Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Forms/Views/ClosingStructuresFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Forms/Views/ClosingStructuresFailureMechanismSectionResultRow.cs	(.../ClosingStructuresFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Forms/Views/ClosingStructuresFailureMechanismSectionResultRow.cs	(.../ClosingStructuresFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -43,15 +43,15 @@
         public ClosingStructuresFailureMechanismSectionResultRow(ClosingStructuresFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-                base.AssessmentLayerThree = value;
+                SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs	(.../FailureMechanismSectionResult.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/FailureMechanism/FailureMechanismSectionResult.cs	(.../FailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -30,8 +30,6 @@
     /// </summary>
     public abstract class FailureMechanismSectionResult : Observable
     {
-        private RoundedDouble assessmentLayerThreeValue;
-
         /// <summary>
         /// Creates a new instance of <see cref="FailureMechanismSectionResult"/>.
         /// </summary>
@@ -45,7 +43,6 @@
             }
             Section = section;
             AssessmentLayerOne = AssessmentLayerOneState.NotAssessed;
-            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
@@ -54,37 +51,8 @@
         public AssessmentLayerOneState AssessmentLayerOne { get; set; }
 
         /// <summary>
-        /// Gets or sets the value of the tailored assessment of safety.
-        /// </summary>
-        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
-        /// <paramref name="value"/> is outside of the valid ranges.</exception>
-        public RoundedDouble AssessmentLayerThree
-        {
-            get
-            {
-                return assessmentLayerThreeValue;
-            }
-            set
-            {
-                assessmentLayerThreeValue = ValidateAssessmentLayerThree(value);
-            }
-        }
-
-        /// <summary>
         /// Gets the encapsulated <see cref="FailureMechanismSection"/>.
         /// </summary>
         public FailureMechanismSection Section { get; private set; }
-
-        /// <summary>
-        /// Validates the value of the tailored assessment of safety
-        /// </summary>
-        /// <param name="value">The value to validate.</param>
-        /// <returns>The validated value.</returns>
-        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
-        /// <paramref name="value"/> is outside of the valid ranges.</exception>
-        protected virtual RoundedDouble ValidateAssessmentLayerThree(RoundedDouble value)
-        {
-            return value;
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresFailureMechanismSectionResult.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresFailureMechanismSectionResult.cs	(.../StructuresFailureMechanismSectionResult.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresFailureMechanismSectionResult.cs	(.../StructuresFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -34,23 +34,40 @@
     /// for the whole section.</typeparam>
     public class StructuresFailureMechanismSectionResult<T> : FailureMechanismSectionResult where T : IStructuresCalculationInput, new()
     {
+        private RoundedDouble assessmentLayerThree;
+
         /// <summary>
         /// Initializes a new instance of <see cref="StructuresFailureMechanismSectionResult{T}"/>.
         /// </summary>
         /// <param name="section">The <see cref="FailureMechanismSection"/> to get the result from.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        protected StructuresFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        protected StructuresFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
 
         /// <summary>
         /// Gets or sets the <see cref="StructuresCalculation{T}"/>, which is chosen 
         /// to be representative for the whole section.
         /// </summary>
         public StructuresCalculation<T> Calculation { get; set; }
 
-        protected override RoundedDouble ValidateAssessmentLayerThree(RoundedDouble value)
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
+        /// <paramref name="value"/> is outside of the valid ranges.</exception>
+        public RoundedDouble AssessmentLayerThree
         {
-            ProbabilityHelper.ValidateProbability(value, null, true);
-            return value;
+            get
+            {
+                return assessmentLayerThree;
+            }
+            set
+            {
+                ProbabilityHelper.ValidateProbability(value, null, true);
+                assessmentLayerThree = value;
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismSectionResultRow.cs	(.../FailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismSectionResultRow.cs	(.../FailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -77,22 +77,6 @@
         }
 
         /// <summary>
-        /// Gets or sets the value representing the result of the layer 3 assessment.
-        /// </summary>
-        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
-        public virtual RoundedDouble AssessmentLayerThree
-        {
-            get
-            {
-                return SectionResult.AssessmentLayerThree;
-            }
-            set
-            {
-                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
-            }
-        }
-
-        /// <summary>
         /// Gets the <see cref="FailureMechanismSectionResult"/> that is the source of this row.
         /// </summary>
         protected T SectionResult { get; }
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/FailureMechanism/FailureMechanismSectionResultTest.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/FailureMechanism/FailureMechanismSectionResultTest.cs	(.../FailureMechanismSectionResultTest.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/FailureMechanism/FailureMechanismSectionResultTest.cs	(.../FailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,11 +20,9 @@
 // All rights reserved.
 
