Index: Ringtoets/Piping/src/Ringtoets.Piping.InputParameterCalculation/InputParameterCalculationService.cs
===================================================================
diff -u -r0adc6562a9cedb81859034ef5d62e9b11db4d9c7 -r99f3b343f5ac4aed453d9f6d291217de76ef5314
--- Ringtoets/Piping/src/Ringtoets.Piping.InputParameterCalculation/InputParameterCalculationService.cs	(.../InputParameterCalculationService.cs)	(revision 0adc6562a9cedb81859034ef5d62e9b11db4d9c7)
+++ Ringtoets/Piping/src/Ringtoets.Piping.InputParameterCalculation/InputParameterCalculationService.cs	(.../InputParameterCalculationService.cs)	(revision 99f3b343f5ac4aed453d9f6d291217de76ef5314)
@@ -47,26 +47,26 @@
             {
                 var calculatorInput = new PipingCalculatorInput(
                     waterVolumetricWeight,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
                     phreaticLevelExit,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
-                    Double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
+                    double.NaN,
                     exitPointL,
                     surfaceLine,
                     soilProfile
@@ -75,7 +75,7 @@
             }
             catch (PipingCalculatorException)
             {
-                return Double.NaN;
+                return double.NaN;
             }
         }
 
@@ -89,28 +89,28 @@
         public static double CalculatePiezometricHeadAtExit(RoundedDouble assessmentLevel, RoundedDouble dampingFactorExit, RoundedDouble phreaticLevelExit)
         {
             var calculatorInput = new PipingCalculatorInput(
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
                 assessmentLevel,
-                Double.NaN,
+                double.NaN,
                 dampingFactorExit,
                 phreaticLevelExit,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
-                Double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
+                double.NaN,
                 null,
                 null
                 );