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

10°
7°
17°
12°

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Soil Mechanics and Foundation
With the increase in the amount of compaction energy

both optimum water content and maximum dry density increase
optimum water content increases but maximum dry density decreases
both optimum water content and maximum dry density decrease[ES 93]
optimum water content decreases but maximum dry density increases

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Soil Mechanics and Foundation
In a deposit of normally consolidated clay

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

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