 using System;
-using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
-using Ringtoets.Common.Data.TestUtil;
 
 namespace Ringtoets.Common.Data.Test.FailureMechanism
 {
@@ -43,7 +41,6 @@
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreEqual(AssessmentLayerOneState.NotAssessed, result.AssessmentLayerOne);
-            Assert.IsNaN(result.AssessmentLayerThree);
             Assert.AreSame(section, result.Section);
         }
 
@@ -75,25 +72,6 @@
             Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerOne);
         }
 
-        [Test]
-        [TestCase(double.NaN)]
-        [TestCase(double.PositiveInfinity)]
-        [TestCase(double.NegativeInfinity)]
-        [TestCase(5)]
-        [TestCase(0.5)]
-        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
-        {
-            // Setup
-            FailureMechanismSection section = CreateSection();
-            var failureMechanismSectionResult = new TestFailureMechanismSectionResult(section);
-
-            // Call
-            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
-
-            // Assert
-            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree, failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
-        }
-
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("test", new[]
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Structures/StructuresFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r2cd2b6b5b050b005019185c1c2a4dd28ae0e2ad2 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Structures/StructuresFailureMechanismSectionResultTest.cs	(.../StructuresFailureMechanismSectionResultTest.cs)	(revision 2cd2b6b5b050b005019185c1c2a4dd28ae0e2ad2)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Structures/StructuresFailureMechanismSectionResultTest.cs	(.../StructuresFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -104,7 +104,6 @@
             Assert.AreEqual(validValue, sectionResult.AssessmentLayerThree, sectionResult.AssessmentLayerThree.GetAccuracy());
         }
 
-
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("Section", new[]
Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/TestFailureMechanismSectionResultTest.cs
===================================================================
diff -u -rb3b6c13cf736c134476b3db34281332d01ca86b1 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/TestFailureMechanismSectionResultTest.cs	(.../TestFailureMechanismSectionResultTest.cs)	(revision b3b6c13cf736c134476b3db34281332d01ca86b1)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/TestFailureMechanismSectionResultTest.cs	(.../TestFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,6 @@
 // All rights reserved.
 
 using System;
-using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -56,7 +55,6 @@
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreEqual(AssessmentLayerOneState.NotAssessed, result.AssessmentLayerOne);
-            Assert.AreEqual(RoundedDouble.NaN, result.AssessmentLayerThree);
             Assert.AreSame(section, result.Section);
         }
     }
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Views/FailureMechanismSectionResultRowTest.cs
===================================================================
diff -u -rb3b6c13cf736c134476b3db34281332d01ca86b1 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Views/FailureMechanismSectionResultRowTest.cs	(.../FailureMechanismSectionResultRowTest.cs)	(revision b3b6c13cf736c134476b3db34281332d01ca86b1)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Views/FailureMechanismSectionResultRowTest.cs	(.../FailureMechanismSectionResultRowTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -21,14 +21,11 @@
 
 using System;
 using Core.Common.Base;
-using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
-using Core.Common.TestUtil;
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.TestUtil;
-using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 
 namespace Ringtoets.Common.Forms.Test.Views
@@ -60,10 +57,6 @@
             // Assert
             Assert.AreEqual(section.Name, row.Name);
             Assert.AreEqual(result.AssessmentLayerOne, row.AssessmentLayerOne);
-            Assert.AreEqual(result.AssessmentLayerThree, row.AssessmentLayerThree);
-            TestHelper.AssertTypeConverter<TestFailureMechanismSectionResultRow,
-                NoValueRoundedDoubleConverter>(
-                nameof(TestFailureMechanismSectionResultRow.AssessmentLayerThree));
         }
 
