Index: Ringtoets/Common/src/Ringtoets.Common.Data/Structures/IStructuresCalculationInput.cs
===================================================================
diff -u -r12cec002453a1828efc68633fbd25219632c6c47 -r6ebe864bf0138360fbba9a2772e9faf763287e8a
--- Ringtoets/Common/src/Ringtoets.Common.Data/Structures/IStructuresCalculationInput.cs	(.../IStructuresCalculationInput.cs)	(revision 12cec002453a1828efc68633fbd25219632c6c47)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Structures/IStructuresCalculationInput.cs	(.../IStructuresCalculationInput.cs)	(revision 6ebe864bf0138360fbba9a2772e9faf763287e8a)
@@ -19,16 +19,22 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Ringtoets.Common.Data.Calculation;
 
 namespace Ringtoets.Common.Data.Structures
 {
     /// <summary>
     /// Interface describing an object that is the input to a structures calculation.
     /// </summary>
+    public interface IStructuresCalculationInput : ICalculationInput, ICloneable {}
+
+    /// <summary>
+    /// Interface describing an object that is the input to a structures calculation.
+    /// </summary>
     /// <typeparam name="T">The type of the structure which can be assigned to the
     /// calculation.</typeparam>
-    public interface IStructuresCalculationInput<out T> : ICalculationInput where T : StructureBase
+    public interface IStructuresCalculationInput<out T> : IStructuresCalculationInput where T : StructureBase
     {
         /// <summary>
         /// Gets the structure.
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs
===================================================================
diff -u -radbf2699810c35ead18e88e52127546aab78c23c -r6ebe864bf0138360fbba9a2772e9faf763287e8a
--- Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs	(.../StructuresInputBase.cs)	(revision adbf2699810c35ead18e88e52127546aab78c23c)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Structures/StructuresInputBase.cs	(.../StructuresInputBase.cs)	(revision 6ebe864bf0138360fbba9a2772e9faf763287e8a)
@@ -43,13 +43,13 @@
         private static readonly Range<RoundedDouble> structureNormalOrientationValidityRange = new Range<RoundedDouble>(new RoundedDouble(structureNormalOrientationNumberOfDecimals),
                                                                                                                         new RoundedDouble(structureNormalOrientationNumberOfDecimals, 360));
 
-        private readonly NormalDistribution modelFactorSuperCriticalFlow;
-        private readonly LogNormalDistribution allowedLevelIncreaseStorage;
-        private readonly VariationCoefficientLogNormalDistribution storageStructureArea;
-        private readonly LogNormalDistribution flowWidthAtBottomProtection;
-        private readonly VariationCoefficientLogNormalDistribution criticalOvertoppingDischarge;
-        private readonly NormalDistribution widthFlowApertures;
-        private readonly VariationCoefficientLogNormalDistribution stormDuration;
+        private NormalDistribution modelFactorSuperCriticalFlow;
+        private LogNormalDistribution allowedLevelIncreaseStorage;
+        private VariationCoefficientLogNormalDistribution storageStructureArea;
+        private LogNormalDistribution flowWidthAtBottomProtection;
+        private VariationCoefficientLogNormalDistribution criticalOvertoppingDischarge;
+        private NormalDistribution widthFlowApertures;
+        private VariationCoefficientLogNormalDistribution stormDuration;
 
         private T structure;
         private RoundedDouble structureNormalOrientation;
@@ -148,6 +148,23 @@
         /// <remarks>When no structure is present, the input parameters are set to default values.</remarks>
         public abstract void SynchronizeStructureInput();
 
+        public object Clone()
+        {
+            var clone = (StructuresInputBase<T>) MemberwiseClone();
+
+            clone.modelFactorSuperCriticalFlow = (NormalDistribution) ModelFactorSuperCriticalFlow.Clone();
+            clone.allowedLevelIncreaseStorage = (LogNormalDistribution) AllowedLevelIncreaseStorage.Clone();
+            clone.storageStructureArea = (VariationCoefficientLogNormalDistribution) StorageStructureArea.Clone();
+            clone.flowWidthAtBottomProtection = (LogNormalDistribution) FlowWidthAtBottomProtection.Clone();
+            clone.criticalOvertoppingDischarge = (VariationCoefficientLogNormalDistribution) CriticalOvertoppingDischarge.Clone();
+            clone.widthFlowApertures = (NormalDistribution) WidthFlowApertures.Clone();
+            clone.stormDuration = (VariationCoefficientLogNormalDistribution) StormDuration.Clone();
+
+            clone.BreakWater = (BreakWater) BreakWater.Clone();
+
+            return clone;
+        }
+
         private void SetDefaultCommonStructureSchematizationProperties()
         {
             StructureNormalOrientation = RoundedDouble.NaN;