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

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

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Soil Mechanics and Foundation
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

Vertical if the soil is in a passive state of plastic equilibrium
None of these
Vertical if the soil is in an active state of plastic equilibrium
Inclined at 45° to the vertical plane

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