Soil Mechanics ...

A 6 m high retaining wall with a vertical back has a backfill of silty sand with a slope of 10° for the backfill. With values of K_H = 760 kg/m²/m and K_V = 100 kg/m²/m, the total active earth pressure will approximately be

Match List I (Method of finite slope analysis) with List II (basis of these methods) and select the correct code from the list given:

A retaining wall (acted upon by active thrust) 20 m high having smooth vertical back retains a soil having c’ = 25 kN/m² and ϕ’ = 20. To increase the critical depth of unsupported cut by 10%, the ϕ’ required will be _____ (degrees).Take γ of soil = 18 kN/m³

An infinite slope at an angle at 20° with the horizontal is made in a purely cohesive soil having cohesion of 30 kN/m² and a unit weight of 16 kN/m³. If only 75% of the cohesion is mobilised, the maximum height of slope that can be stable is (in m up to 2 decimal places)