Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/ClosingStructures/ClosingStructureEntityReadExtensions.cs
===================================================================
diff -u -r8e8f8c83c45656f65adaa8e47600379dc5ae8f61 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/ClosingStructures/ClosingStructureEntityReadExtensions.cs	(.../ClosingStructureEntityReadExtensions.cs)	(revision 8e8f8c83c45656f65adaa8e47600379dc5ae8f61)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/ClosingStructures/ClosingStructureEntityReadExtensions.cs	(.../ClosingStructureEntityReadExtensions.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -57,7 +57,7 @@
                 Name = entity.Name,
                 Id = entity.Id,
                 Location = new Point2D(entity.X.ToNullAsNaN(), entity.Y.ToNullAsNaN()),
-                StructureNormalOrientation = entity.StructureNormalOrientation.ToNullAsNaN(),
+                StructureNormalOrientation = (RoundedDouble) entity.StructureNormalOrientation.ToNullAsNaN(),
                 StorageStructureArea =
                 {
                     Mean = (RoundedDouble) entity.StorageStructureAreaMean.ToNullAsNaN(),
Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/HeightStructures/HeightStructureEntityReadExtensions.cs
===================================================================
diff -u -r8e8f8c83c45656f65adaa8e47600379dc5ae8f61 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/HeightStructures/HeightStructureEntityReadExtensions.cs	(.../HeightStructureEntityReadExtensions.cs)	(revision 8e8f8c83c45656f65adaa8e47600379dc5ae8f61)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/HeightStructures/HeightStructureEntityReadExtensions.cs	(.../HeightStructureEntityReadExtensions.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -57,7 +57,7 @@
                 Name = entity.Name,
                 Id = entity.Id,
                 Location = new Point2D(entity.X.ToNullAsNaN(), entity.Y.ToNullAsNaN()),
-                StructureNormalOrientation = entity.StructureNormalOrientation.ToNullAsNaN(),
+                StructureNormalOrientation = (RoundedDouble) entity.StructureNormalOrientation.ToNullAsNaN(),
                 LevelCrestStructure =
                 {
                     Mean = (RoundedDouble) entity.LevelCrestStructureMean.ToNullAsNaN(),
Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Read/StabilityPointStructures/StabilityPointStructureEntityReadExtensions.cs
===================================================================
diff -u -r6ced2c3bd4adaef7cf2363ba75a84911b09c3924 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Read/StabilityPointStructures/StabilityPointStructureEntityReadExtensions.cs	(.../StabilityPointStructureEntityReadExtensions.cs)	(revision 6ced2c3bd4adaef7cf2363ba75a84911b09c3924)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Read/StabilityPointStructures/StabilityPointStructureEntityReadExtensions.cs	(.../StabilityPointStructureEntityReadExtensions.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -57,7 +57,7 @@
                 Name = entity.Name,
                 Id = entity.Id,
                 Location = new Point2D(entity.X.ToNullAsNaN(), entity.Y.ToNullAsNaN()),
-                StructureNormalOrientation = entity.StructureNormalOrientation.ToNullAsNaN(),
+                StructureNormalOrientation = (RoundedDouble) entity.StructureNormalOrientation.ToNullAsNaN(),
                 StorageStructureArea =
                 {
                     Mean = (RoundedDouble) entity.StorageStructureAreaMean.ToNullAsNaN(),
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/ClosingStructures/ClosingStructureCreateExtensionsTest.cs
===================================================================
diff -u -r8e8f8c83c45656f65adaa8e47600379dc5ae8f61 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/ClosingStructures/ClosingStructureCreateExtensionsTest.cs	(.../ClosingStructureCreateExtensionsTest.cs)	(revision 8e8f8c83c45656f65adaa8e47600379dc5ae8f61)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/ClosingStructures/ClosingStructureCreateExtensionsTest.cs	(.../ClosingStructureCreateExtensionsTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -106,7 +106,7 @@
                 Name = "A",
                 Id = "B",
                 Location = new Point2D(double.NaN, double.NaN),
-                StructureNormalOrientation = double.NaN,
+                StructureNormalOrientation = RoundedDouble.NaN,
                 StorageStructureArea =
                 {
                     Mean = RoundedDouble.NaN,
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/HeightStructures/HeightStructureCreateExtensionsTest.cs
===================================================================
diff -u -r8e8f8c83c45656f65adaa8e47600379dc5ae8f61 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/HeightStructures/HeightStructureCreateExtensionsTest.cs	(.../HeightStructureCreateExtensionsTest.cs)	(revision 8e8f8c83c45656f65adaa8e47600379dc5ae8f61)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/HeightStructures/HeightStructureCreateExtensionsTest.cs	(.../HeightStructureCreateExtensionsTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -95,7 +95,7 @@
                 Name = "A",
                 Id = "B",
                 Location = new Point2D(double.NaN, double.NaN),
-                StructureNormalOrientation = double.NaN,
+                StructureNormalOrientation = RoundedDouble.NaN,
                 AllowedLevelIncreaseStorage =
                 {
                     Mean = RoundedDouble.NaN,
Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/StabilityPointStructures/StabilityPointStructureCreateExtensionsTest.cs
===================================================================
diff -u -r6ced2c3bd4adaef7cf2363ba75a84911b09c3924 -r6e717246d970bc18500da686a51f82101296ff46
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/StabilityPointStructures/StabilityPointStructureCreateExtensionsTest.cs	(.../StabilityPointStructureCreateExtensionsTest.cs)	(revision 6ced2c3bd4adaef7cf2363ba75a84911b09c3924)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/StabilityPointStructures/StabilityPointStructureCreateExtensionsTest.cs	(.../StabilityPointStructureCreateExtensionsTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -126,7 +126,7 @@
                 Name = "A",
                 Id = "B",
                 Location = new Point2D(double.NaN, double.NaN),
-                StructureNormalOrientation = double.NaN,
+                StructureNormalOrientation = RoundedDouble.NaN,
                 StorageStructureArea =
                 {
                     Mean = RoundedDouble.NaN,
Index: Demo/Ringtoets/src/Demo.Ringtoets/Commands/AddNewDemoAssessmentSectionCommand.cs
===================================================================
diff -u -r154172b6706fadc1364f90533138d410a2115571 -r6e717246d970bc18500da686a51f82101296ff46
--- Demo/Ringtoets/src/Demo.Ringtoets/Commands/AddNewDemoAssessmentSectionCommand.cs	(.../AddNewDemoAssessmentSectionCommand.cs)	(revision 154172b6706fadc1364f90533138d410a2115571)
+++ Demo/Ringtoets/src/Demo.Ringtoets/Commands/AddNewDemoAssessmentSectionCommand.cs	(.../AddNewDemoAssessmentSectionCommand.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -404,7 +404,7 @@
                 {
                     Id = "KUNST1", Name = "KUNST1",
                     Location = new Point2D(12345.56789, 9876.54321),
-                    StructureNormalOrientation = 10.0,
+                    StructureNormalOrientation = (RoundedDouble) 10.0,
                     LevelCrestStructure =
                     {
                         Mean = (RoundedDouble) 4.95,
@@ -473,7 +473,7 @@
                         Mean = (RoundedDouble) 0.2,
                         StandardDeviation = (RoundedDouble) 0.1
                     },
-                    StructureNormalOrientation = 10.0,
+                    StructureNormalOrientation = (RoundedDouble) 10.0,
                     WidthFlowApertures =
                     {
                         Mean = (RoundedDouble) 21,
@@ -588,7 +588,7 @@
                 new StabilityPointStructure.ConstructionProperties
                 {
                     Name = "Kunstwerk", Id = "Kunstwerk id", Location = new Point2D(131470.777221421, 548329.82912364),
-                    StructureNormalOrientation = 10,
+                    StructureNormalOrientation = (RoundedDouble) 10,
                     StorageStructureArea =
                     {
                         Mean = (RoundedDouble) 20000,
Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs
===================================================================
diff -u -rbdb4f3a790928e7f4046703414a6ab131d5c03e7 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs	(.../ClosingStructure.cs)	(revision bdb4f3a790928e7f4046703414a6ab131d5c03e7)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs	(.../ClosingStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -239,8 +239,6 @@
                 IdenticalApertures = 1;
                 FailureProbabilityReparation = 1;
                 InflowModelType = ClosingStructureInflowModelType.VerticalWall;
-
-                StructureNormalOrientation = double.NaN;
             }
 
