Q-An infinite slope is to be constructed in a soil. The effective stress strength parameters of the soil are c' = 0 and ' = 30°. The saturated unit weight of the slope is 20kN/m³ and the unit weight of water is 10kN m³. Assuming that seepage is occurring parallel to the slope, find the maximum slope angle for a factor of safety of 1.5

Soil mechanics solution need

20. A 17-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of 0.53 and specific gravity of 2.65. Above the water table, the soil has a degree of saturation equal to 40.67%. Direct shear test conducted on the soil shows that the an angle of internal friction of 26.04° and cohesion of 17.17 kPa. What is the potential shear strength (in kPa) on a horizontal plane at a depth of 9 m. below the ground surface? Round off to two decimal places.

A sandy soil with k = 3×10² cm/s contains a series of 5 mm thick horizontal silt layers spaced 300 mm on center. The silt layers have k= 5×10° cm/s. Compute k, and k̟ and the ratio k,/k. %3D