Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffInwards/GrassCoverSlipOffInwardsFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r86ffd1424dc9eb520f5530655e218526ac74da91 -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffInwards/GrassCoverSlipOffInwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverSlipOffInwardsFailureMechanismCreateExtensions.cs)	(revision 86ffd1424dc9eb520f5530655e218526ac74da91)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffInwards/GrassCoverSlipOffInwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverSlipOffInwardsFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -62,10 +62,7 @@
 
         private static void AddEntitiesForFailureMechanismMeta(GrassCoverSlipOffInwardsFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.GrassCoverSlipOffInwardsFailureMechanismMetaEntities.Add(new GrassCoverSlipOffInwardsFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.GrassCoverSlipOffInwardsFailureMechanismMetaEntities.Add(mechanism.Create<GrassCoverSlipOffInwardsFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffOutwards/GrassCoverSlipOffOutwardsFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r86ffd1424dc9eb520f5530655e218526ac74da91 -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffOutwards/GrassCoverSlipOffOutwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismCreateExtensions.cs)	(revision 86ffd1424dc9eb520f5530655e218526ac74da91)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/GrassCoverSlipOffOutwards/GrassCoverSlipOffOutwardsFailureMechanismCreateExtensions.cs	(.../GrassCoverSlipOffOutwardsFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -62,10 +62,7 @@
 
         private static void AddEntitiesForFailureMechanismMeta(GrassCoverSlipOffOutwardsFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.GrassCoverSlipOffOutwardsFailureMechanismMetaEntities.Add(new GrassCoverSlipOffOutwardsFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.GrassCoverSlipOffOutwardsFailureMechanismMetaEntities.Add(mechanism.Create<GrassCoverSlipOffOutwardsFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/IHasGeneralInputCreateExtensions.cs
===================================================================
diff -u
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/IHasGeneralInputCreateExtensions.cs	(revision 0)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/IHasGeneralInputCreateExtensions.cs	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -0,0 +1,42 @@
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
+//
+// This file is part of Riskeer.
+//
+// Riskeer 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 Riskeer.Common.Data.FailureMechanism;
+using Riskeer.Storage.Core.DbContext;
+
+namespace Riskeer.Storage.Core.Create
+{
+    /// <summary>
+    /// Extension methods for <see cref="IHasGeneralInput"/> related
+    /// to creating an implementation of <see cref="IStandAloneFailureMechanismMetaEntity"/>.
+    /// </summary>
+    internal static class IHasGeneralInputCreateExtensions
+    {
+        internal static TFailureMechanismMetaEntity Create<TFailureMechanismMetaEntity>(this IHasGeneralInput mechanism)
+            where TFailureMechanismMetaEntity : IStandAloneFailureMechanismMetaEntity, new()
+        {
+            return new TFailureMechanismMetaEntity
+            {
+                N = mechanism.GeneralInput.N
+            };
+        }
+    }
+}
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/Microstability/MicrostabilityFailureMechanismCreateExtensions.cs
===================================================================
diff -u -re2ee4730fc52b3e724cf7d2881aa9c641e767fca -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/Microstability/MicrostabilityFailureMechanismCreateExtensions.cs	(.../MicrostabilityFailureMechanismCreateExtensions.cs)	(revision e2ee4730fc52b3e724cf7d2881aa9c641e767fca)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/Microstability/MicrostabilityFailureMechanismCreateExtensions.cs	(.../MicrostabilityFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -59,13 +59,10 @@
                 section.MicrostabilitySectionResultEntities.Add(sectionResultEntity);
             }
         }
-        
+
         private static void AddEntitiesForFailureMechanismMeta(MicrostabilityFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.MicrostabilityFailureMechanismMetaEntities.Add(new MicrostabilityFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.MicrostabilityFailureMechanismMetaEntities.Add(mechanism.Create<MicrostabilityFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/StrengthStabilityLengthwise/StrengthStabilityLengthwiseConstructionFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r86ffd1424dc9eb520f5530655e218526ac74da91 -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/StrengthStabilityLengthwise/StrengthStabilityLengthwiseConstructionFailureMechanismCreateExtensions.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismCreateExtensions.cs)	(revision 86ffd1424dc9eb520f5530655e218526ac74da91)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/StrengthStabilityLengthwise/StrengthStabilityLengthwiseConstructionFailureMechanismCreateExtensions.cs	(.../StrengthStabilityLengthwiseConstructionFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -62,10 +62,8 @@
 
