Index: Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.Designer.cs
===================================================================
diff -u -r93acf9b0dcf191ef5088f4d822a81b1759c10532 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 93acf9b0dcf191ef5088f4d822a81b1759c10532)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -728,6 +728,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Grensspanning.
+        /// </summary>
+        public static string PreconsolidationStress_Name {
+            get {
+                return ResourceManager.GetString("PreconsolidationStress_Name", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Kans moet in het bereik {0} liggen..
         /// </summary>
         public static string Probability_Must_be_in_Range_0_ {
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.resx
===================================================================
diff -u -r93acf9b0dcf191ef5088f4d822a81b1759c10532 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 93acf9b0dcf191ef5088f4d822a81b1759c10532)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -387,4 +387,7 @@
   <data name="CharacteristicPoint_DikeTopAtRiver" xml:space="preserve">
     <value>Kruin buitentalud</value>
   </data>
+  <data name="PreconsolidationStress_Name" xml:space="preserve">
+    <value>Grensspanning</value>
+  </data>
 </root>
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.IO/Ringtoets.Common.IO.csproj
===================================================================
diff -u -rf23ce41a1dd004c56ab38179b6b28cd389edba36 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/Common/src/Ringtoets.Common.IO/Ringtoets.Common.IO.csproj	(.../Ringtoets.Common.IO.csproj)	(revision f23ce41a1dd004c56ab38179b6b28cd389edba36)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Ringtoets.Common.IO.csproj	(.../Ringtoets.Common.IO.csproj)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -145,7 +145,7 @@
     <Compile Include="SoilProfile\SoilLayerColorConverter.cs" />
     <Compile Include="Exceptions\SoilLayerConversionException.cs" />
     <Compile Include="SoilProfile\SoilLayerConstants.cs" />
-    <Compile Include="SoilProfile\SoilLayerDistributionHelper.cs" />
+    <Compile Include="SoilProfile\DistributionHelper.cs" />
     <Compile Include="SoilProfile\SoilLayerHelper.cs" />
     <Compile Include="SoilProfile\SoilLayerIsAquiferConverter.cs" />
     <Compile Include="SoilProfile\SoilProfile1D.cs" />
Index: Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/DistributionHelper.cs
===================================================================
diff -u
--- Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/DistributionHelper.cs	(revision 0)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/DistributionHelper.cs	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -0,0 +1,86 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using Ringtoets.Common.IO.Exceptions;
+using Ringtoets.Common.IO.Properties;
+
+namespace Ringtoets.Common.IO.SoilProfile
+{
+    /// <summary>
+    /// Class which provides helper methods for validating distributions coming from
+    /// D-Soil model files.
+    /// </summary>
+    public static class DistributionHelper
+    {
+        private const double tolerance = 1e-6;
+
+        /// <summary>
+        /// Validates that the distribution is a non-shifted log normal distribution.
+        /// </summary>
+        /// <param name="distributionType">The distribution type.</param>
+        /// <param name="shift">The value of the shift.</param>
+        /// <param name="parameterName">The name of the parameter to be validated.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="parameterName"/>
+        /// is <c>null</c>.</exception>
+        /// <exception cref="ImportedDataTransformException">Thrown when the parameter is not a 
+        /// log normal distribution with a zero shift.</exception>
+        public static void ValidateIsNonShiftedLogNormal(long? distributionType, double shift, string parameterName)
+        {
+            if (parameterName == null)
+            {
+                throw new ArgumentNullException(nameof(parameterName));
+            }
+
+            if (distributionType.HasValue && (distributionType.Value != SoilLayerConstants.LogNormalDistributionValue
+                                          || Math.Abs(shift) > tolerance))
+            {
+                throw new ImportedDataTransformException(string.Format(
+                                                             Resources.SoilLayer_Stochastic_parameter_0_has_no_lognormal_distribution,
+                                                             parameterName));
+            }
+        }
+
+        /// <summary>
+        /// Validates that the distribution is a log normal distribution.
