**Problem 7: Estimation of Undrained Shear Strength of Clay**A specimen of soil was collected from a depth of 10 m in a deposit of clay. The groundwater table coincides with the ground surface. For the soil, the liquid limit (LL) is 65, the plastic limit (PL) is 33, and the saturated unit weight (\(\gamma_{\text{sat}}\)) is 17.5 kN/m\(^3\). Estimate the undrained shear strength (\(S_u\)) of this clay for the following cases:(a) If the clay is normally consolidated.(b) If the preconsolidation pressure is 210 kN/m\(^2\).(Refer to Skempton’s and Ladd et al.’s relations and Bjerrum’s correction for undrained shear strength.)

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7. A specimen of soil was collected from a depth of 10 m in a deposit of clay. The ground water table coincides with the ground surface. For the soil, LL = 65, PL = 33, and sat = 17.5kN/m³. Estimate the undrained shear strength Su of this clay for the following cases. (a) If the clay is normally consolidated. (b) If the preconsolidation pressure is 210kN/m². (refer to Skempton's and Ladd et al.'s relations and Bjerrum's correction for undrained shear strength)

7. A specimen of soil was collected from a depth of 10 m in a deposit of clay. The ground water table coincides with the ground surface. For the soil, LL = 65, PL = 33, and sat = 17.5kN/m³. Estimate the undrained shear strength Su of this clay for the following cases. (a) If the clay is normally consolidated. (b) If the preconsolidation pressure is 210kN/m². (refer to Skempton's and Ladd et al.'s relations and Bjerrum's correction for undrained shear strength)

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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Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.

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**Problem 7: Estimation of Undrained Shear Strength of Clay**

A specimen of soil was collected from a depth of 10 m in a deposit of clay. The groundwater table coincides with the ground surface. For the soil, the liquid limit (LL) is 65, the plastic limit (PL) is 33, and the saturated unit weight (\(\gamma_{\text{sat}}\)) is 17.5 kN/m\(^3\). Estimate the undrained shear strength (\(S_u\)) of this clay for the following cases:

(a) If the clay is normally consolidated.

(b) If the preconsolidation pressure is 210 kN/m\(^2\).

(Refer to Skempton’s and Ladd et al.’s relations and Bjerrum’s correction for undrained shear strength.)

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