Question

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 Xb=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 320 1 GS 3m 1 4 m Yo = 18.9 kN/m2 GWT Ysat. = 20.5 kN/m2 B) A o = 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 - Soil mechanics

Soil mechanics

Answer 1

Q & A as 18.9434 703 X4 9.81Xy N'- Ybx3 + Poat x4 – Ywxy ENT 3m1 Y6 18.9 kn/m² ✓ Yout= 20.5 kn/m3 4m conroe sand $+370 А 2 effective strept at 7m - A 99.46kn).m Shear strength S=Ctolland!

S= 0 + 99.469n32º 5 = 62.15 kn/m24 Ans. (B) 83= 10 kn/m² od = 14 kn/m² failure plane Ogo og = q tanº (1579) (14+10) tan 2050 lo TO २५ tanceso ton Oso = Il y 5o = tant ela 0 050°= 32.842 failure plane is 32.8420 from mayor principal plane

Normal steps at failure plane O= 37.842° 3 = 10 kn/m² 9 - 24 anos ith t good conne २ 10734 + 24-10 cop (2x32.84) on 19,893 kn/m2 shear skepp at failure plane 10 = (0, -63) sinzo 0=4059) sim 20 = QU-10 simpx32.84) zwa/0488:9=> = 6.38 kn / m2 m. po=19.89knlm2 bermayer plene ma