Dry sand Ydry 16.5 kN/m³ 3 m A B 3 m C Ground water table Clay 13 m Y 19.25 kN/m Impermeable layer
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Calculate the total stress, pore water pressure, and effective
stresses at points A, B, C, and D.
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- 1. A permeable soll layer is underloin by animpervi ous loyer as shown With k-53x10^-3cm/sec for the permeable layer, calculate the rate of seepage through it in m^3/hr/m width if H=3m and a = 8 C4) Refer to Figure 11.41. Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are Cg = 1/5 Cc, O'c= 40 kN/m². Field monitoring indicated that the foundation settlement was 19 mm during the first 12 months. a. Estimate the average stress increase in the clay layer due to the applied load. b. Estimate the primary consolidation settlement. c. What is the degree of consolidation after 12 months? d. Estimate the coefficient of consolidation for the pressure range. e. Estimate the settlement in 24 months.1. Percent passing on sieve 4.75mm Weight Individual Cumulative F Sieve Retained Percent Percent (g) 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.5 Oa. 93.70 ) b. 90.70 Oc. 97.70 d. 99.70
- 1. Percent passing on sieve 600um Weight Individual Cumulative Percent Sieve Retained Percent Percent Passing (g) 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.5Sandstone reservoir rock that has porosity 19% and flow zone indicator 0.0247 um.Calculate the specific ?surface area 25a) For adry soil,(Hiw) y dry. = 16 KN/ m³, W= 22% find Ysat 3 , Gsz3e 2 If S=50%, e = 0.8 2 Determine GS and n, A %3D V / V-7
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- Channel lag deposits are a feature ofa. Floodplain sedimentb. Crevasse sedimentc. Talweg depositsd. Natural Levee sedimentWW Water Treatment II- 15th May 2022- Third Class- Pollution Control Branch US 3 Q1: AP. 5 Vs Determine the terminal settling velocity for a sand particle with an average diameter of 0.5 mm and a density of 2600 kg/m³ settling in water at 20°C. μ = 1.002 × 10-³ N-s/m² Pw= 998.2 kg/m³ 8(pp-P.) d 18μ U₂ RePwVsdp/H, Cp- = Stock 3 24 + N +0.34A sand layer of the cross-sectional area shown in the figure has been determined to exist for a 450m length of levee. The coefficient of permeability of sand is 3m/day. Compute the quantity of water which flows into the ditch in liters/sec. and determine the seepage velocity if the porosity of the sand is 0.22. EL.160m El.150m ditch Impervious layer Permeable and layer: t-15m layer, 1.5m Impervious layer thick L= 120m