Index: DamClassic/trunk/src/Dam/Data/PipingCalculator.cs
===================================================================
diff -u -r874 -r1250
--- DamClassic/trunk/src/Dam/Data/PipingCalculator.cs	(.../PipingCalculator.cs)	(revision 874)
+++ DamClassic/trunk/src/Dam/Data/PipingCalculator.cs	(.../PipingCalculator.cs)	(revision 1250)
@@ -264,6 +264,14 @@
                 XSoilGeometry2DOrigin = location.XSoilGeometry2DOrigin
             };
             UpliftLocationAndResult = upliftLocationDeterminator.GetLocationAndResult(upliftCriterion);
+
+            // next lines are outcommented because they are not in the Release 15.1
+            // but they are needed to get the same results as in the new 18.1 version
+            // start block for debugging
+//            const double upliftCriterionTolerance = 0.000000001;
+//            double upliftCriterionTmp = upliftCriterion - upliftCriterionTolerance;
+//            UpliftLocationAndResult = upliftLocationDeterminator.GetLocationAndResult(upliftCriterionTmp);
+            // end block for debugging
         }
 
         /// <summary>