+        /// </summary>
+        /// <param name="distributionType">The distribution type.</param>
+        /// <param name="parameterName">The name of the parameter to be validated.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="parameterName"/>
+        /// is <c>null</c>.</exception>
+        /// <exception cref="ImportedDataTransformException">Thrown when the parameter is not a 
+        /// log-normal distribution.</exception>
+        public static void ValidateIsLogNormal(long? distributionType, string parameterName)
+        {
+            if (parameterName == null)
+            {
+                throw new ArgumentNullException(nameof(parameterName));
+            }
+
+            if (distributionType.HasValue && distributionType != SoilLayerConstants.LogNormalDistributionValue)
+            {
+                throw new ImportedDataTransformException(string.Format(
+                                                             Resources.SoilLayer_Stochastic_parameter_0_has_no_shifted_lognormal_distribution,
+                                                             parameterName));
+            }
+        }
+    }
+}
\ No newline at end of file
Fisheye: Tag 604dfe021f6161f8e5d107dd5821ba06390c5ecf refers to a dead (removed) revision in file `Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilLayerDistributionHelper.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/Ringtoets.Common.IO.Test.csproj
===================================================================
diff -u -r207d916eaef6ef69b3ca14fe0302a7d83dce255c -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/Ringtoets.Common.IO.Test.csproj	(.../Ringtoets.Common.IO.Test.csproj)	(revision 207d916eaef6ef69b3ca14fe0302a7d83dce255c)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/Ringtoets.Common.IO.Test.csproj	(.../Ringtoets.Common.IO.Test.csproj)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -126,7 +126,7 @@
     <Compile Include="SoilProfile\SoilLayerBaseTest.cs" />
     <Compile Include="SoilProfile\SoilLayerColorConverterTest.cs" />
     <Compile Include="Exceptions\SoilLayerConversionExceptionTest.cs" />
-    <Compile Include="SoilProfile\SoilLayerDistributionHelperTest.cs" />
+    <Compile Include="SoilProfile\DistributionHelperTest.cs" />
     <Compile Include="SoilProfile\SoilLayerIsAquiferConverterTest.cs" />
     <Compile Include="SoilProfile\SoilProfile1DReaderTest.cs" />
     <Compile Include="SoilProfile\SoilProfile1DTest.cs" />
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/DistributionHelperTest.cs
===================================================================
diff -u
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/DistributionHelperTest.cs	(revision 0)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/DistributionHelperTest.cs	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -0,0 +1,163 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using NUnit.Framework;
+using Ringtoets.Common.IO.Exceptions;
+using Ringtoets.Common.IO.SoilProfile;
+
+namespace Ringtoets.Common.IO.Test.SoilProfile
+{
+    [TestFixture]
+    public class DistributionHelperTest
+    {
+        [Test]
+        public void ValidateIsNonShiftedLogNormal_ParameterNameNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var random = new Random(21);
+            long distributionType = random.Next();
+            double shift = random.NextDouble();
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsNonShiftedLogNormal(distributionType,
+                                                                                                shift,
+                                                                                                null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("parameterName", exception.ParamName);
+        }
+
+        [Test]
+        [TestCase(-1, 0)]
+        [TestCase(3, 10)]
+        public void ValidateIsNonShiftedLogNormal_InvalidDistributionProperties_ThrowsImportedDataException(
+            long distributionType,
+            double shift)
+        {
+            // Setup
+            const string parameterName = "Just a name";
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsNonShiftedLogNormal(distributionType,
+                                                                                                shift,
+                                                                                                parameterName);
+
+            // Assert
+            var exception = Assert.Throws<ImportedDataTransformException>(call);
+            Assert.AreEqual($"Parameter '{parameterName}' is niet lognormaal verdeeld.", exception.Message);
+        }
+
+        [Test]
+        public void ValidateIsNonShiftedLogNormal_ValidDistribution_DoesNotThrowException()
+        {
+            // Setup
+            const long distributionType = 3;
+            const double shift = 0;
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsNonShiftedLogNormal(distributionType,
+                                                                                                shift,
+                                                                                                string.Empty);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+
