Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsPreconsolidationStressEntityReadExtensionsTest.cs
===================================================================
diff -u -reae3622163e0c8bdfc32f73eda6f5bd8d3b02484 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsPreconsolidationStressEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsPreconsolidationStressEntityReadExtensionsTest.cs)	(revision eae3622163e0c8bdfc32f73eda6f5bd8d3b02484)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsPreconsolidationStressEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsPreconsolidationStressEntityReadExtensionsTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -61,8 +61,8 @@
 
             // Assert
             Assert.IsNotNull(stress);
-            Assert.AreEqual(entity.CoordinateX, stress.XCoordinate);
-            Assert.AreEqual(entity.CoordinateZ, stress.ZCoordinate);
+            Assert.AreEqual(entity.CoordinateX, stress.XCoordinate, stress.XCoordinate.GetAccuracy());
+            Assert.AreEqual(entity.CoordinateZ, stress.ZCoordinate, stress.ZCoordinate.GetAccuracy());
 
             VariationCoefficientLogNormalDistribution preconsolidationStressDistribution = stress.PreconsolidationStress;
             Assert.AreEqual(entity.PreconsolidationStressMean, preconsolidationStressDistribution.Mean,
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsPreconsolidationStressProperties.cs
===================================================================
diff -u -reae3622163e0c8bdfc32f73eda6f5bd8d3b02484 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsPreconsolidationStressProperties.cs	(.../MacroStabilityInwardsPreconsolidationStressProperties.cs)	(revision eae3622163e0c8bdfc32f73eda6f5bd8d3b02484)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/PropertyClasses/MacroStabilityInwardsPreconsolidationStressProperties.cs	(.../MacroStabilityInwardsPreconsolidationStressProperties.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -61,7 +61,7 @@
         {
             get
             {
-                return new RoundedDouble(2, data.XCoordinate);
+                return data.XCoordinate;
             }
         }
 
@@ -72,7 +72,7 @@
         {
             get
             {
-                return new RoundedDouble(2, data.ZCoordinate);
+                return data.ZCoordinate;
             }
         }
 
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsPreconsolidationStress.cs
===================================================================
diff -u -re64377104810125b438aaf229d489a76debca60d -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsPreconsolidationStress.cs	(.../MacroStabilityInwardsPreconsolidationStress.cs)	(revision e64377104810125b438aaf229d489a76debca60d)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsPreconsolidationStress.cs	(.../MacroStabilityInwardsPreconsolidationStress.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -42,6 +42,11 @@
         /// <param name="preconsolidationStressCoefficientOfVariation">The coefficient of 
         /// variation of the stochastic distribution for the preconsolidation stress.</param>
         /// <exception cref="ArgumentException">Thrown when any of the parameters are <see cref="double.NaN"/>.</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when:
+        /// <list type="bullet">
+        /// <item><paramref name="preconsolidationStressMean"/> is less than or equal to 0.</item>
+        /// <item><paramref name="preconsolidationStressCoefficientOfVariation"/> is less than 0.</item>
+        /// </list></exception>
         public MacroStabilityInwardsPreconsolidationStress(double xCoordinate,
                                                            double zCoordinate,
                                                            double preconsolidationStressMean,
@@ -52,8 +57,8 @@
             ValidateParameter(preconsolidationStressMean, Resources.MacroStabilityInwardsPreconsolidationStress_PreconsolidationStressMean_ParameterName);
             ValidateParameter(preconsolidationStressCoefficientOfVariation, Resources.MacroStabilityInwardsPreconsolidationStress_PreconsolidationStressCoefficientOfVariation_ParameterName);
 
-            XCoordinate = xCoordinate;
-            ZCoordinate = zCoordinate;
+            XCoordinate = new RoundedDouble(2, xCoordinate);
+            ZCoordinate = new RoundedDouble(2, zCoordinate);
 
             PreconsolidationStress = new VariationCoefficientLogNormalDistribution(2)
             {
@@ -66,13 +71,13 @@
         /// Gets the value representing the X coordinate of the preconsolidation stress location.
         /// [m]
         /// </summary>
-        public double XCoordinate { get; }
+        public RoundedDouble XCoordinate { get; }
 