         [Test]
@@ -93,23 +86,6 @@
             mocks.VerifyAll();
         }
 
-        [Test]
-        public void AssessmentLayerThree_AlwaysOnChange_ResultPropertyChanged()
-        {
-            // Setup
-            var random = new Random(21);
-            double newValue = random.NextDouble();
-            FailureMechanismSection section = CreateSection();
-            var result = new TestFailureMechanismSectionResult(section);
-            var row = new TestFailureMechanismSectionResultRow(result);
-
-            // Call
-            row.AssessmentLayerThree = (RoundedDouble) newValue;
-
-            // Assert
-            Assert.AreEqual(newValue, result.AssessmentLayerThree, row.AssessmentLayerThree.GetAccuracy());
-        }
-
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("name", new[]
Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismSectionResult.cs
===================================================================
diff -u -r330f2e86f2fb575c436cdbb46b6d31bc246ef6fc -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismSectionResult.cs	(.../DuneErosionFailureMechanismSectionResult.cs)	(revision 330f2e86f2fb575c436cdbb46b6d31bc246ef6fc)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismSectionResult.cs	(.../DuneErosionFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.DuneErosion.Data
@@ -39,12 +40,18 @@
         public DuneErosionFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionSectionResultRow.cs
===================================================================
diff -u -r330f2e86f2fb575c436cdbb46b6d31bc246ef6fc -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionSectionResultRow.cs	(.../DuneErosionSectionResultRow.cs)	(revision 330f2e86f2fb575c436cdbb46b6d31bc246ef6fc)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/Views/DuneErosionSectionResultRow.cs	(.../DuneErosionSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.DuneErosion.Data;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneErosionFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r330f2e86f2fb575c436cdbb46b6d31bc246ef6fc -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneErosionFailureMechanismSectionResultTest.cs	(.../DuneErosionFailureMechanismSectionResultTest.cs)	(revision 330f2e86f2fb575c436cdbb46b6d31bc246ef6fc)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Data.Test/DuneErosionFailureMechanismSectionResultTest.cs	(.../DuneErosionFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 
 namespace Ringtoets.DuneErosion.Data.Test
 {
@@ -32,10 +34,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new DuneErosionFailureMechanismSectionResult(section);
@@ -44,6 +43,35 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            var section = CreateSection();
+            var result = new DuneErosionFailureMechanismSectionResult(section);
+
+            // Call
+            result.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, result.AssessmentLayerThree,
+                            result.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResult.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Data/GrassCoverErosionInwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -32,12 +32,17 @@
     /// </summary>
     public class GrassCoverErosionInwardsFailureMechanismSectionResult : FailureMechanismSectionResult
     {
+        private RoundedDouble assessmentLayerThreeValue;
+
         /// <summary>
         /// Creates a new instance of <see cref="GrassCoverErosionInwardsFailureMechanismSectionResult"/>.
         /// </summary>
         /// <param name="section">The <see cref="FailureMechanismSection"/> to get the result from.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public GrassCoverErosionInwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public GrassCoverErosionInwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            assessmentLayerThreeValue = RoundedDouble.NaN;
+        }
 
         /// <summary>
         /// Gets the value of assessment layer two a.
@@ -60,10 +65,22 @@
         /// </summary>
         public GrassCoverErosionInwardsCalculation Calculation { get; set; }
 
-        protected override RoundedDouble ValidateAssessmentLayerThree(RoundedDouble value)
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
+        /// <paramref name="value"/> is outside of the valid ranges.</exception>
+        public RoundedDouble AssessmentLayerThree
         {
-            ProbabilityHelper.ValidateProbability(value, null, true);
-            return value;
+            get
+            {
+                return assessmentLayerThreeValue;
+            }
+            set
+            {
+                ProbabilityHelper.ValidateProbability(value, null, true);
+                assessmentLayerThreeValue = value;
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Forms/Views/GrassCoverErosionInwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -44,15 +44,15 @@
         public GrassCoverErosionInwardsFailureMechanismSectionResultRow(GrassCoverErosionInwardsFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-               base.AssessmentLayerThree = value;
+               SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -rfcd32c8e949b4581cc20adcaa7cf7639fcb69d20 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResult.cs)	(revision fcd32c8e949b4581cc20adcaa7cf7639fcb69d20)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Data/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.GrassCoverErosionOutwards.Data
@@ -39,12 +40,18 @@
         public GrassCoverErosionOutwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs
===================================================================
diff -u -rfcd32c8e949b4581cc20adcaa7cf7639fcb69d20 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs)	(revision fcd32c8e949b4581cc20adcaa7cf7639fcb69d20)
+++ Ringtoets/GrassCoverErosionOutwards/src/Ringtoets.GrassCoverErosionOutwards.Forms/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.GrassCoverErosionOutwards.Data;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsFailureMechanismSectionResultTest.cs
===================================================================
diff -u -rfcd32c8e949b4581cc20adcaa7cf7639fcb69d20 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultTest.cs)	(revision fcd32c8e949b4581cc20adcaa7cf7639fcb69d20)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 
 namespace Ringtoets.GrassCoverErosionOutwards.Data.Test
 {
@@ -32,17 +34,43 @@
         public void Constructor_WithSection_ResultCreatedForSection()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new GrassCoverErosionOutwardsFailureMechanismSectionResult(section);
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new GrassCoverErosionOutwardsFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRowTest.cs
===================================================================
diff -u -rfcd32c8e949b4581cc20adcaa7cf7639fcb69d20 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRowTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRowTest.cs)	(revision fcd32c8e949b4581cc20adcaa7cf7639fcb69d20)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsFailureMechanismSectionResultRowTest.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResultRowTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,13 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
+using Core.Common.TestUtil;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.GrassCoverErosionOutwards.Data;
 using Ringtoets.GrassCoverErosionOutwards.Forms.Views;
@@ -44,6 +48,9 @@
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResultRow<GrassCoverErosionOutwardsFailureMechanismSectionResult>>(row);
             Assert.AreEqual(result.AssessmentLayerTwoA, row.AssessmentLayerTwoA);
+
+            TestHelper.AssertTypeConverter<GrassCoverErosionOutwardsFailureMechanismSectionResultRow, NoValueRoundedDoubleConverter>(
+                nameof(GrassCoverErosionOutwardsFailureMechanismSectionResultRow.AssessmentLayerThree));
         }
 
