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FIN EC software

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Calculation of C1 and C2

The subsoil constants C1 and C2 may be calculated with the help of following inputs:

Deformability modulus

  • The modulus of deformation. It's a subsoil parameter, that can be obtained from tests.

Poisson's ratio

  • The dimensionless value from interval (0;0.5). Subsoil parameter.

Acting width

  • The width of structure, that is in contact with the subsoil. This value is usually equal to the cross-sectional width, however, may be different for structures with additional parts between the member and subsoil.

Ratio H/b

  • The ratio between the depth of deformation zone and the acting width. The deformation zone is the layer of subsoil, which is affected by the deformation caused by the member. The value is usually between 1.5 and 5.0.

The calculation of Winkler-Pasternak constants is described in the chapter "Subsoil model".

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