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Piles 

GEO5

Geotechnical software

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Pile shaft resistance

Pile shaft resistance for non-cohesive soils is given by:

where: Kj - coefficient of lateral earth pressure in the j-th layer
σef, j - effective strength of soil in the j-th layer
δj - pile skin friction angle (between pile material and surrounding soil in the j-th layer)
Asj - area of pile shaft in the j-th layer

The lateral earth pressure coefficient K is back calculated by the program; however, its values can be manually modified in the "Add new soils" dialog window.

For cohesive soils the following expression holds:

where: α j - skin friction coefficient in the j-th layer
cu, j - undrained cohesion in th j-th layer
Asj - area of pile shaft in the j-th layer



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