         [Test]
@@ -62,6 +69,23 @@
             Assert.AreEqual(newValue, result.AssessmentLayerTwoA);
         }
 
+        [Test]
+        public void AssessmentLayerThree_ValueSet_ReturnExpectedValue()
+        {
+            // Setup
+            var random = new Random(21);
+            RoundedDouble assessmentLayerThree = random.NextRoundedDouble();
+
+            var sectionResult = new GrassCoverErosionOutwardsFailureMechanismSectionResult(CreateSection());
+            var row = new GrassCoverErosionOutwardsFailureMechanismSectionResultRow(sectionResult);
+
+            // Call
+            row.AssessmentLayerThree = assessmentLayerThree;
+
+            // Assert
+            Assert.AreEqual(assessmentLayerThree, sectionResult.AssessmentLayerThree);
+        }
+
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("name", new[]
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/Views/HeightStructuresFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/Views/HeightStructuresFailureMechanismSectionResultRow.cs	(.../HeightStructuresFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Forms/Views/HeightStructuresFailureMechanismSectionResultRow.cs	(.../HeightStructuresFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -42,15 +42,15 @@
         public HeightStructuresFailureMechanismSectionResultRow(HeightStructuresFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-                base.AssessmentLayerThree = value;
+                SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResult.cs	(.../GrassCoverSlipOffInwardsFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResult.cs	(.../GrassCoverSlipOffInwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -39,12 +40,18 @@
         public GrassCoverSlipOffInwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -39,12 +40,18 @@
         public GrassCoverSlipOffOutwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResult.cs	(.../MacrostabilityOutwardsFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResult.cs	(.../MacrostabilityOutwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -46,6 +46,7 @@
         public MacrostabilityOutwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = double.NaN;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
@@ -69,5 +70,10 @@
                 assessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResult.cs	(.../MicrostabilityFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResult.cs	(.../MicrostabilityFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -39,12 +40,18 @@
         public MicrostabilityFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResult.cs	(.../PipingStructureFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResult.cs	(.../PipingStructureFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -39,12 +40,18 @@
         public PipingStructureFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -36,6 +37,14 @@
         /// <param name="section">The <see cref="FailureMechanismSection"/> for which the
         /// <see cref="StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult"/> will hold the result.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResult.cs	(.../TechnicalInnovationFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResult.cs	(.../TechnicalInnovationFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -36,6 +37,14 @@
         /// <param name="section">The <see cref="FailureMechanismSection"/> for which the
         /// <see cref="TechnicalInnovationFailureMechanismSectionResult"/> will hold the result.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public TechnicalInnovationFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public TechnicalInnovationFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResult.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResult.cs	(.../WaterPressureAsphaltCoverFailureMechanismSectionResult.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResult.cs	(.../WaterPressureAsphaltCoverFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.Integration.Data.StandAlone.SectionResults
@@ -36,6 +37,14 @@
         /// <param name="section">The <see cref="FailureMechanismSection"/> for which the
         /// <see cref="WaterPressureAsphaltCoverFailureMechanismSectionResult"/> will hold the result.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public WaterPressureAsphaltCoverFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public WaterPressureAsphaltCoverFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffInwardsSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffInwardsSectionResultRow.cs	(.../GrassCoverSlipOffInwardsSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffInwardsSectionResultRow.cs	(.../GrassCoverSlipOffInwardsSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffOutwardsSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffOutwardsSectionResultRow.cs	(.../GrassCoverSlipOffOutwardsSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/GrassCoverSlipOffOutwardsSectionResultRow.cs	(.../GrassCoverSlipOffOutwardsSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MacrostabilityOutwardsSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MacrostabilityOutwardsSectionResultRow.cs	(.../MacrostabilityOutwardsSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MacrostabilityOutwardsSectionResultRow.cs	(.../MacrostabilityOutwardsSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -21,6 +21,7 @@
 
