Question

CHAPTER Two 2-3. An undisturbed chunk of soil has a wet weight of 62 lb and a volume of o.s6 ft. When dried out in an oven, the soil weighs S0 Ib. If the specific gravity o solids is found to be 2.64, determine the water con- tent, wet unit weight of soil, dry unit soil. 2-13. The wet unit weight of a soil sample is 18.55 kN/ Its specific gravity of solids and water content are 2.72 and 12.3%, respectively. Find the dry unit weight, void ratio, and degree of saturation t weight of soil. 2-14. A fine sand has an in-place umit weight of 1885 kN/m void ratio, porosity, and degree of saturation. 2-4. A 72-cm2 sample of moist soil weighs 141.5 g When it is dried out in an oven, it weighs 122.7 g. The spe cific gravity of solids is found to be 2.66. Find the water content, void ratio, porosity, degree of satura and a water content of 5.2%. The specific gravity of sol ids is 2.66. Void ratios at densest and loosest conditions are 0.38 and 0.92, respectively. Find the relative density 2-15. Derive an 2-16. Derive an expression for n-ne), where n is porosity 2-17. Asand sample has a porosity of38% and specific 2-18. A proposed earthen dam will contain 5,000,000 m ratio and n is porosity. tion, and wet and dry unit weights 2-5. A soil specimen has a water content of 18% and a wet unit weight of 118.5 lb/ft. The specific gravity of sol- idsis found to be272. Find the dry unitweight, void and e is void ratio. gravity of solids of 2.66. Find the void ratio and wet unit weight in lb/ft3 if the degree of saturation is 35%. ratio, and degree of saturation. 2-6. An undisturbed sodl sample has a void ratio of 0.56. water content of 15%, and specific gravity of solids of 2.64. Find the wet and dry unit weights in lb/f porosity, and degree of saturation. of earth. Soil to be taken from a borrow pit will be compacted to a void ratio of 0.78. The vold ratio of soil in the borrow pit is 1.12. Estimate the volume of soil that must be excavated from the borrow pit 2-7, A í 00% saturated soil has a wet unit weight of 112.8 lb/ft. and its water content is42%. Find the void ratio and specific gravity of solids. 2-19. A soil sample with a water content of 14.5% and unit 2-8 A 100% saturated soil has a dry unit weight of 15.80 kN/m, and its water content is 26%. Find the weight of 128.2 1b/ft was dried to a unit weight of 118.8 lb/ft without changing its void ratio. What is its new water content? t, void ratio, and specific ity of solids. and spe- 2-9. A 100% saturated soil has a void ratio of 1.33 and a water content of 48%. Find the unit weight of soil in cific gravity of solids of a given sand are 17.98 kN/m'. 62%, 76%, and 265, respectively. 1. If the minimum void ratio for this soil is 0.35 lb/ft' and specific gravity of solids 2-10. The water content of a 100% saturated soil is 35%, and the specific gravity of solids is 2.70. Determine what would be its maximum void ratio? 2. What is its unit weight in the loosest condition? the void ratio and unit weight in lb/ft 2-21. A soil sample has a degree of saturation of 30.4% and void ratio of 0.85, How much water must be added 2-11. A soil sample has the following data: per cubic foot of soil to increase the degree of satura tion to 100%? I. Degree of saturation 42%. 2. Void ratio 0.85. 3. Specific gravity of solids 2.74. Find its water content and unit weight in lb/ft 2-22. A soil sample has the following properties: 2-12. A 0.082-m2 sample of soil weighs 1.445 kN. When it is dried out in an oven, it weighs 1.301 kN. The spe cific gravity of solids is found to be 2.65. Find the water content, void ratio, porosity, degree of satura- 1. em ax = 0.95. 2. Emin 0.38. 3, Dr = 47%. 4. G, 2.65. Find dry and saturated unit weights in both lb/ft and kN/m tion, and wet and dry unit weights.

the only question to answer are

2-5

2-7

2-10

2-17

2-19

thank you

Answer 1

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