Problem 4 Consider the upward flow of water through a layer of sand in a tank as shown in the figure. Properties of sand: Void ratio e = 0.52 Specific gravity of solids = 2.67 1. Calculate the effective stress at B. 2. What is the upward seepage force per unit volume of soil? 3. What is the rate of upward seepage of water in m³/hour if K = 2 x 10-³ m/sec and area of tank is 0.45 m²? h=1.5 0.70 m 2m In flow Ysat B H₂o valve open 1% 1 m

Problem 4 Consider the upward flow of water through a layer of sand in a tank as shown in the figure. Properties of sand: Void ratio e = 0.52 Specific gravity of solids = 2.67 1. Calculate the effective stress at B. 2. What is the upward seepage force per unit volume of soil? 3. What is the rate of upward seepage of water in m³/hour if K = 2 x 10-³ m/sec and area of tank is 0.45 m²? h=1.5 0.70 m 2m In flow Ysat B H₂o valve open 1% 1 m

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.13P

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Refer to Figure 8.13. The magnitude of the line load q is 45 kN/m. Calculate and plot the variation of the vertical stress increase, between the limits of x = 10 m and x = +10 m, given z = 4 m. FIG. 8.13 Line load over the surface of a semiinfinite soil mass
Consider the upward flow of water through a layer of sand in a tank as shown in Figure QI(c), For the sand, the following are given: void ratio (e) = 0.52 and specific gravity of solid = 2.67. Determine: (i) Total stress, pore water pressure and effective stress at points A and B (ii) The upward seepage force per unit volume of soil.
11. Consider the downward flow of water through a layer of sand in the tank shown. (see picture below) Void ratio of the soil = 0.52 Specific Gravity = 2.70 Compute the value of h1. (Answer: 0.436) Compute the effective stress at A. (Answer: 17.44 kPa) Compute the effective stress at B. (Answer: 31.98 kPa) Compute the seepage force per unit volume. (Answer: 3.57 kN/m3)
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Evaluate the figure shown and solve what is being asked in the problem with the following given: e = 0.42 G = 2.8 H1 = 0.3 m H2 = 3.3 m h1 = 0.9 m z = 1.2 m a. What is the saturated unit weight of sand in kN/m³? b. Calculate the total stress at point C in kPa. c. Calculate the effective stress at point B in kPa.
The figure shows a layer of granular soil in a tank with an upward seepage by applying water through the valve at the bottom of the tank. The loss of head caused by upward seepage between the levels of A and B is 0.71m. The void ratio of the soil is 0.511 ,its specific gravity is 2.719, h1=0.99m, h2=2.06m, h3=2.91m. 1. Compute the effective stress at C in kPa. 2. .Compute the critical hydraulic gradient. X IN FIGURE IS 1 = 0.71m
Consider the upward flow of water through a layer of sand in a tank as shown in the figure below. The void ratio of the sand is e=0.52 and the specific gravity of solids is 2.67. Calculate the total stress, pore water pressure, and effective stress at points A and B. What is the upward seepage force per unit volume of soil?
2) A soil profile consisting of three layers is shown in the Figure. A) Calculate the values of σ, u and σ' at points A,B,C and D if Layer 1: H1=5m, e=0.7, Gs=2.69 Layer 2: H2=8m, e=0.55, Gs=2.7 Layer 3: H3=3m, w=38%, e=1.2 B) What is the change in effective stress at point C if: If the water table drops by 2m? If the water table rises to the surface up to point A? Water level rises 3 m above point A due to flooding?
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