Soil Mechanics and Foundation
Terzaghi’s bearing capacity factors Nc, Nq and Nr are functions of

cohesion only
angle of internal friction only
both cohesion and angle of internal friction
both cohesion and angle of internal friction

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Soil Mechanics and Foundation
Effective stress on soil

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

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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

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

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