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Pile Base Resistance

The bearing capacity of the pile base in cohesionless soils is based on the formula:

where:

σef,b

-

effective stress at the pile base

Nq

-

bearing capacity factor

αt

-

dimensionless coefficient dependent on pile length and diameter

qb

-

pile base resistance

qb,lim

-

limit resistance at the pile base

Ab

-

area of the pile base

The maximum vertical effective stress at the base of the pile σef,b is limited to 3.2 ksf (approx. 153 kPa).

Bearing capacity factor Nq , coefficient αt ,and limit resistance at the pile base qb,lim are calculated by the program automatically, but it is also possible to input them manually.

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