Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresCalculation.cs
===================================================================
diff -u -rb784ac8be54e88a798f4b7b7ad54ffe47b587e20 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresCalculation.cs	(.../HeightStructuresCalculation.cs)	(revision b784ac8be54e88a798f4b7b7ad54ffe47b587e20)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresCalculation.cs	(.../HeightStructuresCalculation.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Base;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.HeightStructures.Data.Properties;
@@ -33,9 +34,11 @@
         /// <summary>
         /// Creates a new instance of <see cref="HeightStructuresCalculation"/>.
         /// </summary>
-        public HeightStructuresCalculation()
+        /// <param name="generalInputParameters">General grass cover erosion inwards calculation input parameters that apply to each calculation.</param>
+        /// <exception cref="ArgumentNullException">When <paramref name="generalInputParameters"/> is <c>null</c>.</exception>
+        public HeightStructuresCalculation(GeneralHeightStructuresInput generalInputParameters)
         {
-            InputParameters = new HeightStructuresInput(new GeneralHeightStructuresInput());
+            InputParameters = new HeightStructuresInput(generalInputParameters);
             Name = Resources.HeightStructuresCalculation_DefaultName;
         }
 
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs
===================================================================
diff -u -re24eab2c6007074685556ec97dbe45940a520687 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision e24eab2c6007074685556ec97dbe45940a520687)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresFailureMechanism.cs	(.../HeightStructuresFailureMechanism.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -45,6 +45,7 @@
             sectionResults = new List<HeightStructuresFailureMechanismSectionResult>();
             CalculationsGroup = new CalculationGroup(RingtoetsCommonDataResources.FailureMechanism_Calculations_DisplayName, false);
             NormProbabilityInput = new NormProbabilityInput();
+            GeneralInput = new GeneralHeightStructuresInput();
         }
 
         public override IEnumerable<ICalculation> Calculations
@@ -60,6 +61,11 @@
         /// </summary>
         public NormProbabilityInput NormProbabilityInput { get; private set; }
 
+        /// <summary>
+        /// Gets the height structures calculation input parameters that apply to each calculation.
+        /// </summary>
+        public GeneralHeightStructuresInput GeneralInput { get; private set; }
+
         public CalculationGroup CalculationsGroup { get; private set; }
 
         public IEnumerable<HeightStructuresFailureMechanismSectionResult> SectionResults
Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs
===================================================================
diff -u -re24eab2c6007074685556ec97dbe45940a520687 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs	(.../HeightStructuresGuiPlugin.cs)	(revision e24eab2c6007074685556ec97dbe45940a520687)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Plugin/HeightStructuresGuiPlugin.cs	(.../HeightStructuresGuiPlugin.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -264,7 +264,7 @@
 
         private static void AddCalculation(HeightStructuresCalculationGroupContext context)
         {
-            var calculation = new HeightStructuresCalculation
+            var calculation = new HeightStructuresCalculation(context.FailureMechanism.GeneralInput)
             {
                 Name = NamingHelper.GetUniqueName(context.WrappedData.Children, HeightStructuresDataResources.HeightStructuresCalculation_DefaultName, c => c.Name)
             };
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresCalculationTest.cs
===================================================================
diff -u -r47d80506f9f8166de93579dbba94e57f4101927b -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresCalculationTest.cs	(.../HeightStructuresCalculationTest.cs)	(revision 47d80506f9f8166de93579dbba94e57f4101927b)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresCalculationTest.cs	(.../HeightStructuresCalculationTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Base;
 using NUnit.Framework;
 using Ringtoets.Common.Data.Calculation;
@@ -29,10 +30,24 @@
     public class HeightStructuresCalculationTest
     {
         [Test]
+        public void Constructor_NullGeneralInput_ThrowsArgumentNullException()
+        {
+            // Setup & Call
+            TestDelegate test = () => new HeightStructuresCalculation(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("generalInputParameters", exception.ParamName);
+        }
+
+        [Test]
         public void Constructor_DefaultPropertyValuesAreSet()
         {
+            // Setup
+            var generalInput = new GeneralHeightStructuresInput();
+
             // Call
-            var calculation = new HeightStructuresCalculation();
+            var calculation = new HeightStructuresCalculation(generalInput);
 
