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- For a natural silty clay the liquid limit is 55,the plastic limit is 28,and the percent finer than 0.002mm is 29%.Estimate its activity.A bed of sand consists of three horizontal layers of equal thickness. The value of k for the upper and lower layers is 1x10-4 m/s. What is the ratio of the average permeability of the bed in the horizontal direction to that in the vertical direction?A stratum of normally consolidated clay 7 m thick is located at a depth 12m below ground level. The natural moisture content of the clay is 40.5 per cent and its liquid limit is 48 per cent. The specific gravity of the solid particles is 2.76. The water table is located at a depth 5 m below ground surface. The soil is sand above the clay stratum. The submerged unit weight of the sand is 1 1 kN/m3 and the same weighs 18 kN/m3 above the water table. The average increase in pressure at the center of the clay stratum is 120 kN/m2 due to the weight of a building that will be constructed on the sand above the clay stratum. Estimate the expected settlement of the structure in cm. a. 9.55 b. 4.96 c. 4.83 d. 23.3
- In natural state, a moist soil has a volume of 0.33 ft3 and weighs 39.93 lb. The oven dry weight of the soil is 34.54 lb. If Gs= 2.71, calculate the void ratio.In an undisturbed soil formation, it is known that the dry unit weight is 18.06 kN/m3. The specific gravity of the soil particles is 2.75. (a) What is the saturated wet unit weight of the soil, in kN/m3 and pcf? (b) What is the submerged effective weight of the soil, in kN/m3 and pcf? (c) What is the submerged effective density (Mg/m3)?at 0.45 porosity the hydraulic conductivity of sand is 0.010 .what is hydraulic conducitvity at m = 0.50
- A sample of soft saturated clay weighs 345 grams and has a volume of 195cc. After oven drying, the soil weighs 215 grams. Calculate the values of saturated unit weight, void ratio and specific gravity.The initial void ratio of an inorganic clay is found to be 0.65, while the specific gravity of solids is 2.68. Determine the saturated density in kg/m3.In its natural state, a moist soil has a volume of 0.33 ft3 and weighs 39.93 lb. The oven-dried weight of the soil is 34.54 lb. If Gs=2.67, calculatea) Moisture content (%) b) Moist unit weight (lb/ft3)c) Dry unit weight (lb/ft3) d) Void ratio, ee) Porosity, n f) Degree of saturation, S (%)
- A sample of soft saturated clay has a volume of 100cu.m. and weighs 175 gr. If the oven dry unit weightis 120 gr.a) Compute the water content of clayb) Compute the void ratio of the clayc) Compute the sp.gr. of the clayA saturated sample of inorganic clay has a volume of 21.4 cm3 and weighs 36.7 g. After drying, the volume is 13.7 cm3. The weight of dry soil is 23.2 g. Determine the following: (a) Water content, (b) specific gravity, (c) void ratio, (d) saturated unit weight, (e) dry unit weight, (f) shrinkage limit.A soil sample has a bulk unit weight of 20.0 kN/m^3 at a water content of 8.0%. Use Gs=2.56 Determine the porosity.