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Coefficient of Influence of Pile Widened Base BETA

This coefficient denoted as β represents the influence of an expanded pile base, its values are evident from the following figure:

(as a function of ):

Graph to determine the coefficient β

where:

H

-

pile length [m]

Deq

-

equivalent pile diameter at pile base [m]

deq

-

equivalent pile shank diameter [m]

For the NBN EN 1997-1 ABN standard, the coefficient β is interpolated according to the following chart:

where:

Db,eq

-

equivalent pile base diameter [m]

Ds

-

shaft pile diameter [m]

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