         /// <summary>
         /// Gets the value representing the Z coordinate of the preconsolidation stress location.
         /// [m]
         /// </summary>
-        public double ZCoordinate { get; }
+        public RoundedDouble ZCoordinate { get; }
 
         /// <summary>
         /// Gets the distribution for the preconsolidation stress.
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilUnderSurfaceLine/MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine.cs
===================================================================
diff -u -r388ce371afb320cab772545f0292d1954fdc38ef -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilUnderSurfaceLine/MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine.cs	(.../MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine.cs)	(revision 388ce371afb320cab772545f0292d1954fdc38ef)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilUnderSurfaceLine/MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine.cs	(.../MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -36,6 +36,12 @@
         /// <param name="properties">The object containing the value for the properties of 
         /// the new <see cref="MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine"/>.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="properties"/> is <c>null</c>.</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when:
+        /// <list type="bullet">
+        /// <item><see cref="ConstructionProperties.PreconsolidationStressMean"/> is less than or equal to 0.</item>
+        /// <item><see cref="ConstructionProperties.PreconsolidationStressCoefficientOfVariation"/> is less than 0.</item>
+        /// </list>
+        /// </exception>
         public MacroStabilityInwardsPreconsolidationStressUnderSurfaceLine(ConstructionProperties properties)
         {
             if (properties == null)
@@ -52,30 +58,27 @@
             };
         }
 
-
         /// <summary>
         /// Gets the value representing the X coordinate of the preconsolidation stress location.
         /// [m]
         /// </summary>
         public double XCoordinate { get; }
 
-
         /// <summary>
         /// Gets the value representing the Z coordinate of the preconsolidation stress location.
         /// [m]
         /// </summary>
         public double ZCoordinate { get; }
 
-
         /// <summary>
         /// Gets the preconsolidation stress distribution.
-        /// [kN/m³]
+        /// [kN/m²]
         /// </summary>
         public VariationCoefficientLogNormalDistribution PreconsolidationStress { get; }
 
         /// <summary>
         /// Gets or sets the preconsolidation stress distribution design variable.
-        /// [kN/m³]
+        /// [kN/m²]
         /// </summary>
         public RoundedDouble PreconsolidationStressDesignVariable { get; set; } = RoundedDouble.NaN;
 
@@ -99,13 +102,13 @@
 
             /// <summary>
             /// Gets or sets the mean of the preconsolidation stress distribution.
-            /// [kN/m³]
+            /// [kN/m²]
             /// </summary>
             public double PreconsolidationStressMean { get; set; } = double.NaN;
 
             /// <summary>
             /// Gets or sets the coefficient of variation of the preconsolidation stress distribution.
-            /// [kN/m³]
+            /// [kN/m²]
             /// </summary>
             public double PreconsolidationStressCoefficientOfVariation { get; set; } = double.NaN;
         }
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/PropertyClasses/MacroStabilityInwardsPreconsolidationStressPropertiesTest.cs
===================================================================
diff -u -reae3622163e0c8bdfc32f73eda6f5bd8d3b02484 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/PropertyClasses/MacroStabilityInwardsPreconsolidationStressPropertiesTest.cs	(.../MacroStabilityInwardsPreconsolidationStressPropertiesTest.cs)	(revision eae3622163e0c8bdfc32f73eda6f5bd8d3b02484)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/PropertyClasses/MacroStabilityInwardsPreconsolidationStressPropertiesTest.cs	(.../MacroStabilityInwardsPreconsolidationStressPropertiesTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -63,9 +63,7 @@
             Assert.IsInstanceOf<ObjectProperties<MacroStabilityInwardsPreconsolidationStress>>(properties);
             Assert.AreSame(stress, properties.Data);
 
-            Assert.AreEqual(2, properties.XCoordinate.NumberOfDecimalPlaces);
             Assert.AreEqual(stress.XCoordinate, properties.XCoordinate, properties.XCoordinate.GetAccuracy());
-            Assert.AreEqual(2, properties.ZCoordinate.NumberOfDecimalPlaces);
             Assert.AreEqual(stress.ZCoordinate, properties.ZCoordinate, properties.ZCoordinate.GetAccuracy());
 
