Index: Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs
===================================================================
diff -u -re2da467f67f436ca9923eb99821e3750d72c9cc1 -r476c10932cea472a1475d63d32c2ad019bc5c57a
--- Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs	(.../UpliftVanSlipPlane.cs)	(revision e2da467f67f436ca9923eb99821e3750d72c9cc1)
+++ Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs	(.../UpliftVanSlipPlane.cs)	(revision 476c10932cea472a1475d63d32c2ad019bc5c57a)
@@ -46,6 +46,7 @@
         {
             GridAutomaticDetermined = true;
             TangentLinesAutomaticAtBoundaries = true;
+            GridNumberOfRefinements = 1;
         }
 
         /// <summary>
@@ -67,6 +68,7 @@
         {
             SetGrids(leftGrid, rightGrid);
             TangentLinesAutomaticAtBoundaries = true;
+            GridNumberOfRefinements = 0;
         }
 
         /// <summary>
@@ -85,6 +87,7 @@
             : this(tangentZTop, tangentZBottom, tangentLineNumber)
         {
             SetGrids(leftGrid, rightGrid);
+            GridNumberOfRefinements = 0;
         }
 
         private UpliftVanSlipPlane(double tangentZTop, double tangentZBottom, int tangentLineNumber)
@@ -111,6 +114,11 @@
         public UpliftVanGrid RightGrid { get; private set; }
 
         /// <summary>
+        /// Gets the number of grid refinements.
+        /// </summary>
+        public int GridNumberOfRefinements { get; }
+
+        /// <summary>
         /// Gets whether the tangent line boundaries should be determined automatically.
         /// </summary>
         public bool TangentLinesAutomaticAtBoundaries { get; }
Index: Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs
===================================================================
diff -u -re2da467f67f436ca9923eb99821e3750d72c9cc1 -r476c10932cea472a1475d63d32c2ad019bc5c57a
--- Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs	(.../SlipPlaneUpliftVanCreator.cs)	(revision e2da467f67f436ca9923eb99821e3750d72c9cc1)
+++ Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs	(.../SlipPlaneUpliftVanCreator.cs)	(revision 476c10932cea472a1475d63d32c2ad019bc5c57a)
@@ -46,18 +46,36 @@
                 throw new ArgumentNullException(nameof(slipPlane));
             }
 
-            var kernelSlipPlane = new SlipPlaneUpliftVan();
+            var kernelSlipPlane = new SlipPlaneUpliftVan
+            {
+                SlipPlaneLeftGrid = CreateGrid(slipPlane, slipPlane.LeftGrid),
+                SlipPlaneRightGrid = CreateGrid(slipPlane, slipPlane.RightGrid),
+                SlipPlaneTangentLine = CreateTangentLine(slipPlane)
+            };
+
+            return kernelSlipPlane;
+        }
+
+        private static SlipCircleGrid CreateGrid(UpliftVanSlipPlane slipPlane, UpliftVanGrid grid)
+        {
+            var slipCircleGrid = new SlipCircleGrid
+            {
+                NumberOfRefinements = slipPlane.GridNumberOfRefinements
+            };
+
             if (!slipPlane.GridAutomaticDetermined)
             {
-                kernelSlipPlane.SlipPlaneLeftGrid = CreateGrid(slipPlane.LeftGrid);
-                kernelSlipPlane.SlipPlaneRightGrid = CreateGrid(slipPlane.RightGrid);
+                slipCircleGrid.GridXLeft = grid.XLeft;
+                slipCircleGrid.GridXRight = grid.XRight;
+                slipCircleGrid.GridZTop = grid.ZTop;
+                slipCircleGrid.GridZBottom = grid.ZBottom;
+                slipCircleGrid.GridXNumber = grid.NumberOfHorizontalPoints;
+                slipCircleGrid.GridZNumber = grid.NumberOfVerticalPoints;
             }
 
-            kernelSlipPlane.SlipPlaneTangentLine = CreateTangentLine(slipPlane);
-
-            return kernelSlipPlane;
+            return slipCircleGrid;
         }
-        
+
         private static SlipCircleTangentLine CreateTangentLine(UpliftVanSlipPlane slipPlane)
         {
             var tangentLine = new SlipCircleTangentLine
@@ -74,18 +92,5 @@
 
             return tangentLine;
         }
-
-        private static SlipCircleGrid CreateGrid(UpliftVanGrid grid)
-        {
-            return new SlipCircleGrid
-            {
-                GridXLeft = grid.XLeft,
-                GridXRight = grid.XRight,
-                GridZTop = grid.ZTop,
-                GridZBottom = grid.ZBottom,
-                GridXNumber = grid.NumberOfHorizontalPoints,
-                GridZNumber = grid.NumberOfVerticalPoints
-            };
-        }
     }
 }
\ No newline at end of file
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs
===================================================================
diff -u -re2da467f67f436ca9923eb99821e3750d72c9cc1 -r476c10932cea472a1475d63d32c2ad019bc5c57a
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs	(.../UpliftVanSlipPlaneTest.cs)	(revision e2da467f67f436ca9923eb99821e3750d72c9cc1)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs	(.../UpliftVanSlipPlaneTest.cs)	(revision 476c10932cea472a1475d63d32c2ad019bc5c57a)
@@ -45,6 +45,7 @@
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
             Assert.AreEqual(4, slipPlane.TangentLineNumberOfRefinements);
+            Assert.AreEqual(1, slipPlane.GridNumberOfRefinements);
         }
 
