Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs
===================================================================
diff -u -r0d0fc614ee67c51983412fcec6509f8fad4151e3 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision 0d0fc614ee67c51983412fcec6509f8fad4151e3)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -63,7 +63,7 @@
         /// </summary>
         public ClosingStructuresInput()
         {
-            structureNormalOrientation = new RoundedDouble(2);
+            structureNormalOrientation = new RoundedDouble(2, double.NaN);
             factorStormDurationOpenStructure = new RoundedDouble(2, double.NaN);
             deviationWaveDirection = new RoundedDouble(2, double.NaN);
 
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs
===================================================================
diff -u -r0f1cae61805cef8cf2f057cdae0324e4ce13c899 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision 0f1cae61805cef8cf2f057cdae0324e4ce13c899)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -50,7 +50,7 @@
             Assert.IsNull(input.HydraulicBoundaryLocation);
             Assert.IsNull(input.ClosingStructure);
 
-            AssertEqualValue(0, input.StructureNormalOrientation);
+            AssertEqualValue(double.NaN, input.StructureNormalOrientation);
             Assert.AreEqual(2, input.StructureNormalOrientation.NumberOfDecimalPlaces);
 
             Assert.IsNull(input.ForeshoreProfile);
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs
===================================================================
diff -u -rb0bb4ef69ff374014ca42601e4f214cdacbe89b5 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs	(.../HeightStructuresInput.cs)	(revision b0bb4ef69ff374014ca42601e4f214cdacbe89b5)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs	(.../HeightStructuresInput.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -63,7 +63,7 @@
                 StandardDeviation = (RoundedDouble) 0.05
             };
 
-            structureNormalOrientation = new RoundedDouble(2);
+            structureNormalOrientation = new RoundedDouble(2, double.NaN);
 
             modelFactorSuperCriticalFlow = new NormalDistribution(2)
             {
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs
===================================================================
diff -u -rb0bb4ef69ff374014ca42601e4f214cdacbe89b5 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs	(.../HeightStructuresInputTest.cs)	(revision b0bb4ef69ff374014ca42601e4f214cdacbe89b5)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresInputTest.cs	(.../HeightStructuresInputTest.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -56,7 +56,7 @@
             Assert.IsNull(input.HydraulicBoundaryLocation);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
 
-            AssertAreEqual(0, input.StructureNormalOrientation);
+            AssertAreEqual(double.NaN, input.StructureNormalOrientation);
             Assert.AreEqual(2, input.StructureNormalOrientation.NumberOfDecimalPlaces);
 
             AssertAreEqual(0.05, input.LevelCrestStructure.StandardDeviation);
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs
===================================================================
diff -u -r84046dbb7436996acbed15bb2f7b03f35bd93510 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs	(.../StabilityPointStructuresInput.cs)	(revision 84046dbb7436996acbed15bb2f7b03f35bd93510)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructuresInput.cs	(.../StabilityPointStructuresInput.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -75,7 +75,7 @@
         public StabilityPointStructuresInput()
         {
             volumicWeightWater = new RoundedDouble(2, 9.81);
-            structureNormalOrientation = new RoundedDouble(2);
+            structureNormalOrientation = new RoundedDouble(2, double.NaN);
             factorStormDurationOpenStructure = new RoundedDouble(2, double.NaN);
             failureProbabilityRepairClosure = double.NaN;
             probabilityCollisionSecondaryStructure = double.NaN;
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs
===================================================================
diff -u -r84046dbb7436996acbed15bb2f7b03f35bd93510 -r655bf07f2f48502ad49bb0980514db70dbe71704
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs	(.../StabilityPointStructuresInputTest.cs)	(revision 84046dbb7436996acbed15bb2f7b03f35bd93510)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructuresInputTest.cs	(.../StabilityPointStructuresInputTest.cs)	(revision 655bf07f2f48502ad49bb0980514db70dbe71704)
@@ -58,7 +58,7 @@
             Assert.IsFalse(input.UseForeshore);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
 
-//            Assert.IsNaN(input.StructureNormalOrientation);
+            Assert.IsNaN(input.StructureNormalOrientation);
             Assert.AreEqual(2, input.StructureNormalOrientation.NumberOfDecimalPlaces);
 
             AssertEqualValue(9.81, input.VolumicWeightWater);