+        [Test]
+        public void ValidateIsNonShiftedLogNormal_DistributionTypeNull_DoesNotThrowException()
+        {
+            // Setup
+            var random = new Random(21);
+            double shift = random.NextDouble();
+            const string parameterName = "Just a name";
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsNonShiftedLogNormal(null,
+                                                                                                shift,
+                                                                                                parameterName);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+
+        [Test]
+        public void ValidateIsLogNormal_ParameterNameNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var random = new Random(21);
+            long distributionType = random.Next();
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsLogNormal(distributionType,
+                                                                                      null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("parameterName", exception.ParamName);
+        }
+
+        [Test]
+        public void ValidateIsLogNormal_InvalidDistributionProperties_ThrowsImportedDataException()
+        {
+            // Setup
+            const long invalidDistributionType = -1;
+            const string parameterName = "Just a name";
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsLogNormal(invalidDistributionType,
+                                                                                      parameterName);
+
+            // Assert
+            var exception = Assert.Throws<ImportedDataTransformException>(call);
+            Assert.AreEqual($"Parameter '{parameterName}' is niet verschoven lognormaal verdeeld.", exception.Message);
+        }
+
+        [Test]
+        public void ValidateIsLogNormal_ValidDistribution_DoesNotThrowException()
+        {
+            // Setup
+            const long distributionType = 3;
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsLogNormal(distributionType,
+                                                                                      string.Empty);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+
+        [Test]
+        public void ValidateIsLogNormal_DistributionTypeNull_DoesNotThrowException()
+        {
+            // Setup
+            const string parameterName = "Just a name";
+
+            // Call
+            TestDelegate call = () => DistributionHelper.ValidateIsLogNormal(null,
+                                                                                      parameterName);
+
+            // Assert
+            Assert.DoesNotThrow(call);
+        }
+    }
+}
\ No newline at end of file
Fisheye: Tag 604dfe021f6161f8e5d107dd5821ba06390c5ecf refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/SoilLayerDistributionHelperTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Ringtoets.MacroStabilityInwards.IO.csproj
===================================================================
diff -u -r91dfcac4a3eff0748168e9fc8e9400e209844363 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Ringtoets.MacroStabilityInwards.IO.csproj	(.../Ringtoets.MacroStabilityInwards.IO.csproj)	(revision 91dfcac4a3eff0748168e9fc8e9400e209844363)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/Ringtoets.MacroStabilityInwards.IO.csproj	(.../Ringtoets.MacroStabilityInwards.IO.csproj)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -38,6 +38,7 @@
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationExporter.cs" />
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationWriter.cs" />
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationImporter.cs" />
+    <Compile Include="SoilProfiles\MacroStabilityInwardsPreconsolidationStressTransformer.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsSoilLayerTransformer.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsSoilProfileTransformer.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsStochasticSoilModelFilter.cs" />
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformer.cs
===================================================================
diff -u
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformer.cs	(revision 0)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformer.cs	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -0,0 +1,73 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using Ringtoets.Common.IO.Exceptions;
+using Ringtoets.Common.IO.SoilProfile;
+using Ringtoets.MacroStabilityInwards.Primitives;
+using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
+
+namespace Ringtoets.MacroStabilityInwards.IO.SoilProfiles
+{
+    /// <summary>
+    /// Transforms a generic <see cref="PreconsolidationStress"/> into a 
+    /// <see cref="MacroStabilityInwardsPreconsolidationStress"/>.
+    /// </summary>
+    internal static class MacroStabilityInwardsPreconsolidationStressTransformer
+    {
+        /// <summary>
+        /// Transforms the generic <paramref name="preconsolidationStress"/> into 
+        /// a <see cref="MacroStabilityInwardsPreconsolidationStress"/>.
