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Soil Mechanics Test 7
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  • Question 1/4
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    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 KH = 760 kg/m2/m and KV = 100 kg/m2/m, the total active earth pressure will approximately be
  • Question 2/4
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    Match List I (Method of finite slope analysis) with List II (basis of these methods) and select the correct code from the list given:

     

    List I

     

    List II

    A.

    Swedish circle method

    (i)

    Total stress Analysis

    B.

    Taylor’s Method

    (ii)

    Effective stress Analysis

    C.

    Friction-circle Method

    (iii)

    Coulomb Analysis

  • Question 3/4
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    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
  • Question 4/4
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    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)
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