Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs
===================================================================
diff -u -r4a12b47ea94488f0716d7c61c6cefba235d7db48 -rce94b8228bc7e51779b3754217580f13cb35e475
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResult.cs)	(revision 4a12b47ea94488f0716d7c61c6cefba235d7db48)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/StandAlone/SectionResults/GrassCoverErosionOutwardsFailureMechanismSectionResult.cs	(.../GrassCoverErosionOutwardsFailureMechanismSectionResult.cs)	(revision ce94b8228bc7e51779b3754217580f13cb35e475)
@@ -38,7 +38,10 @@
         /// <param name="section">The <see cref="FailureMechanismSection"/> for which the
         /// <see cref="GrassCoverErosionOutwardsFailureMechanismSectionResult"/> will hold the result.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="section"/> is <c>null</c>.</exception>
-        public GrassCoverErosionOutwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section) {}
+        public GrassCoverErosionOutwardsFailureMechanismSectionResult(FailureMechanismSection section) : base(section)
+        {
+            AssessmentLayerThree = (RoundedDouble)double.NaN;
+        }
 
         /// <summary>
         /// Gets or sets the value representing whether the simple assessment of safety passed.