Table 1 gives data from a standard shearbox(direct shear) test on a sample of 125g of drysand. The initial dimensions of the sample were 60mmx60mm on plan x20mm in height. Thetest was camried out at a constant normal effective stress of 50kPa. Take the specific gravityof the soil grains Gs=2.65. Plot graphs of(a) shear stress r against shear strain y;(b) volumetric strain evol against shear strain y;(c) specific volume v against shear strain y.(d) Comment on these graphs and estimate the peak and critical state effective angles offriction of the soil.Table 1: Shearbox DataRelative horizontaldisplacement x (mm) of shearbox lid y (mm)Upward vertical movement Shear stress t (kPa)0.000.0000.020.002190.040.008340.060.01643-0.080.026470.200.064560.320.128510.480.192460.640.256410.800.288370.960.320341.120.32133

Given: Direct shear sample=125g effective stress=50kpa Specific gravity=2.65 x is lateral…

Table 1 gives data from a standard shearbox(direct shear) test on a sample of 125g of dry sand. The initial dimensions of the sample were 60mm×60mm on plan ×20mm in height. The test was carried out at a constant normal effective stress of 50kPa. Take the specific gravity of the soil grains Gs=2.65. Plot graphs of (a) shear stress r against shear strain y, (b) volumetric strain evol against shear strain y, (c) specific volume o against shear strain 7. (1) Comment on these graphs and estimate the peak and critical state effective angles of friction of the soil. Table 1: Shearbox Data Relative horizontal Upward vertical movement Shear stress t (kPa) displacement x (mm) of shearbox lid y (mm) 0.00 0.000 0.02 0.002 19 0.04 0.008 34 0.06 0.016 43- 0.08 0.026 47 0.20 0.064 56 0.32 0.128 51 0.48 0.192 46 0.64 0.256 41 0.80 0.288 37 0.96 0.320 34 1.12 0.321 33

Table 1 gives data from a standard shearbox(direct shear) test on a sample of 125g of dry sand. The initial dimensions of the sample were 60mm×60mm on plan ×20mm in height. The test was carried out at a constant normal effective stress of 50kPa. Take the specific gravity of the soil grains Gs=2.65. Plot graphs of (a) shear stress r against shear strain y, (b) volumetric strain evol against shear strain y, (c) specific volume o against shear strain 7. (1) Comment on these graphs and estimate the peak and critical state effective angles of friction of the soil. Table 1: Shearbox Data Relative horizontal Upward vertical movement Shear stress t (kPa) displacement x (mm) of shearbox lid y (mm) 0.00 0.000 0.02 0.002 19 0.04 0.008 34 0.06 0.016 43- 0.08 0.026 47 0.20 0.064 56 0.32 0.128 51 0.48 0.192 46 0.64 0.256 41 0.80 0.288 37 0.96 0.320 34 1.12 0.321 33

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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