In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \sigma^{\prime}, i$ and $i_{c},$ respectively. For initiation of quicksand condition, which one of the following statements is TRUE?
(A) $\sigma^{\prime} \neq 0$ and $i=i_{c}$
(B) $\sigma^{\prime}=0$ and $i=i_{c}$
(C) $\sigma^{\prime} \neq 0$ and $i \neq i_{c}$
(D) $\sigma=0$ and $i=i_{c}$

Question ID - 156967 | SaraNextGen Top Answer

In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \sigma^{\prime}, i$ and $i_{c},$ respectively. For initiation of quicksand condition, which one of the following statements is TRUE?
(A) $\sigma^{\prime} \neq 0$ and $i=i_{c}$
(B) $\sigma^{\prime}=0$ and $i=i_{c}$
(C) $\sigma^{\prime} \neq 0$ and $i \neq i_{c}$
(D) $\sigma=0$ and $i=i_{c}$