Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismAssemblyFactory.cs
===================================================================
diff -u -r76d5e546e8087c3cd169dd2e6bb04556d88eec87 -rae1937fe2fcb175b4a0f9fa5f1aaed132431f66c
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismAssemblyFactory.cs	(.../DuneErosionFailureMechanismAssemblyFactory.cs)	(revision 76d5e546e8087c3cd169dd2e6bb04556d88eec87)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Data/DuneErosionFailureMechanismAssemblyFactory.cs	(.../DuneErosionFailureMechanismAssemblyFactory.cs)	(revision ae1937fe2fcb175b4a0f9fa5f1aaed132431f66c)
@@ -26,6 +26,7 @@
 using Ringtoets.AssemblyTool.KernelWrapper.Calculators;
 using Ringtoets.AssemblyTool.KernelWrapper.Calculators.Assembly;
 using Ringtoets.AssemblyTool.KernelWrapper.Kernels;
+using Ringtoets.Common.Data.AssemblyTool;
 using Ringtoets.Common.Data.Exceptions;
 
 namespace Ringtoets.DuneErosion.Data
@@ -173,25 +174,28 @@
         /// <summary>
         /// Assembles the failure mechanism assembly.
         /// </summary>
-        /// <param name="failureMechanismSectionResults">The failure mechanism section results to
-        /// get the assembly for.</param>
+        /// <param name="failureMechanism">The failure mechanism to assemble for.</param>
         /// <returns>A <see cref="FailureMechanismAssemblyCategoryGroup"/>.</returns>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanismSectionResults"/>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanism"/>
         /// is <c>null</c>.</exception>
         /// <exception cref="AssemblyException">Thrown when the <see cref="FailureMechanismAssemblyCategoryGroup"/>
         /// could not be created.</exception>
-        public static FailureMechanismAssemblyCategoryGroup AssembleFailureMechanism(
-            IEnumerable<DuneErosionFailureMechanismSectionResult> failureMechanismSectionResults)
+        public static FailureMechanismAssemblyCategoryGroup AssembleFailureMechanism(DuneErosionFailureMechanism failureMechanism)
         {
-            if (failureMechanismSectionResults == null)
+            if (failureMechanism == null)
             {
-                throw new ArgumentNullException(nameof(failureMechanismSectionResults));
+                throw new ArgumentNullException(nameof(failureMechanism));
             }
 
+            if (!failureMechanism.IsRelevant)
+            {
+                return FailureMechanismAssemblyCategoryGroup.NotApplicable;
+            }
+
             IEnumerable<FailureMechanismSectionAssemblyCategoryGroup> sectionAssemblies =
-                failureMechanismSectionResults.Select(sectionResult => (sectionResult.UseManualAssemblyCategoryGroup
-                                                                            ? sectionResult.ManualAssemblyCategoryGroup
-                                                                            : AssembleCombinedAssessment(sectionResult))).ToArray();
+                failureMechanism.SectionResults.Select(sectionResult => (sectionResult.UseManualAssemblyCategoryGroup
+                                                                             ? sectionResult.ManualAssemblyCategoryGroup
+                                                                             : AssembleCombinedAssessment(sectionResult))).ToArray();
 
             IAssemblyToolCalculatorFactory calculatorFactory = AssemblyToolCalculatorFactory.Instance;
             IFailureMechanismAssemblyCalculator calculator =