             /// <summary>
Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs
===================================================================
diff -u -r006e2461c3c2f32451e7f8715e3cece92230a27a -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs	(.../ClosingStructuresImporter.cs)	(revision 006e2461c3c2f32451e7f8715e3cece92230a27a)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/ClosingStructuresImporter.cs	(.../ClosingStructuresImporter.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -118,7 +118,7 @@
                                        rowData,
                                        StructureFilesKeywords.ClosingStructureParameterKeyword2);
 
-            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = rows[key].NumericalValue,
+            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = (RoundedDouble) rows[key].NumericalValue,
                                        constructionProperties,
                                        rowData,
                                        StructureFilesKeywords.ClosingStructureParameterKeyword3);
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructureTest.cs
===================================================================
diff -u -rbdb4f3a790928e7f4046703414a6ab131d5c03e7 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructureTest.cs	(.../ClosingStructureTest.cs)	(revision bdb4f3a790928e7f4046703414a6ab131d5c03e7)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructureTest.cs	(.../ClosingStructureTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -54,7 +54,7 @@
                         Mean = (RoundedDouble) 234.567,
                         StandardDeviation = (RoundedDouble) 0.234
                     },
-                    StructureNormalOrientation = 345.678,
+                    StructureNormalOrientation = (RoundedDouble) 345.678,
                     WidthFlowApertures =
                     {
                         Mean = (RoundedDouble) 456.789,
@@ -104,7 +104,6 @@
             Assert.AreEqual(location.X, structure.Location.X);
             Assert.AreEqual(location.Y, structure.Location.Y);
 
-            Assert.AreEqual(2, structure.StructureNormalOrientation.NumberOfDecimalPlaces);
             Assert.AreEqual(345.68, structure.StructureNormalOrientation, structure.StructureNormalOrientation.GetAccuracy());
 
             VariationCoefficientLogNormalDistribution storageStructureArea = structure.StorageStructureArea;
@@ -191,8 +190,7 @@
             Assert.AreEqual(location.X, structure.Location.X);
             Assert.AreEqual(location.Y, structure.Location.Y);
 
-            Assert.AreEqual(2, structure.StructureNormalOrientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(double.NaN, structure.StructureNormalOrientation, structure.StructureNormalOrientation.GetAccuracy());
+            Assert.IsNaN(structure.StructureNormalOrientation);
 
             VariationCoefficientLogNormalDistribution storageStructureArea = structure.StorageStructureArea;
             Assert.AreEqual(2, storageStructureArea.Mean.NumberOfDecimalPlaces);
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil/TestClosingStructure.cs
===================================================================
diff -u -r85d3615793ddf3f8f72eb02409a23286396f5cf1 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil/TestClosingStructure.cs	(.../TestClosingStructure.cs)	(revision 85d3615793ddf3f8f72eb02409a23286396f5cf1)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil/TestClosingStructure.cs	(.../TestClosingStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -77,7 +77,7 @@
                     Mean = (RoundedDouble) 0.2,
                     StandardDeviation = (RoundedDouble) 0.1
                 },
-                StructureNormalOrientation = 10.0,
+                StructureNormalOrientation = (RoundedDouble) 10.0,
                 WidthFlowApertures =
                 {
                     Mean = (RoundedDouble) 21,
Index: Ringtoets/Common/src/Ringtoets.Common.Data/StructureBase.cs
===================================================================
diff -u -r589249bddd12bd66da39205d408ff6e907220116 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/src/Ringtoets.Common.Data/StructureBase.cs	(.../StructureBase.cs)	(revision 589249bddd12bd66da39205d408ff6e907220116)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/StructureBase.cs	(.../StructureBase.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -56,32 +56,13 @@
             Name = constructionProperties.Name;
             Id = constructionProperties.Id;
             Location = constructionProperties.Location;
-            StructureNormalOrientation = new RoundedDouble(2, constructionProperties.StructureNormalOrientation);
+            StructureNormalOrientation = constructionProperties.StructureNormalOrientation;
         }
 
