In cohesionless soil, the settlement of group of piles is usually small and they occur fairly rapidly. z-?WU
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In cohensive soil, the long-term settlement of group of pile in clay is calculated using the method employed in estimating settlement of shallow foundations(the soil inside of pile group area stick to the pile and work with pile, something like H-pile side resistance calculation case). ZA'Qw2fF0
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This group settlement is the displacement related to the under layer soil below the "shallow foundation". U$ 22 r b
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In the bearing capacity, the side resistance is due to the displacement between pile and the soil around pile. X"O^4MnvI
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Do not confuse these two displacements.