MindTap Engineering, 1 term (6 months) Printed Access Card for Das/Sivakugan’s Principles of Foundation Engineering, 9th
9th Edition
ISBN: 9781337705202
Author: Das, Braja M., SIVAKUGAN, Nagaratnam
Publisher: Cengage Learning
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Chapter 2, Problem 2.3P
To determine
Find the new void ratio and moist unit weight of soil.
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The top 500 m of a site consists of a clayey sand with void ratio of 0.90 and water content of 20.0%. The specific gravity of the soil grains is 2.68.
When the ground is compacted at the same water content, there is 45 mm reduction in the thickness of this layer. Determine the new void ratio and the unit weight of the soil.
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The dry density of a sand with a porosity of 0.387 is 1600 kg/ m3, determine the void ratio, specific gravity, and saturated unit weight of soil in KN/ m3.
3. A sand has a natural water content of 5% and bulk unit weight of 18.0 kN/m3. The void ratios corresponding to the densest and loosest state of this soil are 0.51 and 0.87. Find the relative density and degree of saturation.
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MindTap Engineering, 1 term (6 months) Printed Access Card for Das/Sivakugan’s Principles of Foundation Engineering, 9th
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- A fine, dry sand with an in-place unit weight of 17. 28 KN/m^3 has a spocific gravity of solids of 2.62. The void ratio at its densest condition is 0.368 and the void ratio at the loosest condition is 0.938. Determine the relative density of the soil.arrow_forwardThe effective unit weight of soil is 10.29 KN/M3 having a void ratio of 62%.Compute the bulk density of the soil.arrow_forwardA 3 layer soil has the following properties from top to bottom. Obtain the equivalent vertical coefficienct of permeability, in cm/sec, round off to 7 decimal places, and obtain the equivalent horizontal coefficient of permeability, in cm/sec, round off to 5 decimal places.arrow_forward
- A saturated soil specimen has w = 36% and ᵞd = 85.43 lb/ft3. Determine: i) Void ratio ii) Porosityarrow_forwardThe top 500m of a site consists of a clayey sand with a void ratio of 0.90 and a water content of 20.0%. The specific gravity of the soil grains is 2.68. When the ground is compacted at the same water content, there is 45mm reduction in the thickness of this layer. Determine the new void ratio and the unit weight of the soil.arrow_forwardDetermine the relative density of a cohesionless soil having void ratio 0.5. The void ratio of the soil in the loosest and most dense state is 0.75 and 0.45 respectively.arrow_forward
- The dry unit of a sand with a porosity of 0.387 is 1600kg/cu.m. Determine the following:a) Void ratiob) Sp.gr. of soilc) Saturated unit weight of soil in KN/cu.m.arrow_forwardthe moist unit weight of a soil is 19.2kN/m3. Given that Gs = 2.69 and w =9.8%, determine the void ratio, dry unit weight and degree of saturationarrow_forwarda. A soil specimen with volume of 0.60x10-4 m3 , weighs 0.105 kg. Its dry weight is 0.0802 kg, and Gs is 2.65. Compute • Water content m, % • Void ratio e and porosity n Degree of saturation Sr, %arrow_forward
- 14. Situation 14 - A 3-layer soil has the following properties from top to bottom: a. Obtain the equivalent horizontal coefficient of permeability, in cm/sec. Round off to five decimal places. b. Obtain the equivalent vertical coefficient of permeability, in cm/sec Round off to seven decimal places.arrow_forwardA saturated soil specimen has w = 36% and ᵞd = 85.43 lb/ft3. Determine: Void ratioarrow_forwardA sandy soil has in place unit weight 18.5 kN/m3 and water content 12%. The void ratio at the densest condition is 0.361, and at the loosest condition is 0.94. Consider Gs = 2.65. Calculate: a. The relative density b. Maximum wet unit weightarrow_forward
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