3 m 2 m 2m 4 m Ground surface Clay layer Water table A Sand layer Clay layer 71 = 16.15 kN/m³ 22= 18.55 kN/m³ 22sat=21.05 kN/m² 73sat 17.45 kN/m³
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The below figure shows a ground profile. Calculate the vertical total stress, vertical effective stress, horizontal total stress, horizontal effective stress and pore pressure at point A (assuming at rest lateral pressure factor K = 0.3 and unit weight of water γ = 10 kN/m3 ).
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- A concrete dam retains water to a height of 9 m. It has rows of sheet piling at both heeland toe which extend half way down to an impervious stratum. From a flow net sketchedon a transformed section, it is found that there are four flow channels and sixteen headdrops. The average horizontal and vertical permeabilities of the soil are 6 × 10^–3 mm/sand 2 × 10^–3 mm/s, respectively. What is the seepage in cubic meter per day, if the lengthof the dam is 150 meters?From the laboratory result of a sample taken from the field, the total volume of wet sample is 1x 10ˉ³ m³ and weight of wet sample is 2 kg. Water content is 12%. Gs = 2.80. emax = 0.68 and emin = 0.42 1. Which of the following gives the dry unit weight? a. 19.62 kN/m³ b. 21.26 kN/m³ c. 17.52 kN/m³ d. 23.54 kN/m³ 2. Find the void ratio. a. 0.167 b. 0.423 c. 0.292 d. 0.567 3. Find the relative density. a. 54.23% b. 43.46% c. 50.16% d. 49.15%A course sand sample is placed in the constant permeameter test. Water passes through the sample water with a constant head of 40cm and after 0.00167hr, 40grams of water have been collected. What is the coefficient of permeability of the sand in cm/sec if the sample is placed inside a 166cm container with a 7.89cm radius?