Concept explainers
Find the degree of saturation at optimum moisture content.
Answer to Problem 6.1P
The degree of saturation at optimum moisture content is
Explanation of Solution
Given information:
The maximum dry unit weight of the soil
The optimum moisture content of the soil w is 17 %.
The specific gravity of soil
Calculation:
Determine the degree of saturation (S) using the relation.
Here,
Substitute
Therefore, the degree of saturation at optimum moisture content is
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Chapter 6 Solutions
MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, SI Edition, 9th Edition, [Instant Access], 1 term (6 months)
- For a given sandy soil, the maximum and minimum dry unit weights are 16.79 kN/m3, and 14.4 kN/m3, respectively. Given that Gs = 2.65, determine the moist unit weight of this soil when the relative density is 68.42% and the moisture content is 10.82%. Round off to two decimal places.arrow_forwardA moist soil has a void ratio of 0.65. The soil moisture content is 14% and its solids density or relative specific weight of solids is 2.7. Determine: a. What is the saturated unit weight in kN/m3?b. How much water, in kN/m3, needs to be added to the soil for it to be completely saturated?c. What would be the wet unit weight in kN/m3 when the degree of saturation is 70%?arrow_forwardSee table below: Determine the maximum dry unit weight of the soil (Ans: 19.8 kN/ ) Determine the optimum moisture content (Ans: 11%) Determine the degree of saturation at the optimum moisture content Gs = 2.60 (Ans: 99.30%)arrow_forward
- The moist unit weight of a given soil is 18.64KN/m^3 if the degree of saturation is 55%. But if the degree of saturation of the given soil is 80%, it's moist unit weight is 19.73 KN/m^3 A.) Compute the specific gravity of the soil B.) Compute the dry unit weight of the soil. C.) Compute the percent of soil solidsarrow_forwardQ1: For a soil in natural state, given e =0.8, w=24% , and Gs=2.68 (a)determine the moist unit weight, dry unit weight and degree of saturation. (b) If the soil is made complecly saturated by adding water, what would its moisture content at that time ? Also find the saturated unit wieght.arrow_forwardA clayey soil with specific gravity of 2.70 has natural moisture content of 16% at 70% degree of saturation. What will be its water content if, after soaking, degree of saturation becomes 90%.arrow_forward
- 1. The moist weight of (2.7 + 0.25A) x 10° m³ of soil is (55.5 +0.1C) x 103 kN. If the moisture content is (14 + 0.5B) % and the specific gravity of soil solids is (2.65 + 0.05 D), determine the following: a. Moist unit weight b. Dry unit weight c. Void ratio d. Porosity e. Degree of saturation f. Volume occupied by waterarrow_forwardA stratified soil has the following properties: h1 = 1.75m h2 = 2.5m h3 = 4.35m k1 = 2.25E-03 cm/sec k2 = 3.15E-04 cm/sec k3 = 4.75E-05 cm/sec What is the equivalent coefficient of permeability if the water flows parallel to the layer of soil (KeqH) in cm/sec?arrow_forwardThe moist mass of 0.1 ft3 of soil is 12.5 lb. if the moisture content is 14% and the specific gravity of soil solids 2.71; a) What is the value of moist unit weight? b) What is the value of dry unit weight? c) What is the value of void ratio?arrow_forward
- A stratified soil has the following properties: h1 = 1.75m h2 = 2.5m h3 = 4.35m k1 = 2.25E-03 cm/sec k2 = 3.15E-04 cm/sec k3 = 4.75E-05 cm/sec What is the equivalent coefficient of permeability if the water flows perpendicular to the layer of soil (KeqV) in cm/sec?arrow_forwardFor a saturated soil, the following are given: watercontent = 23%, Gs = 2.67. Determine the following:a) Saturated unit weightb) Dry unit weightc) Moist unit weight when the degree ofsaturation becomes 70%arrow_forwardThe moist unit weight of a soil is 119.5 lb/ft3. For a moisture content of 12% and Gs = 2.65, calculate: Degree of saturationarrow_forward
- Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage Learning