             // Assert
             Assert.IsInstanceOf<ICalculation>(calculation);
@@ -47,7 +62,8 @@
         public void ClearOutput_Always_SetsOutputToNull()
         {
             // Setup
-            var calculation = new HeightStructuresCalculation
+            var generalInput = new GeneralHeightStructuresInput();
+            var calculation = new HeightStructuresCalculation(generalInput)
             {
                 Output = new HeightStructuresOutput()
             };
@@ -63,7 +79,8 @@
         public void HasOutput_OutputNull_ReturnsFalse()
         {
             // Setup
-            var calculation = new HeightStructuresCalculation
+            var generalInput = new GeneralHeightStructuresInput();
+            var calculation = new HeightStructuresCalculation(generalInput)
             {
                 Output = null
             };
@@ -76,7 +93,8 @@
         public void HasOutput_OutputSet_ReturnsTrue()
         {
             // Setup
-            var calculation = new HeightStructuresCalculation
+            var generalInput = new GeneralHeightStructuresInput();
+            var calculation = new HeightStructuresCalculation(generalInput)
             {
                 Output = new HeightStructuresOutput()
             };
@@ -89,7 +107,8 @@
         public void GetObservableInput_Always_ReturnsInputParameters()
         {
             // Setup
-            var calculation = new HeightStructuresCalculation();
+            var generalInput = new GeneralHeightStructuresInput();
+            var calculation = new HeightStructuresCalculation(generalInput);
 
             // Call
             ICalculationInput input = calculation.GetObservableInput();
@@ -102,7 +121,8 @@
         public void GetObservableOutput_Always_ReturnsOutput()
         {
             // Setup
-            var calculation = new HeightStructuresCalculation
+            var generalInput = new GeneralHeightStructuresInput();
+            var calculation = new HeightStructuresCalculation(generalInput)
             {
                 Output = new HeightStructuresOutput()
             };
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs
===================================================================
diff -u -re24eab2c6007074685556ec97dbe45940a520687 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision e24eab2c6007074685556ec97dbe45940a520687)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Data.Test/HeightStructuresFailureMechanismTest.cs	(.../HeightStructuresFailureMechanismTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -47,6 +47,7 @@
             Assert.IsNotNull(failureMechanism.CalculationsGroup);
             CollectionAssert.IsEmpty(failureMechanism.CalculationsGroup.Children);
             Assert.IsNotNull(failureMechanism.NormProbabilityInput);
+            Assert.IsInstanceOf<GeneralHeightStructuresInput>(failureMechanism.GeneralInput);
         }
 
         [Test]
@@ -98,16 +99,17 @@
         {
             // Setup
             var mocks = new MockRepository();
+            var generalInput = new GeneralHeightStructuresInput();
             var failureMechanism = new HeightStructuresFailureMechanism
             {
                 CalculationsGroup =
                 {
                     Children =
                     {
                         new CalculationGroup(),
-                        new HeightStructuresCalculation(),
+                        new HeightStructuresCalculation(generalInput),
                         mocks.StrictMock<ICalculation>(),
-                        new HeightStructuresCalculation()
+                        new HeightStructuresCalculation(generalInput)
                     }
                 }
             };
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PresentationObjects/HeightStructuresCalculationContextTest.cs
===================================================================
diff -u -r255ffcdbfd4ffff68c336ad9922e6196636c2803 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PresentationObjects/HeightStructuresCalculationContextTest.cs	(.../HeightStructuresCalculationContextTest.cs)	(revision 255ffcdbfd4ffff68c336ad9922e6196636c2803)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/PresentationObjects/HeightStructuresCalculationContextTest.cs	(.../HeightStructuresCalculationContextTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -43,19 +43,19 @@
         public void ConstructorWithData_Always_ExpectedPropertiesSet()
         {
             // Setup
-            var calculationMock = mocksRepository.StrictMock<HeightStructuresCalculation>();
-            var failureMechanismMock = mocksRepository.StrictMock<HeightStructuresFailureMechanism>();
+            var failureMechanism = new HeightStructuresFailureMechanism();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
             var assessmentSectionMock = mocksRepository.StrictMock<IAssessmentSection>();
             mocksRepository.ReplayAll();
 
