Index: Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs
===================================================================
diff -u -rb4b28a413d920e3e03643453c8ce609bb9d4796d -r39bb85df37101e479bee5787a048d18ba3f4a884
--- Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs	(.../ProbabilisticPipingCalculationServiceTest.cs)	(revision b4b28a413d920e3e03643453c8ce609bb9d4796d)
+++ Riskeer/Piping/test/Riskeer.Piping.Service.Test/Probabilistic/ProbabilisticPipingCalculationServiceTest.cs	(.../ProbabilisticPipingCalculationServiceTest.cs)	(revision 39bb85df37101e479bee5787a048d18ba3f4a884)
@@ -905,6 +905,74 @@
             mocks.VerifyAll();
         }
 
+        [Test]
+        public void Validate_SaturatedCoverageLayerVolumicWeightShiftLessThanWaterVolumicWeight_LogsMessageAndReturnsFalse()
+        {
+            // Setup
+            var failureMechanism = new PipingFailureMechanism();
+
+            var mocks = new MockRepository();
+            IAssessmentSection assessmentSection = AssessmentSectionTestHelper.CreateAssessmentSectionStub(
+                failureMechanism, mocks, validHydraulicBoundaryDatabaseFilePath);
+            mocks.ReplayAll();
+
+            var coverageLayerInvalidSaturatedVolumicWeight = new PipingSoilLayer(testSurfaceLineTopLevel)
+            {
+                IsAquifer = false,
+                BelowPhreaticLevel = new LogNormalDistribution
+                {
+                    Mean = (RoundedDouble) 9.81,
+                    StandardDeviation = (RoundedDouble) 2,
+                    Shift = (RoundedDouble) 0
+                }
+            };
+            var validLayer = new PipingSoilLayer(5.0)
+            {
+                IsAquifer = true,
+                Permeability = new VariationCoefficientLogNormalDistribution
+                {
+                    Mean = (RoundedDouble) 1,
+                    CoefficientOfVariation = (RoundedDouble) 0.5
+                },
+                DiameterD70 = new VariationCoefficientLogNormalDistribution
+                {
+                    Mean = (RoundedDouble) 0.0002,
+                    CoefficientOfVariation = (RoundedDouble) 0
+                }
+            };
+            var profile = new PipingSoilProfile(string.Empty, 0.0,
+                                                new[]
+                                                {
+                                                    coverageLayerInvalidSaturatedVolumicWeight,
+                                                    validLayer
+                                                },
+                                                SoilProfileType.SoilProfile1D);
+
+            calculation.InputParameters.StochasticSoilProfile = new PipingStochasticSoilProfile(0.0, profile);
+
+            var isValid = false;
+
+            // Call
+            void Call() => isValid = ProbabilisticPipingCalculationService.Validate(calculation,
+                                                                                    new GeneralPipingInput(),
+                                                                                    assessmentSection);
+
+            // Assert
+            TestHelper.AssertLogMessages(Call, messages =>
+            {
+                string[] msgs = messages.ToArray();
+                Assert.AreEqual(3, msgs.Length);
+                CalculationServiceTestHelper.AssertValidationStartMessage(msgs[0]);
+                Assert.AreEqual(
+                    "De verschuiving van het verzadigd volumetrisch gewicht van de deklaag moet groter zijn dan het volumetrisch gewicht van water.",
+                    msgs[1]);
+                CalculationServiceTestHelper.AssertValidationEndMessage(msgs[2]);
+            });
+
+            Assert.IsFalse(isValid);
+            mocks.VerifyAll();
+        }
+
         #endregion
 
         #region Calculate