Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.Designer.cs
===================================================================
diff -u -r1215 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 1215)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 1387)
@@ -79,6 +79,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to GetPointSegmentIncluding(): End value is smaller than the start value.
+        /// </summary>
+        internal static string GetPointSegmentIncludingEndValueSmallerThanStartValue {
+            get {
+                return ResourceManager.GetString("GetPointSegmentIncludingEndValueSmallerThanStartValue", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to In combining the aquifer layer for 1D profile {0}, different water pressure interpolation models are used in the layers concerned which is not allowed..
         /// </summary>
         internal static string SoilProfile1DAquiferLayerCombiner_CombineLayers_InconsistentWaterpressureInterpolationModel {
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.nl-NL.resx
===================================================================
diff -u -r1215 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.nl-NL.resx	(.../Resources.nl-NL.resx)	(revision 1215)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.nl-NL.resx	(.../Resources.nl-NL.resx)	(revision 1387)
@@ -117,6 +117,9 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <data name="EndValueSmallerThanStartValue" xml:space="preserve">
+    <value>GetPointSegmentIncluding(): Eindwaarde is kleiner dan de startwaarde</value>
+  </data>
   <data name="GetCotangentOfInnerSlopeDikeToeAtPolderRequired" xml:space="preserve">
     <value>GetCotangentOfInnerSlope heeft karakteristiek punt insteek berm of dijk teen polderzijde nodig.</value>
   </data>
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2.cs
===================================================================
diff -u -r955 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2.cs	(.../SurfaceLine2.cs)	(revision 955)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SurfaceLine2.cs	(.../SurfaceLine2.cs)	(revision 1387)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Deltares.DamEngine.Data.Geometry;
+using Deltares.DamEngine.Data.Properties;
 using Deltares.DamEngine.Data.Standard;
 using Deltares.DamEngine.Data.Standard.Language;
 using Deltares.DamEngine.Data.Standard.Validation;
@@ -194,7 +195,7 @@
 
             double x = point.X;
             return (x >= startX || x.AlmostEquals(startX, GeometryPoint.Precision))
-                   && (x < endX || x.AlmostEquals(endX, GeometryPoint.Precision));
+                   && (x <= endX || x.AlmostEquals(endX, GeometryPoint.Precision));
         }
 
         /// <summary>
@@ -208,7 +209,7 @@
         {
             if (endX < startX)
             {
-                throw new ArgumentException("End value is smaller then the start value");
+                throw new ArgumentException(Resources.GetPointSegmentIncludingEndValueSmallerThanStartValue);
             }
 
             return from point in PointsOrderdByX
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.resx
===================================================================
diff -u -r1215 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 1215)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 1387)
@@ -123,6 +123,9 @@
   <data name="GetCotangentOfInnerSlopeDikeTopAtPolderRequired" xml:space="preserve">
     <value>GetCotangentOfInnerSlope requires characteristic point DikeTopAtPolder to be defined.</value>
   </data>
+  <data name="GetPointSegmentIncludingEndValueSmallerThanStartValue" xml:space="preserve">
+    <value>GetPointSegmentIncluding(): End value is smaller than the start value</value>
+  </data>
   <data name="SoilProfile1DAquiferLayerCombiner_CombineLayers_InconsistentWaterpressureInterpolationModel" xml:space="preserve">
     <value>In combining the aquifer layer for 1D profile {0}, different water pressure interpolation models are used in the layers concerned which is not allowed.</value>
   </data>
Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/DikesDesign/SurfaceLineHeightAdapterTest.cs
===================================================================
diff -u -r1090 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/DikesDesign/SurfaceLineHeightAdapterTest.cs	(.../SurfaceLineHeightAdapterTest.cs)	(revision 1090)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators.Tests/DikesDesign/SurfaceLineHeightAdapterTest.cs	(.../SurfaceLineHeightAdapterTest.cs)	(revision 1387)
@@ -447,6 +447,9 @@
             }
         }
 
+        /// <summary>
+        /// This tests with a realistic surfaceline which contains all possible relevant characteristic points
+        /// </summary>
         [Test]
         public void AdaptedSurfaceLineWithTrafficLoadPointsShouldAdjustThosePoints1()
         {
@@ -460,6 +463,9 @@
             Assert.AreEqual(newSurfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.DikeTopAtPolder).Z, newSurfaceLine.CharacteristicPoints.GetGeometryPoint(CharacteristicPointType.TrafficLoadInside).Z, cTolerance);
         }
 
+        /// <summary>
+        /// This tests with a surfaceline that contains the minimum possible characteristic points
+        /// </summary>
         [Test]
         public void AdaptedSurfaceLineWithTrafficLoadPointsShouldAdjustThosePoints2()
         {
@@ -889,7 +895,7 @@
         }
 
         [Test]
-        public void AdaptedSurfaceLineWithNewDefinedTopWidthAndOutsideSlopeAndInsideSlope()
+        public void AdaptedSurfaceLineWithNewDefinedTopWidthAndOutsideSlopeAndInsideSlope2()
         {
             var surfaceLine = new SurfaceLine2
             {
@@ -979,7 +985,7 @@
 
         [Test]
         [ExpectedException(typeof(SurfaceLineAdapterException))]
-        public void HeightAdaptionThrowsExceptionIfSurfaceLIsNotLongEnough()
+        public void HeightAdaptionThrowsExceptionIfSurfaceLineIsNotLongEnough()
         {
             var surfaceLine = FactoryForSurfaceLines.CreateRealisticSurfaceLineForHeightAdapter();
             var location = new Location();
Index: DamEngine/trunk/src/Deltares.DamEngine.Data/General/PlLines/PlLine.cs
===================================================================
diff -u -r1121 -r1387
--- DamEngine/trunk/src/Deltares.DamEngine.Data/General/PlLines/PlLine.cs	(.../PlLine.cs)	(revision 1121)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/General/PlLines/PlLine.cs	(.../PlLine.cs)	(revision 1387)
@@ -81,7 +81,7 @@
             if (endX < startX)
                 throw new ArgumentException("End value is smaller then the start value");
 
-            return from point in this.PointsOrderdByX
+            return from point in this.PointsOrderedByX
                    where point != null && (point.X > startX && point.X < endX)
                    orderby point.X ascending
                    select point;
@@ -116,7 +116,7 @@
             }
         }
 
-        private IEnumerable<PlLinePoint> PointsOrderdByX
+        private IEnumerable<PlLinePoint> PointsOrderedByX
         {
             get { return this.Points.OrderBy(p => p.X); }
         }