Index: Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationValidationHelper.cs
===================================================================
diff -u -r3cbba622af245bc359a861f11522140b5905a7a1 -rd8dd6b9fbf7990a92a3d1f60839772cdd653c719
--- Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationValidationHelper.cs	(.../PipingCalculationValidationHelper.cs)	(revision 3cbba622af245bc359a861f11522140b5905a7a1)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationValidationHelper.cs	(.../PipingCalculationValidationHelper.cs)	(revision d8dd6b9fbf7990a92a3d1f60839772cdd653c719)
@@ -56,7 +56,6 @@
 
                 warnings.AddRange(GetMultipleAquiferLayersWarning(input, surfaceLineLevel));
                 warnings.AddRange(GetMultipleCoverageLayersWarning(input, surfaceLineLevel));
-                warnings.AddRange(GetDiameter70Warning(input));
                 warnings.AddRange(GetThicknessCoverageLayerWarnings(input));
             }
 
@@ -108,16 +107,6 @@
             }
         }
 
-        private static IEnumerable<string> GetDiameter70Warning(PipingInput input)
-        {
-            RoundedDouble diameter70Value = PipingDesignVariableFactory.GetDiameter70(input).GetDesignValue();
-
-            if (!double.IsNaN(diameter70Value) && (diameter70Value < 6.3e-5 || diameter70Value > 0.5e-3))
-            {
-                yield return string.Format(Resources.PipingCalculationService_GetInputWarnings_Specified_DiameterD70_value_0_not_in_valid_range_of_model, diameter70Value);
-            }
-        }
-
         private static IEnumerable<string> GetMultipleCoverageLayersWarning(PipingInput input, double surfaceLineLevel)
         {
             bool hasMoreThanOneCoverageLayer = input.StochasticSoilProfile.SoilProfile.GetConsecutiveCoverageLayersBelowLevel(surfaceLineLevel).Count() > 1;
Index: Riskeer/Piping/src/Riskeer.Piping.Service/SemiProbabilistic/SemiProbabilisticPipingCalculationService.cs
===================================================================
diff -u -ra18f03773a92939ae1ad710d71c35a1efed7f54a -rd8dd6b9fbf7990a92a3d1f60839772cdd653c719
--- Riskeer/Piping/src/Riskeer.Piping.Service/SemiProbabilistic/SemiProbabilisticPipingCalculationService.cs	(.../SemiProbabilisticPipingCalculationService.cs)	(revision a18f03773a92939ae1ad710d71c35a1efed7f54a)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/SemiProbabilistic/SemiProbabilisticPipingCalculationService.cs	(.../SemiProbabilisticPipingCalculationService.cs)	(revision d8dd6b9fbf7990a92a3d1f60839772cdd653c719)
@@ -136,6 +136,15 @@
         private static void LogAnyWarnings(SemiProbabilisticPipingCalculation calculation)
         {
             CalculationServiceHelper.LogMessagesAsWarning(PipingCalculationValidationHelper.GetValidationWarnings(calculation.InputParameters).ToArray());
+
+            RoundedDouble diameter70Value = PipingDesignVariableFactory.GetDiameter70(calculation.InputParameters).GetDesignValue();
+            if (!double.IsNaN(diameter70Value) && (diameter70Value < 6.3e-5 || diameter70Value > 0.5e-3))
+            {
+                CalculationServiceHelper.LogMessagesAsWarning(new[]
+                {
+                    string.Format(Resources.PipingCalculationService_GetInputWarnings_Specified_DiameterD70_value_0_not_in_valid_range_of_model, diameter70Value)
+                });
+            }
         }
 
         private static bool LogAnyErrors(SemiProbabilisticPipingCalculation calculation, GeneralPipingInput generalInput, RoundedDouble normativeAssessmentLevel)
Index: Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingCalculationValidationHelperTest.cs
===================================================================
diff -u -rf260ac6028b0962bac381e9cbd81f9db7823a16e -rd8dd6b9fbf7990a92a3d1f60839772cdd653c719
--- Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingCalculationValidationHelperTest.cs	(.../PipingCalculationValidationHelperTest.cs)	(revision f260ac6028b0962bac381e9cbd81f9db7823a16e)
+++ Riskeer/Piping/test/Riskeer.Piping.Service.Test/PipingCalculationValidationHelperTest.cs	(.../PipingCalculationValidationHelperTest.cs)	(revision d8dd6b9fbf7990a92a3d1f60839772cdd653c719)
@@ -244,13 +244,13 @@
         {
             // Setup
             var surfaceLine = new PipingSurfaceLine(string.Empty);
-            
+
             surfaceLine.SetGeometry(new[]
             {
                 new Point3D(0, 0, 3.3),
                 new Point3D(1.0, 0, 3.3)
             });
-            
+
             var profile = new PipingSoilProfile(string.Empty, 0, new[]
             {
                 new PipingSoilLayer(4.3)
@@ -279,56 +279,6 @@
         }
 
