GATE CE 2021: Soil Mechanics & Foundation Engineering#10 (App update required to attempt this test)

For stability of a concrete cantilever retaining wall against sliding , the ratio of sliding force to resisting force is

Determine the Coulomb active force (in kN) on the retaining wall shown in the figure, if the friction angle between wall and soil is equal to friction angle of soil.

An 8m high retaining wall retains dry sand. Initially the soil is in loose state with void ratio of 0.67, = 17 kN/m³ and φ= 30°. Subsequently, the soil is compacted and now its new void ratio is 0.38, = 18 kN/m³ and φ= 35°. According to Rankine’s earth pressure theory, the ratio of initial passive thrust to final passive thrust is _____.

A rigid smooth retaining wall of height 7 m with vertical backface retains saturated clay as backfill. The saturated unit weight and undrained cohesion of the backfill are and 20 kPa, respectively. The difference in the active lateral forces on the wall (in kN per meter length of wall, up to decimal places), before and after the occurrence of tension cracks is _________

There is a 15m high retaining wall with smooth vertical back and it retains cohesion less sand. The unit weight of sand is 20 KN/m³ and f = 28°. Determine the total earth pressure at rest. Use Jacky’s formula to calculate earth pressure coefficient.