Index: Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/PreconsolidationStressReader.cs
===================================================================
diff -u -rf23ce41a1dd004c56ab38179b6b28cd389edba36 -rdf8e710d2bb40eb4f601e1da9f1c87393923c898
--- Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/PreconsolidationStressReader.cs	(.../PreconsolidationStressReader.cs)	(revision f23ce41a1dd004c56ab38179b6b28cd389edba36)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/PreconsolidationStressReader.cs	(.../PreconsolidationStressReader.cs)	(revision df8e710d2bb40eb4f601e1da9f1c87393923c898)
@@ -72,18 +72,18 @@
         /// <summary>
         /// Reads the preconsolidation stresses defined for the soil profile.
         /// </summary>
+        /// <param name="soilProfileId">The soil profile ID to read the preconsolidation stresses for.</param>
         /// <returns>A collection of preconsolidation stresses defined for the profile.</returns>
         /// <exception cref="SoilProfileReadException">Thrown when the preconsolidation stress
         /// could not be read.</exception>
-        public IEnumerable<PreconsolidationStress> ReadPreconsolidationStresses()
+        public IEnumerable<PreconsolidationStress> ReadPreconsolidationStresses(long soilProfileId)
         {
             if (!HasNext)
             {
                 return Enumerable.Empty<PreconsolidationStress>();
             }
 
             var stresses = new List<PreconsolidationStress>();
-            long soilProfileId = ReadSoilProfileId();
             while (HasNext && ReadSoilProfileId() == soilProfileId)
             {
                 stresses.Add(ReadPreconsolidationStress());
Index: Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilProfile2DReader.cs
===================================================================
diff -u -rc22b5c73c2ff2c70407477e6fcf7558309513cb6 -rdf8e710d2bb40eb4f601e1da9f1c87393923c898
--- Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilProfile2DReader.cs	(.../SoilProfile2DReader.cs)	(revision c22b5c73c2ff2c70407477e6fcf7558309513cb6)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/SoilProfile/SoilProfile2DReader.cs	(.../SoilProfile2DReader.cs)	(revision df8e710d2bb40eb4f601e1da9f1c87393923c898)
@@ -190,7 +190,7 @@
                 throw;
             }
 
-            PreconsolidationStress[] preconsolidationStresses = preconsolidationStressReader.ReadPreconsolidationStresses()
+            PreconsolidationStress[] preconsolidationStresses = preconsolidationStressReader.ReadPreconsolidationStresses(criticalProperties.ProfileId)
                                                                                             .ToArray();
             try
             {
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/PreconsolidationStressReaderTest.cs
===================================================================
diff -u -rc22b5c73c2ff2c70407477e6fcf7558309513cb6 -rdf8e710d2bb40eb4f601e1da9f1c87393923c898
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/PreconsolidationStressReaderTest.cs	(.../PreconsolidationStressReaderTest.cs)	(revision c22b5c73c2ff2c70407477e6fcf7558309513cb6)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/PreconsolidationStressReaderTest.cs	(.../PreconsolidationStressReaderTest.cs)	(revision df8e710d2bb40eb4f601e1da9f1c87393923c898)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Core.Common.Base.IO;
@@ -201,7 +202,7 @@
                 reader.Initialize();
 
                 // Call
-                PreconsolidationStress[] preconsolidationStresses = reader.ReadPreconsolidationStresses().ToArray();
+                PreconsolidationStress[] preconsolidationStresses = reader.ReadPreconsolidationStresses(1).ToArray();
 
                 // Assert
                 Assert.AreEqual(4, preconsolidationStresses.Length);
@@ -265,7 +266,7 @@
                 reader.Initialize();
 
                 // Call
-                PreconsolidationStress[] preconsolidationStresses = reader.ReadPreconsolidationStresses().ToArray();
+                PreconsolidationStress[] preconsolidationStresses = reader.ReadPreconsolidationStresses(1).ToArray();
 
                 // Assert
                 Assert.AreEqual(1, preconsolidationStresses.Length);
@@ -281,5 +282,25 @@
 
             Assert.IsTrue(TestHelper.CanOpenFileForWrite(dbFile));
         }
+
+        [Test]
+        public void ReadPreconsolidationStresses_UnknownSoilProfileId_ReturnsEmptyPreconsolidationStress()
+        {
+            // Setup
+            string dbFile = Path.Combine(testDataPath, "2dprofileWithPreconsolidationStressesNullValues.soil");
+
+            using (var reader = new PreconsolidationStressReader(dbFile))
+            {
+                reader.Initialize();
+
+                // Call
+                IEnumerable<PreconsolidationStress> preconsolidationStresses = reader.ReadPreconsolidationStresses(2);
+
+                // Assert
+                CollectionAssert.IsEmpty(preconsolidationStresses);
+            }
+
+            Assert.IsTrue(TestHelper.CanOpenFileForWrite(dbFile));
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/SoilProfile2DReaderTest.cs
===================================================================
diff -u -rc22b5c73c2ff2c70407477e6fcf7558309513cb6 -rdf8e710d2bb40eb4f601e1da9f1c87393923c898
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/SoilProfile2DReaderTest.cs	(.../SoilProfile2DReaderTest.cs)	(revision c22b5c73c2ff2c70407477e6fcf7558309513cb6)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/SoilProfile/SoilProfile2DReaderTest.cs	(.../SoilProfile2DReaderTest.cs)	(revision df8e710d2bb40eb4f601e1da9f1c87393923c898)
@@ -701,5 +701,37 @@
 
             Assert.IsTrue(TestHelper.CanOpenFileForWrite(dbFile));
         }
+
+        [Test]
+        public void ReadSoilProfile_SoilProfilesWithAndWithoutPreconsolidationStresses_ReturnsProfilesWithExpectedNrOfPreconsolidationStresses()
+        {
+            // Setup
+            string dbFile = Path.Combine(testDataPath, "2dProfilesWithAndWithoutPreconsolidationStresses.soil");
+
+            var readProfiles = new List<SoilProfile2D>();
+            using (var reader = new SoilProfile2DReader(dbFile))
+            {
+                reader.Initialize();
+
+                while (reader.HasNext)
+                {
+                    // Call
+                    readProfiles.Add(reader.ReadSoilProfile());
+                }
+
+                // Assert
+                Assert.IsFalse(reader.HasNext);
+                Assert.AreEqual(3, readProfiles.Count);
+            }
+
+            CollectionAssert.AreEqual(new[]
+            {
+                1,
+                0,
+                1
+            }, readProfiles.Select(profile => profile.PreconsolidationStresses.Count()));
+            
+            Assert.IsTrue(TestHelper.CanOpenFileForWrite(dbFile));
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/test-data/SoilProfile2DReader/2dProfilesWithAndWithoutPreconsolidationStresses.soil
===================================================================
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