A-retaining wall is 10m high, and the back surface of the wall is vertical and smooth. The wall isretaining two layers of soil, which is horizontal on the surface and applied the uniform load ofq=20kPa. The upper layer is the medium sand, with the unit weight y, = 18.5kN/m³, theinternal friction angle = 30°. and the layer thickness h = 3m; The lower layer is the coarse-sand, with unit weight 72 = 19.0kN/m³, the internal friction angle = 35; Calculate theactive earth pressure and the total active thrust acting on the wall..

Given Data Determine active earth pressure (pa) and total active thrust (Pa).

A retaining wall is 10m high, and the back surface of the wall is vertical and smooth. The wall is retaining two layers of soil, which is horizontal on the surface and applied the uniform load of q=20kPa. The upper layer is the medium sand, with the unit weight y₁ = 18.5kN/m³, the internal friction angle ₁ = 30°, and the layer thickness h = 3m; The lower layer is the coarse sand, with unit weight 72 = 19.0kN/m³, the internal friction angle ₂ = 35°; Calculate the active earth pressure and the total active thrust acting on the wall..

A retaining wall is 10m high, and the back surface of the wall is vertical and smooth. The wall is retaining two layers of soil, which is horizontal on the surface and applied the uniform load of q=20kPa. The upper layer is the medium sand, with the unit weight y₁ = 18.5kN/m³, the internal friction angle ₁ = 30°, and the layer thickness h = 3m; The lower layer is the coarse sand, with unit weight 72 = 19.0kN/m³, the internal friction angle ₂ = 35°; Calculate the active earth pressure and the total active thrust acting on the wall..

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

the profile of on 2 m from the load. 5-11 A uniform surface load of 220 kPa is applied over the area shown below. Estimate the stress increase in soil due to the surface load at a depth of 15 m below point A. 10 m 20 m IT 10 m A
The total horizontal and vertical stresses at a point X in a saturated sandy medium are 170 kPa and 300 kPa, respectively. The static pore-water pressure is 30 kPa. At failure, the excess pore water pressure is measured to be 94.50 kPa, and the shear stresses on the vertical and horizontal planes passing through the point X is zero. Effective cohesion is 0 kPa and effective angle of internal friction is 36°. The shear strength (kPa, up to two decimal places) at point X is
Dry Sand H, Groundwater Table Clay Refer to the soil profile shown. Given H1 = 8.85 m., and H2 4.01 m If the ground water table rises by 2.19 meters, determine the change in effective stress (numerical value only, in kPa) at the bottom of the clay layer Properties of dry sand Gs = 2.51, e = 0.65 Properties of clay. Gs = 2.72, e = 0.84. Round off to two decimal places. Activate Windows Go to Settings to activate Windows. < Question 18 of 20 2 A Moving to another question will save this response. ASUS C8O CD 80 5n E R- T Y H]
2. The depth of water in a well is 3 m. Below the |IAVA bottom of the well lies a layer of sand 5 meters thick overlying of the clay deposit. The specific clay a gravity respectively 2.64 and 2.70. Their water contents are respectively 25 and 20 percent. Compute the total stress, effective stress and the pore water pressures at pointS solids of sand and are 3m A and B of the figure shown. Sand 5 m A• Ans: 88 kN/m², 29.1 kN/m², 58.9 kN/m² $2 m 12 m Clay
Determine: (a) the capillary height h. of the rise of the moisture into the sand stratum above the water table, and (b) determine the resulting negative porewater pressure u. ine sand d=0.80 mm G-266, e= 055, S-50% WT Zone of capillary rise ke pore pressure satarated clay G-271 *- 4596 +hi
Q-1: For the following soil system determine the effective stress and pore-water pressure at the point “A" when i) water table is at ground surface ii) water table is 1m below the ground surface (consider ya = 16 kN/m³) 1 m Ysat = 18 kN/m 5 m 5 m Ysat= 18 kN/m Yw = 10 kN/m A Y = 10 kN/m³ (i) (ii)
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.
A dense silt layer has the following properties: e =0.406 D10= 10.1 um Capillary constant = 0.209 sq.cm Free ground water level is 8m below the ground surface. 1.) Find the height of capillary rise in the siltin meters. 2) Find the vertical effective stress at 6m depth. Assume ys = 26.51 kn/m3 and the soil above capillary action rise and ground surface is partially saturated at 79%.
The water table in a deposit of uniform sand is located at 2m below the ground level. Assuming the soil above the water table be dry N and the void ratio is 0.75. The effective stress (in k- rounded off to nearest integer) at a depth of 5m below the ground level is N =9.81k-2 Take G = 2.65 and yw W m m 2'
5-4 For the given soil profile and the piezometric surfaces measured at the top of the two sand and gravel layers, determine the pore pressure and effective stress at points A, B, C, D, and E. Piezometers 2 m Ground surface 2 m Sand y = 18 kN/m3 Water table y_ 11m Y = 20 kN/m3 A 4 m Clay Y = 18 kN/m3 加。B 1Im 5 m Sand and gravel y = 22 kN/m3 2 m •D 5 m Clay Y = 19 kN/m3 Sand and gravel y = 23 kN/m3 %3D Cpyright by
A level ground surface exists in an area where soil in the underlying stratum has a wet unit weight of 19 kN/m3. The vertical pressure at any depth represents the major principal stress. The vertical pressure (stress) is the product of the soil unit weight and depth. The lateral pressure at a corresponding depth is 0.45 times the vertical pressure and represents the minor principal stress. (a) Determine the principal stresses acting at a depth 4 m below the surface, and draw the Mohr’s circle for the condition. (b) What is the maximum shear stress acting at this depth?
Effective Stress in Soil Problem 1. The water table in a certain deposit of soil is at a depth of 2m below the ground surface. The soil consists of clay up to depth of 4m from the ground and below which lies sand. The clay soil is saturated even above the water table: Clay strata: ? = 30%,?? = 2.72 Sandy Strata: ? = 26%, ?? = 2.64 1. Compute the total pressure. 2. Compute the pore water pressure. 3. Compute the effective stress pressure at a depth of 8m below the ground surface