Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/GeneralPipingInput.cs
===================================================================
diff -u
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/GeneralPipingInput.cs	(revision 0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/GeneralPipingInput.cs	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -0,0 +1,148 @@
+// 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 Core.Common.Base;
+
+namespace Ringtoets.Piping.Data
+{
+    /// <summary>
+    /// Class that holds all the overarching piping calculation input parameters, e.g. the
+    /// values that apply for all calculations.
+    /// </summary>
+    public class GeneralPipingInput : Observable
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GeneralPipingInput"/> class.
+        /// </summary>
+        public GeneralPipingInput()
+        {
+            UpliftModelFactor = 1.0;
+            SellmeijerModelFactor = 1.0;
+            WaterVolumetricWeight = 10.0;
+            CriticalHeaveGradient = 0.3;
+            SandParticlesVolumicWeight = 16.5;
+            WhitesDragCoefficient = 0.25;
+            BeddingAngle = 37;
+            WaterKinematicViscosity = 1.33e-6;
+            Gravity = 9.81;
+            MeanDiameter70 = 2.08e-4;
+            SellmeijerReductionFactor = 0.3;
+            A = 1.0;
+            B = 350.0;
+        }
+
+        #region Model Factors
+
+        /// <summary>
+        /// Gets the calculation value used to account for uncertainty in the model for uplift.
+        /// </summary>
+        public double UpliftModelFactor { get; private set; }
+
+        /// <summary>
+        /// Gets the calculation value used to account for uncertainty in the model for Sellmeijer.
+        /// </summary>
+        public double SellmeijerModelFactor { get; private set; }
+
+        #endregion
+
+        #region General parameters (use by multiple calculations)
+
+        /// <summary>
+        /// Gets the volumetric weight of water.
+        /// [kN/m³]
+        /// </summary>
+        public double WaterVolumetricWeight { get; private set; }
+
+        #endregion
+
+        #region Heave specific parameters
+
+        /// <summary>
+        /// Gets the critical exit gradient for heave.
+        /// </summary>
+        public double CriticalHeaveGradient { get; private set; }
+
+        #endregion
+
+        #region Sellmeijer specific parameters
+
+        /// <summary>
+        /// Gets the (lowerbound) volumic weight of sand grain material of a sand layer 
+        /// under water.
+        /// [kN/m³]
+        /// </summary>
+        public double SandParticlesVolumicWeight { get; private set; }
+
+        /// <summary>
+        /// Gets the White's drag coefficient.
+        /// </summary>
+        public double WhitesDragCoefficient { get; private set; }
+
+        /// <summary>
+        /// Gets the angle of the force balance representing the amount in which sand 
+        /// grains resist rolling.
+        /// [°]
+        /// </summary>
+        public double BeddingAngle { get; private set; }
+
+        /// <summary>
+        /// Gets the kinematic viscosity of water at 10 degrees Celsius.
+        /// [m²/s]
+        /// </summary>
+        public double WaterKinematicViscosity { get; private set; }
+
+        /// <summary>
+        /// Gets the gravitational acceleration.
+        /// [m/s²]
+        /// </summary>
+        public double Gravity { get; private set; }
+
+        /// <summary>
+        /// Gets the mean diameter of small scale tests applied to different kinds of sand, 
+        /// on which the formula of Sellmeijer has been fit.
+        /// [m]
+        /// </summary>
+        public double MeanDiameter70 { get; private set; }
+
+        /// <summary>
+        /// Gets the reduction factor Sellmeijer.
+        /// </summary>
+        public double SellmeijerReductionFactor { get; private set; }
+
+        #endregion
+
+        #region Semi-probabilistic parameters
+
+        /// <summary>
+        /// Gets 'a' parameter used to factor in the 'length effect' when determining the
+        /// maximum tolerated probability of failure.
+        /// </summary>
+        public double A { get; private set; }
+
+        /// <summary>
+        /// Gets 'b' parameter used to factor in the 'length effect' when determining the
+        /// maximum tolerated probability of failure.
+        /// </summary>
+        public double B { get; private set; }
+
+        #endregion
+    }
+}
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs
===================================================================
diff -u -r80aeb6fb275f0d7ea3f470bb8ba0ef0fc5caa113 -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 80aeb6fb275f0d7ea3f470bb8ba0ef0fc5caa113)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -20,10 +20,12 @@
 // All rights reserved.
 
