Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsSemiProbabilisticDesignValueFactory.cs
===================================================================
diff -u -r708bcebfe9e5db209c818a12d630cb418231f863 -re8655c3b4b463b40f20e289ffeaf9d9605c291c0
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsSemiProbabilisticDesignValueFactory.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignValueFactory.cs)	(revision 708bcebfe9e5db209c818a12d630cb418231f863)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsSemiProbabilisticDesignValueFactory.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignValueFactory.cs)	(revision e8655c3b4b463b40f20e289ffeaf9d9605c291c0)
@@ -37,5 +37,53 @@
         {
             return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.AbovePhreaticLevel, 0.5);
         }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.BelowPhreaticLevel"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetBelowPhreaticLevel(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.BelowPhreaticLevel, 0.5);
+        }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.Cohesion"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetCohesion(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.Cohesion, 0.05);
+        }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.FrictionAngle"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetFrictionAngle(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.FrictionAngle, 0.05);
+        }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ShearStrengthRatio"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetShearStrengthRatio(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.ShearStrengthRatio, 0.05);
+        }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.StrengthIncreaseExponent"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetStrengthIncreaseExponent(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.StrengthIncreaseExponent, 0.05);
+        }
+
+        /// <summary>
+        /// Creates the design variable for <see cref="MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.Pop"/>.
+        /// </summary>
+        public static VariationCoefficientLogNormalDistributionDesignVariable GetPop(MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine properties)
+        {
+            return SemiProbabilisticDesignValueFactory.CreateDesignVariable(properties.Pop, 0.05);
+        }
     }
 }
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.cs
===================================================================
diff -u -r215064b63d899a054496d365818feb84cd1ab8b4 -re8655c3b4b463b40f20e289ffeaf9d9605c291c0
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.cs	(.../MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.cs)	(revision 215064b63d899a054496d365818feb84cd1ab8b4)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.cs	(.../MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.cs)	(revision e8655c3b4b463b40f20e289ffeaf9d9605c291c0)
@@ -67,6 +67,12 @@
                 CoefficientOfVariation = (RoundedDouble) properties.FrictionAngleCoefficientOfVariation
             };
 
+            StrengthIncreaseExponent = new VariationCoefficientLogNormalDistribution(2)
+            {
+                Mean = (RoundedDouble) properties.StrengthIncreaseExponentMean,
+                CoefficientOfVariation = (RoundedDouble) properties.StrengthIncreaseExponentCoefficientOfVariation
+            };
+
             ShearStrengthRatio = new VariationCoefficientLogNormalDistribution(2)
             {
                 Mean = (RoundedDouble) properties.ShearStrengthRatioMean,
@@ -132,6 +138,12 @@
         public VariationCoefficientLogNormalDistribution FrictionAngle { get; }
 
         /// <summary>
+        /// Gets the strength increase component.
+        /// [-]
+        /// </summary>
+        public VariationCoefficientLogNormalDistribution StrengthIncreaseExponent { get; set; }
+
+        /// <summary>
         /// Gets the shear strength ratio.
         /// [-]
         /// </summary>
@@ -168,6 +180,11 @@
         public RoundedDouble FrictionAngleDesignVariable { get; set; }
 
         /// <summary>
+        /// Gets or sets the design variable of the distribution for the strength increase exponent.
+        /// </summary>
+        public RoundedDouble StrengthIncreaseExponentDesignVariable { get; set; }
+
+        /// <summary>
         /// Gets or sets the design variable of the distribution for the shear strength ratio.
         /// </summary>
         public RoundedDouble ShearStrengthRatioDesignVariable { get; set; }
@@ -196,6 +213,8 @@
                 CohesionCoefficientOfVariation = double.NaN;
                 FrictionAngleMean = double.NaN;
                 FrictionAngleCoefficientOfVariation = double.NaN;
+                StrengthIncreaseExponentMean = double.NaN;
+                StrengthIncreaseExponentCoefficientOfVariation = double.NaN;
                 ShearStrengthRatioMean = double.NaN;
                 ShearStrengthRatioCoefficientOfVariation = double.NaN;
                 PopMean = double.NaN;
@@ -253,6 +272,18 @@
             public double FrictionAngleCoefficientOfVariation { internal get; set; }
 
