Problem Ex. Consider the upward flow of water through a layer of sand in a tank as shown in Figure.1.5 m0.7 mI m2 mValve (open)InflowO SandFor the sand, the following are given: void ratio (e) = 0.52 and specific gravity of solids (G.) = 2.67.Calculate the total stress, pore water pressure, and effective stress at points A and B. What is the upwardseepage force per unit volume of soil?Total stress, porewater pressure, effective stress.Point At BTotal stress(kN/m?)PorewaterpressureEffectivestressUpward seepage force.

Answered: Image /qna-images/answer/f4b996ce-1483-45dc-94b6-aeb1a3083ce8.jpg

Answered: Problem Ex. Consider the upward flow of…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Problem 2 Plot the stress profile for total stress, effective stress and pore water pressure. Show all calculation. A Dry sand 0.61 G=266 Saturated sand. e=0,48 G=267 Clay
A 25 m thick layer of clay is underlain by a layer of silt, as shown in the Figure. 1. Determine the effective stress at point A when Z = 3 m. 2. Determine the effective stress at point B when h=3 m. 3. By changing h and Z, would you expect that the effective stresses at A and B can have the same value? wy Z 12 m B Clay e=0.6, G₁-2.69 Clay w=30% Silt w=50%, G,=2.70
Figure B: Stress diagram Total Stress (o) Pore Water Pressure (u) Effective Stress (o') 26.2 kPa 26.2 kPa -2.0 m 71.2 kPa 25 kPa i) ?? kPa -4-5 m -9.0 m i) ?? kPa 70 kPa 90.3 kPa Figure B Stress diagram By referring to the figure B, calculate the pore water pressure at depth 2m below the ground surface if the is a surcharge of 50 kPa at the ground surface. 50 kPa 0 kPa 10 kPa 100kPa
Consider the soil profile depicted in the figure below. The water table is located 3 m below the ground surface. Calculate the vertical effective stress at Point A in kPa (acceptable tolerance = 2%).
Given: Permeability, k = 40 x 104 cm/s Saturated unit weight of the soil = 20 kN/m³ Other information shown in the Figure E3-3 Determine the following: (a) Quantity of Discharge (b) Total vertical stress at Points B and D (c) Pore-water pressure at Points B and D (d) Effective vertical stress at points B and D 20.0 m 6.5 m 5.0 m 10.5 m Water YAY Concrete Impervious Figure E3-3 1.0 m VAYAYAY 5.0 m
Q1 A 25 m thick layer of clay is underlain by a layer of silt, as shown in the Figure. 1. Determine the effective stress at point A when Z=3 m. 2. Determine the effective stress at point B when h=3 m. 3. By changing h and Z, would you expect that the effective stresses at A and B can have the same value? WIZ 1² W.T 12 m B Clay e=0.6, G.-2.69 Clay w=30% Silt w=50%, G, 2.70
N B 0 Horizontal The stresses shown in the figure are applied at a point in a dry clayey sand soil mass. A= 50 kPa and B= 125 kPa The shear strength parameters of the clayey sand are: c'= 9kPa and p'=29° 0=30° a) The value of the shear stress, T, is slowly increased. What value would cause shear failure at this point (in kPa)? b) At failure, what angle does the failure plane make with the horizontal (in degrees)?
Problem 2 Plot the stress profile for total stress, effective stress, and pore water pressure. Show all calculation. Diy sand 0.61 Saturated sand 0.48. G-267 Clay
1.A dry sand is known to have an angle of internal friction of 29. A triaxial test is planned, where the confining pressure will be 41 kPa. What is the maximum axial stress, in kPa, (major principal stress) that can be applied? Calculate the value to 1 decimal place. Do not provide units in your answer. 2.A clay soil is subjected to a triaxial test under unconsolidated-undrained conditions. At failure, the major and minor principal stresses are 8401 psf and 4875 psf, respectively. What is the shear strength of this soil if the confining pressure is doubled? Provide your answer in psf with no decimals.
4.1 A line load of q = 60kN/m with a = 0 is placed on a ground surface as shown in Figure P4.1. Calculate the increase of pore water pressure at M immediately after application of the load for the cases given below. (a) z = 10m, x = 0m, v=0.5, A=0.45. (b) == 10m, x= 2m, v= 0.45, A=0.6. 2 m 4. G.W.T. Clay XI 1
1. A soil profile is shown in Figure below. Calculate the total stress, pore water pressure, and effective stress at points A and D. Dry sand G.-2.68 *»0.6 2 m 2m Groundwater table Clay G₁-2.72 e-09
A soil profile consisting of three soil layers is shown. Assume: layer 1 as drysoil. Characteristics of the layers are: a=4 b=7 c=5 d=1 Determine:a.) The effective stress at Point Cb.) The maximum Neutral Stress at Point D

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