 using System.Collections.Generic;
+
 using Core.Common.Base;
+
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Placeholder;
-using Ringtoets.Piping.Data.Properties;
+
 using RingtoetsCommonDataResources = Ringtoets.Common.Data.Properties.Resources;
 using PipingDataResources = Ringtoets.Piping.Data.Properties.Resources;
 
@@ -40,15 +42,24 @@
         public PipingFailureMechanism()
             : base(PipingDataResources.PipingFailureMechanism_DisplayName)
         {
+            GeneralInput = new GeneralPipingInput();
             SurfaceLines = new ObservableList<RingtoetsPipingSurfaceLine>();
             SoilProfiles = new ObservableList<PipingSoilProfile>();
             BoundaryConditions = new InputPlaceholder(RingtoetsCommonDataResources.FailureMechanism_BoundaryConditions_DisplayName);
-            var pipingCalculationGroup = new PipingCalculationGroup(Resources.PipingFailureMechanism_Calculations_DisplayName, false);
+            var pipingCalculationGroup = new PipingCalculationGroup(PipingDataResources.PipingFailureMechanism_Calculations_DisplayName, false);
             pipingCalculationGroup.Children.Add(new PipingCalculation());
             CalculationsGroup = pipingCalculationGroup;
             AssessmentResult = new OutputPlaceholder(RingtoetsCommonDataResources.FailureMechanism_AssessmentResult_DisplayName);
         }
 
+        public override IEnumerable<ICalculationItem> CalculationItems
+        {
+            get
+            {
+                return CalculationsGroup.GetPipingCalculations();
+            }
+        }
+
         /// <summary>
         /// Gets the available <see cref="RingtoetsPipingSurfaceLine"/> within the scope of the piping failure mechanism.
         /// </summary>
@@ -74,12 +85,9 @@
         /// </summary>
         public OutputPlaceholder AssessmentResult { get; private set; }
 
