Building Construction
In case of Raymond pile

Diameter of top of piles varies from 40 cm to 60 cm
All listed here
Diameter of pile at bottom varies from 20 cm to 28 cm
Lengths vary from 6 m to 12 m

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Building Construction
Negative skin friction

Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile
Both (A) and (B)
Develops due to lowering of ground water
Neither (A) not (B)

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