1. (35) For the assumption that H₁-10 m and H₂-2m, plot the diagrams of total and effective stresses and pore water pressure along AD line. Assume that the saturated unit weight of soil is 18 kN/m³, and that distances AB, BC and CD are 2, 5 and 20 m, respectively. In addition, calculate the seepage rate for the assumption that the dam is 80 m long and k=0.000,01 m/s. H₁ H H₂ B I T Toe filter Do I k₁ = k₂ = k N₁ = 5 Nd=9

Refer to Figure 7.24. The following data were collected during the field permeability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h1 = 2.9 m; r1 = 17.8 m Piezometric level and radial distance of the second observation well: h2 = 1.8 m; r2 = 8.1 m Rate of discharge from pumping, q = 0.5 m3/min

Refer to Figure P3.3. Use Eqs. (3.10) and (3.11) to determine the variation of OCR and preconsolidation pressure c. FIGURE P3.3

A sand has Gs = 2.66. Calculate the hydraulic gradient that will cause boiling for e = 0.35, 0.45, 0.55, 0.7, and 0.8.