Critical Hydraulic Gradient

Written by Jerry Ratzlaff on . Posted in Geotechnical Engineering

Critical hydraulic gradient, abbreviated as \(i_c\), is the change in height (pressure) to length between any two points.

 

Critical hydraulic gradient formula

\(\large{ i_c =  \frac{ \gamma_{sub} }{ \gamma_w }  }\)   
\(\large{ i_c = \frac{ G_s \;-\; 1 }{ 1 \;-\; e }   }\)  

Where:

\(\large{ i_c }\) = critical hydraulic gradient

\(\large{ \gamma_{sub} } \)  (Greek symbol gamma) = submerged unit weight

\(\large{  \gamma_w } \)  (Greek symbol gamma) = unit weight of water 

\(\large{ G_s }\) = specific gravity of soil

\(\large{ e }\) = void ratio

 

Tags: Equations for Water Equations for Hydraulic Equations for Soil