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The critical hydraulic gradient of a soil is 1.0. Its saturated unit weight is:
- A1.0 kN/m3
- B9.81 kN/m3
- C10.0 kN/m3
- D19.62 kN/m3
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CCommunity
$({i_{cr}} = \;\frac{{\gamma '}}{{{\gamma _w}}})$
γ' = submerged unit weight of soil = γsat - γw
γw= unit weight of water
icr = 1
$({i_{cr}} = 1 = \;\frac{{{\gamma _{sat}} - {\gamma _w}}}{{{\gamma _w}}})$
$(\begin{array}{l}
{\gamma _w} = 9.81\;kN/{m^3}\\
{\gamma _{sat}} = 19.62\;kN/{m^3}
\end{array})$
γ' = submerged unit weight of soil = γsat - γw
γw= unit weight of water
icr = 1
$({i_{cr}} = 1 = \;\frac{{{\gamma _{sat}} - {\gamma _w}}}{{{\gamma _w}}})$
$(\begin{array}{l}
{\gamma _w} = 9.81\;kN/{m^3}\\
{\gamma _{sat}} = 19.62\;kN/{m^3}
\end{array})$