Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs
===================================================================
diff -u -rcf2dc4330cecec3b8c8acae9e195280323fc2a50 -rd9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs	(.../NormalDistributionDesignVariable.cs)	(revision cf2dc4330cecec3b8c8acae9e195280323fc2a50)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs	(.../NormalDistributionDesignVariable.cs)	(revision d9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5)
@@ -23,8 +23,15 @@
 
 namespace Ringtoets.Common.Data.Probabilistics
 {
+    /// <summary>
+    /// This class defines a design variable for a normal distribution.
+    /// </summary>
     public class NormalDistributionDesignVariable : DesignVariable<NormalDistribution>
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalDistributionDesignVariable"/> class.
+        /// </summary>
+        /// <param name="distribution">A normal distribution.</param>
         public NormalDistributionDesignVariable(NormalDistribution distribution) : base(distribution) {}
 
         public override RoundedDouble GetDesignValue()
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/TruncatedNormalDistribution.cs
===================================================================
diff -u
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/TruncatedNormalDistribution.cs	(revision 0)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/TruncatedNormalDistribution.cs	(revision d9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5)
@@ -0,0 +1,79 @@
+// Copyright (C) Stichting Deltares 2016. 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 Core.Common.Base.Data;
+
+namespace Ringtoets.Common.Data.Probabilistics
+{
+    /// <summary>
+    /// Class representing a truncated normal distribution expressed in terms of standard
+    /// deviation.
+    /// </summary>
+    public class TruncatedNormalDistribution : NormalDistribution
+    {
+        private RoundedDouble lowerBoundary;
+        private RoundedDouble upperBoundary;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TruncatedNormalDistribution"/> class.
+        /// </summary>
+        /// <param name="numberOfDecimalPlaces">The number of decimal places of the distribution.</param>
+        /// <exception cref="ArgumentOutOfRangeException">
+        /// Thrown when <paramref name="numberOfDecimalPlaces"/> is not in range [0, <see cref="RoundedDouble.MaximumNumberOfDecimalPlaces"/>].
+        /// </exception>
+        public TruncatedNormalDistribution(int numberOfDecimalPlaces) : base(numberOfDecimalPlaces)
+        {
+            lowerBoundary = new RoundedDouble(numberOfDecimalPlaces);
+            upperBoundary = new RoundedDouble(numberOfDecimalPlaces);
+        }
+
+        /// <summary>X
+        /// Gets or sets the lower boundary of the distribution.
+        /// </summary>
+        public RoundedDouble LowerBoundary
+        {
+            get
+            {
+                return lowerBoundary;
+            }
+            set
+            {
+                lowerBoundary = value.ToPrecision(lowerBoundary.NumberOfDecimalPlaces);
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets the upper boundary of the distribution.
+        /// </summary>
+        public RoundedDouble UpperBoundary
+        {
+            get
+            {
+                return upperBoundary;
+            }
+            set
+            {
+                upperBoundary = value.ToPrecision(upperBoundary.NumberOfDecimalPlaces);
+            }
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj
===================================================================
diff -u -rb4e3629ea2130359117dd403af8db3c8ae0c680b -rd9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5
--- Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj	(.../Ringtoets.Common.Data.csproj)	(revision b4e3629ea2130359117dd403af8db3c8ae0c680b)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj	(.../Ringtoets.Common.Data.csproj)	(revision d9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5)
@@ -52,6 +52,7 @@
     <Compile Include="DikeProfiles\IUseForeshore.cs" />
     <Compile Include="FailureMechanism\AssessmentLayerOneState.cs" />
     <Compile Include="Probabilistics\IVariationCoefficientDistribution.cs" />
+    <Compile Include="Probabilistics\TruncatedNormalDistribution.cs" />
     <Compile Include="Probabilistics\VariationCoefficientLogNormalDistribution.cs" />
     <Compile Include="Probabilistics\VariationCoefficientNormalDistribution.cs" />
     <Compile Include="Probability\EmptyProbabilityAssessmentOutput.cs" />
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/TruncatedNormalDistributionTest.cs
===================================================================
diff -u
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/TruncatedNormalDistributionTest.cs	(revision 0)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/TruncatedNormalDistributionTest.cs	(revision d9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5)
@@ -0,0 +1,133 @@
+// Copyright (C) Stichting Deltares 2016. 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 Core.Common.Base.Data;
+using Core.Common.TestUtil;
+using NUnit.Framework;
+using Ringtoets.Common.Data.Probabilistics;
+
+namespace Ringtoets.Common.Data.Test.Probabilistics
