Index: dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/PipingSellmeijer4ForcesTests.cs
===================================================================
diff -u -r625 -r678
--- dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/PipingSellmeijer4ForcesTests.cs	(.../PipingSellmeijer4ForcesTests.cs)	(revision 625)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/PipingSellmeijer4ForcesTests.cs	(.../PipingSellmeijer4ForcesTests.cs)	(revision 678)
@@ -1,11 +1,14 @@
 using System.IO;
+using Deltares.DamEngine.Io;
 using NUnit.Framework;
 
 namespace Deltares.DamEngine.Interface.Tests
 {
     [TestFixture]
     public class PipingSellmeijer4ForcesTests
     {
+        private const double Tolerance = 0.0005;
+
         [Test]
         public void CanPerformSellmeijer4ForcesDesignPipingVoorbeeld1()
         {
@@ -14,7 +17,32 @@
             EngineInterface engineInterface = new EngineInterface(inputString);
             Assert.IsNotNull(engineInterface.DamProjectData);
             string outputString = engineInterface.Run();
+            // Factor piping = 0.506
+            // Kritische hoogte = 1.619
+            // Factor opdrijven = 0.351
+            // Kwelweglengte piping = 25.0
+            // Intredepunt x-lokaal = 10.0
+            // Uittredepunt x-lokaal = 35.0
+            // Opdrijven = true
+            // Profielnaam = soilprofile_01
+            // PL3 opdrijven = 0.582
+            // PL3 stijghoogte aangepast = 1.262
+            // PL3 locatie opdriven lokaal = 35.0
+            // PL4 opdrijven = 0.0
+            // PL4 stijghoogte aangepast = 0.0
+            // PL4 locatie opdrijven lokaal = 0.0
+            // Locatie naam = "profiel 1"
+            // ID locatie scenario = "1"
+            // Heave Factor = 90.0
             Assert.IsNotNull(outputString);
+            var output = DamXmlSerialization.LoadOutputFromXmlString(outputString);
+            Assert.AreEqual(0.506, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.Sellmeijer4ForcesFactor, Tolerance);
+            Assert.AreEqual(1.619, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.Sellmeijer4ForcesHcritical, Tolerance);
+            //Assert.AreEqual(0.351, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.UpliftFactor, tolerance);
+            //Assert.AreEqual(true, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.UpliftSituation.IsUplift);
+            //Assert.AreEqual(1.262, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.UpliftSituation.Pl3HeadAdjusted, tolerance);
+            //Assert.AreEqual(35.0, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.UpliftSituation.Pl3LocationXMinUplift, tolerance);
+            //Assert.AreEqual(0.351, output.Results.CalculationResults.DesignResults[0].PipingDesignResults.UpliftSituation.Pl3MinUplift, tolerance);
         }
 
     }