Concept explainers
(a)
Find the void ratio of soil specimen.
(a)
Answer to Problem 2.1P
The void ratio of soil is 0.76.
Explanation of Solution
Given information:
The mass (m) of the soil is
The volume (v) of the soil is
The moisture content (w) is 15%.
The specific gravity
Calculation:
Consider the unit weight of water
Calculate the moist unit weight of the soil
Calculate the dry unit weight of the soil
Calculate the void ratio (e) using the relation as shown below:
Hence, the void ratio of soil is 0.76.
(b)
Calculate the porosity of soil.
(b)
Answer to Problem 2.1P
The porosity of soil is
Explanation of Solution
Calculation:
Refer to part (a).
The void ratio of soil is
Calculate the void ratio
Substitute
Hence, the porosity of soil is
(c)
Calculate the dry unit weight of soil.
(c)
Answer to Problem 2.1P
The dry unit weight of soil is
Explanation of Solution
Calculation:
Calculate the dry unit weight of the soil
Refer to part (a).
Base on result, the dry unit weight of the soil is
Thus, the dry unit weight of soil is
(d)
Calculate the moist unit weight of soil.
(d)
Answer to Problem 2.1P
The moist unit weight of soil is
Explanation of Solution
Calculation:
Calculate the moist unit weight of the soil
Refer to part (a).
Base on result, the dry unit weight of the soil is
Thus, the moist unit weight of soil is
(e)
Calculate the degree of saturation.
(e)
Answer to Problem 2.1P
The degree of saturation is
Explanation of Solution
Calculation:
Refer to part (a).
The void ratio of soil is
Calculate the degree of saturation
Hence, the degree of saturation is
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Chapter 2 Solutions
Principles Of Foundation Engineering, Si Edition
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- 3. A saturated soil sample has a unit weight of 23 Kn/m^3 and specific gravity of 2.69. Compute the Dry Unit weight in English units, void ratio, Porosity, moisture content and the degree of saturation.arrow_forwardA saturated soil specimen has w = 36% and ᵞd = 85.43 lb/ft3. Determine: Saturated unit weight (in lb/ft3)arrow_forwardFor a normally consolidated soil, the following is given: Determine the following: a. The compression index, Cc. b. The void ratio corresponding to pressure of 200 kN/m2arrow_forward
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- 4. 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_forwardEstimate the vertical coefficient of permeability for a uniform clay deposit where representative test results are as shown: LL = 92, PL = 34 percent of clay size particles in the soil =40 void ratio ( approximate ) = 1.75arrow_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
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