+        /// </summary>
+        /// <param name="preconsolidationStress">The preconsolidation stress to use 
+        /// in the transformation.</param>
+        /// <returns>A <see cref="MacroStabilityInwardsPreconsolidationStress"/>
+        /// based on the given data.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="preconsolidationStress"/>
+        /// is <c>null</c>.</exception>
+        /// <exception cref="ImportedDataTransformException">Thrown when the 
+        /// <paramref name="preconsolidationStress"/> could not be transformed into
+        /// a <see cref="MacroStabilityInwardsPreconsolidationStress"/>.</exception>
+        public static MacroStabilityInwardsPreconsolidationStress Transform(PreconsolidationStress preconsolidationStress)
+        {
+            if (preconsolidationStress == null)
+            {
+                throw new ArgumentNullException(nameof(preconsolidationStress));
+            }
+
+            DistributionHelper.ValidateIsNonShiftedLogNormal(preconsolidationStress.PreconsolidationStressDistributionType,
+                                                                      preconsolidationStress.PreconsolidationStressShift,
+                                                                      RingtoetsCommonDataResources.PreconsolidationStress_Name);
+
+            try
+            {
+                return new MacroStabilityInwardsPreconsolidationStress(preconsolidationStress.XCoordinate,
+                                                                       preconsolidationStress.ZCoordinate,
+                                                                       preconsolidationStress.PreconsolidationStressMean,
+                                                                       preconsolidationStress.PreconsolidationStressCoefficientOfVariation);
+            }
+            catch (ArgumentException e)
+            {
+                throw new ImportedDataTransformException(e.Message, e);
+            }
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsSoilLayerTransformer.cs
===================================================================
diff -u -r6f1f1f2dc45d71b0b40c6a84ed233d50f04c4b62 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsSoilLayerTransformer.cs	(.../MacroStabilityInwardsSoilLayerTransformer.cs)	(revision 6f1f1f2dc45d71b0b40c6a84ed233d50f04c4b62)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.IO/SoilProfiles/MacroStabilityInwardsSoilLayerTransformer.cs	(.../MacroStabilityInwardsSoilLayerTransformer.cs)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -230,34 +230,34 @@
         /// stochastic parameters is not defined as lognormal or is shifted when it should not be.</exception>
         private static void ValidateStochasticParameters(SoilLayerBase soilLayer)
         {
-            SoilLayerDistributionHelper.ValidateIsLogNormal(soilLayer.AbovePhreaticLevelDistributionType,
+            DistributionHelper.ValidateIsLogNormal(soilLayer.AbovePhreaticLevelDistributionType,
                                                             Resources.SoilLayerProperties_AbovePhreaticLevelDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsLogNormal(
+            DistributionHelper.ValidateIsLogNormal(
                 soilLayer.BelowPhreaticLevelDistributionType,
                 Resources.SoilLayerProperties_BelowPhreaticLevelDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.CohesionDistributionType,
                 soilLayer.CohesionShift,
                 Resources.SoilLayerProperties_CohesionDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.FrictionAngleDistributionType,
                 soilLayer.FrictionAngleShift,
                 Resources.SoilLayerProperties_FrictionAngleDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.ShearStrengthRatioDistributionType,
                 soilLayer.ShearStrengthRatioShift,
                 Resources.SoilLayerProperties_ShearStrengthRatioDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.StrengthIncreaseExponentDistributionType,
                 soilLayer.StrengthIncreaseExponentShift,
                 Resources.SoilLayerProperties_StrengthIncreaseExponentDistribution_Description);
 
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.PopDistributionType,
                 soilLayer.PopShift,
                 Resources.SoilLayerProperties_PopDistribution_Description);
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/Ringtoets.MacroStabilityInwards.IO.Test.csproj