             // Call
-            var context = new HeightStructuresCalculationContext(calculationMock, failureMechanismMock, assessmentSectionMock);
+            var context = new HeightStructuresCalculationContext(calculation, failureMechanism, assessmentSectionMock);
 
             // Assert
             Assert.IsInstanceOf<HeightStructuresContext<HeightStructuresCalculation>>(context);
             Assert.IsInstanceOf<ICalculationContext<HeightStructuresCalculation, HeightStructuresFailureMechanism>>(context);
-            Assert.AreEqual(calculationMock, context.WrappedData);
-            Assert.AreEqual(failureMechanismMock, context.FailureMechanism);
+            Assert.AreEqual(calculation, context.WrappedData);
+            Assert.AreEqual(failureMechanism, context.FailureMechanism);
             Assert.AreEqual(assessmentSectionMock, context.AssessmentSection);
             mocksRepository.VerifyAll();
         }
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -r1c8a44983627b9d580cbbeab3c8444c5ecc41524 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationContextTreeNodeInfoTest.cs)	(revision 1c8a44983627b9d580cbbeab3c8444c5ecc41524)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationContextTreeNodeInfoTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -95,8 +95,8 @@
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new HeightStructuresCalculation();
             var failureMechanism = new HeightStructuresFailureMechanism();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
             var calculationContext = new HeightStructuresCalculationContext(calculation, failureMechanism, assessmentSectionMock);
 
             // Call
@@ -125,11 +125,12 @@
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new HeightStructuresCalculation
+            var failureMechanism = new HeightStructuresFailureMechanism();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput)
             {
                 Output = new HeightStructuresOutput()
             };
-            var failureMechanism = new HeightStructuresFailureMechanism();
+
             var calculationContext = new HeightStructuresCalculationContext(calculation, failureMechanism, assessmentSectionMock);
 
             // Call
@@ -160,7 +161,7 @@
             var treeViewControlMock = mocks.StrictMock<TreeViewControl>();
             var failureMechanism = new HeightStructuresFailureMechanism();
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
-            var calculation = new HeightStructuresCalculation();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
             var nodeData = new HeightStructuresCalculationContext(calculation, failureMechanism, assessmentSectionMock);
             var menuBuilderMock = mocks.StrictMock<IContextMenuBuilder>();
 
@@ -199,7 +200,7 @@
             var treeViewControlMock = mocks.StrictMock<TreeViewControl>();
             var failureMechanism = new HeightStructuresFailureMechanism();
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
-            var calculation = new HeightStructuresCalculation();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
             var nodeData = new HeightStructuresCalculationContext(calculation, failureMechanism, assessmentSectionMock);
             var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
 
@@ -234,8 +235,8 @@
         {
             // Setup
             var group = new CalculationGroup();
-            var elementToBeRemoved = new HeightStructuresCalculation();
             var failureMechanism = new HeightStructuresFailureMechanism();
+            var elementToBeRemoved = new HeightStructuresCalculation(failureMechanism.GeneralInput);
             var observerMock = mocks.StrictMock<IObserver>();
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
             var calculationContext = new HeightStructuresCalculationContext(elementToBeRemoved,
@@ -250,7 +251,7 @@
             mocks.ReplayAll();
 
             group.Children.Add(elementToBeRemoved);
-            group.Children.Add(new HeightStructuresCalculation());
+            group.Children.Add(new HeightStructuresCalculation(failureMechanism.GeneralInput));
             group.Attach(observerMock);
 