         [Test]
@@ -94,6 +95,7 @@
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
             Assert.AreEqual(4, slipPlane.TangentLineNumberOfRefinements);
+            Assert.AreEqual(0, slipPlane.GridNumberOfRefinements);
         }
 
         [Test]
@@ -103,10 +105,10 @@
             UpliftVanGrid grid = UpliftVanGridTestFactory.Create();
 
             // Call
-            TestDelegate test = () => new UpliftVanSlipPlane(null, grid, 0, 0, 0);
+            void Call() => new UpliftVanSlipPlane(null, grid, 0, 0, 0);
 
             // Assert
-            var exception = Assert.Throws<ArgumentNullException>(test);
+            var exception = Assert.Throws<ArgumentNullException>(Call);
             Assert.AreEqual("leftGrid", exception.ParamName);
         }
 
@@ -148,6 +150,7 @@
             Assert.AreEqual(tangentZBottom, slipPlane.TangentZBottom);
             Assert.AreEqual(tangentLineNumber, slipPlane.TangentLineNumber);
             Assert.AreEqual(4, slipPlane.TangentLineNumberOfRefinements);
+            Assert.AreEqual(0, slipPlane.GridNumberOfRefinements);
         }
     }
 }
\ No newline at end of file
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs
===================================================================
diff -u -re2da467f67f436ca9923eb99821e3750d72c9cc1 -r476c10932cea472a1475d63d32c2ad019bc5c57a
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs	(.../SlipPlaneUpliftVanCreatorTest.cs)	(revision e2da467f67f436ca9923eb99821e3750d72c9cc1)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs	(.../SlipPlaneUpliftVanCreatorTest.cs)	(revision 476c10932cea472a1475d63d32c2ad019bc5c57a)
@@ -78,12 +78,14 @@
             Assert.AreEqual(leftGridZBottom, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZBottom);
             Assert.AreEqual(leftGridXNumber, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridXNumber);
             Assert.AreEqual(leftGridZNumber, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneLeftGrid.NumberOfRefinements);
             Assert.AreEqual(rightGridXLeft, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXLeft);
             Assert.AreEqual(rightGridXRight, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXRight);
             Assert.AreEqual(rightGridZTop, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZTop);
             Assert.AreEqual(rightGridZBottom, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZBottom);
             Assert.AreEqual(rightGridXNumber, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXNumber);
             Assert.AreEqual(rightGridZNumber, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneRightGrid.NumberOfRefinements);
             Assert.AreEqual(tangentLineZTop, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZTop);
             Assert.AreEqual(tangentLineZBottom, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZBottom);
             Assert.AreEqual(tangentLineNumber, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineNumber);
@@ -109,13 +111,15 @@
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZBottom);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridXNumber);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneLeftGrid.NumberOfRefinements);
             Assert.IsNotNull(slipPlaneUpliftVan.SlipPlaneRightGrid);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXLeft);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXRight);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZTop);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZBottom);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXNumber);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneRightGrid.NumberOfRefinements);
             Assert.IsNotNull(slipPlaneUpliftVan.SlipPlaneTangentLine);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZTop);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZBottom);
@@ -155,12 +159,14 @@
             Assert.AreEqual(leftGridZBottom, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZBottom);
             Assert.AreEqual(leftGridXNumber, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridXNumber);
             Assert.AreEqual(leftGridZNumber, slipPlaneUpliftVan.SlipPlaneLeftGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneLeftGrid.NumberOfRefinements);
             Assert.AreEqual(rightGridXLeft, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXLeft);
             Assert.AreEqual(rightGridXRight, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXRight);
             Assert.AreEqual(rightGridZTop, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZTop);
             Assert.AreEqual(rightGridZBottom, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZBottom);
             Assert.AreEqual(rightGridXNumber, slipPlaneUpliftVan.SlipPlaneRightGrid.GridXNumber);
             Assert.AreEqual(rightGridZNumber, slipPlaneUpliftVan.SlipPlaneRightGrid.GridZNumber);
+            Assert.AreEqual(slipPlane.GridNumberOfRefinements, slipPlaneUpliftVan.SlipPlaneRightGrid.NumberOfRefinements);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZTop);
             Assert.AreEqual(0, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZBottom);
             Assert.AreEqual(1, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineNumber);