Soil Mechanics and Foundation
A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of

17°
10°
12°
7°

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

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

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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

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

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