A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at
which quick sand condition occurs, is
(A) 0.25
(B) 0.50
(C) 0.75
(D) 1.00
which quick sand condition occurs, is
(A) 0.25
(B) 0.50
(C) 0.75
(D) 1.00