Homeworks of chapter 5 1. Figure below shows the soil proile at a site for a proposed building. The soil is a homogeneous, poorly graded sand. Determine the increase in vertical effective stress at which a soil element at a depth of 3 m, under the center of the building, will fail if the increase in lateral effective stress is 20% of the increase in vertical effective stress. The coefi- cient of lateral earth nrescure at rest K. is 0 5. Assume all

Homeworks of chapter 5 1. Figure below shows the soil proile at a site for a proposed building. The soil is a homogeneous, poorly graded sand. Determine the increase in vertical effective stress at which a soil element at a depth of 3 m, under the center of the building, will fail if the increase in lateral effective stress is 20% of the increase in vertical effective stress. The coefi- cient of lateral earth nrescure at rest K. is 0 5. Assume all

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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need fast and complete solution A 19-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.48 and specific gravity of 2.62. Above the water table, the soil has a degree of saturation equal to 49.59%. Direct shear test conducted on the soil shows that the an angle of internal friction of 23.53° and cohesion of 17.41 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 8 m. below the ground surface? Round off to two decimal places.
A 19-m thick soil has water table 5 m. below the ground surface. The soil has a void ratio of 0.5 and specific gravity of 2.67. Above the water table, the soil has a degree of saturation equal to 40.21%. Direct shear test conducted on the soil shows that the an angle of internal friction of 22.76° and cohesion of 15.63 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 9 m. below the ground surface?
A)Plot graphically all the vertical stresses, pore water and effective vertical stresses throughout the depth. B)How would the effective vertical stress value at the midpoint of the clay layer change if the groundwater level increased 2 m? (g = 10 m / s2)
A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320 kPa; The specimen failed when the deviator stress is 460 kPa. Compute the normal stress in kPa on the plane of max shear stress a.550 b.141.42 c.208.9 d.119.03
A 17-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.41 and specific gravity of 2.64. Above the water table, the soil has a degree of saturation equal to 42.89%. Direct shear test conducted on the soil shows that the an angle of internal friction of 27.61° and cohesion of 17.01 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 7 m. below the ground surface? Round off to two decimal places.
A 16-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.42 and specific gravity of 2.62. Above the water table, the soil has a degree of saturation equal to 49.96%. Direct shear test conducted on the soil shows that the an angle of internal friction of 24.25° and cohesion of 15.13 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 8 m. below the ground surface? Round off to two decimal places.
20. A 17-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.53 and specific gravity of 2.65. Above the water table, the soil has a degree of saturation equal to 40.67%. Direct shear test conducted on the soil shows that the an angle of internal friction of 26.04° and cohesion of 17.17 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 9 m. below the ground surface? Round off to two decimal places.
A CD triaxial test was conducted on a loose sand. The axial stress was held constant and the radial stress was increased until failure occurred. At critical state, the radial stress was greater than the axial stress. Show that, using Mohr’s circle and geometry, the slip plane is inclined at (π/2)/2-fcs¢/2 to the horizontal plane.
2 Refer to the soil profile shown in figure below CALCULATE TOTAL STRESS (ot) AT POINT B put of G.W.T Sand 5m Y sat = 20. 9 Clay 4m Ysat = 17. 8 Let the point A at depth "0", point B at depth "Sm". and point C at depth 9m Select one: Select one: O a. 102.3 KN/M2 Ob. 107 KN/M2 O c. 109 KN/M2 O d. 104.5 KN/M2 Next page evious page
The soil profile at a road construction site is as shown in figure (not to scale). A large embankment is to be constructed at the site. The ground water table (GWT) is located at the surface of the clay layers, and the capillary rise in the sandy soil is negligible. The effective stress at the middle of the clay layer after the application of the embankment loading is 180 kN/m². Take unit weight of water, Yw = 9.81 kN/m3. Embankment load boudi Sand GWT 2m y = 18.5 kN° it enit Clay Specific gravity, G̟ = 2.65 Water content, w = 45% Compession index, C. = 0.25 6m %3D %3D Impermeable layer The primary consolidation settlement (in m, round off to two decimal places) of the clay layer resulting from this loading will be
A soil profile consists of two layers of soil with clay layer underlying the sand layer. The sand layer has a unit weight of 20 kN/m^3 having a thickness of 4 m. and the unit weight of the 2.5m layer of clay is 18 kN/m^3. Compression index of the clay is 0.22 with a void ratio of 1.30. Compute the effective stress (kPa) at the mid height of clay. Calculate the final settlement of the clay layer (mm) due to an increase of pressure of 30 kPa at the mid-height of the clay. Calculate the settlement (mm) when the water table rises to the ground surface.
A 19-mm thick soil has water table 5m. below the ground surface. The soil has a void ratio of 0.55 and specific gravity of 2.63. Above the water table, the soil has a degree of saturation equal to 44.53%. Direct shear test conducted on the soil shows that the an angle of internal friction of 27.48° and cohesion of 16.27 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 9m. below the ground surface?