         /// <summary>
-        /// Creates a new instance of <see cref="StructureBase"/>.
-        /// </summary>
-        /// <param name="name">The name of the structure.</param>
-        /// <param name="id">The identifier of the structure.</param>
-        /// <param name="location">The location of the structure.</param>
-        /// <param name="structureNormalOrientation">The orientation of the structure, relative to north.</param>
-        /// <exception cref="ArgumentException">Thrown when <paramref name="name"/> or <paramref name="id"/> is <c>null</c>
-        /// , empty or consists of whitespace.</exception>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="location"/> is <c>null</c>.</exception>
-        protected StructureBase(string name, string id, Point2D location, double structureNormalOrientation) :
-            this(new ConstructionProperties
-            {
-                Name = name,
-                Id = id,
-                Location = location,
-                StructureNormalOrientation = (RoundedDouble) structureNormalOrientation
-            }) {}
-
-        /// <summary>
         /// Gets the name of the structure.
         /// </summary>
-        public string Name { get; private set; }
+        public string Name { get; }
 
         /// <summary>
         /// Gets the identifier of the structure.
@@ -109,6 +90,13 @@
         /// </summary>
         public class ConstructionProperties
         {
+            private RoundedDouble structureNormalOrientation;
+
+            public ConstructionProperties()
+            {
+                structureNormalOrientation = new RoundedDouble(2, double.NaN);
+            }
+
             /// <summary>
             /// Gets or sets the name of the structure.
             /// </summary>
@@ -128,7 +116,17 @@
             /// Gets or sets the orientation of the closing structure, relative to north.
             /// [degrees]
             /// </summary>
-            public double StructureNormalOrientation { internal get; set; }
+            public RoundedDouble StructureNormalOrientation
+            {
+                internal get
+                {
+                    return structureNormalOrientation;
+                }
+                set
+                {
+                    structureNormalOrientation = value.ToPrecision(structureNormalOrientation.NumberOfDecimalPlaces);
+                }
+            }
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/StructureBaseTest.cs
===================================================================
diff -u -r3e3087bd9c43ca5a3910438b3c9daf0defcb09bf -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/StructureBaseTest.cs	(.../StructureBaseTest.cs)	(revision 3e3087bd9c43ca5a3910438b3c9daf0defcb09bf)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/StructureBaseTest.cs	(.../StructureBaseTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Common.TestUtil;
 using NUnit.Framework;
@@ -90,9 +91,40 @@
                             structure.StructureNormalOrientation.GetAccuracy());
         }
 
+        [Test]
+        public void Constructor_DefaultValues_ExpectedValues()
+        {
+            // Setup
+            var location = new Point2D(1.22, 2.333);
+
+            // Call
+            var structure = new TestStructure("aName", "anId", location);
+
+            // Assert
+            Assert.AreEqual("aName", structure.Name);
+            Assert.AreEqual("anId", structure.Id);
+            Assert.AreEqual(location.X, structure.Location.X);
+            Assert.AreEqual(location.Y, structure.Location.Y);
+            Assert.AreEqual("aName", structure.ToString());
+            Assert.AreEqual(2, structure.StructureNormalOrientation.NumberOfDecimalPlaces);
+            Assert.IsNaN(structure.StructureNormalOrientation);
+        }
+
         private class TestStructure : StructureBase
         {
-            public TestStructure(string name, string id, Point2D location, double normal) : base(name, id, location, normal) {}
+            public TestStructure(string name, string id, Point2D location) : base(new ConstructionProperties
+            {
+                Name = name,
+                Id = id,
+                Location = location
+            }) { }
+
+            public TestStructure(string name, string id, Point2D location, double normal) : base(new ConstructionProperties
+            {
+                Name = name,
+                Id = id,
+                Location = location,
+                StructureNormalOrientation = (RoundedDouble) normal}) {}
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs
===================================================================
diff -u -r5a28016b2c6566fbb91341bcc06d9f2dff927384 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs	(.../StructuresInputBasePropertiesTest.cs)	(revision 5a28016b2c6566fbb91341bcc06d9f2dff927384)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/StructuresInputBasePropertiesTest.cs	(.../StructuresInputBasePropertiesTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -1118,9 +1118,15 @@
 
         private class SimpleStructure : StructureBase
         {
-            public SimpleStructure() : base("Name", "Id", new Point2D(0, 0), 0.0) {}
+            public SimpleStructure() : this(new Point2D(0, 0)) {}
 
-            public SimpleStructure(Point2D location) : base("Name", "Id", location, 0.0) {}
+            public SimpleStructure(Point2D location) : base(new ConstructionProperties
+            {
+                Name = "Name",
+                Id = "Id",
+                Location = location,
+                StructureNormalOrientation = (RoundedDouble) 0
+            }) {}
         }
 
         private class SimpleStructureInput : StructuresInputBase<SimpleStructure>
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/StructureSelectionDialogTest.cs
===================================================================
diff -u -r8905298103eb01ce13dd5c1a2f267f879d4fda3e -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/StructureSelectionDialogTest.cs	(.../StructureSelectionDialogTest.cs)	(revision 8905298103eb01ce13dd5c1a2f267f879d4fda3e)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/StructureSelectionDialogTest.cs	(.../StructureSelectionDialogTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -22,6 +22,7 @@
 using System;
 using System.Linq;
 using System.Windows.Forms;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Common.Controls.DataGrid;
 using NUnit.Extensions.Forms;
@@ -117,7 +118,7 @@
                 Name = testname,
                 Id = "anId",
                 Location = new Point2D(0, 0),
-                StructureNormalOrientation = 0.0
+                StructureNormalOrientation = (RoundedDouble) 0.0
             };
             var structure = new TestStructure(constructionProperties);
 
