2. Given: Refer to fig. 1 Δο, 1000 psf H1 = 8 ft H2 = 15 ft , H3 = 17 ft Sand: Vary = 110pcf ,Vsat = 115 pcf Clay : Vsat = 120pcf ,LL = 50% , eo = 0.90 Estimate the primary consolidation settlement if: a. The clay is normally consolidated b. The preconsolidation pressure is 2600 psf (Cr = 1/6 Cc)

If OCR = 1.5, Determine the Primary consolidation of the clay %3D sand Gs= 2.7 S = 0.32 3 m Cc = 0.3 Δσ-150 kPa Cr = 0.05 e= 0.75 7.4 m clay W= 40% 2 m

Refer to Figure below.  Estimate the primary consolidation settlement in the clay layer. Given: Δσ = 150 kN/m2; H1  = 3 m; H2 = 4 m; and H3= 5 m. Soil characteristics are as follows:           •  Sand: γdry = 15 kN/m3, γsat = 19 kN/m3           • Clay: LL  = 65; e = 0.65; γsat = 18 kN/m3; ; Cs  =1/6cc               σʹc = 200 kN/m2