Highway Engineering
The most suitable equipment for compacting clayey soils is a

smooth wheeled roller
vibrator
pneumatic tyred roller
sheep foot roller

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Highway Engineering
The direct interchange ramp involves

diverging to the left side and merging from right
diverging to the right side and merging from left
diverging to the right side and merging from right
diverging to the left side and merging from left

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Highway Engineering
In soils having same values of plasticity index, if liquid limit is increased, then

Compressibility, permeability and dry strength increase
Compressibility and permeability decrease and dry strength increases
Compressibility and permeability increase and dry strength decreases
Compressibility, permeability and dry strength decrease

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