I need the answer quickly Q2) Triaxial un drained tests were performed on clay samples taken from stratum shownbelow, the results were C=20 kN/m2 ,and =24. Find the both of shear strength andshear stress acting on the inclined plane of 0 = 57°.4m WT13mYa = 18 KN/mSsand gravelG-2.6, e-0.433.5 m arcalye-20kN/m.= 24Yea17 KN/ m7m

Given:- The triaxial undrained tests were performed on clay samples The results of the tests are:-…

Answered: Q2) Triaxial un drained tests were…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter12: Shear Strength Of Soil

Section: Chapter Questions

Problem 12.20P

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Soil Mechanics An embankment consists of clay fill for which c′ = 25 kN/m2 and φ = 27° (from consolidated undrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m3. Estimate the shear-strength in kPa of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m2 as shown by a piezometer. a. 133 b. 100 c. 166 d. 200
For a given consolidated clay: Gs= 2.71; LL= 45; In situ average effective overburden pressure = 120 kPa; In situ void ratio= 0.80 ; Thickness of clay layer = 4m ; average increase of effective stress on clay layer= 40 kPa; Effective pressure at the mid-height of clay layer= 60 kPa; Swell Index (Cs)= 1/5 Cc. Compute the pre-consolidation pressure in kPa. a. 92.9 b. 49 c. 87.64 d. 100.5
Assume that the void ratio variation with respect to pressure relationship shown in Figure 4(a)is representative of the clay shown in Figure 4(b ). Determine the settlement in the clay layerunder the centre of footing. Assume, specific gravity G = 2. 7.
A soil profile, under surcharge load of 25 kN/m2 at ground level, consists of 6m sand and 3m clay layer. Ground water table is 2m below sand layer. Dry unit weight and saturated unit weight of sand is 15.80kN/m3 and 16.90kN/m3 respectively. Clay layer, Gs=2.67 and saturated unit weight is 18.80 kN/m3. Determine a)Increase in stress at the mid layer of clay b) With dewatering 2m, what is the stress increase at the mid layer of clay c) How much must the water level be lowered to me more effective than the surcharged load?
For a normally consolidated insensitive clay angle of friction_CD = 30°. Deviator stress at failure of the same soil is 250 kN/m2 in CU test. If Skempton’s A-parameter at failure is 0.62, find out angle of friction_CU for this soil. a. 10 b. 12 c. 14 d. 18
A consolidated drained tri-axial test was conducted on normally consolidated clay. The results were: the confining pressure is 300 kPa and the deviators stress is 300 kPa. Compute the angle that the failure plane makes with the major principal axis in degrees. show fbd a.16.3 b.24.72 c.54.74 d.19.47
For a given consolidated clay: Gs= 2.71; LL= 45; In situ average effective overburden pressure = 120 kPa; In situ void ratio= 0.80 ; Thickness of clay layer = 4m ; average increase of effective stress on clay layer= 40 kPa; Effective pressure at the mid-height of clay layer= 60 kPa; Swell Index (Cs)= 1/5 Cc. Compute the primary consolidation settlement in mm. a.87.64 b.49 c.92.9 d.100.5
A consolidated drained tri-axial test was conducted on normally consolidated clay. The results were: the confining pressure is 300 kPa and the deviators stress is 300 kPa. Compute the angle that the failure plane makes with the major principal axis in degrees. show free body diagram. a.54.74 b.16.3 c.24.72 d.19.47
An embankment consists of clay fill for which c′ = 25 kN/m2 and φ = 27° (from consolidated undrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m3. Estimate the shear-strength in kPa of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m2 as shown by a piezometer.
Solve it quick? Triaxial test (CU) is performed on a clay for a confining pressure of 110 kPa. If the deviator stress and pore-water pressure were 70 kpa and 55 kpa respectively then determine the internal friction angle.
Water flows at a rate of 0.09 m3/s upward through a sand sample with a coefficient of permeability of 27 cm/s. The thickness of the soil is 0.24 m and the area is 0.54 sq. m. Saturated unit weight is 18.9 kN/m3. a) Determine the hydraulic gradient (Ans. 0.617) b) Compute the effective stress at the middle of the sample (Ans. 354 N/m2) c) Compute the effective stress at the bottom of the sample. (Ans. 728 N/m2)
For a given consolidated clay: Gs= 2.71; LL= 45; In situ average effective overburden pressure = 120 kPa; In situ void ratio= 0.80 ; Thickness of clay layer = 4m ; average increase of effective stress on clay layer= 40 kPa; Effective pressure at the mid-height of clay layer= 60 kPa; Swell Index (Cs)= 1/5 Cc. Compute the compression index. a.0.534 b.0.513 c.0.315 d.0.145 With Free Body Diagram

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