             // Precondition
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r7cebb168afee29822b64f213045a21520b38ade0 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs)	(revision 7cebb168afee29822b64f213045a21520b38ade0)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -116,7 +116,7 @@
             var failureMechanism = new HeightStructuresFailureMechanism();
             var group = new CalculationGroup();
             var childGroup = new CalculationGroup();
-            var childCalculation = new HeightStructuresCalculation();
+            var childCalculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
 
             group.Children.Add(childGroup);
             group.Children.Add(calculationItemMock);
@@ -240,8 +240,8 @@
                                                                            failureMechanism,
                                                                            assessmentSectionMock);
             var parentGroupContext = new HeightStructuresCalculationGroupContext(parentGroup,
-                                                                     failureMechanism,
-                                                                     assessmentSectionMock);
+                                                                                 failureMechanism,
+                                                                                 assessmentSectionMock);
             var treeViewControlMock = mocks.StrictMock<TreeViewControl>();
             var menuBuilderMock = mocks.StrictMock<IContextMenuBuilder>();
 
@@ -377,9 +377,9 @@
             var failureMechanism = new HeightStructuresFailureMechanism();
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
             var nodeData = new HeightStructuresCalculationGroupContext(group,
-                                                                               failureMechanism,
-                                                                               assessmentSectionMock);
-            var calculation = new HeightStructuresCalculation
+                                                                       failureMechanism,
+                                                                       assessmentSectionMock);
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput)
             {
                 Name = "Nieuwe berekening"
             };
@@ -461,7 +461,7 @@
             var parentNodeData = new HeightStructuresCalculationGroupContext(parentGroup,
                                                                              failureMechanism,
                                                                              assessmentSectionMock);
-            var calculation = new HeightStructuresCalculation();
+            var calculation = new HeightStructuresCalculation(failureMechanism.GeneralInput);
 
             observerMock.Expect(o => o.UpdateObserver());
 
@@ -491,4 +491,4 @@
         private const int contextMenuCalculateAllIndexNestedGroup = 3;
         private const int contextMenuClearAllIndexNestedGroup = 4;
     }
-}
+}
\ No newline at end of file
Index: Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresInputContextTreeNodeInfoTest.cs
===================================================================
diff -u -rb784ac8be54e88a798f4b7b7ad54ffe47b587e20 -rb60b7e12cf211bdbe11e0a54734fa097e8ef2146
--- Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresInputContextTreeNodeInfoTest.cs	(.../HeightStructuresInputContextTreeNodeInfoTest.cs)	(revision b784ac8be54e88a798f4b7b7ad54ffe47b587e20)
+++ Ringtoets/HeightStructures/test/Ringtoets.HeightStructures.Forms.Test/TreeNodeInfos/HeightStructuresInputContextTreeNodeInfoTest.cs	(.../HeightStructuresInputContextTreeNodeInfoTest.cs)	(revision b60b7e12cf211bdbe11e0a54734fa097e8ef2146)
@@ -78,10 +78,11 @@
         public void Text_Always_ReturnsTextFromResource()
         {
             // Setup
+            var generalInput = new GeneralHeightStructuresInput();
             var assessmentSectionMock = mocksRepository.StrictMock<IAssessmentSection>();
             var heightStructuresInputContext = new HeightStructuresInputContext(
                 new HeightStructuresInput(new GeneralHeightStructuresInput()),
-                new HeightStructuresCalculation(),
+                new HeightStructuresCalculation(generalInput),
                 new HeightStructuresFailureMechanism(),
                 assessmentSectionMock);
 
@@ -100,9 +101,10 @@
         {
             // Setup
             var assessmentSectionMock = mocksRepository.StrictMock<IAssessmentSection>();
+            var generalInput = new GeneralHeightStructuresInput();
             var heightStructuresInputContext = new HeightStructuresInputContext(
                 new HeightStructuresInput(new GeneralHeightStructuresInput()),
-                new HeightStructuresCalculation(),
+                new HeightStructuresCalculation(generalInput),
                 new HeightStructuresFailureMechanism(),
                 assessmentSectionMock);