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/UITypeEditors/StructureEditorTest.cs
===================================================================
diff -u -rc94cb1b5a316ba340decc1afe0e6be1afb49cde1 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/UITypeEditors/StructureEditorTest.cs	(.../StructureEditorTest.cs)	(revision c94cb1b5a316ba340decc1afe0e6be1afb49cde1)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/UITypeEditors/StructureEditorTest.cs	(.../StructureEditorTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Windows.Forms.Design;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Common.Gui.PropertyBag;
 using Core.Common.Gui.UITypeEditors;
@@ -71,7 +72,7 @@
             mockRepository.ReplayAll();
 
             // Call
-            var result = editor.EditValue(descriptorContextStub, serviceProviderStub, someValue);
+            object result = editor.EditValue(descriptorContextStub, serviceProviderStub, someValue);
 
             // Assert
             Assert.AreSame(someValue, result);
@@ -98,7 +99,7 @@
             mockRepository.ReplayAll();
 
             // Call
-            var result = editor.EditValue(descriptorContextStub, serviceProviderStub, someValue);
+            object result = editor.EditValue(descriptorContextStub, serviceProviderStub, someValue);
 
             // Assert
             Assert.AreSame(simpleStructure, result);
@@ -107,29 +108,28 @@
 
         private class SimpleStructure : StructureBase
         {
-            public SimpleStructure() : base("Name", "Id", new Point2D(0, 0), 0.0) {}
+            public SimpleStructure() : base(new ConstructionProperties
+            {
+                Name = "Name",
+                Id = "Id",
+                Location = new Point2D(0, 0),
+                StructureNormalOrientation = (RoundedDouble) 0
+            }) {}
         }
 
         private class ObjectPropertiesWithStructure : IHasStructureProperty<SimpleStructure>
         {
-            private readonly SimpleStructure structure;
             private readonly IEnumerable<SimpleStructure> availableStructures;
 
             public ObjectPropertiesWithStructure(SimpleStructure structure, IEnumerable<SimpleStructure> availableStructures)
             {
-                this.structure = structure;
+                this.Structure = structure;
                 this.availableStructures = availableStructures;
             }
 
             public object Data { get; set; }
 
-            public SimpleStructure Structure
-            {
-                get
-                {
-                    return structure;
-                }
-            }
+            public SimpleStructure Structure { get; }
 
             public IEnumerable<SimpleStructure> GetAvailableStructures()
             {
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/Import/CalculationConfigurationImporterTest.cs
===================================================================
diff -u -r65c74eaad22b576971bae588c9793d76950b8cad -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/Import/CalculationConfigurationImporterTest.cs	(.../CalculationConfigurationImporterTest.cs)	(revision 65c74eaad22b576971bae588c9793d76950b8cad)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/Configurations/Import/CalculationConfigurationImporterTest.cs	(.../CalculationConfigurationImporterTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -867,7 +867,13 @@
 
         private class TestStructure : StructureBase
         {
-            public TestStructure(string name) : base(name, "id", new Point2D(0, 0), 2) { }
+            public TestStructure(string name) : base(new ConstructionProperties
+            {
+                Name = name,
+                Id = "Id",
+                Location = new Point2D(0, 0),
+                StructureNormalOrientation = (RoundedDouble) 2
+            }) { }
         }
 
         private class TestInputWithForeshoreProfileAndBreakWater : Observable, IUseBreakWater, IUseForeshore
Index: Ringtoets/Common/test/Ringtoets.Common.Utils.Test/StructuresHelperTest.cs
===================================================================
diff -u -r2a896243ca24205f8e98db1b61e8148d1d9b9062 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/Common/test/Ringtoets.Common.Utils.Test/StructuresHelperTest.cs	(.../StructuresHelperTest.cs)	(revision 2a896243ca24205f8e98db1b61e8148d1d9b9062)
+++ Ringtoets/Common/test/Ringtoets.Common.Utils.Test/StructuresHelperTest.cs	(.../StructuresHelperTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -22,6 +22,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Common.TestUtil;
 using NUnit.Framework;
@@ -277,7 +278,13 @@
 
         private class TestStructure : StructureBase
         {
-            public TestStructure(string name, string id, Point2D location, double normal) : base(name, id, location, normal) {}
+            public TestStructure(string name, string id, Point2D location, double normal) : base(new ConstructionProperties
+            {
+                Name = name,
+                Id = id,
+                Location = location,
+                StructureNormalOrientation = (RoundedDouble) normal
+            }) {}
         }
 
         #endregion
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructure.cs
===================================================================
diff -u -r6bb7d994986cbe36a45ae72e9f28921f7d75d473 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructure.cs	(.../HeightStructure.cs)	(revision 6bb7d994986cbe36a45ae72e9f28921f7d75d473)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructure.cs	(.../HeightStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -158,8 +158,6 @@
                 };
 
                 FailureProbabilityStructureWithErosion = 1.0;
-
-                StructureNormalOrientation = double.NaN;
             }
 
             /// <summary>
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.IO/HeightStructuresImporter.cs
===================================================================
diff -u -r006e2461c3c2f32451e7f8715e3cece92230a27a -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.IO/HeightStructuresImporter.cs	(.../HeightStructuresImporter.cs)	(revision 006e2461c3c2f32451e7f8715e3cece92230a27a)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.IO/HeightStructuresImporter.cs	(.../HeightStructuresImporter.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -103,7 +103,7 @@
                 Location = structureLocation.Point
             };
 
