4) (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated...

 

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4) (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in the figures below. (b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer. (c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases. (a) 8m (b) Water: y=9.81 kN/m 2m Water: y =9.81 kN/m 2m A A 8m Sand 1: y 18 kN/m. k-10 m/s 8m Sand 1: Y18 kN/m. k=10+ m/s 8m B B C C Sand 2: Y-19 kN/m 12m Sand 2: Y-19 kN/m 12m 6m k-2-10 m/s k-2-10 m/s 6m D Very Permeable Sand Layer Very Permeable Sand Layer 4) (a) Calculate the pore pressure, the total stress, and the effective stress at the indicated points in the figures below. (b) Determine the head loss, the hydraulic gradient, and the discharge velocity in each layer. (c) evaluate the possibility of quicksand in scenarios (a) and (b) if the head difference increases. (a) 8m (b) Water: y=9.81 kN/m 2m Water: y =9.81 kN/m 2m A A 8m Sand 1: y 18 kN/m. k-10 m/s 8m Sand 1: Y18 kN/m. k=10+ m/s 8m B B C C Sand 2: Y-19 kN/m 12m Sand 2: Y-19 kN/m 12m 6m k-2-10 m/s k-2-10 m/s 6m D Very Permeable Sand Layer Very Permeable Sand Layer