Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/DamPipingSellmeijerVnk/DamPipingSellmeijerVnkKernelWrapper.cs
===================================================================
diff -u -r902 -r906
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/DamPipingSellmeijerVnk/DamPipingSellmeijerVnkKernelWrapper.cs	(.../DamPipingSellmeijerVnkKernelWrapper.cs)	(revision 902)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/DamPipingSellmeijerVnk/DamPipingSellmeijerVnkKernelWrapper.cs	(.../DamPipingSellmeijerVnkKernelWrapper.cs)	(revision 906)
@@ -133,8 +133,6 @@
                 var xExit = 0.0;
                 var surfaceLevel = 0.0;
                 var dCoverLayer = 0.0;
-                var d70 = 0.0;
-                var aquiferHeight = 0.0;
                 var permeabilityKx = 0.0;
                 double? upliftFactor = null;
                 if (upliftLocationAndResult != null)
@@ -159,12 +157,18 @@
                 var referenceLevel = Math.Max(location.PolderLevel, surfaceLevel);
 
                 Soil inBetweenAquiferlayerSoil = soilProfile1D.BottomAquiferLayer.Soil;
-                var inBetweenAquiferlayerHeight = 0.0;
+                double inBetweenAquiferlayerHeight;
+                var bottomAquiferlayerHeight = soilProfile1D.GetLayerHeight(soilProfile1D.BottomAquiferLayer);
                 if (soilProfile1D.InBetweenAquiferLayer != null)
                 {
                     inBetweenAquiferlayerSoil = soilProfile1D.InBetweenAquiferLayer.Soil;
                     inBetweenAquiferlayerHeight = soilProfile1D.GetLayerHeight(soilProfile1D.InBetweenAquiferLayer);
                 }
+                else
+                {
+                    bottomAquiferlayerHeight = bottomAquiferlayerHeight / 2;
+                    inBetweenAquiferlayerHeight = bottomAquiferlayerHeight;
+                }
 
                 kernelDataInput = new DamPipingSellmeijerVnkInput()
                 {
@@ -181,7 +185,7 @@
                     WaterViscosity = Physics.WaterViscosity,
                     SurfaceLevel = surfaceLevel,
                     DInBetweenAquiferlayer = inBetweenAquiferlayerHeight,
-                    DBottomAquiferlayer = soilProfile1D.GetLayerHeight(soilProfile1D.BottomAquiferLayer),
+                    DBottomAquiferlayer = bottomAquiferlayerHeight,
                     PermeabilityInBetweenAquiferlayer = inBetweenAquiferlayerSoil.PermeabKx,
                     PermeabilityBottomAquiferlayer = soilProfile1D.BottomAquiferLayer.Soil.PermeabKx,
                 };