A coarse-grained soil has a voids ratio of 0.66 and specific gravity G of 2.65. What will be its critical hydraulic gradient?
(a) 0.99
(b) 0.88
(c) 0.77
(d) 0.66
I had been asked this question in a national level competition.
I'm obligated to ask this question of Seepage Pressure and Upward Flow in portion Seepage Analysis of Geotechnical Engineering I