-            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = rows[key].NumericalValue,
+            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = (RoundedDouble) rows[key].NumericalValue,
                                        constructionProperties,
                                        rowData,
                                        StructureFilesKeywords.HeightStructureParameterKeyword1);
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructureTest.cs
===================================================================
diff -u -r6bb7d994986cbe36a45ae72e9f28921f7d75d473 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructureTest.cs	(.../HeightStructureTest.cs)	(revision 6bb7d994986cbe36a45ae72e9f28921f7d75d473)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructureTest.cs	(.../HeightStructureTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -41,7 +41,7 @@
                 new HeightStructure.ConstructionProperties
                 {
                     Name = "aName", Id = "anId", Location = location,
-                    StructureNormalOrientation = 0.12345,
+                    StructureNormalOrientation = (RoundedDouble) 0.12345,
                     LevelCrestStructure =
                     {
                         Mean = (RoundedDouble) 234.567,
@@ -149,9 +149,7 @@
             Assert.AreEqual(location.X, heightStructure.Location.X);
             Assert.AreEqual(location.Y, heightStructure.Location.Y);
 
-            Assert.IsInstanceOf<RoundedDouble>(heightStructure.StructureNormalOrientation);
-            Assert.AreEqual(2, heightStructure.StructureNormalOrientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(double.NaN, heightStructure.StructureNormalOrientation.Value);
+            Assert.IsNaN(heightStructure.StructureNormalOrientation);
 
             NormalDistribution levelCrestStructure = heightStructure.LevelCrestStructure;
             Assert.AreEqual(2, levelCrestStructure.Mean.NumberOfDecimalPlaces);
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil/TestHeightStructure.cs
===================================================================
diff -u -rbe64b9f33b3065a4d80c0a93c1cafe3d74f43513 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil/TestHeightStructure.cs	(.../TestHeightStructure.cs)	(revision be64b9f33b3065a4d80c0a93c1cafe3d74f43513)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.TestUtil/TestHeightStructure.cs	(.../TestHeightStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -60,7 +60,7 @@
                 Name = name,
                 Id = "Id",
                 Location = location,
-                StructureNormalOrientation = 0.12345,
+                StructureNormalOrientation = (RoundedDouble) 0.12345,
                 LevelCrestStructure =
                 {
                     Mean = (RoundedDouble) 234.567,
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructure.cs
===================================================================
diff -u -r6ced2c3bd4adaef7cf2363ba75a84911b09c3924 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructure.cs	(.../StabilityPointStructure.cs)	(revision 6ced2c3bd4adaef7cf2363ba75a84911b09c3924)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.Data/StabilityPointStructure.cs	(.../StabilityPointStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -303,92 +303,173 @@
             /// </summary>
             public ConstructionProperties()
             {
-                StorageStructureArea = new VariationCoefficientLogNormalDistribution(2);
-                AllowedLevelIncreaseStorage = new LogNormalDistribution(2);
-                WidthFlowApertures = new NormalDistribution(2);
-                InsideWaterLevel = new NormalDistribution(2);
-                ThresholdHeightOpenWeir = new NormalDistribution(2);
-                CriticalOvertoppingDischarge = new VariationCoefficientLogNormalDistribution(2);
-                FlowWidthAtBottomProtection = new LogNormalDistribution(2);
-                ConstructiveStrengthLinearLoadModel = new VariationCoefficientLogNormalDistribution(2);
-                ConstructiveStrengthQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2);
-                BankWidth = new NormalDistribution(2);
-                InsideWaterLevelFailureConstruction = new NormalDistribution(2);
-                LevelCrestStructure = new NormalDistribution(2);
-                FailureCollisionEnergy = new VariationCoefficientLogNormalDistribution(2);
-                ShipMass = new VariationCoefficientNormalDistribution(2);
-                ShipVelocity = new VariationCoefficientNormalDistribution(2);
-                FlowVelocityStructureClosable = new VariationCoefficientNormalDistribution(2);
-                StabilityLinearLoadModel = new VariationCoefficientLogNormalDistribution(2);
-                StabilityQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2);
-                AreaFlowApertures = new LogNormalDistribution(2);
+                StorageStructureArea = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.1
+                };
+                AllowedLevelIncreaseStorage = new LogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.1
+                };
+                WidthFlowApertures = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.2
+                };
+                InsideWaterLevel = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.1
+                };
+                ThresholdHeightOpenWeir = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.1
+                };
+                CriticalOvertoppingDischarge = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.15
+                };
+                FlowWidthAtBottomProtection = new LogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.05
+                };
+                ConstructiveStrengthLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.1
+                };
+                ConstructiveStrengthQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.1
+                };
+                BankWidth = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = RoundedDouble.NaN
+                };
+                InsideWaterLevelFailureConstruction = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.1
+                };
+                LevelCrestStructure = new NormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.05
+                };
+                VerticalDistance = double.NaN;
+                FailureProbabilityRepairClosure = 1;
+                FailureCollisionEnergy = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.3
+                };
+                ShipMass = new VariationCoefficientNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.2
+                };
+                ShipVelocity = new VariationCoefficientNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.2
+                };
+                LevellingCount = 1;
+                ProbabilityCollisionSecondaryStructure = 1;
+                FlowVelocityStructureClosable = new VariationCoefficientNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.2
+                };
+                StabilityLinearLoadModel = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.1
+                };
+                StabilityQuadraticLoadModel = new VariationCoefficientLogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    CoefficientOfVariation = (RoundedDouble) 0.1
+                };
+                AreaFlowApertures = new LogNormalDistribution(2)
+                {
+                    Mean = RoundedDouble.NaN,
+                    StandardDeviation = (RoundedDouble) 0.01
+                };
+                InflowModelType = StabilityPointStructureInflowModelType.LowSill;
             }
 
             /// <summary>
             /// Gets the storage area of the stability point structure.
             /// [m^2]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution StorageStructureArea { get; private set; }
+            public VariationCoefficientLogNormalDistribution StorageStructureArea { get; }
 