         private static void AddEntitiesForFailureMechanismMeta(StrengthStabilityLengthwiseConstructionFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.StrengthStabilityLengthwiseConstructionFailureMechanismMetaEntities.Add(new StrengthStabilityLengthwiseConstructionFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.StrengthStabilityLengthwiseConstructionFailureMechanismMetaEntities.Add(
+                mechanism.Create<StrengthStabilityLengthwiseConstructionFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/TechnicalInnovation/TechnicalInnovationFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r86ffd1424dc9eb520f5530655e218526ac74da91 -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/TechnicalInnovation/TechnicalInnovationFailureMechanismCreateExtensions.cs	(.../TechnicalInnovationFailureMechanismCreateExtensions.cs)	(revision 86ffd1424dc9eb520f5530655e218526ac74da91)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/TechnicalInnovation/TechnicalInnovationFailureMechanismCreateExtensions.cs	(.../TechnicalInnovationFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -62,10 +62,7 @@
 
         private static void AddEntitiesForFailureMechanismMeta(TechnicalInnovationFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.TechnicalInnovationFailureMechanismMetaEntities.Add(new TechnicalInnovationFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.TechnicalInnovationFailureMechanismMetaEntities.Add(mechanism.Create<TechnicalInnovationFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/src/Riskeer.Storage.Core/Create/WaterPressureAsphaltCover/WaterPressureAsphaltCoverFailureMechanismCreateExtensions.cs
===================================================================
diff -u -r86ffd1424dc9eb520f5530655e218526ac74da91 -r521d10695326519942a95db0d8746da32c586668
--- Riskeer/Storage/src/Riskeer.Storage.Core/Create/WaterPressureAsphaltCover/WaterPressureAsphaltCoverFailureMechanismCreateExtensions.cs	(.../WaterPressureAsphaltCoverFailureMechanismCreateExtensions.cs)	(revision 86ffd1424dc9eb520f5530655e218526ac74da91)
+++ Riskeer/Storage/src/Riskeer.Storage.Core/Create/WaterPressureAsphaltCover/WaterPressureAsphaltCoverFailureMechanismCreateExtensions.cs	(.../WaterPressureAsphaltCoverFailureMechanismCreateExtensions.cs)	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -62,10 +62,7 @@
 
         private static void AddEntitiesForFailureMechanismMeta(WaterPressureAsphaltCoverFailureMechanism mechanism, FailureMechanismEntity entity)
         {
-            entity.WaterPressureAsphaltCoverFailureMechanismMetaEntities.Add(new WaterPressureAsphaltCoverFailureMechanismMetaEntity
-            {
-                N = mechanism.GeneralInput.N
-            });
+            entity.WaterPressureAsphaltCoverFailureMechanismMetaEntities.Add(mechanism.Create<WaterPressureAsphaltCoverFailureMechanismMetaEntity>());
         }
     }
 }
\ No newline at end of file
Index: Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/IHasGeneralInputCreateExtensionsTest.cs
===================================================================
diff -u
--- Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/IHasGeneralInputCreateExtensionsTest.cs	(revision 0)
+++ Riskeer/Storage/test/Riskeer.Storage.Core.Test/Create/IHasGeneralInputCreateExtensionsTest.cs	(revision 521d10695326519942a95db0d8746da32c586668)
@@ -0,0 +1,56 @@
+// Copyright (C) Stichting Deltares 2021. All rights reserved.
+//
+// This file is part of Riskeer.
+//
+// Riskeer 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.TestUtil;
+using NUnit.Framework;
+using Rhino.Mocks;
+using Riskeer.Common.Data.FailureMechanism;
+using Riskeer.Storage.Core.Create;
+using Riskeer.Storage.Core.DbContext;
+
+namespace Riskeer.Storage.Core.Test.Create
+{
+    [TestFixture]
+    public class IHasGeneralInputCreateExtensionsTest
+    {
+        [Test]
+        public void Create_Always_ReturnsExpectedMetaEntity()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var failureMechanism = mocks.Stub<IHasGeneralInput>();
+            failureMechanism.GeneralInput.N = new Random().NextRoundedDouble(1, 20);
+
+            // Call
+            var metaEntity = failureMechanism.Create<TestFailureMechanismMetaEntity>();
+
+            // Assert
+            Assert.IsInstanceOf<IStandAloneFailureMechanismMetaEntity>(metaEntity);
+            Assert.AreEqual(failureMechanism.GeneralInput.N, metaEntity.N);
+        }
+
+        private class TestFailureMechanismMetaEntity : IStandAloneFailureMechanismMetaEntity
+        {
+            public double N { get; set; }
+        }
+    }
+}
\ No newline at end of file