             Assert.IsInstanceOf<VariationCoefficientLogNormalDistributionProperties>(properties.PreconsolidationStress);
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs
===================================================================
diff -u -rc55a333c4b0d017ec75a2f8afb8d2f621361c668 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTransformerTest.cs)	(revision c55a333c4b0d017ec75a2f8afb8d2f621361c668)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTransformerTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -65,8 +65,10 @@
                 MacroStabilityInwardsPreconsolidationStressTransformer.Transform(preconsolidationStress);
 
             // Assert
-            Assert.AreEqual(preconsolidationStress.XCoordinate, transformedStress.XCoordinate);
-            Assert.AreEqual(preconsolidationStress.ZCoordinate, transformedStress.ZCoordinate);
+            Assert.AreEqual(preconsolidationStress.XCoordinate, transformedStress.XCoordinate,
+                            transformedStress.XCoordinate.GetAccuracy());
+            Assert.AreEqual(preconsolidationStress.ZCoordinate, transformedStress.ZCoordinate,
+                            transformedStress.ZCoordinate.GetAccuracy());
 
             VariationCoefficientLogNormalDistribution transformedPreconsolidationStressDistribution = transformedStress.PreconsolidationStress;
             Assert.AreEqual(preconsolidationStress.PreconsolidationStressMean, transformedPreconsolidationStressDistribution.Mean,
@@ -170,28 +172,28 @@
                 ZCoordinate = zCoordinate,
                 PreconsolidationStressMean = preconsolidationStressMean,
                 PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
-            }, "X-coördinaat").SetName("Invalid XCoordinate");
+            }, "X-coördinaat").SetName("XCoordinate NaN");
             yield return new TestCaseData(new PreconsolidationStress
             {
                 XCoordinate = xCoordinate,
                 ZCoordinate = double.NaN,
                 PreconsolidationStressMean = preconsolidationStressMean,
                 PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
-            }, "Z-coördinaat").SetName("Invalid ZCoordinate");
+            }, "Z-coördinaat").SetName("ZCoordinate NaN");
             yield return new TestCaseData(new PreconsolidationStress
             {
                 XCoordinate = xCoordinate,
                 ZCoordinate = zCoordinate,
                 PreconsolidationStressMean = double.NaN,
                 PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
-            }, "gemiddelde").SetName("Invalid Mean");
+            }, "gemiddelde").SetName("Mean NaN");
             yield return new TestCaseData(new PreconsolidationStress
             {
                 XCoordinate = xCoordinate,
                 ZCoordinate = zCoordinate,
                 PreconsolidationStressMean = preconsolidationStressMean,
                 PreconsolidationStressCoefficientOfVariation = double.NaN
-            }, "variatiecoëfficient").SetName("Invalid Coefficient of Variation");
+            }, "variatiecoëfficient").SetName("Coefficient of Variation NaN");
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsSoilProfileTransformerTest.cs
===================================================================
diff -u -reae3622163e0c8bdfc32f73eda6f5bd8d3b02484 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsSoilProfileTransformerTest.cs	(.../MacroStabilityInwardsSoilProfileTransformerTest.cs)	(revision eae3622163e0c8bdfc32f73eda6f5bd8d3b02484)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsSoilProfileTransformerTest.cs	(.../MacroStabilityInwardsSoilProfileTransformerTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -139,9 +139,11 @@
                                                          MacroStabilityInwardsPreconsolidationStress transformedPreconsolidationStress)
         {
             Assert.AreEqual(preconsolidationStress.XCoordinate,
-                            transformedPreconsolidationStress.XCoordinate);
+                            transformedPreconsolidationStress.XCoordinate,
+                            transformedPreconsolidationStress.XCoordinate.GetAccuracy());
             Assert.AreEqual(preconsolidationStress.ZCoordinate,
-                            transformedPreconsolidationStress.ZCoordinate);
+                            transformedPreconsolidationStress.ZCoordinate,
+                            transformedPreconsolidationStress.ZCoordinate.GetAccuracy());
 