         [Test]
-        [TestCase(6.2e-5)]
-        [TestCase(5.1e-3)]
-        public void GetValidationWarnings_InvalidDiameterD70Value_ReturnsMessage(double diameter70Value)
-        {
-            // Setup
-            var random = new Random(21);
-            var coverageLayerInvalidD70 = new PipingSoilLayer(5.0)
-            {
-                IsAquifer = true,
-                Permeability = new VariationCoefficientLogNormalDistribution
-                {
-                    Mean = (RoundedDouble) 1,
-                    CoefficientOfVariation = (RoundedDouble) 0.5
-                },
-                DiameterD70 = new VariationCoefficientLogNormalDistribution
-                {
-                    Mean = (RoundedDouble) diameter70Value,
-                    CoefficientOfVariation = (RoundedDouble) 0
-                }
-            };
-            var validLayer = new PipingSoilLayer(testSurfaceLineTopLevel)
-            {
-                IsAquifer = false,
-                BelowPhreaticLevel = new LogNormalDistribution
-                {
-                    Mean = random.NextRoundedDouble(15.0, 999.999),
-                    StandardDeviation = random.NextRoundedDouble(1e-6, 5.0),
-                    Shift = random.NextRoundedDouble(1e-6, 10)
-                }
-            };
-            var profile = new PipingSoilProfile(string.Empty, 0.0,
-                                                new[]
-                                                {
-                                                    validLayer,
-                                                    coverageLayerInvalidD70
-                                                },
-                                                SoilProfileType.SoilProfile1D);
-
-            calculation.InputParameters.StochasticSoilProfile = new PipingStochasticSoilProfile(0.0, profile);
-
-            // Call
-            IEnumerable<string> messages = PipingCalculationValidationHelper.GetValidationWarnings(calculation.InputParameters);
-
-            // Assert
-            Assert.AreEqual(1, messages.Count());
-            var expectedMessage = $"Rekenwaarde voor d70 ({new RoundedDouble(6, diameter70Value)} m) ligt buiten het geldigheidsbereik van dit model. Geldige waarden liggen tussen 0.000063 m en 0.0005 m.";
-            Assert.AreEqual(expectedMessage, messages.ElementAt(0));
-        }
-
-        [Test]
         public void GetValidationErrors_InputNull_ThrowsArgumentNullException()
         {
             // Call
Index: Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs
===================================================================
diff -u -rff0f25c130d9f23881225bd6d8c3f8d09d8b1fd5 -rd8dd6b9fbf7990a92a3d1f60839772cdd653c719
--- Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs	(.../ProbabilisticPipingCalculationServiceTest.cs)	(revision ff0f25c130d9f23881225bd6d8c3f8d09d8b1fd5)
+++ Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs	(.../ProbabilisticPipingCalculationServiceTest.cs)	(revision d8dd6b9fbf7990a92a3d1f60839772cdd653c719)
@@ -642,72 +642,6 @@
         }
 
         [Test]
-        [TestCase(6.2e-5)]
-        [TestCase(5.1e-3)]
-        public void Validate_InvalidDiameterD70Value_LogsMessageAndReturnsTrue(double diameter70Value)
-        {
-            // Setup
-            var failureMechanism = new PipingFailureMechanism();
-
-            var mocks = new MockRepository();
-            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(
-                failureMechanism, mocks, validHydraulicBoundaryDatabaseFilePath);
-            mocks.ReplayAll();
-
-            var random = new Random(21);
-            var coverageLayerInvalidD70 = new PipingSoilLayer(5.0)
-            {
-                IsAquifer = true,
-                Permeability = new VariationCoefficientLogNormalDistribution
-                {
-                    Mean = (RoundedDouble) 1,
-                    CoefficientOfVariation = (RoundedDouble) 0.5
-                },
-                DiameterD70 = new VariationCoefficientLogNormalDistribution
-                {
-                    Mean = (RoundedDouble) diameter70Value,
-                    CoefficientOfVariation = (RoundedDouble) 0
-                }
-            };
-            var validLayer = new PipingSoilLayer(testSurfaceLineTopLevel)
-            {
-                IsAquifer = false,
-                BelowPhreaticLevel = new LogNormalDistribution
-                {
-                    Mean = random.NextRoundedDouble(15.0, 999.999),
-                    StandardDeviation = random.NextRoundedDouble(1e-6, 5.0),
-                    Shift = random.NextRoundedDouble(1e-6, 10)
-                }
-            };
-            var profile = new PipingSoilProfile(string.Empty, 0.0,
-                                                new[]
-                                                {
-                                                    validLayer,
-                                                    coverageLayerInvalidD70
-                                                },
-                                                SoilProfileType.SoilProfile1D);
-
-            calculation.InputParameters.StochasticSoilProfile = new PipingStochasticSoilProfile(0.0, profile);
-
-            var isValid = false;
-
-            // Call
-            void Call() => isValid = ProbabilisticPipingCalculationService.Validate(calculation, failureMechanism.GeneralInput, assessmentSection);
-
-            // Assert
-            TestHelper.AssertLogMessages(Call, messages =>
-            {
-                string[] msgs = messages.ToArray();
-                Assert.AreEqual(3, msgs.Length);
-                CalculationServiceTestHelper.AssertValidationStartMessage(msgs[0]);
-                Assert.AreEqual($"Rekenwaarde voor d70 ({new RoundedDouble(6, diameter70Value)} m) ligt buiten het geldigheidsbereik van dit model. Geldige waarden liggen tussen 0.000063 m en 0.0005 m.", msgs[1]);
-                CalculationServiceTestHelper.AssertValidationEndMessage(msgs[2]);
-            });
-            Assert.IsTrue(isValid);
-            mocks.VerifyAll();
-        }
-
-        [Test]
         [TestCase(false, false)]
         [TestCase(false, true)]
         [TestCase(true, false)]