Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs
===================================================================
diff -u -r6087 -r6165
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs	(.../SoilProfile2DSurfaceLineHelper.cs)	(revision 6087)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs	(.../SoilProfile2DSurfaceLineHelper.cs)	(revision 6165)
@@ -80,7 +80,7 @@
         SoilProfile2D clonedProfile = soilProfile2D.Clone();
         GeometryPointString clonedSurfaceLine = surfaceLine.Clone();
         
-        RoundCoordinates(clonedProfile.Geometry);
+        RoundCoordinates(clonedProfile.Geometry, clonedSurfaceLine);
         if (clonedProfile.Geometry.Right < surfaceLine.GetMinX() || clonedProfile.Geometry.Left > surfaceLine.GetMaxX())
         {
             throw new ArgumentException("Surface line is beyond the profile.");
@@ -124,19 +124,18 @@
 
     private static void RoundCoordinates(GeometryData geometry, GeometryPointString surfaceLine = null)
     {
-        const double accuracy = 1e-3;
         foreach (Point2D point in geometry.Points)
         {
-            point.X = Point2D.RoundValue(point.X, accuracy);
-            point.Z = Point2D.RoundValue(point.Z, accuracy);
+            point.X = Point2D.RoundValue(point.X);
+            point.Z = Point2D.RoundValue(point.Z);
         }
 
-        geometry.Right = GeometryObject.RoundValue(geometry.Right, accuracy);
-        geometry.Left = GeometryObject.RoundValue(geometry.Left, accuracy);
-        geometry.Bottom = GeometryObject.RoundValue(geometry.Bottom, accuracy);
+        geometry.Right = GeometryObject.RoundValue(geometry.Right);
+        geometry.Left = GeometryObject.RoundValue(geometry.Left);
+        geometry.Bottom = GeometryObject.RoundValue(geometry.Bottom);
         if (surfaceLine != null)
         {
-            surfaceLine.RoundPointsCoordinates(accuracy);
+            surfaceLine.RoundPointsCoordinates(GeometryConstants.Accuracy);
         }
     }