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
             {
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsPreconsolidationStressTest.cs
===================================================================
diff -u -re64377104810125b438aaf229d489a76debca60d -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsPreconsolidationStressTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTest.cs)	(revision e64377104810125b438aaf229d489a76debca60d)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsPreconsolidationStressTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -49,8 +49,12 @@
                                                                          stressMean,
                                                                          stressCoefficientOfVariation);
             // Assert
-            Assert.AreEqual(xCoordinate, stress.XCoordinate);
-            Assert.AreEqual(zCoordinate, stress.ZCoordinate);
+            Assert.AreEqual(2, stress.XCoordinate.NumberOfDecimalPlaces);
+            Assert.AreEqual(xCoordinate, stress.XCoordinate,
+                            stress.XCoordinate.GetAccuracy());
+            Assert.AreEqual(2, stress.ZCoordinate.NumberOfDecimalPlaces);
+            Assert.AreEqual(zCoordinate, stress.ZCoordinate,
+                            stress.ZCoordinate.GetAccuracy());
 
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
             {
@@ -243,6 +247,41 @@
         }
 
         [Test]
+        public void Equals_TransitiveProperty_ReturnsTrue()
+        {
+            // Setup
+            var random = new Random(21);
+
+            double xCoordinate = random.NextDouble();
+            double zCoordinate = random.NextDouble();
+            double stressMean = random.NextDouble();
+            double stressCoefficientOfVariation = random.NextDouble();
+
+            var stressA = new MacroStabilityInwardsPreconsolidationStress(xCoordinate,
+                                                                          zCoordinate,
+                                                                          stressMean,
+                                                                          stressCoefficientOfVariation);
+            var stressB = new MacroStabilityInwardsPreconsolidationStress(xCoordinate,
+                                                                          zCoordinate,
+                                                                          stressMean,
+                                                                          stressCoefficientOfVariation);
+            var stressC = new MacroStabilityInwardsPreconsolidationStress(xCoordinate,
+                                                                          zCoordinate,
+                                                                          stressMean,
+                                                                          stressCoefficientOfVariation);
+
+            // Call
+            bool aEqualsB = stressA.Equals(stressB);
+            bool bEqualsC = stressB.Equals(stressC);
+            bool aEqualsC = stressA.Equals(stressC);
+
+            // Assert
+            Assert.IsTrue(aEqualsB);
+            Assert.IsTrue(bEqualsC);
+            Assert.IsTrue(aEqualsC);
+        }
+
+        [Test]
         public void GetHashCode_PropertiesAllEqual_ReturnsSameHashCode()
         {
             // Setup
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilProfile2DTest.cs
===================================================================
diff -u -r8f603e2036a1d07da2dfd2288f9de86abccb2e55 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilProfile2DTest.cs	(.../MacroStabilityInwardsSoilProfile2DTest.cs)	(revision 8f603e2036a1d07da2dfd2288f9de86abccb2e55)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilProfile2DTest.cs	(.../MacroStabilityInwardsSoilProfile2DTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -208,6 +208,39 @@
             Assert.IsTrue(profileBEqualA);
         }
 
+        [Test]
+        public void Equals_ToDerivedClass_ReturnsFalse()
+        {
+            // Setup
+            MacroStabilityInwardsSoilProfile2D profile = CreateRandomProfile(21);
+            var derivedProfile = new DerivedSoilProfile(profile.Name, profile.Layers, profile.PreconsolidationStresses);
+
+            // Call
+            bool profileEqualsDerivedProfile = profile.Equals(derivedProfile);
+
+            // Assert
+            Assert.IsFalse(profileEqualsDerivedProfile);
+        }
+
+        [Test]
+        public void Equals_TransitiveProperty_ReturnsTrue()
+        {
+            // Setup
+            MacroStabilityInwardsSoilProfile2D profileA = CreateRandomProfile(21);
+            MacroStabilityInwardsSoilProfile2D profileB = CreateRandomProfile(21);
+            MacroStabilityInwardsSoilProfile2D profileC = CreateRandomProfile(21);
+
+            // Call
+            bool aEqualsB = profileA.Equals(profileB);
+            bool bEqualsC = profileB.Equals(profileC);
+            bool aEqualsC = profileA.Equals(profileC);
+
+            // Assert
+            Assert.IsTrue(aEqualsB);
+            Assert.IsTrue(bEqualsC);
+            Assert.IsTrue(aEqualsC);
+        }
+
         private static IEnumerable<TestCaseData> ProfileCombinationsResultFalse()
         {
             const int seed = 78;
@@ -240,7 +273,7 @@
             var differentLayers = new[]
             {
                 CreateRandomLayer(seed),
-                CreateRandomLayer(seed + 1)
+                CopyAndModifySoilLayer(CreateRandomLayer(seed))
             };
             yield return new TestCaseData(baseProfile,
                                           new MacroStabilityInwardsSoilProfile2D(baseProfile.Name,
@@ -257,7 +290,7 @@
             var differentStresses = new[]
             {
                 CreateRandomPreconsolidationStress(seed),
-                CreateRandomPreconsolidationStress(seed + 1)
+                CopyAndModifyPreconsolidationsStress(CreateRandomPreconsolidationStress(seed))
             };
             yield return new TestCaseData(baseProfile,
                                           new MacroStabilityInwardsSoilProfile2D(baseProfile.Name,
@@ -303,6 +336,20 @@
             };
         }
 