-        public override IEnumerable<ICalculationItem> CalculationItems
-        {
-            get
-            {
-                return CalculationsGroup.GetPipingCalculations();
-            }
-        }
+        /// <summary>
+        /// Gets the general piping calculation input parameters that apply to each piping calculation.
+        /// </summary>
+        public GeneralPipingInput GeneralInput { get; private set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs
===================================================================
diff -u -rbbfd376aee76613b471f70d2b1214d7e7b08fb1f -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs	(.../PipingInput.cs)	(revision bbfd376aee76613b471f70d2b1214d7e7b08fb1f)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingInput.cs	(.../PipingInput.cs)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -28,7 +28,8 @@
 namespace Ringtoets.Piping.Data
 {
     /// <summary>
-    /// Class that holds all piping calculation input parameters.
+    /// Class that holds all piping calculation specific input parameters, e.g. the values
+    /// that can differ various calculations.
     /// </summary>
     public class PipingInput : Observable
     {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj
===================================================================
diff -u -rdaf4bf00e8ea376485f54faa2fee8497607ddfb0 -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj	(.../Ringtoets.Piping.Data.csproj)	(revision daf4bf00e8ea376485f54faa2fee8497607ddfb0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/Ringtoets.Piping.Data.csproj	(.../Ringtoets.Piping.Data.csproj)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -54,6 +54,7 @@
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
     <Compile Include="Exceptions\RingtoetsPipingSurfaceLineException.cs" />
+    <Compile Include="GeneralPipingInput.cs" />
     <Compile Include="IPipingCalculationItem.cs" />
     <Compile Include="IPipingCalculationItemExtensions.cs" />
     <Compile Include="PipingCalculation.cs" />
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/GeneralPipingInputTest.cs
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/GeneralPipingInputTest.cs	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/GeneralPipingInputTest.cs	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -0,0 +1,38 @@
+using Core.Common.Base;
+
+using NUnit.Framework;
+
+namespace Ringtoets.Piping.Data.Test
+{
+    [TestFixture]
+    public class GeneralPipingInputTest
+    {
+        [Test]
+        public void Constructor_ExpectedValues()
+        {
+            // Call
+            var inputParameters = new GeneralPipingInput();
+
+            // Assert
+            Assert.IsInstanceOf<Observable>(inputParameters);
+
+            Assert.AreEqual(1.0, inputParameters.UpliftModelFactor);
+            Assert.AreEqual(1.0, inputParameters.SellmeijerModelFactor);
+
+            Assert.AreEqual(10.0, inputParameters.WaterVolumetricWeight);
+
+            Assert.AreEqual(0.3, inputParameters.CriticalHeaveGradient);
+
+            Assert.AreEqual(16.5, inputParameters.SandParticlesVolumicWeight);
+            Assert.AreEqual(0.25, inputParameters.WhitesDragCoefficient);
+            Assert.AreEqual(37, inputParameters.BeddingAngle);
+            Assert.AreEqual(1.33e-6, inputParameters.WaterKinematicViscosity);
+            Assert.AreEqual(9.81, inputParameters.Gravity);
+            Assert.AreEqual(2.08e-4, inputParameters.MeanDiameter70);
+            Assert.AreEqual(0.3, inputParameters.SellmeijerReductionFactor);
+
+            Assert.AreEqual(1.0, inputParameters.A);
+            Assert.AreEqual(350.0, inputParameters.B);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs
===================================================================
diff -u -r76ace4042e4e8a92a0ba37e8e9a9373ed6cea951 -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision 76ace4042e4e8a92a0ba37e8e9a9373ed6cea951)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingFailureMechanismTest.cs	(.../PipingFailureMechanismTest.cs)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -27,6 +27,7 @@
 
             // assert
             Assert.IsInstanceOf<BaseFailureMechanism>(piping);
+            Assert.IsInstanceOf<GeneralPipingInput>(piping.GeneralInput);
             CollectionAssert.IsEmpty(piping.Sections);
             CollectionAssert.IsEmpty(piping.SurfaceLines);
             Assert.IsInstanceOf<ObservableList<RingtoetsPipingSurfaceLine>>(piping.SurfaceLines);
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingInputTest.cs
===================================================================
diff -u -rbbfd376aee76613b471f70d2b1214d7e7b08fb1f -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingInputTest.cs	(.../PipingInputTest.cs)	(revision bbfd376aee76613b471f70d2b1214d7e7b08fb1f)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingInputTest.cs	(.../PipingInputTest.cs)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -1,8 +1,6 @@
 using System;
 
 using Core.Common.Base;
-using Core.Common.Base.Geometry;
-using Core.Common.Base.Properties;
 using Core.Common.TestUtil;
 using NUnit.Framework;
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/Ringtoets.Piping.Data.Test.csproj
===================================================================
diff -u -rdaf4bf00e8ea376485f54faa2fee8497607ddfb0 -r67fc75b9da1684eb22a425825f63354146f908f5
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/Ringtoets.Piping.Data.Test.csproj	(.../Ringtoets.Piping.Data.Test.csproj)	(revision daf4bf00e8ea376485f54faa2fee8497607ddfb0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/Ringtoets.Piping.Data.Test.csproj	(.../Ringtoets.Piping.Data.Test.csproj)	(revision 67fc75b9da1684eb22a425825f63354146f908f5)
@@ -59,6 +59,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Exceptions\RingtoetsPipingSurfaceLineExceptionTest.cs" />
+    <Compile Include="GeneralPipingInputTest.cs" />
     <Compile Include="IPipingCalculationItemExtensionsTest.cs" />
     <Compile Include="PipingCalculationGroupTest.cs" />
     <Compile Include="PipingCalculationTest.cs" />