An embankment is to be constructed with a granular soil (bulk unit weight = 20 kN/m³) on a saturated clayey silt deposit (undrained shear strength = 25 kPa). Assuming undrained general shear failure and bearing capacity factor of 5.7. The maximum height (in m) of the embankment at the point of failure is (a) 7.1 (b) 5.0 (c) 4.5 (d) 2.5

An embankment is to be constructed with a granular soil (bulk unit weight = 20 kN/m³) on a saturated clayey silt deposit (undrained shear strength = 25 kPa). Assuming undrained general shear failure and bearing capacity factor of 5.7. The maximum height (in m) of the embankment at the point of failure is (a) 7.1 (b) 5.0 (c) 4.5 (d) 2.5

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter3: Weight–volume Relationships

Section: Chapter Questions

Problem 3.24P

See similar textbooks

Similar questions

With B,lz and Blz is showr CE 12 s Name: ID: Problem No. 1 For the embankment shown in Figure below, determine the vertical stress increases at points 4, B, and C. 5m 5 m 10 m Unit weight y 17Na 5 m
6. An embankment is shown in Figure below. Given that B=7m, H = 6m, m= 2, z = 3m and y= 18kN/m³ (a) Determine the vertical stresses at A after completion of embankment. (b) What is the vertical stress at A if the embankment was built halfway. B H 1 Z=3 m
Solution for this please,Final answer: a. B = 13.766 mb. qt = -438.87 kPa; qh = 0 kPa A gravity dam of trapezoidal cross section with one face vertical and horizontal base is 22m high and has a thickness of 4m at the top. Water upstream stands 2m below the crest of the dam. The specific gravity of masonry is 2.4. A. Considering uplift pressure to vary uniformly from full hydrostatic pressure at the heel to zero at the toe: 1.Find the base width B of the dam so that the resultant force will act the extremity of the middle third near the toe.2.Compute the maximum and minimum compressive stresses acting against the base of the dam.
A long embankment 30 m wide is to be built on ground. The net vertical pressure applied by the embankment (assumed to be uniformly distributed) is 90kpa. The soil profile and stress distribution beneath the center of the embankment is also shown. The value of mv for the upper clay is 0.35m2/MN, and for the lower clay mv=0.13m2/MN. Tthe permeabilities of the cllays are 10-10m/s and 10-11m/s for the upper and lower soil respectively. Determine the final settlement under the center of the embankment due to consolidation
varies uniformly from full Hyu between dam and foundation soil is 0.40. Which of the following most nearly gives the factor of safety against slidling? 12 m A. 1.22 1 m 5m A. 2.56 4m 9m A. 154.52 kPa 4m 2 m 8m 3m B. 1.56 7.) A concrete dam retaining water is shown in the figure. The specific weight of concrete is 24 kN/m3. Assume hydrostatic uplift varies uniformly from full hydrostatic pressure at the heel of the dam to zero at the toe and that the coefficient of friction between dam and foundation soil is 0.40. Determine the factor of safety against overturning. C. 2.31 B. 315.61 kPa C. 2.12 B. 1.89 8.) A concrete dam retaining water is shown in the figure. The specific weight of concrete is 24 kN/m3. Assume hydrostatic uplift varies uniformly from full hydrostatic pressure at the heel of the dam to zero at the toe and that the coefficient of friction between dam and foundation soil is 0.40. Determine the maximum pressure on the foundation. D. 1.89 C. 281.63 kPa D. 3.14 D. 241.89 kPa
A 3 m high embankment is to be constructed as shown in the figure. If the unit weight of soil used in the embankment is 19 kN/m, calculate the vertical stress due to the embankment loading at points P1, P2, and P3. 10.5 7.5 6 4.5 CE +4.5 3.0 |y= 19 kN/m B 3.0 -3.0 1 P3 -3.0- Note: All dimensions are in metres
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
An embankment for a highway 30 m wide and 1.3 m in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content, w, of the sandy soil in the borrow pit is 17% and its void ratio, e, is 0.75. The specification requires the embankment be compacted to a dry unit weight of 19 kN/m^3. Determine, for 3 km length of embankment. Assume Gs = 2.7 a) Compute the volume (m³) of borrow material required b) solve the cost of fill if the earth fill from borrow site costs Pho 150/m³ c) calculate the volume (m³) of borrow material required is the specification required a void ratio of 0.20
2) In an embankment dam construction project, dam body consists of an inner clay part and outer rockflI. Which test do you prefer for the following situations, respectively: I. Before collecting water in reservoir, evaluate the short term slope stability analysis of the clay core. II. One year after collecting water in reservoir, you need to drop the water level due to an earthquake. Evaluate the slope stability of the clay core O a. Direct Shear Test-Falling Head Test O b. Direct Shear Test- Consolidated Undrained Test O . Unconsolidated Undrained Test-Consolidated Drained Tes O d. Vane Shear Test-Direct Shear Test O e. Consolidated Drained Test -Consolidated Undrained Test
A 3 m high embankment is to be constructed as shown in the figure. If the unit weight of soil used in the embankment is 19 kN/m², calculate the vertical stress due to the embankment loading at points P1, P2, and P3. 10.5 7.5 6 4.5 CE 4.5 3.0 | y= 19 kN/m B 3.0 -3.0 -3.0 P3 Note: All dimensions are in metres P,
11. An embankment for a highway 30 m wide and 1.5 m thick is to be constructed from sandy soil, trucked in from a borrow pit. The water content of the sandy soil i the borrow pit is 15% and its void ratio is 0.69. Specifications require the embankment to compact to dry weight of 18 kN/m³. The length of the embankment is 1 km. a. What is the dry unit weight (in kN/m³) of sandy soil from the borrow pit to construct the embankment? Assume that Gs=2.7. b. What is the number of 10 m³ of truckloads of sandy soil required to construct the embankment? c. What is the weight (in kN) of water per truck load of sandy soil?
Solve with complete solutions and explain. An embankment for a highway 30 m wide and 1.5 m in compacted thickness is to be constructed from a sandy soil trucked from a borrow pit. The water content of the sandy soil in the borrow pit is 15% and its void ratio is 0.69. The swell index is 1.2. The specification requires the em-bankment to be compacted to a dry unit weight of 18 kN/m3. Determine, for a 1 km stretch of embankment, the weight of sandy soil from the borrow pit required to construct the embankment, the number of truckloads of sandy soil required for the construction. The full capacity of each truck is 22.2 m3 and local government policies require a maximum loaded capacity of 90%, the weight of water per truckload of sandy soil and the degree of satu-ration of the sandy soil in situ.