+        private static MacroStabilityInwardsSoilLayer2D CopyAndModifySoilLayer(MacroStabilityInwardsSoilLayer2D soilLayer)
+        {
+            return new MacroStabilityInwardsSoilLayer2D(soilLayer.OuterRing, new[]
+            {
+                soilLayer.Holes[0]
+            })
+            {
+                Properties =
+                {
+                    Color = soilLayer.Properties.Color
+                }
+            };
+        }
+
         private static Ring CreateRandomRing(int seed)
         {
             var random = new Random(seed);
@@ -327,9 +374,27 @@
                                                                    random.NextDouble());
         }
 
+        private static MacroStabilityInwardsPreconsolidationStress CopyAndModifyPreconsolidationsStress(
+            MacroStabilityInwardsPreconsolidationStress stress)
+        {
+            var random = new Random(29);
+            return new MacroStabilityInwardsPreconsolidationStress(stress.XCoordinate + random.NextDouble(),
+                                                                   stress.ZCoordinate + random.NextDouble(),
+                                                                   stress.PreconsolidationStress.Mean + random.NextDouble(),
+                                                                   stress.PreconsolidationStress.CoefficientOfVariation + random.NextDouble());
+        }
+
         private static string GetRandomName(Random random)
         {
             return new string('x', random.Next(0, 40));
         }
+
+        private class DerivedSoilProfile : MacroStabilityInwardsSoilProfile2D
+        {
+            public DerivedSoilProfile(string name,
+                                      IEnumerable<MacroStabilityInwardsSoilLayer2D> layers,
+                                      IEnumerable<MacroStabilityInwardsPreconsolidationStress> preconsolidationStresses)
+                : base(name, layers, preconsolidationStresses) {}
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.TestUtil.Test/MacroStabilityInwardsPreconsolidationStressTestFactoryTest.cs
===================================================================
diff -u -reae3622163e0c8bdfc32f73eda6f5bd8d3b02484 -r49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.TestUtil.Test/MacroStabilityInwardsPreconsolidationStressTestFactoryTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTestFactoryTest.cs)	(revision eae3622163e0c8bdfc32f73eda6f5bd8d3b02484)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.TestUtil.Test/MacroStabilityInwardsPreconsolidationStressTestFactoryTest.cs	(.../MacroStabilityInwardsPreconsolidationStressTestFactoryTest.cs)	(revision 49bb14e91d1ff06ec08b52f2e76c11dcf54e5ee0)
@@ -40,8 +40,8 @@
             Assert.IsNotNull(stress);
 
             Assert.AreEqual(typeof(MacroStabilityInwardsPreconsolidationStress), stress.GetType());
-            Assert.AreEqual(13, stress.XCoordinate);
-            Assert.AreEqual(34, stress.ZCoordinate);
+            Assert.AreEqual(13, stress.XCoordinate, stress.XCoordinate.GetAccuracy());
+            Assert.AreEqual(34, stress.ZCoordinate, stress.ZCoordinate.GetAccuracy());
 
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
             {