             /// <summary>
             /// Gets the allowed increase of level for storage of the stability point structure.
             /// [m]
             /// </summary>
-            public LogNormalDistribution AllowedLevelIncreaseStorage { get; private set; }
+            public LogNormalDistribution AllowedLevelIncreaseStorage { get; }
 
             /// <summary>
             /// Gets the width of the flow apertures of the stability point structure.
             /// [m]
             /// </summary>
-            public NormalDistribution WidthFlowApertures { get; private set; }
+            public NormalDistribution WidthFlowApertures { get; }
 
             /// <summary>
             /// Gets the interior water level of the stability point structure.
             /// [m+NAP]
             /// </summary>
-            public NormalDistribution InsideWaterLevel { get; private set; }
+            public NormalDistribution InsideWaterLevel { get; }
 
             /// <summary>
             /// Gets the threshold height of the opened stability point structure.
             /// [m+NAP]
             /// </summary>
-            public NormalDistribution ThresholdHeightOpenWeir { get; private set; }
+            public NormalDistribution ThresholdHeightOpenWeir { get; }
 
             /// <summary>
             /// Gets the critical overtopping discharge per meter of the stability point structure.
             /// [m^3/s/m]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution CriticalOvertoppingDischarge { get; private set; }
+            public VariationCoefficientLogNormalDistribution CriticalOvertoppingDischarge { get; }
 
             /// <summary>
             /// Gets the flow width of the stability point structure at the bottom protection.
             /// [m]
             /// </summary>
-            public LogNormalDistribution FlowWidthAtBottomProtection { get; private set; }
+            public LogNormalDistribution FlowWidthAtBottomProtection { get; }
 
             /// <summary>
             /// Gets the constructive strength of the linear load model of the stability point structure.
             /// [kN/m^2]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution ConstructiveStrengthLinearLoadModel { get; private set; }
+            public VariationCoefficientLogNormalDistribution ConstructiveStrengthLinearLoadModel { get; }
 
             /// <summary>
             /// Gets the constructive strength of the quadratic load model of the stability point structure.
             /// [kN/m]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution ConstructiveStrengthQuadraticLoadModel { get; private set; }
+            public VariationCoefficientLogNormalDistribution ConstructiveStrengthQuadraticLoadModel { get; }
 
             /// <summary>
             /// Gets the bank width of the stability point structure.
             /// [m]
             /// </summary>
-            public NormalDistribution BankWidth { get; private set; }
+            public NormalDistribution BankWidth { get; }
 
             /// <summary>
             /// Gets the inside water level failure construction of the stability point structure.
             /// [m+NAP]
             /// </summary>
-            public NormalDistribution InsideWaterLevelFailureConstruction { get; private set; }
+            public NormalDistribution InsideWaterLevelFailureConstruction { get; }
 
             /// <summary>
             /// Gets or sets the evaluation level of the stability point structure.
@@ -400,7 +481,7 @@
             /// Gets the crest level of the stability point structure.
             /// [m+NAP]
             /// </summary>
-            public NormalDistribution LevelCrestStructure { get; private set; }
+            public NormalDistribution LevelCrestStructure { get; }
 
             /// <summary>
             /// Gets or sets the vertical distance of the stability point structure.
@@ -418,19 +499,19 @@
             /// Gets the failure collision energy of the stability point structure.
             /// [kN m]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution FailureCollisionEnergy { get; private set; }
+            public VariationCoefficientLogNormalDistribution FailureCollisionEnergy { get; }
 
             /// <summary>
             /// Gets the mass of the ship.
             /// [ton]
             /// </summary>
-            public VariationCoefficientNormalDistribution ShipMass { get; private set; }
+            public VariationCoefficientNormalDistribution ShipMass { get; }
 
             /// <summary>
             /// Gets the velocity of the ship.
             /// [m/s]
             /// </summary>
-            public VariationCoefficientNormalDistribution ShipVelocity { get; private set; }
+            public VariationCoefficientNormalDistribution ShipVelocity { get; }
 
             /// <summary>
             /// Gets or sets the levelling count.
@@ -448,25 +529,25 @@
             /// Gets the maximum flow velocity at which the structure is closable.
             /// [m/s]
             /// </summary>
-            public VariationCoefficientNormalDistribution FlowVelocityStructureClosable { get; private set; }
+            public VariationCoefficientNormalDistribution FlowVelocityStructureClosable { get; }
 
             /// <summary>
             /// Gets the stability properties of the linear load model of the stability point structure.
             /// [kN/m^2]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution StabilityLinearLoadModel { get; private set; }
+            public VariationCoefficientLogNormalDistribution StabilityLinearLoadModel { get; }
 
             /// <summary>
             /// Gets the stability properties of the quadratic load model of the stability point structure.
             /// [kN/m]
             /// </summary>
-            public VariationCoefficientLogNormalDistribution StabilityQuadraticLoadModel { get; private set; }
+            public VariationCoefficientLogNormalDistribution StabilityQuadraticLoadModel { get; }
 
             /// <summary>
             /// Gets the area of the flow aperture of the stability point structure.
             /// [m^2]
             /// </summary>
-            public LogNormalDistribution AreaFlowApertures { get; private set; }
+            public LogNormalDistribution AreaFlowApertures { get; }
 
             /// <summary>
             /// Gets or sets the type of stability point structure inflow model.
Index: Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs
===================================================================
diff -u -rbdba242bf394db36636077b0652e46f32f9c9e7b -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs	(.../StabilityPointStructuresImporter.cs)	(revision bdba242bf394db36636077b0652e46f32f9c9e7b)
+++ Ringtoets/StabilityPointStructures/src/Ringtoets.StabilityPointStructures.IO/StabilityPointStructuresImporter.cs	(.../StabilityPointStructuresImporter.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -100,7 +100,7 @@
                 Location = structureLocation.Point,
             };
 