 using System;
 using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
@@ -57,5 +58,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MicrostabilitySectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MicrostabilitySectionResultRow.cs	(.../MicrostabilitySectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/MicrostabilitySectionResultRow.cs	(.../MicrostabilitySectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -54,5 +57,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/PipingStructureSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/PipingStructureSectionResultRow.cs	(.../PipingStructureSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/PipingStructureSectionResultRow.cs	(.../PipingStructureSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/StrengthStabilityLengthwiseConstructionSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/StrengthStabilityLengthwiseConstructionSectionResultRow.cs	(.../StrengthStabilityLengthwiseConstructionSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/StrengthStabilityLengthwiseConstructionSectionResultRow.cs	(.../StrengthStabilityLengthwiseConstructionSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,9 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -37,5 +40,21 @@
         /// so that it can be displayed as a row.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="sectionResult"/> is <c>null</c>.</exception>
         public StrengthStabilityLengthwiseConstructionSectionResultRow(StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/TechnicalInnovationSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/TechnicalInnovationSectionResultRow.cs	(.../TechnicalInnovationSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/TechnicalInnovationSectionResultRow.cs	(.../TechnicalInnovationSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,9 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -37,5 +40,21 @@
         /// so that it can be displayed as a row.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="sectionResult"/> is <c>null</c>.</exception>
         public TechnicalInnovationSectionResultRow(TechnicalInnovationFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/WaterPressureAsphaltCoverSectionResultRow.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/WaterPressureAsphaltCoverSectionResultRow.cs	(.../WaterPressureAsphaltCoverSectionResultRow.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/SectionResultRows/WaterPressureAsphaltCoverSectionResultRow.cs	(.../WaterPressureAsphaltCoverSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,9 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
@@ -37,5 +40,21 @@
         /// so that it can be displayed as a row.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="sectionResult"/> is <c>null</c>.</exception>
         public WaterPressureAsphaltCoverSectionResultRow(WaterPressureAsphaltCoverFailureMechanismSectionResult sectionResult) : base(sectionResult) {}
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj
===================================================================
diff -u -r7b7bd75dc1c1327386c9be96b5d480565bb8ecd6 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj	(.../Ringtoets.Integration.Data.Test.csproj)	(revision 7b7bd75dc1c1327386c9be96b5d480565bb8ecd6)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Ringtoets.Integration.Data.Test.csproj	(.../Ringtoets.Integration.Data.Test.csproj)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -83,6 +83,10 @@
       <Project>{c6309704-d67b-434c-bc98-9f8910bc1d10}</Project>
       <Name>Ringtoets.ClosingStructures.Data</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\Common\test\Ringtoets.Common.Data.TestUtil\Ringtoets.Common.Data.TestUtil.csproj">
+      <Project>{4843D6E5-066F-4795-94F5-1D53932DD03C}</Project>
+      <Name>Ringtoets.Common.Data.TestUtil</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\DuneErosion\src\Ringtoets.DuneErosion.Data\Ringtoets.DuneErosion.Data.csproj">
       <Project>{d1068432-c172-4aa6-847b-d9deb4c6de26}</Project>
       <Name>Ringtoets.DuneErosion.Data</Name>
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverSlipOffInwardsFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffInwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverSlipOffInwardsFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,10 +35,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new GrassCoverSlipOffInwardsFailureMechanismSectionResult(section);
@@ -45,6 +44,36 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+
+            var failureMechanismSectionResult = new GrassCoverSlipOffInwardsFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/GrassCoverSlipOffOutwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,10 +35,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new GrassCoverSlipOffOutwardsFailureMechanismSectionResult(section);
@@ -45,6 +44,36 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new GrassCoverSlipOffOutwardsFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble)newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            var section = new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+            return section;
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResultTest.cs	(.../MacrostabilityOutwardsFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MacrostabilityOutwardsFailureMechanismSectionResultTest.cs	(.../MacrostabilityOutwardsFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,9 +20,11 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -43,6 +45,7 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.IsNaN(result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
 
         [Test]
@@ -86,6 +89,25 @@
             Assert.AreEqual(newValue, result.AssessmentLayerTwoA);
         }
 
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+           var failureMechanismSectionResult = new MacrostabilityOutwardsFailureMechanismSectionResult(CreateSection());
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble)newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("Section", new[]
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResultTest.cs	(.../MicrostabilityFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/MicrostabilityFailureMechanismSectionResultTest.cs	(.../MicrostabilityFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,10 +35,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new MicrostabilityFailureMechanismSectionResult(section);
@@ -45,6 +44,35 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new MicrostabilityFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResultTest.cs	(.../PipingStructureFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/PipingStructureFailureMechanismSectionResultTest.cs	(.../PipingStructureFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,10 +35,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new PipingStructureFailureMechanismSectionResult(section);
@@ -45,6 +44,35 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new PipingStructureFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResultTest.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/StrengthStabilityLengthwiseConstructionFailureMechanismSectionResultTest.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,17 +35,43 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult(section);
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new StrengthStabilityLengthwiseConstructionFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResultTest.cs	(.../TechnicalInnovationFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/TechnicalInnovationFailureMechanismSectionResultTest.cs	(.../TechnicalInnovationFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,17 +35,43 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new TechnicalInnovationFailureMechanismSectionResult(section);
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new TechnicalInnovationFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r802ea30d1fe8fbae93e58dff9ab054dbabca11ae -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResultTest.cs	(.../WaterPressureAsphaltCoverFailureMechanismSectionResultTest.cs)	(revision 802ea30d1fe8fbae93e58dff9ab054dbabca11ae)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/StandAlone/SectionResults/WaterPressureAsphaltCoverFailureMechanismSectionResultTest.cs	(.../WaterPressureAsphaltCoverFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.Data.StandAlone.SectionResults;
 
