechanismSectionProperties(null);
+            TestDelegate call = () => new FailureMechanismSectionProperties(null, double.NaN, double.NaN);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -48,10 +48,13 @@
         public void Constructor_ExpectedValues()
         {
             // Setup
+            var random = new Random(21);
+            double sectionStart = random.NextDouble();
+            double sectionEnd = random.NextDouble();
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
 
             // Call
-            var properties = new FailureMechanismSectionProperties(section);
+            var properties = new FailureMechanismSectionProperties(section, sectionStart, sectionEnd);
 
             // Assert
             Assert.IsInstanceOf<ObjectProperties<FailureMechanismSection>>(properties);
@@ -65,9 +68,9 @@
             Assert.AreEqual(section.EndPoint, properties.EndPoint);
 
             Assert.AreEqual(2, properties.SectionStart.NumberOfDecimalPlaces);
-            Assert.AreEqual(0.0, properties.SectionStart);
+            Assert.AreEqual(sectionStart, properties.SectionStart, properties.SectionStart.GetAccuracy());
             Assert.AreEqual(2, properties.SectionEnd.NumberOfDecimalPlaces);
-            Assert.AreEqual(0.0, properties.SectionEnd);
+            Assert.AreEqual(sectionEnd, properties.SectionEnd, properties.SectionEnd.GetAccuracy());
         }
 
         [Test]
@@ -77,7 +80,7 @@
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
 
             // Call
-            var properties = new FailureMechanismSectionProperties(section);
+            var properties = new FailureMechanismSectionProperties(section, double.NaN, double.NaN);
 
             // Assert
             PropertyDescriptorCollection dynamicProperties = PropertiesTestHelper.GetAllVisiblePropertyDescriptors(properties);
@@ -126,7 +129,7 @@
         {
             // Setup
             FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
-            var properties = new FailureMechanismSectionProperties(section);
+            var properties = new FailureMechanismSectionProperties(section, double.NaN, double.NaN);
 
             // Call
             string toString = properties.ToString();
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentPropertiesTest.cs
===================================================================
diff -u -r9c62dbc3f18cb81172af025c25ef3cc7b5578035 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentPropertiesTest.cs	(.../FailureMechanismSectionsProbabilityAssessmentPropertiesTest.cs)	(revision 9c62dbc3f18cb81172af025c25ef3cc7b5578035)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsProbabilityAssessmentPropertiesTest.cs	(.../FailureMechanismSectionsProbabilityAssessmentPropertiesTest.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -109,6 +109,9 @@
                     Assert.AreEqual(1 + probabilityAssessmentInput.A * section.Length / probabilityAssessmentInput.B,
                                     property.N,
                                     property.N.GetAccuracy());
+
+                    Assert.AreEqual(0, property.SectionStart, property.SectionStart.GetAccuracy());
+                    Assert.AreEqual(0, property.SectionEnd, property.SectionEnd.GetAccuracy());
                 }
 
                 Assert.AreEqual(sourcePath, properties.SourcePath);
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsPropertiesTest.cs
===================================================================
diff -u -r9c62dbc3f18cb81172af025c25ef3cc7b5578035 -rdbc19eb83d1a3fc64a5f4f4bc2889583a65b4656
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsPropertiesTest.cs	(.../FailureMechanismSectionsPropertiesTest.cs)	(revision 9c62dbc3f18cb81172af025c25ef3cc7b5578035)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FailureMechanismSectionsPropertiesTest.cs	(.../FailureMechanismSectionsPropertiesTest.cs)	(revision dbc19eb83d1a3fc64a5f4f4bc2889583a65b4656)
@@ -1,4 +1,4 @@
-// Copyright (C) Stichting Deltares 2017. All rights reserved.
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
 //
 // This file is part of Ringtoets.
 //
@@ -77,6 +77,8 @@
                     FailureMechanismSection section = sections.ElementAt(i);
                     FailureMechanismSectionProperties property = properties.Sections[i];
                     Assert.AreSame(section, property.Data);
+                    Assert.AreEqual(0, property.SectionStart, property.SectionStart.GetAccuracy());
+                    Assert.AreEqual(0, property.SectionEnd, property.SectionEnd.GetAccuracy());
                 }
 
                 Assert.AreEqual(sourcePath, properties.SourcePath);