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Cohesionless Soil (Analysis for Drained Conditions)

The same methods as for the analysis of an isolated pile are used to calculate the vertical bearing capacity of a pile group:

  • NAVFAC DM 7.2
  • Effective stress
  • CSN 73 1002

The pile group vertical bearing capacity is provided by:

where:

n

-

number of piles in a group

Rc

-

vertical bearing capacity of an isolated pile

ηg

-

pile group efficiency

The actual verification analysis is carried out according to the factors of safety or the theory of limit states.