 namespace Ringtoets.Integration.Data.Test.StandAlone.SectionResults
@@ -33,17 +35,43 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new WaterPressureAsphaltCoverFailureMechanismSectionResult(section);
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var failureMechanismSectionResult = new WaterPressureAsphaltCoverFailureMechanismSectionResult(section);
+
+            // Call
+            failureMechanismSectionResult.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, failureMechanismSectionResult.AssessmentLayerThree,
+                            failureMechanismSectionResult.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResult.cs	(.../MacroStabilityInwardsFailureMechanismSectionResult.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismSectionResult.cs	(.../MacroStabilityInwardsFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -32,17 +32,34 @@
     /// </summary>
     public class MacroStabilityInwardsFailureMechanismSectionResult : FailureMechanismSectionResult
     {
+        private RoundedDouble assessmentLayerThree;
+
         /// <summary>
         /// Creates a new instance of <see cref="MacroStabilityInwardsFailureMechanismSectionResult"/>.
         /// </summary>
         /// <param name="section">The <see cref="FailureMechanismSection"/> to get the result from.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public MacroStabilityInwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public MacroStabilityInwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
 
-        protected override RoundedDouble ValidateAssessmentLayerThree(RoundedDouble value)
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
+        /// <paramref name="value"/> is outside of the valid ranges.</exception>
+        public RoundedDouble AssessmentLayerThree
         {
-            ProbabilityHelper.ValidateProbability(value, null, true);
-            return value;
+            get
+            {
+                return assessmentLayerThree;
+            }
+            set
+            {
+                ProbabilityHelper.ValidateProbability(value, null, true);
+                assessmentLayerThree = value;
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismSectionResultRow.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismSectionResultRow.cs	(.../MacroStabilityInwardsFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -57,15 +57,15 @@
         }
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-                base.AssessmentLayerThree = value;
+                SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs
===================================================================
diff -u -rb6e0f8d41d92ed18c902138dd49cce6e703ee883 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs	(.../PipingFailureMechanismSectionResult.cs)	(revision b6e0f8d41d92ed18c902138dd49cce6e703ee883)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanismSectionResult.cs	(.../PipingFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -32,17 +32,34 @@
     /// </summary>
     public class PipingFailureMechanismSectionResult : FailureMechanismSectionResult
     {
+        private RoundedDouble assessmentLayerThree;
+
         /// <summary>
         /// Creates a new instance of <see cref="PipingFailureMechanismSectionResult"/>.
         /// </summary>
         /// <param name="section">The <see cref="FailureMechanismSection"/> to get the result from.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public PipingFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public PipingFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = RoundedDouble.NaN;
+        }
 
-        protected override RoundedDouble ValidateAssessmentLayerThree(RoundedDouble value)
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when 
+        /// <paramref name="value"/> is outside of the valid ranges.</exception>
+        public RoundedDouble AssessmentLayerThree
         {
-            ProbabilityHelper.ValidateProbability(value, null, true);
-            return value;
+            get
+            {
+                return assessmentLayerThree;
+            }
+            set
+            {
+                ProbabilityHelper.ValidateProbability(value, null, true);
+                assessmentLayerThree = value;
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismSectionResultRow.cs	(.../PipingFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismSectionResultRow.cs	(.../PipingFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -57,15 +57,15 @@
         }
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-                base.AssessmentLayerThree = value;
+                SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r0aacf2dc29138c69f365fe26a143d4e83b172dbe -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRow.cs)	(revision 0aacf2dc29138c69f365fe26a143d4e83b172dbe)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Forms/Views/StabilityPointStructuresFailureMechanismSectionResultRow.cs	(.../StabilityPointStructuresFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -55,15 +55,15 @@
         }
 
         [TypeConverter(typeof(NoProbabilityValueRoundedDoubleConverter))]
-        public override RoundedDouble AssessmentLayerThree
+        public RoundedDouble AssessmentLayerThree
         {
             get
             {
-                return base.AssessmentLayerThree;
+                return SectionResult.AssessmentLayerThree;
             }
             set
             {
-                base.AssessmentLayerThree = value;
+                SectionResult.AssessmentLayerThree = value;
             }
         }
 
Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanismSectionResult.cs
===================================================================
diff -u -r94f2ec1496623ae488b567f883e66b4d26243441 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanismSectionResult.cs	(.../StabilityStoneCoverFailureMechanismSectionResult.cs)	(revision 94f2ec1496623ae488b567f883e66b4d26243441)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Data/StabilityStoneCoverFailureMechanismSectionResult.cs	(.../StabilityStoneCoverFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.StabilityStoneCover.Data
@@ -39,12 +40,18 @@
         public StabilityStoneCoverFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverSectionResultRow.cs
===================================================================
diff -u -r94f2ec1496623ae488b567f883e66b4d26243441 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverSectionResultRow.cs	(.../StabilityStoneCoverSectionResultRow.cs)	(revision 94f2ec1496623ae488b567f883e66b4d26243441)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Forms/Views/StabilityStoneCoverSectionResultRow.cs	(.../StabilityStoneCoverSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.StabilityStoneCover.Data;
 
@@ -54,5 +57,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r94f2ec1496623ae488b567f883e66b4d26243441 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverFailureMechanismSectionResultTest.cs	(.../StabilityStoneCoverFailureMechanismSectionResultTest.cs)	(revision 94f2ec1496623ae488b567f883e66b4d26243441)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverFailureMechanismSectionResultTest.cs	(.../StabilityStoneCoverFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 
 namespace Ringtoets.StabilityStoneCover.Data.Test
 {
@@ -32,10 +34,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new StabilityStoneCoverFailureMechanismSectionResult(section);
@@ -44,6 +43,35 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var result = new StabilityStoneCoverFailureMechanismSectionResult(section);
+
+            // Call
+            result.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, result.AssessmentLayerThree,
+                            result.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverSectionResultRowTest.cs
===================================================================
diff -u -r94f2ec1496623ae488b567f883e66b4d26243441 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverSectionResultRowTest.cs	(.../StabilityStoneCoverSectionResultRowTest.cs)	(revision 94f2ec1496623ae488b567f883e66b4d26243441)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/Views/StabilityStoneCoverSectionResultRowTest.cs	(.../StabilityStoneCoverSectionResultRowTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -48,6 +48,8 @@
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResultRow<StabilityStoneCoverFailureMechanismSectionResult>>(row);
+            TestHelper.AssertTypeConverter<StabilityStoneCoverSectionResultRow, NoValueRoundedDoubleConverter>(
+                nameof(StabilityStoneCoverSectionResultRow.AssessmentLayerThree));
         }
 
         [Test]
Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanismSectionResult.cs
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanismSectionResult.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResult.cs)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Data/WaveImpactAsphaltCoverFailureMechanismSectionResult.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResult.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
 
 namespace Ringtoets.WaveImpactAsphaltCover.Data
@@ -39,12 +40,18 @@
         public WaveImpactAsphaltCoverFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
         {
             AssessmentLayerTwoA = AssessmentLayerTwoAResult.NotCalculated;
+            AssessmentLayerThree = RoundedDouble.NaN;
         }
 
         /// <summary>
         /// Gets or sets the value of the detailed assessment of safety per failure mechanism section, for which
         /// the result is a value of <see cref="AssessmentLayerTwoAResult"/>.
         /// </summary>
         public AssessmentLayerTwoAResult AssessmentLayerTwoA { get; set; }
+
+        /// <summary>
+        /// Gets or sets the value of the tailored assessment of safety.
+        /// </summary>
+        public RoundedDouble AssessmentLayerThree { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRow.cs
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRow.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultRow.cs)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Forms/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRow.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultRow.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -20,7 +20,10 @@
 // All rights reserved.
 
 using System;
+using System.ComponentModel;
+using Core.Common.Base.Data;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.WaveImpactAsphaltCover.Data;
 
@@ -53,5 +56,21 @@
                 SectionResult.AssessmentLayerTwoA = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the value representing the result of the layer 3 assessment.
+        /// </summary>
+        [TypeConverter(typeof(NoValueRoundedDoubleConverter))]
+        public RoundedDouble AssessmentLayerThree
+        {
+            get
+            {
+                return SectionResult.AssessmentLayerThree;
+            }
+            set
+            {
+                SectionResult.AssessmentLayerThree = value.ToPrecision(SectionResult.AssessmentLayerThree.NumberOfDecimalPlaces);
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/Ringtoets.WaveImpactAsphaltCover.Data.Test.csproj
===================================================================
diff -u -r7b7bd75dc1c1327386c9be96b5d480565bb8ecd6 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/Ringtoets.WaveImpactAsphaltCover.Data.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Data.Test.csproj)	(revision 7b7bd75dc1c1327386c9be96b5d480565bb8ecd6)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/Ringtoets.WaveImpactAsphaltCover.Data.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Data.Test.csproj)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -75,6 +75,10 @@
       <Project>{d4200f43-3f72-4f42-af0a-8ced416a38ec}</Project>
       <Name>Ringtoets.Common.Data</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\Common\test\Ringtoets.Common.Data.TestUtil\Ringtoets.Common.Data.TestUtil.csproj">
+      <Project>{4843D6E5-066F-4795-94F5-1D53932DD03C}</Project>
+      <Name>Ringtoets.Common.Data.TestUtil</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Revetment\src\Ringtoets.Revetment.Data\Ringtoets.Revetment.Data.csproj">
       <Project>{87c2c553-c0bc-40bf-b1ea-b83bff357f27}</Project>
       <Name>Ringtoets.Revetment.Data</Name>
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/WaveImpactAsphaltCoverFailureMechanismSectionResultTest.cs
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/WaveImpactAsphaltCoverFailureMechanismSectionResultTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultTest.cs)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Data.Test/WaveImpactAsphaltCoverFailureMechanismSectionResultTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,11 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Data.TestUtil;
 
