Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 6, Problem 6.2P
To determine
Calculate and plot the variation of dry density at various water contents and the various degree of saturation.
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The moist unit weight of a soil is 105 lb /ft3. Given that w = 15% and Gs = 2.7, determine
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For a given soil, the following are given: Gs = 2.6; moist unit weight = 17.05 kN/m3, and moisture content = 10.31%. Determine the weight of water, in kN, to be added per cubic meter of soil to reach 82% degree of saturation.
For a soil, suppose that D10 = 0.18 mm, D30 = 0.32 mm, and D60 = 0.78 mm. Calculate the uniformity coefficient and the coefficient of gradation.
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Principles of Geotechnical Engineering (MindTap Course List)
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- 3) For a given moist soil, given that volume = 33m3; mass = 33kg; moisture content = 10%; Gs = 2.7, calculate the following: a. Moist density (kg/m3) b. Dry density (kg/m3) c. Void ratio d. Porosity e. Degree of saturation (%) f. Volume occupied by waterarrow_forwardFor a given soil, the following are known, Gs = 2.70, moist unit weight is 20.3067kN/m3, and the moisture content of 15%. Determine the:1. Dry unit weight (in kN/m3). 2. Saturated unit weight unit weight (in kN/m3).3. Effective unit weight (γ′) of the soil sample (in kN/m3). 4. Void Ratio5. Porosity (in %).6. Degree of saturation (in %).7. Determine the volume of water in liters to be added per cubic meter of soil for a 100% degree ofsaturation.If the sample has weight of 50g, determine the:8. Weight of the solid9. Weight of the water10. Weight of the air11. Volume of solid12. Volume of water13. Volume of airarrow_forward4. An in-situ soil sample weigh 25 kg of 0.02 cubic meter with a moisture content of 7% and specific gravity of 2.8. Determine the following: Moist Unit Weight, Dry Unit Weight, Moist Density, Dry Density, Void Ratio, Porosity, and the Degree of Saturation. (Calculate the Unit Weight and Density in Metric and English Units).arrow_forward
- Calculate the dry unit weight, the saturated unit weight and the buoyant unit weight of a soil having a void ratio of 0.70 and a value of Gs = 2.72. Calculate also the unit weight and water content at a degree of saturation of 75%.arrow_forward1. A moist soil sample weighing 0.20 kg having a volume of 200 cm3 and dry unit weight of 16 kN/ m . After mixing water of 65 g, compute the moisture content of the soil.arrow_forwardThe moist unit weight of soil is 16.5 KN/ m3. If the water content is 15% and specific gravity of soil is 2.7, determine the following: Dry unit weight Porosity Degree of saturation Mass of water in kg/ m3to be added to reach full saturationarrow_forward
- A moist soil has a void ratio of 0.65. The soil moisture content is 14% and its solids density or relative specific weight of solids is 2.7. Determine: a. What is the saturated unit weight in kN/m3?b. How much water, in kN/m3, needs to be added to the soil for it to be completely saturated?c. What would be the wet unit weight in kN/m3 when the degree of saturation is 70%?arrow_forwardthe moist unit weight of soil at 18% moisture is 17.5 kN/m^3. Determine the mass of water per cubic meter that must be added to reach full saturation. The specific gravity of soil solids is 2,72. Answer in kg.arrow_forwardFor a saturated soil, the following are given: watercontent = 23%, Gs = 2.67. Determine the following:a) Saturated unit weightb) Dry unit weightc) Moist unit weight when the degree ofsaturation becomes 70%arrow_forward
- 11. Situation 11 - The moist unit weight and degree of saturation of a soil are given in the following table. a. Determine the unit weight of the soil in kN/m3 if s = 13%. Round off to two decimal places. bDetermine the unit weight of the soil in kN/m3 if s = 69%. Round off to two decimal places. c. Determine the saturated unit weight in kN/m3. Round off to two decimal places.arrow_forwardFor a given Soil, the following are known. Gs = 2.74, moist unit weight = 19Kn/m3 and moisture content = 17%.a. Determine the weight of water in KN to be added per cubic meter of soil for a100% degree of saturation.b. Determine the weight of water in KN to be added per cubic meter of soil for93% degree of saturation.arrow_forwardThe figure shows water flowing through saturated soil in the hatched area. Calculate the elevation pressure and total heads at points A, B and C. If the coefficient of permeability of the soil in the hatched area is 5 cm/sec and the cross sectional area of the soil sample is 15m2 calculate the water flow rate through the soil.arrow_forward
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