Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 3, Problem 3.2P
(a)
To determine
Find the moisture content of the soil sample.
(b)
To determine
Find the moist density of the soil sample.
(c)
To determine
Find the dry density of the soil sample.
(d)
To determine
Find the void ratio of the soil sample.
(e)
To determine
Find the porosity of the soil sample.
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Soil Mechanics
(1) For a soil, the following are given: Specific gravity = 2.67, moist unit weight = 17.6 kN/m³, water
unit weight = 9.81 kN/m3 and moisture content = 12 %. Determine
(a) Dry unit weight,
(b) Void ratio,
(c) Porosity,
(d) Degree of saturation
QI/ For the given dry sandy soil specimen:
G=2.68, weight of dry soil = 100 gr, dry density= 1.6g/cm', emax = 0.7, emin = 0.48.
Find the following
1. Volume of soil solid
2. Volume of void
3. Void ratio
4. Porosity
5. Air content
6. The relative density
7. What is the description of this sandy soil depending on the relative density?
8. What is the volume of water which must be added to this dry sample to reach the fully
saturated state? What will be the total density ?
9. What are the maximum and minimum dry densities?
-9. A soil sample has a natural water content of 22.5%
and it is known to have a specific gravity of 2.6. In
order to determine the moist density of soil, a portion
of soil weighing 224g is put in a 500 cm³ container.
It is filled 382 cm³ of water to fill the container.
a)
Compute the void ratio of the soil
(A. 0.82
B 0.68
D. 1.04
C. 0.89
b)
C)
Compute the porosity of the soil
A
B. 47.09%
D. 50.98%
45.05%
40.48%
Compute the degree of saturation of the soil
(A. 71.34%
B. 65.73%
C.
86.03%
D. 56.25%
Chapter 3 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- What amount of water in (gr) do we have to add to a soil sample to increase its volume to 25 cm3? We know the following information about this soil: - Soil’s specific gravity is 2.5. - Void ratio (e) is 0.5. - Moisture content is 20%. - The water density is 1 gr/cm3. Hint 1: First calculate the saturation value. Hint 2: When soil is fully saturated, if we add V1 amount of water (m3), the volume of soil will increase directly by V1 (m3). Hint 3: Use the following equation to find the answer: Question 17Answer a. 50 b. We do NOT have enough information c. 12.5arrow_forward. The moist weight of 5.66 x 103 m³ of soil is 102.3 x 103 kN. The moisture content and the specific gravity of the soil solids are determined in the laboratory to be 11% and 2.7, respectively. Calculate the following a. Moist Unit weight (kN/m³) b. Dry unit weight (kN/m³) c. Void ratio d. Porosity e. Degree of saturation (%) f. Volume occupied by water (m³)arrow_forward435 grams of moist granular soil was tested in the laboratory and was found to have a specific gravity of soil solids of 2.65. If the air void ratio is approximated to be 16% and the volume of the solids is 116 cubic centimeters. Determine the following: (3 decimal places) a. Void ratio. b. Bulk density, g/cc. c. Amount of water to be added to attain saturated state, g.arrow_forward
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