===================================================================
diff -u -r91dfcac4a3eff0748168e9fc8e9400e209844363 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/Ringtoets.MacroStabilityInwards.IO.Test.csproj	(.../Ringtoets.MacroStabilityInwards.IO.Test.csproj)	(revision 91dfcac4a3eff0748168e9fc8e9400e209844363)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/Ringtoets.MacroStabilityInwards.IO.Test.csproj	(.../Ringtoets.MacroStabilityInwards.IO.Test.csproj)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -64,6 +64,7 @@
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationReaderTest.cs" />
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationTest.cs" />
     <Compile Include="Configurations\MacroStabilityInwardsCalculationConfigurationSchemaIdentifiersTest.cs" />
+    <Compile Include="SoilProfiles\MacroStabilityInwardsPreconsolidationStressTransformerTest.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsSoilLayerTransformerTest.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsSoilProfileTransformerTest.cs" />
     <Compile Include="SoilProfiles\MacroStabilityInwardsStochasticSoilModelFilterTest.cs" />
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs
===================================================================
diff -u
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs	(revision 0)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.IO.Test/SoilProfiles/MacroStabilityInwardsPreconsolidationStressTransformerTest.cs	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -0,0 +1,153 @@
+// Copyright (C) Stichting Deltares 2017. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using Ringtoets.Common.IO.Exceptions;
+using Ringtoets.Common.IO.SoilProfile;
+using Ringtoets.MacroStabilityInwards.IO.SoilProfiles;
+using Ringtoets.MacroStabilityInwards.Primitives;
+
+namespace Ringtoets.MacroStabilityInwards.IO.Test.SoilProfiles
+{
+    [TestFixture]
+    public class MacroStabilityInwardsPreconsolidationStressTransformerTest
+    {
+        [Test]
+        public void Transform_PreconsolidationStressNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => MacroStabilityInwardsPreconsolidationStressTransformer.Transform(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("preconsolidationStress", exception.ParamName);
+        }
+
+        [Test]
+        public void Transform_ValidPreconsolidationStress_ReturnMacroStabilityInwardsPreconsolidationStress()
+        {
+            // Setup
+            var random = new Random(21);
+            var preconsolidationStress = new PreconsolidationStress
+            {
+                XCoordinate = random.NextDouble(),
+                ZCoordinate = random.NextDouble(),
+                PreconsolidationStressDistributionType = 3,
+                PreconsolidationStressMean = random.NextDouble(),
+                PreconsolidationStressCoefficientOfVariation = random.NextDouble(),
+                PreconsolidationStressShift = 0
+            };
+
+            // Call
+            MacroStabilityInwardsPreconsolidationStress transformedStress =
+                MacroStabilityInwardsPreconsolidationStressTransformer.Transform(preconsolidationStress);
+
+            // Assert
+            Assert.AreEqual(preconsolidationStress.XCoordinate, transformedStress.XCoordinate);
+            Assert.AreEqual(preconsolidationStress.ZCoordinate, transformedStress.ZCoordinate);
+            Assert.AreEqual(preconsolidationStress.PreconsolidationStressMean, transformedStress.PreconsolidationStressMean);
+            Assert.AreEqual(preconsolidationStress.PreconsolidationStressCoefficientOfVariation,
+                            transformedStress.PreconsolidationStressCoefficientOfVariation);
+        }
+
+        [Test]
+        [TestCaseSource(nameof(GetInvalidPreconsolidationStress))]
+        public void Transform_InvalidPreconsolidationStressValues_ThrowsImportedDataTransformException(
+            PreconsolidationStress preconsolidationStress,
+            string parameterName)
+        {
+            // Call
+            TestDelegate call = () => MacroStabilityInwardsPreconsolidationStressTransformer.Transform(preconsolidationStress);
+
+            // Assert
+            var exception = Assert.Throws<ImportedDataTransformException>(call);
+            string expectedMessage = $"De waarde voor '{parameterName}' moet een concreet getal zijn.";
+            Assert.AreEqual(expectedMessage, exception.Message);
+            Assert.IsInstanceOf<ArgumentException>(exception.InnerException);
+        }
+