-            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = rows[key].NumericalValue,
+            TrySetConstructionProperty((properties, rows, key) => properties.StructureNormalOrientation = (RoundedDouble) rows[key].NumericalValue,
                                        constructionProperties,
                                        rowData,
                                        StructureFilesKeywords.StabilityPointStructureParameterKeyword1);
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs
===================================================================
diff -u -r6ced2c3bd4adaef7cf2363ba75a84911b09c3924 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs	(.../StabilityPointStructureTest.cs)	(revision 6ced2c3bd4adaef7cf2363ba75a84911b09c3924)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs	(.../StabilityPointStructureTest.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -34,15 +34,14 @@
         [Test]
         public void Constructor_ValidData_ExpectedValues()
         {
-            // Setup
-            var location = new Point2D(1.22, 2.333);
-
             // Call
             var structure = new StabilityPointStructure(
                 new StabilityPointStructure.ConstructionProperties
                 {
-                    Name = "aName", Id = "anId", Location = location,
-                    StructureNormalOrientation = 123.456,
+                    Name = "aName",
+                    Id = "anId",
+                    Location = new Point2D(1.22, 2.333),
+                    StructureNormalOrientation = (RoundedDouble) 123.456,
                     StorageStructureArea =
                     {
                         Mean = (RoundedDouble) 234.567,
@@ -279,5 +278,153 @@
 