 namespace Ringtoets.WaveImpactAsphaltCover.Data.Test
 {
@@ -32,10 +34,7 @@
         public void Constructor_WithParameters_ExpectedValues()
         {
             // Setup
-            var section = new FailureMechanismSection("Section", new[]
-            {
-                new Point2D(0, 0)
-            });
+            FailureMechanismSection section = CreateSection();
 
             // Call
             var result = new WaveImpactAsphaltCoverFailureMechanismSectionResult(section);
@@ -44,6 +43,35 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreSame(section, result.Section);
             Assert.AreEqual(AssessmentLayerTwoAResult.NotCalculated, result.AssessmentLayerTwoA);
+            Assert.IsNaN(result.AssessmentLayerThree);
         }
+
+        [Test]
+        [TestCase(double.NaN)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(5)]
+        [TestCase(0.5)]
+        public void AssessmentLayerThree_SetNewValue_ReturnsNewValue(double newValue)
+        {
+            // Setup
+            FailureMechanismSection section = CreateSection();
+            var result = new WaveImpactAsphaltCoverFailureMechanismSectionResult(section);
+
+            // Call
+            result.AssessmentLayerThree = (RoundedDouble) newValue;
+
+            // Assert
+            Assert.AreEqual(newValue, result.AssessmentLayerThree,
+                            result.AssessmentLayerThree.GetAccuracy());
+        }
+
+        private static FailureMechanismSection CreateSection()
+        {
+            return new FailureMechanismSection("Section", new[]
+            {
+                new Point2D(0, 0)
+            });
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRowTest.cs
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -rb5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRowTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultRowTest.cs)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/Views/WaveImpactAsphaltCoverFailureMechanismSectionResultRowTest.cs	(.../WaveImpactAsphaltCoverFailureMechanismSectionResultRowTest.cs)	(revision b5a3ccef1cfc5e4cbfea0a97a8a9ee8ae5a199e2)
@@ -19,9 +19,13 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
+using Core.Common.TestUtil;
 using NUnit.Framework;
 using Ringtoets.Common.Data.FailureMechanism;
+using Ringtoets.Common.Forms.TypeConverters;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.WaveImpactAsphaltCover.Data;
 using Ringtoets.WaveImpactAsphaltCover.Forms.Views;
@@ -43,6 +47,8 @@
 
             // Assert
             Assert.IsInstanceOf<FailureMechanismSectionResultRow<WaveImpactAsphaltCoverFailureMechanismSectionResult>>(row);
+            TestHelper.AssertTypeConverter<WaveImpactAsphaltCoverFailureMechanismSectionResultRow, NoValueRoundedDoubleConverter>(
+                nameof(WaveImpactAsphaltCoverFailureMechanismSectionResultRow.AssessmentLayerThree));
             Assert.AreEqual(result.AssessmentLayerTwoA, row.AssessmentLayerTwoA);
         }
 
@@ -63,6 +69,23 @@
             Assert.AreEqual(newValue, result.AssessmentLayerTwoA);
         }
 
+        [Test]
+        public void AssessmentLayerThree_ValueSet_ReturnExpectedValue()
+        {
+            // Setup
+            var random = new Random(21);
+            RoundedDouble assessmentLayerThree = random.NextRoundedDouble();
+
+            var sectionResult = new WaveImpactAsphaltCoverFailureMechanismSectionResult(CreateSection());
+            var row = new WaveImpactAsphaltCoverFailureMechanismSectionResultRow(sectionResult);
+
+            // Call
+            row.AssessmentLayerThree = assessmentLayerThree;
+
+            // Assert
+            Assert.AreEqual(assessmentLayerThree, sectionResult.AssessmentLayerThree);
+        }
+
         private static FailureMechanismSection CreateSection()
         {
             return new FailureMechanismSection("name", new[]