+        [Test]
+        [TestCaseSource(nameof(GetInvalidStochastConfiguration))]
+        public void Transform_InvalidStochasticDistributionProperties_ThrowsImportedDataTransformException(
+            PreconsolidationStress preconsolidationStress)
+        {
+            // Call
+            TestDelegate call = () => MacroStabilityInwardsPreconsolidationStressTransformer.Transform(preconsolidationStress);
+
+            // Assert
+            var exception = Assert.Throws<ImportedDataTransformException>(call);
+            Assert.AreEqual($"Parameter 'Grensspanning' is niet lognormaal verdeeld.", exception.Message);
+        }
+
+        private static IEnumerable<TestCaseData> GetInvalidStochastConfiguration()
+        {
+            var random = new Random(21);
+
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                PreconsolidationStressDistributionType = random.Next(),
+                PreconsolidationStressShift = 0
+            }).SetName("Invalid DistributionType");
+
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                PreconsolidationStressDistributionType = 3,
+                PreconsolidationStressShift = random.NextDouble()
+            }).SetName("Invalid Shift");
+        }
+
+        private static IEnumerable<TestCaseData> GetInvalidPreconsolidationStress()
+        {
+            var random = new Random(21);
+            double xCoordinate = random.NextDouble();
+            double zCoordinate = random.NextDouble();
+            double preconsolidationStressMean = random.NextDouble();
+            double preconsolidationStressCoefficientOfVariation = random.NextDouble();
+
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                ZCoordinate = zCoordinate,
+                PreconsolidationStressMean = preconsolidationStressMean,
+                PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
+            }, "X-coördinaat").SetName("Invalid XCoordinate");
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                XCoordinate = xCoordinate,
+                PreconsolidationStressMean = preconsolidationStressMean,
+                PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
+            }, "Z-coördinaat").SetName("Invalid ZCoordinate");
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                XCoordinate = xCoordinate,
+                ZCoordinate = zCoordinate,
+                PreconsolidationStressCoefficientOfVariation = preconsolidationStressCoefficientOfVariation
+            }, "gemiddelde").SetName("Invalid Mean");
+            yield return new TestCaseData(new PreconsolidationStress
+            {
+                XCoordinate = xCoordinate,
+                ZCoordinate = zCoordinate,
+                PreconsolidationStressMean = preconsolidationStressMean
+            }, "variatiecoëfficient").SetName("Invalid Coefficient of Variation");
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/SoilProfiles/PipingSoilLayerTransformer.cs
===================================================================
diff -u -r4d10bc0d4756085a58be2734b2877cead7f47973 -r604dfe021f6161f8e5d107dd5821ba06390c5ecf
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/SoilProfiles/PipingSoilLayerTransformer.cs	(.../PipingSoilLayerTransformer.cs)	(revision 4d10bc0d4756085a58be2734b2877cead7f47973)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/SoilProfiles/PipingSoilLayerTransformer.cs	(.../PipingSoilLayerTransformer.cs)	(revision 604dfe021f6161f8e5d107dd5821ba06390c5ecf)
@@ -124,14 +124,14 @@
         /// stochastic parameters is not defined as lognormal or is shifted when it should not be.</exception>
         private static void ValidateStochasticParameters(SoilLayerBase soilLayer)
         {
-            SoilLayerDistributionHelper.ValidateIsLogNormal(
+            DistributionHelper.ValidateIsLogNormal(
                 soilLayer.BelowPhreaticLevelDistributionType,
                 Resources.SoilLayer_BelowPhreaticLevelDistribution_Description);
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.DiameterD70DistributionType,
                 soilLayer.DiameterD70Shift,
                 Resources.SoilLayer_DiameterD70Distribution_Description);
-            SoilLayerDistributionHelper.ValidateIsNonShiftedLogNormal(
+            DistributionHelper.ValidateIsNonShiftedLogNormal(
                 soilLayer.PermeabilityDistributionType,
                 soilLayer.PermeabilityShift,
                 Resources.SoilLayer_PermeabilityDistribution_Description);