Soil Mechanics and Foundation
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

0.2 N/mm² and 0°
0.05 N/mm² and 45°
0.05 N/mm² and 0°
0.5 N/mm² and 30°

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Soil Mechanics and Foundation
In a deposit of normally consolidated clay

effective stress, water content and undrained strength decrease with depth
effective stress and water content increase with depth but undrained strength decreases with depth
effective stress increases with depth but water content of soil and un-drained strength decrease with depth
effective stress and undrained strength increase with depth but water content decreases with depth

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Soil Mechanics and Foundation
Which of the following statements is correct?

For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
Uniformity coefficient represents the shape of the particle size distribution curve.
A soil is said to be well graded if it has most of the particles of about the same size
None of these

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Soil Mechanics and Foundation
Effective stress on soil

Increases voids ratio and decreases permeability
Decreases both voids ratio and permeability
Increases both voids ratio and permeability
Decreases voids ratio and increases permeability

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