Civil Engineering :: Soil Mechanics and Foundation Engineering
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If β is the surcharge angle of a backfill with an angle of internal friction φ, the coefficient of active earth pressure given by Rankine's theory, i
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A structure is erected on an impervious clay whose thickness is 12 m. Drainage is possible both at upper and lower surfaces. Coefficient of consolidation is 0.015 cm2 per minute. For attaining 50% consolidation with a time factor 0.20, the number of days required
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Which one of the following statements is true for Mohr-Coulomb envelope ?
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The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3, is
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On wetting, cohesive soils,
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Pick up the correct statement from the following:
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A triaxial shear test is prefered to direct shear test, because
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Pick up the correct statement from the following:
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. Chemical weathering of soil is caused due to
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A.
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B.
The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear |
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C.
Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction |
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D.
For an ideal pure friction material, the straight line passes through the origin |
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E.
All the above. |
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A.
The range of water content between the liquid limit and plastic limit, is called plasticity index. |
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B.
The ratio of the liquid limit minus the natural water content to the plasticity index of soils, is called consistency index |
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C.
The ratio of natural water content minus its plastic limit to its plasticity index is called liquidity index |
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D.
The ratio between plasticity index and flow index (i.e. slope of flow curve in case of liquid limit), is called toughness index |
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E.
All the above. |