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Answer: c) 25.9% Explanation: Given Data: • Void ratio, e = 0.35 Solution: The formula of porosity in terms of the void ratio is, n = e / 1+e Where, • n = Porosity of soil • e = Void ratio ∴ n = 0.35 / (1 + 0.35) ∴ n = 0.35 / 1.35 … Read more

Answer: a) the Unit weight of solids. Explanation: A function of the volume of solids is the unit weight of solids & that unit weight of solids does not change with the moisture content. Following are the functions of total volume: Bulk unit weights Dry unit weights Submerged unit weight

Answer: c) 70 m3 Explanation: Porosity is the ratio of volume of void to the total volume. ∴ n = (Vv / V ) x 100 ∴ 0.7 = (Vv / 100 ) x 100 ∴ Vv = 70 m3 Hence, the volume of void is 70m3.

Answer: d) 0.28 Explanation: Given Data: • Porosity of soil sample, n= 22%= 0.22 Solution: The formula of void ratio in terms of porosity, e = n / (1-n) e= 0.22 / (1-0.22) e= 0.28 Hence, the value of void ratio is 0.28

Answer: c) 0.53 Explanation: Given Data: • The ratio of saturated unit weight to dry unit weight, γ (sat.) / γd = 1.2 • The specific gravity of solids, G = 2.65 Solution: Saturated density of soil is, γ(sat.) = {(G + e) / (1+e)} γw….(i) Dry density of soil is, γd = (G/ 1+e) … Read more

Answer: c) 2 g/cc Explanation: Given Data: • Bulk density of soil sample = 2.4 g/cm3 • The moisture content of soil sample = 20% Solution: The dry density of soil = Bulk density of soil sample / (1 + Moisture content of soil sample) Dry density of soil = 2.4 / (1 + 0.2) … Read more

Answer: a) The ratio of the volume of air voids to the total volume of the soil sample Explanation: The ratio of the volume of air voids to the total volume of the soil sample is the percentage void ratio & it is expressed as a percentage. na = (Va/ V) x 100 Where, Va … Read more

Answer: d) ac = 1 – S Explanation: The ratio of the volume of air voids to the volume of voids in the air content. ac = Va / Vv …(i) The volume of water volume to the volume of voids in a given soil mass is called a degree of saturation. S = Vw … Read more

Answer: b) Ratio of the volume of air voids to volume of total voids in the soil mass Explanation: The volume of air voids to the volume of total voids in soil mass is called air content. Air content is related to the degree of saturation. When we subtract the value of the degree of … Read more

Answer: a) True Explanation: The value of the degree of saturation in a fully dried soil sample is zero since the value of water volume is equal to zero. The formula of the degree of saturation: S = Vw/Vv …(i) Where, Vw = Volume of water Vv = Volume of void In the case of … Read more