+{
+    [TestFixture]
+    public class TruncatedNormalDistributionTest
+    {
+        [Test]
+        [TestCase(0)]
+        [TestCase(2)]
+        [TestCase(15)]
+        public void DefaultConstructor_ExpectedValues(int numberOfDecimalPlaces)
+        {
+            // Call
+            var distribution = new TruncatedNormalDistribution(numberOfDecimalPlaces);
+
+            // Assert
+            Assert.IsInstanceOf<NormalDistribution>(distribution);
+            Assert.AreEqual(0.0, distribution.Mean.Value);
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.Mean.NumberOfDecimalPlaces);
+            Assert.AreEqual(1.0, distribution.StandardDeviation.Value);
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.0, distribution.LowerBoundary.Value);
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.LowerBoundary.NumberOfDecimalPlaces);
+            Assert.AreEqual(0.0, distribution.UpperBoundary.Value);
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.UpperBoundary.NumberOfDecimalPlaces);
+        }
+
+        [Test]
+        public void Mean_SetNewValue_GetValueRoundedToGivenNumberOfDecimalPlaces()
+        {
+            // Setup
+            var value = 1.23456789;
+            var numberOfDecimalPlaces = 4;
+            var distribution = new TruncatedNormalDistribution(numberOfDecimalPlaces);
+
+            // Call
+            distribution.Mean = (RoundedDouble)value;
+
+            // Assert
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.Mean.NumberOfDecimalPlaces);
+            Assert.AreEqual(new RoundedDouble(numberOfDecimalPlaces, value), distribution.Mean);
+        }
+
+        [Test]
+        [TestCase(1.23456789)]
+        [TestCase(0 - 1e-3, Description = "Valid standard deviation due to rounding to 0.0")]
+        public void StandardDeviation_SetNewValue_GetValueRoundedToGivenNumberOfDecimalPlaces(double standardDeviation)
+        {
+            // Setup
+            var numberOfDecimalPlaces = 2;
+            var distribution = new TruncatedNormalDistribution(numberOfDecimalPlaces);
+
+            // Call
+            distribution.StandardDeviation = (RoundedDouble)standardDeviation;
+
+            // Assert
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.StandardDeviation.NumberOfDecimalPlaces);
+            Assert.AreEqual(new RoundedDouble(numberOfDecimalPlaces, standardDeviation), distribution.StandardDeviation);
+        }
+
+        [Test]
+        [TestCase(-4)]
+        [TestCase(0 - 1e-2)]
+        public void StandardDeviation_SettingToLessThan0_ThrowArgumentOutOfRangeException(double standardDeviation)
+        {
+            // Setup
+            var distribution = new TruncatedNormalDistribution(2);
+
+            // Call
+            TestDelegate call = () => distribution.StandardDeviation = (RoundedDouble)standardDeviation;
+
+            // Assert
+            const string expectedMessage = "Standaardafwijking (\u03C3) moet groter zijn dan of gelijk zijn aan 0.";
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, expectedMessage);
+        }
+
+        [Test]
+        public void LowerBoundary_SetNewValue_GetValueRoundedToGivenNumberOfDecimalPlaces()
+        {
+            var value = 1.23456789;
+            var numberOfDecimalPlaces = 4;
+            var distribution = new TruncatedNormalDistribution(numberOfDecimalPlaces);
+
+            // Call
+            distribution.LowerBoundary = (RoundedDouble)value;
+
+            // Assert
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.LowerBoundary.NumberOfDecimalPlaces);
+            Assert.AreEqual(new RoundedDouble(numberOfDecimalPlaces, value), distribution.LowerBoundary);
+        }
+
+        [Test]
+        public void UpperBoundary_SetNewValue_GetValueRoundedToGivenNumberOfDecimalPlaces()
+        {
+            var value = 1.23456789;
+            var numberOfDecimalPlaces = 4;
+            var distribution = new TruncatedNormalDistribution(numberOfDecimalPlaces);
+
+            // Call
+            distribution.UpperBoundary = (RoundedDouble)value;
+
+            // Assert
+            Assert.AreEqual(numberOfDecimalPlaces, distribution.UpperBoundary.NumberOfDecimalPlaces);
+            Assert.AreEqual(new RoundedDouble(numberOfDecimalPlaces, value), distribution.UpperBoundary);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj
===================================================================
diff -u -rb4e3629ea2130359117dd403af8db3c8ae0c680b -rd9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj	(.../Ringtoets.Common.Data.Test.csproj)	(revision b4e3629ea2130359117dd403af8db3c8ae0c680b)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj	(.../Ringtoets.Common.Data.Test.csproj)	(revision d9ca53f8fa89c230d499c7ac28b3b0b8e9290fe5)
@@ -61,6 +61,7 @@
     <Compile Include="Calculation\CalculationGroupTest.cs" />
     <Compile Include="DikeProfiles\DikeProfileTest.cs" />
     <Compile Include="DikeProfiles\ForeshoreProfileTest.cs" />
+    <Compile Include="Probabilistics\TruncatedNormalDistributionTest.cs" />
     <Compile Include="Probabilistics\VariationCoefficientLogNormalDistributionTest.cs" />
     <Compile Include="Probabilistics\VariationCoefficientNormalDistributionTest.cs" />
     <Compile Include="Probability\ProbabilityAssessmentOutputTest.cs" />