Index: DamEngine/trunk/doc/Dam Engine - Functional Design/UseWBIPipingKernel.tex
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diff -u -r2396 -r2407
--- DamEngine/trunk/doc/Dam Engine - Functional Design/UseWBIPipingKernel.tex	(.../UseWBIPipingKernel.tex)	(revision 2396)
+++ DamEngine/trunk/doc/Dam Engine - Functional Design/UseWBIPipingKernel.tex	(.../UseWBIPipingKernel.tex)	(revision 2407)
@@ -10,6 +10,8 @@
 \item Determiniation of the piping safety factor by dividing the required seepage length by the present seepage length.
 \end{enumerate}
 
+Note that the seepage length is calculated by (XExit - XEntry) + DistanceToEntryPoint. XExit is the exit point (point where the uplift is located), XEntry is the location of the dike toe at riverside and DistanceToEntryPoint is an optional user defined value, default 0.
+
 The use by DAM of these functions is described in following paragraphs.
 
 \section{Uplift (uplift safety)}\label{sec:Uplift}
