A granular soil was tested in the laboratory and found to have a max. and min, void ratios of 0.84 and 0.38 respectively. The sp.gr. of soil is 2. 65. If the moisture content of the soil is 9% and its moist unit weight is 18.64 kN/m3, a. What is the dry unit weight of the soil , in kN/m3? b. What is the in situ- void ratio of the soil sample? c. What is the relative density of the soil in the field, in %?
A granular soil was tested in the laboratory and found to have a max. and min, void ratios of 0.84 and 0.38 respectively. The sp.gr. of soil is 2. 65. If the moisture content of the soil is 9% and its moist unit weight is 18.64 kN/m3, a. What is the dry unit weight of the soil , in kN/m3? b. What is the in situ- void ratio of the soil sample? c. What is the relative density of the soil in the field, in %?
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter5: Soil Improvement And Ground Modification
Section: Chapter Questions
Problem 5.2P
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Help me with the following question, show the solution step by step and finalize your final answer by a 4 significant figure. and Box the final answer with the unit don't forget. Thank you for helping me.
Reminders: I attach an example problem as a guide only.. (2nd photo)
![PROBLEM #2:
A granular soil was tested in the laboratory and found to have a max. and min, void ratios
of 0.84 and 0.38 respectively. The sp.gr. of soil is 2. 65. If the moisture content of the soil is 9%
and its moist unit weight is 18.64 kN/m3,
a. What is the dry unit weight of the soil , in kN/m3?
b. What is the in situ- void ratio of the soil sample?
c. What is the relative density of the soil in the field, in %?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F22d76c0e-cfe5-4c9a-bc34-604ad2d37992%2F0467ce6c-2ef3-45cf-b81a-0ea7a1b7c005%2Fc62h88_processed.jpeg&w=3840&q=75)
Transcribed Image Text:PROBLEM #2:
A granular soil was tested in the laboratory and found to have a max. and min, void ratios
of 0.84 and 0.38 respectively. The sp.gr. of soil is 2. 65. If the moisture content of the soil is 9%
and its moist unit weight is 18.64 kN/m3,
a. What is the dry unit weight of the soil , in kN/m3?
b. What is the in situ- void ratio of the soil sample?
c. What is the relative density of the soil in the field, in %?
![EXAMPLE #1:
A sandy soil has a natural water content of 27.5% and bulk unit weight of 19.2 kN/m³. The void ratios
corresponding to the densest and loosest state are 0.51 and 0.87. Assume G = 2.7.
a. What is the in situ- void ratio of the soil sample?
b. What is the degree of saturation of the soil in its natural state?
c. What is the relative density of the soil, in percent?
Given: MC = 27. 5%
min = 0.51
G = 2.7
Ym - 19.2 kN /m?
emas = 0.87
1. Void ratio, e
2. Degree of Saturation, S
3. Relative density, D,
G(1 + MC)
Yw
G + Se
Ym =
max e
Ym =
D,
x 100
1+e
1+e Yw
emex-enin
0.87 - 0.7589
D, =
2.7(1 + 27.5%)
2.7 +S (0.7589)
19.2 =
(9.81)
19.2 =
(9.81)
x 100
1+e
1+0.7589
0.87 – 0.51
e-0.7589
S= 0.9784
D, = 30. 8605%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F22d76c0e-cfe5-4c9a-bc34-604ad2d37992%2F0467ce6c-2ef3-45cf-b81a-0ea7a1b7c005%2F9nqs6z_processed.jpeg&w=3840&q=75)
Transcribed Image Text:EXAMPLE #1:
A sandy soil has a natural water content of 27.5% and bulk unit weight of 19.2 kN/m³. The void ratios
corresponding to the densest and loosest state are 0.51 and 0.87. Assume G = 2.7.
a. What is the in situ- void ratio of the soil sample?
b. What is the degree of saturation of the soil in its natural state?
c. What is the relative density of the soil, in percent?
Given: MC = 27. 5%
min = 0.51
G = 2.7
Ym - 19.2 kN /m?
emas = 0.87
1. Void ratio, e
2. Degree of Saturation, S
3. Relative density, D,
G(1 + MC)
Yw
G + Se
Ym =
max e
Ym =
D,
x 100
1+e
1+e Yw
emex-enin
0.87 - 0.7589
D, =
2.7(1 + 27.5%)
2.7 +S (0.7589)
19.2 =
(9.81)
19.2 =
(9.81)
x 100
1+e
1+0.7589
0.87 – 0.51
e-0.7589
S= 0.9784
D, = 30. 8605%
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