Question

soil

3m 1 1 Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil , the ground water table is at depth of 3 m below the surface .the bulk density of soil above the water table is Yo=18.9 kN/m3 and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° GS Yo = 18.9 kN/m3 GWT Ysat. = 20.5 kN/m B) A Q = 32° coarse sand soil consolidated undrained triaxial test was conducted on specimen of saturated clay with cell pressure 03 = 10 kN/m2 , at failure the deviator stress Od = 14 kN/m2 and the failure plane angle 050 · Determine the shear stress and normal stress acting on the failure plane 050 - 4 m

Answer 1

solutim Q. A Given data =320 us 3m rb = 10.9 kN/m3 YNT Ysat = 20.5kn/m3 4'=32 Coage sand soil ym we know that Shear strength. et Intan & c=of for sand - T24 C: xw=9.81 kalma 3x18.9+ 4x20.5 = 138.7 4 4x9.01 -39.24 130.7-39.24 Tn - 99.46 kN/m2 Hence s- of 99.46x tan 320 65.74 kN/m2 Du

B.) Giren alata T = 10kN/m2 14 kN lm ?, 0 - 50° at failure - 3+0d T= 10+14 = 24 kN/m2 so Shear stress, द - ) sin 28. 2 - - (24-10) sinzaro (2= 3.54 kN/m2 Normal stress. 13 Losco I-3 + 2 24-10 + los 2x50 24-10 2 na 2 In = 13.03 kN/m2