             /// <summary>
+            /// Gets or sets the mean of the distribution for the strength increase exponent.
+            /// [-]
+            /// </summary>
+            public double StrengthIncreaseExponentMean { internal get; set; }
+
+            /// <summary>
+            /// Gets or sets the coefficient of variation of the distribution for the strength increase exponent.
+            /// [-]
+            /// </summary>
+            public double StrengthIncreaseExponentCoefficientOfVariation { internal get; set; }
+
+            /// <summary>
             /// Gets or sets the mean of the distribution for the shear strength ratio.
             /// [-]
             /// </summary>
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest.cs
===================================================================
diff -u -r708bcebfe9e5db209c818a12d630cb418231f863 -re8655c3b4b463b40f20e289ffeaf9d9605c291c0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest.cs)	(revision 708bcebfe9e5db209c818a12d630cb418231f863)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Data.Test/MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest.cs	(.../MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest.cs)	(revision e8655c3b4b463b40f20e289ffeaf9d9605c291c0)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using NUnit.Framework;
 using Ringtoets.Common.Data.Probabilistics;
 using Ringtoets.Common.Data.TestUtil;
@@ -29,15 +30,27 @@
     [TestFixture]
     public class MacroStabilityInwardsSemiProbabilisticDesignValueFactoryTest
     {
+        private Random random;
+        private double mean;
+        private double coefficientOfVariation;
+
+        [SetUp]
+        public void Setup()
+        {
+            random = new Random();
+            mean = random.NextDouble();
+            coefficientOfVariation = random.NextDouble();
+        }
+
         [Test]
-        public void GetAbovePhreaticLevel_ValidSoilLayerProperties_CreateDesignValueForAbovePhreaticLevel()
+        public void GetAbovePhreaticLevel_ValidSoilLayerProperties_CreateDesignVariableForAbovePhreaticLevel()
         {
             // Setup
             var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
                 new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
                 {
-                    AbovePhreaticLevelMean = 1,
-                    AbovePhreaticLevelCoefficientOfVariation = 0.4
+                    AbovePhreaticLevelMean = mean,
+                    AbovePhreaticLevelCoefficientOfVariation = coefficientOfVariation
                 });
 
             // Call
@@ -48,6 +61,120 @@
             AssertPercentile(0.5, abovePhreaticLevel);
         }
 
+        [Test]
+        public void GetBelowPhreaticLevel_ValidSoilLayerProperties_CreateDesignVariableForBelowPhreaticLevel()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    BelowPhreaticLevelMean = mean,
+                    BelowPhreaticLevelCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable belowPhreaticLevel = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetBelowPhreaticLevel(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.BelowPhreaticLevel, belowPhreaticLevel.Distribution);
+            AssertPercentile(0.5, belowPhreaticLevel);
+        }
+
+        [Test]
+        public void GetCohesion_ValidSoilLayerProperties_CreateDesignVariableForCohesion()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    CohesionMean = mean,
+                    CohesionCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable cohesion = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetCohesion(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.Cohesion, cohesion.Distribution);
+            AssertPercentile(0.05, cohesion);
+        }
+
+        [Test]
+        public void GetFrictionAngle_ValidSoilLayerProperties_CreateDesignVariableForFrictionAngle()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    FrictionAngleMean = mean,
+                    FrictionAngleCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable frictionAngle = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetFrictionAngle(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.FrictionAngle, frictionAngle.Distribution);
+            AssertPercentile(0.05, frictionAngle);
+        }
+
+        [Test]
+        public void GetShearStrengthRatio_ValidSoilLayerProperties_CreateDesignVariableForShearStrengthRatio()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    ShearStrengthRatioMean = mean,
+                    ShearStrengthRatioCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable shearStrengthRatio = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetShearStrengthRatio(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.ShearStrengthRatio, shearStrengthRatio.Distribution);
+            AssertPercentile(0.05, shearStrengthRatio);
+        }
+
+        [Test]
+        public void GetStrengthIncreaseExponent_ValidSoilLayerProperties_CreateDesignVariableForStrengthIncreaseExponent()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    StrengthIncreaseExponentMean = mean,
+                    StrengthIncreaseExponentCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable strengthIncreaseExponent = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetStrengthIncreaseExponent(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.StrengthIncreaseExponent, strengthIncreaseExponent.Distribution);
+            AssertPercentile(0.05, strengthIncreaseExponent);
+        }
+
+        [Test]
+        public void GetPop_ValidSoilLayerProperties_CreateDesignVariableForPop()
+        {
+            // Setup
+            var properties = new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine(
+                new MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLine.ConstructionProperties
+                {
+                    PopMean = mean,
+                    PopCoefficientOfVariation = coefficientOfVariation
+                });
+
+            // Call
+            VariationCoefficientLogNormalDistributionDesignVariable pop = MacroStabilityInwardsSemiProbabilisticDesignValueFactory.GetPop(properties);
+
+            // Assert
+            DistributionAssert.AreEqual(properties.Pop, pop.Distribution);
+            AssertPercentile(0.05, pop);
+        }
+
         private static void AssertPercentile(double percentile, VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> designVariable)
         {
             Assert.IsInstanceOf<VariationCoefficientLogNormalDistributionDesignVariable>(designVariable);
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLineTest.cs
===================================================================
diff -u -r215064b63d899a054496d365818feb84cd1ab8b4 -re8655c3b4b463b40f20e289ffeaf9d9605c291c0
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLineTest.cs	(.../MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLineTest.cs)	(revision 215064b63d899a054496d365818feb84cd1ab8b4)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Primitives.Test/MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLineTest.cs	(.../MacroStabilityInwardsSoilLayerPropertiesUnderSurfaceLineTest.cs)	(revision e8655c3b4b463b40f20e289ffeaf9d9605c291c0)
@@ -69,6 +69,10 @@
             double frictionAngleCoefficientOfVariation = random.NextDouble();
             RoundedDouble frictionAngleDesignVariable = random.NextRoundedDouble();
 