             Assert.AreEqual(StabilityPointStructureInflowModelType.FloodedCulvert, structure.InflowModelType);
         }
+
+        [Test]
+        public void Constructor_DefaultData_ExpectedValues()
+        {
+            // Call
+            var structure = new StabilityPointStructure(
+                new StabilityPointStructure.ConstructionProperties
+                {
+                    Name = "aName",
+                    Id = "anId",
+                    Location = new Point2D(1.22, 2.333)
+                });
+
+            // Assert
+            Assert.IsInstanceOf<StructureBase>(structure);
+
+            Assert.IsNaN(structure.StructureNormalOrientation);
+
+            VariationCoefficientLogNormalDistribution storageStructureArea = structure.StorageStructureArea;
+            Assert.AreEqual(2, storageStructureArea.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(storageStructureArea.Mean);
+            Assert.AreEqual(2, storageStructureArea.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, storageStructureArea.CoefficientOfVariation, storageStructureArea.CoefficientOfVariation.GetAccuracy());
+
+            LogNormalDistribution allowedLevelIncreaseStorage = structure.AllowedLevelIncreaseStorage;
+            Assert.AreEqual(2, allowedLevelIncreaseStorage.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(allowedLevelIncreaseStorage.Mean);
+            Assert.AreEqual(2, allowedLevelIncreaseStorage.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, allowedLevelIncreaseStorage.StandardDeviation, allowedLevelIncreaseStorage.StandardDeviation.GetAccuracy());
+
+            NormalDistribution widthFlowApertures = structure.WidthFlowApertures;
+            Assert.AreEqual(2, widthFlowApertures.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(widthFlowApertures.Mean);
+            Assert.AreEqual(2, widthFlowApertures.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.2, widthFlowApertures.StandardDeviation, widthFlowApertures.StandardDeviation.GetAccuracy());
+
+            NormalDistribution insideWaterLevel = structure.InsideWaterLevel;
+            Assert.AreEqual(2, insideWaterLevel.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(insideWaterLevel.Mean);
+            Assert.AreEqual(2, insideWaterLevel.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, insideWaterLevel.StandardDeviation, insideWaterLevel.StandardDeviation.GetAccuracy());
+
+            NormalDistribution thresholdHeightOpenWeir = structure.ThresholdHeightOpenWeir;
+            Assert.AreEqual(2, thresholdHeightOpenWeir.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(thresholdHeightOpenWeir.Mean);
+            Assert.AreEqual(2, thresholdHeightOpenWeir.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, thresholdHeightOpenWeir.StandardDeviation, thresholdHeightOpenWeir.StandardDeviation.GetAccuracy());
+
+            VariationCoefficientLogNormalDistribution criticalOvertoppingDischarge = structure.CriticalOvertoppingDischarge;
+            Assert.AreEqual(2, criticalOvertoppingDischarge.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(criticalOvertoppingDischarge.Mean);
+            Assert.AreEqual(2, criticalOvertoppingDischarge.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.15, criticalOvertoppingDischarge.CoefficientOfVariation, criticalOvertoppingDischarge.CoefficientOfVariation.GetAccuracy());
+
+            LogNormalDistribution flowWidthAtBottomProtection = structure.FlowWidthAtBottomProtection;
+            Assert.AreEqual(2, flowWidthAtBottomProtection.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(flowWidthAtBottomProtection.Mean);
+            Assert.AreEqual(2, flowWidthAtBottomProtection.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.05, flowWidthAtBottomProtection.StandardDeviation, flowWidthAtBottomProtection.StandardDeviation.GetAccuracy());
+
+            VariationCoefficientLogNormalDistribution constructiveStrengthLinearLoadModel = structure.ConstructiveStrengthLinearLoadModel;
+            Assert.AreEqual(2, constructiveStrengthLinearLoadModel.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(constructiveStrengthLinearLoadModel.Mean);
+            Assert.AreEqual(2, constructiveStrengthLinearLoadModel.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, constructiveStrengthLinearLoadModel.CoefficientOfVariation, constructiveStrengthLinearLoadModel.CoefficientOfVariation.GetAccuracy());
+
+            VariationCoefficientLogNormalDistribution constructiveStrengthQuadraticLoadModel = structure.ConstructiveStrengthQuadraticLoadModel;
+            Assert.AreEqual(2, constructiveStrengthQuadraticLoadModel.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(constructiveStrengthQuadraticLoadModel.Mean);
+            Assert.AreEqual(2, constructiveStrengthQuadraticLoadModel.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, constructiveStrengthQuadraticLoadModel.CoefficientOfVariation, constructiveStrengthQuadraticLoadModel.CoefficientOfVariation.GetAccuracy());
+
+            NormalDistribution bankWidth = structure.BankWidth;
+            Assert.AreEqual(2, bankWidth.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(bankWidth.Mean);
+            Assert.AreEqual(2, bankWidth.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.IsNaN(bankWidth.StandardDeviation);
+
+            NormalDistribution insideWaterLevelFailureConstruction = structure.InsideWaterLevelFailureConstruction;
+            Assert.AreEqual(2, insideWaterLevelFailureConstruction.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(insideWaterLevelFailureConstruction.Mean);
+            Assert.AreEqual(2, insideWaterLevelFailureConstruction.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, insideWaterLevelFailureConstruction.StandardDeviation, insideWaterLevelFailureConstruction.StandardDeviation.GetAccuracy());
+
+            Assert.IsInstanceOf<RoundedDouble>(structure.EvaluationLevel);
+            Assert.AreEqual(2, structure.EvaluationLevel.NumberOfDecimalPlaces);
+            Assert.AreEqual(0, structure.EvaluationLevel, structure.EvaluationLevel.GetAccuracy());
+
+            NormalDistribution levelCrestStructure = structure.LevelCrestStructure;
+            Assert.AreEqual(2, levelCrestStructure.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(levelCrestStructure.Mean);
+            Assert.AreEqual(2, levelCrestStructure.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.05, levelCrestStructure.StandardDeviation, levelCrestStructure.StandardDeviation.GetAccuracy());
+
+            Assert.IsInstanceOf<RoundedDouble>(structure.VerticalDistance);
+            Assert.AreEqual(2, structure.VerticalDistance.NumberOfDecimalPlaces);
+            Assert.IsNaN(structure.VerticalDistance);
+
+            Assert.AreEqual(1, structure.FailureProbabilityRepairClosure);
+
+            VariationCoefficientLogNormalDistribution failureCollisionEnergy = structure.FailureCollisionEnergy;
+            Assert.AreEqual(2, failureCollisionEnergy.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(failureCollisionEnergy.Mean);
+            Assert.AreEqual(2, failureCollisionEnergy.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.3, failureCollisionEnergy.CoefficientOfVariation, failureCollisionEnergy.CoefficientOfVariation.GetAccuracy());
+
+            VariationCoefficientNormalDistribution shipMass = structure.ShipMass;
+            Assert.AreEqual(2, shipMass.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(shipMass.Mean);
+            Assert.AreEqual(2, shipMass.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.2, shipMass.CoefficientOfVariation, shipMass.CoefficientOfVariation.GetAccuracy());
+
+            VariationCoefficientNormalDistribution shipVelocity = structure.ShipVelocity;
+            Assert.AreEqual(2, shipVelocity.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(shipVelocity.Mean);
+            Assert.AreEqual(2, shipVelocity.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.2, shipVelocity.CoefficientOfVariation, shipVelocity.CoefficientOfVariation.GetAccuracy());
+
+            Assert.AreEqual(1, structure.LevellingCount);
+
+            Assert.AreEqual(1, structure.ProbabilityCollisionSecondaryStructure);
+
+            VariationCoefficientNormalDistribution flowVelocityStructureClosable = structure.FlowVelocityStructureClosable;
+            Assert.AreEqual(2, flowVelocityStructureClosable.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(flowVelocityStructureClosable.Mean);
+            Assert.AreEqual(2, flowVelocityStructureClosable.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.2, flowVelocityStructureClosable.CoefficientOfVariation, flowVelocityStructureClosable.CoefficientOfVariation.GetAccuracy());
+
+            VariationCoefficientLogNormalDistribution stabilityLinearLoadModel = structure.StabilityLinearLoadModel;
+            Assert.AreEqual(2, stabilityLinearLoadModel.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(stabilityLinearLoadModel.Mean);
+            Assert.AreEqual(2, stabilityLinearLoadModel.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, stabilityLinearLoadModel.CoefficientOfVariation, stabilityLinearLoadModel.CoefficientOfVariation.GetAccuracy());
+
+            VariationCoefficientLogNormalDistribution stabilityQuadraticLoadModel = structure.StabilityQuadraticLoadModel;
+            Assert.AreEqual(2, stabilityQuadraticLoadModel.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(stabilityQuadraticLoadModel.Mean);
+            Assert.AreEqual(2, stabilityQuadraticLoadModel.CoefficientOfVariation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.1, stabilityQuadraticLoadModel.CoefficientOfVariation, stabilityQuadraticLoadModel.CoefficientOfVariation.GetAccuracy());
+
+            LogNormalDistribution areaFlowApertures = structure.AreaFlowApertures;
+            Assert.AreEqual(2, areaFlowApertures.Mean.NumberOfDecimalPlaces);
+            Assert.IsNaN(areaFlowApertures.Mean);
+            Assert.AreEqual(2, areaFlowApertures.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.01, areaFlowApertures.StandardDeviation, areaFlowApertures.StandardDeviation.GetAccuracy());
+
+            Assert.AreEqual(StabilityPointStructureInflowModelType.LowSill, structure.InflowModelType);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/TestStabilityPointStructure.cs
===================================================================
diff -u -r85d3615793ddf3f8f72eb02409a23286396f5cf1 -r6e717246d970bc18500da686a51f82101296ff46
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/TestStabilityPointStructure.cs	(.../TestStabilityPointStructure.cs)	(revision 85d3615793ddf3f8f72eb02409a23286396f5cf1)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.TestUtil/TestStabilityPointStructure.cs	(.../TestStabilityPointStructure.cs)	(revision 6e717246d970bc18500da686a51f82101296ff46)
@@ -57,7 +57,7 @@
                 Name = name,
                 Id = "anId",
                 Location = location,
-                StructureNormalOrientation = 123.456,
+                StructureNormalOrientation = (RoundedDouble) 123.456,
                 StorageStructureArea =
                 {
                     Mean = (RoundedDouble) 234.567,