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GEO5

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Horizontal bearing capacity

The foundation horizontal bearing capacity is verified according to the factor of safety:

where Rdh depends on the subsoil type (selected in the "Settings" frame):

  • Analysis for drained conditions:

  • Analysis for undrained conditions:

and:

Where:

ψ

-

angle of friction between the foundation and the soil

a

-

cohesion between the foundation and the soil

Aef

-

effective area of the foundation

Hx,Hy

-

components of the horizontal force

Q

-

extreme design vertical force

SF

-

safety factor for the horizontal bearing capacity (input in the "Analysis" frame)

The angle of friction between foundation and soil ψ is recommended:

  • For cast in place foundations:

  • For prefabricated foundations:

where:

φ

-

angle of internal friction of soil in footing bottom

Literature:

NF P94-261

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