+            double strengthIncreaseExponentMean = random.NextDouble();
+            double strengthIncreaseExponentCoefficientOfVariation = random.NextDouble();
+            RoundedDouble strengthIncreaseExponentDesignVariable = random.NextRoundedDouble();
+
             double shearStrengthRatioMean = random.NextDouble();
             double shearStrengthRatioCoefficientOfVariation = random.NextDouble();
             RoundedDouble shearStrengthRatioDesignVariable = random.NextRoundedDouble();
@@ -91,6 +95,8 @@
                 CohesionCoefficientOfVariation = cohesionCoefficientOfVariation,
                 FrictionAngleMean = frictionAngleMean,
                 FrictionAngleCoefficientOfVariation = frictionAngleCoefficientOfVariation,
+                StrengthIncreaseExponentMean = strengthIncreaseExponentMean,
+                StrengthIncreaseExponentCoefficientOfVariation = strengthIncreaseExponentCoefficientOfVariation,
                 ShearStrengthRatioMean = shearStrengthRatioMean,
                 ShearStrengthRatioCoefficientOfVariation = shearStrengthRatioCoefficientOfVariation,
                 PopMean = popMean,
@@ -104,6 +110,7 @@
                 BelowPhreaticLevelDesignVariable = belowPhreaticLevelDesignVariable,
                 CohesionDesignVariable = cohesionDesignVariable,
                 FrictionAngleDesignVariable = frictionAngleDesignVariable,
+                StrengthIncreaseExponentDesignVariable = strengthIncreaseExponentDesignVariable,
                 ShearStrengthRatioDesignVariable = shearStrengthRatioDesignVariable,
                 PopDesignVariable = popDesignVariable
             };
@@ -117,6 +124,7 @@
             Assert.AreEqual(belowPhreaticLevelDesignVariable, properties.BelowPhreaticLevelDesignVariable);
             Assert.AreEqual(cohesionDesignVariable, properties.CohesionDesignVariable);
             Assert.AreEqual(frictionAngleDesignVariable, properties.FrictionAngleDesignVariable);
+            Assert.AreEqual(strengthIncreaseExponentDesignVariable, properties.StrengthIncreaseExponentDesignVariable);
             Assert.AreEqual(shearStrengthRatioDesignVariable, properties.ShearStrengthRatioDesignVariable);
             Assert.AreEqual(popDesignVariable, properties.PopDesignVariable);
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
@@ -141,6 +149,11 @@
             }, properties.FrictionAngle);
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
             {
+                Mean = (RoundedDouble) strengthIncreaseExponentMean,
+                CoefficientOfVariation = (RoundedDouble) strengthIncreaseExponentCoefficientOfVariation
+            }, properties.StrengthIncreaseExponent);
+            DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
+            {
                 Mean = (RoundedDouble) shearStrengthRatioMean,
                 CoefficientOfVariation = (RoundedDouble) shearStrengthRatioCoefficientOfVariation
             }, properties.ShearStrengthRatio);
@@ -182,6 +195,11 @@
             {
                 Mean = RoundedDouble.NaN,
                 CoefficientOfVariation = RoundedDouble.NaN
+            }, properties.StrengthIncreaseExponent);
+            DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
+            {
+                Mean = RoundedDouble.NaN,
+                CoefficientOfVariation = RoundedDouble.NaN
             }, properties.ShearStrengthRatio);
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)
             {