# つ3.781291ProblemsG,= 2.73,3.13 When the moisture content of a soil is 26%, the degree of saturation is 72%and the moist unit weight is 108 lb/ft³. Determine:a. Specific gravity of soil solidsb. Void ratioc. Saturated unit weight3.14 For a given soil, the following are known: G.y = 20.6 kN/m', and moisture content, w = 16.6%. Determine:a. Dry unit weightb. Void ratio1% and2.74, moist unit weight,of 0.92Chec. Porosityd. Degree of saturation3.15 Refer to Problem 3.14. Determine the mass of water, in kg, to be added percubic meter (m³) of soil fora. 90% degree of saturationb. 100% degree of saturation ,443.16 The moist density of a soil is 1935 kg/m³. Given w = 18% and G, = 2.7,determine:anda. Dry densityb. Porosityc. Degree of saturationd. Mass of water, in kg/m³, to be added to reach full saturation3.17 For a moist soil, given the following: V = 0.25 ft³; W =G = 2.66. Determine:a. Dry unit weightb. Void ratio2.65ed tolioe30.75 lb; w = 9.8%; andS.c. Volume occupied by water3.18 For a given soil, p, = 1750 kg/m³ and n =a. Void ratio0.36. Determine:b. Specific gravity of soil solids3.19 The moisture content of a soil sample is 22% and the dry unit weight is15.65 kN/m³. If G = 2.67, what is the degree of saturation?3.20 For a given soil, w = 14.8%, G, = 2.71, and S = 72%. Determine:a. Moist unit weight in lb/ft³b. Volume occupied by water3.21 The degree of saturation of a soil is 55% and the moist unit weight is 106 lb/ft³.%3DWhen the moist unit weight increased to 114 lb/ft°, the degree of saturationloIdgincreased to 82.2%. Determine:a. G.b. Void ratio3.22 Refer to Figure 3.14. After the construction of a concrete retaining wall, back-fill material from a nearby borrow pit was brought into the excavation behindbnsinu the wall and compacted to a final void ratio of 0.8. Given that the soil in theborrow pit has void ratio of 1.1, determine the volume of borrow materialपरदान2 needed to construct 1 m2 of compacted backfill.pasneplaced

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How to solve 3.18

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Step 1

Given data:

Step 2

a)

Calculate void ratio:

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