Concept explainers
(a)
Calculate the moist unit weight of soil.
(a)
Answer to Problem 3.7P
The moist unit weight of soil is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Calculate the moist unit weight of the soil
Substitute
Hence, the moist unit weight of soil is
(b)
Calculate the dry unit weight of soil.
(b)
Answer to Problem 3.7P
The dry unit weight of soil is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Refer to part (a).
The moist unit weight of soil is
Calculate the dry unit weight of the soil
Substitute
Hence, the dry unit weight of soil is
(c)
Calculate the void ratio of soil.
(c)
Answer to Problem 3.7P
The void ratio of soil is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Refer to part (b).
The dry unit weight of soil is
Consider the unit weight of water
Calculate the void ratio
Substitute
Hence, the void ratio of soil is
(d)
Calculate the porosity of soil.
(d)
Answer to Problem 3.7P
The porosity of soil is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Refer to part (c).
The void ratio of soil is
Calculate the void ratio
Substitute
Hence, the porosity of soil is
(e)
Calculate the degree of saturation.
(e)
Answer to Problem 3.7P
The degree of saturation is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Refer to part (c).
The void ratio of soil is
Calculate the degree of saturation
Substitute
Hence, the degree of saturation is
(f)
Calculate the volume of water.
(f)
Answer to Problem 3.7P
The volume of water is
Explanation of Solution
Given information:
The volume
The moist mass
The moisture content
The specific gravity of the soil solids
Calculation:
Refer to part (a).
The moist unit weight of soil
Refer to part (b).
The dry unit weight of soil
Consider the unit weight of water
Calculate the volume of water
Substitute
Therefore, the volume of water is
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Chapter 3 Solutions
MINDTAP ENGINEERING FOR DAS/SOBHAN'S PR
- the 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_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_forwardThe moist unit weight of a soil is 173.4 pcf. Given that the moisture content to be 30% and Specific Gravity of 2.69. Find the following in SI Units: Dry Unit weight, Porosity Degree of Saturation.arrow_forward
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- 3. The mass of a moist soil sample is 1 kg, and its oven dry mass is 843.2 grams. The specific gravity of soil solids is to be 2.8. If the void ratio of the soil in the natural state is 0.80, find the following: a. Dry and Moist Density of the soil in kN/m^3 and pcf. b. Dry and Moist Unit Weight in kN/m^3 and pcf. c. Moisture Content d. Saturation.arrow_forwardA moist soil has a unit weight of 125pcf. Given the specific gravity of solids = 2.67 and the moisture content= 13%, Determine the weight of water per unit volume needed for saturation.arrow_forwardFor a soil, the following are given: Gs = 2.67, moist unit weight γ = 17. 6 kN/m3, and moisture content w = 10.8 %. Determinea. Dry unit weightb. Void ratioc. Porosityd. Degree of saturationarrow_forward
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