Exercise 3 Hydraulic conductivity & stress.ReferanserMasseutsendelserSe gjennomVisningHjelp*A Aav AAaBbCcI AaBbCcl AaBbC AaBbCcl AadB AABBCCDA . Dv AT NormalTIngen m. Overskrift 1 Overskrift 2TittelUndertittelAvsnittStilerB. Stress and stress path(chapter 8, book By Muni)Basic concepts: stress & strain1. A cylindrical sample of soil 50 mm in diameter × 100 mm long wassubjected to axial and radial effective stresses. When the verticaldisplacement was 2 mm, the soil failed. The stresses at critical stateare ('P2)1 cs = 280 kPa and (o'3)cs =100 kPa. The change in soilvolume at failure was 800 mm3. Determine:(a)the axial strain at failure,the volumetric strain at failure,(b)(c) the radial strain at failure,(See example 8.1)InternakNormalTilajengelighet UndersokA 囉#

Given data: Diameter = 50 mm Height = 100 mm vertical displacement= 2 mm σ1'=280 kPaσ3'=100 kPa…

Answered: 1. A cylindrical sample of soil 50 mm…

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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A CU triaxial test was carried out on a silty clay that was isotopically consolidated using a cell pressure of 125 kPa. The following data were obtained: Axial load (kPa) 0 5.5 11.0 24.5 28.5 35.0 50.5 85.0 105.0 120.8 Axial strain, E₁ (%) 0 0.05 0.12 0.29 0.38 0.56 1.08 2.43 4.02 9.15 Au (kPa) 0 4.0 8.6 19.1 29.3 34.8 41.0 49.7 55.8 59.0 (a) Plot the deviatoric stress vs. axial strain and excess porewater pressure vs. axial strain, respectively. (b) Determine the undrained shear strength (su). (Note: we assume that the sample reaches failure). (c) Determine the total principal stresses (0₁,03) and the effective principal stresses (0₁, 03') at the failure, respectively.
8. A soil particle is subjected to a maximum stress of 14.6 kPa and a minimum stress of -4.18 kPa. Determine the normal and the shear stresses on the plane of 0 = 50⁰ with respect to the major principal stresses and also determine the shear strength of soil particle. Answer: 3.6 kPa, 9.2 kPa, and 9.4 kPa.
Ex (21) The shear strength equation of a compacted soil can be expressed as (S=T= 9.6+5 tan 30). The results of CU triaxial test with pore water pressure measurements on the same soil at failure are as follows:- Deviator Stress at failure с 1 234 2 350 545 a) Find the shear strength parameters in terms of total stress. b) In CU triaxial test, find the pore water pressure at failure when the cell pressure is (200) kPa (having Deu 21° and Co 54 kPa). c) In CD triaxial test carried out on the same samples of the samme soil, the cell pressure at failure is (200) kPa. Find the deviator stress at failure. Test No. Cell Pressure (кра) 70
Below are results from three unconsolidated undrained triaxial tests performed on a fully saturated clay specimen: Test No. 1 2 Minor principal stress (psi) Major principal stress at failure (psi) 10 25 33 22 37 45 Moisture content = 21 % Determine: a) Void ratio (e) of the soil. You may use eS = wG_ (assume Gs = 2.70) %3D b) Deviatory stress at failure for each test trial c) Shear strength parameters (cu and ø). Hint: Sketch the Mohr's circles for the three trials. 3.
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A triaxial compression test was conducted on a saturated soil sample to determine its shear strength parameters: effective cohesion (C') and effective friction angle (O'). The confining pressure used during the test was 30 psi. The deviator stress on the sample at the time of failure was 40 psi. The porewater pressure measured at the time of failure was 5 psi a) The figure below shows the stress conditions on the sample at the time of failure. Provide the values of total stresses, o1 and oz on the sample. Total horizontal stress, o3 (psi) = (Report to the nearest whole number, i.e. no decimals) Total vertical stress, o1 (psi) (Report to the nearest whole number, i.e. no decimals) %3D b) The figure below shows the effective stress Mohr's Circle for the above soil sample at failure. What are the values of effective normal stresses at points A and B?
The results shown in the following table were obtained at the peak in a series of CU tests with constant cell pressure (isotropic) for a given soil. Cell Pressure (σc, kPa) Axial Stress at Failure (σd, kPa) Pore Pressure (Δu, kPa) 100 260 30 200 450 60 a) draw the effective stress path using p-q diagram of each test. b) draw s-t stress paths (effective) and determine the shear strength parametres (Φ', c') using Kf - line.
Please be clear in explaining..
Two undrained triaxial tests were conducted on soil specimen, and they gave the following results: Sample Confining Pressure Deviator Stress A 350 kN/m² B 500 kN/m² 150 kN/m² 300 kN/m² The shear strength of sample A in the plane of it's normal stress is A 588 kPa B 283 kPa C 730 kPa D 165 kPa Correct Option
a) A CU triaxial test was carried out on a silty sand soil sample. The cell pressure was equal to 200 kPa. At failure the deviator stress was equal to 410 kPa and the pore pressure was equal to 73 kPa. i) Assuming that the cohesion intercept is equal to 0, calculate the friction angle of the soil. ii) If the friction angle was equal to 35°, calculate the cohesion intercept of the soil. iii) Calculate the angle of the failure plane relative to the horizontal plane for the soil shear strength parameters in Question 4 a i and 4 a ii.
Soil sample size is (21cm×21cm)

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