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Is it possible to perform an analysis according to the stiffness modulus method in RSTAB or RFEM?


Instead, a variation of the subgrade reaction modulus method is used. The relation to the stiffness modulus ES is not possible.

In RFEM, a multi-parameter foundation model has been implemented. This can be used to carry out very realistic settlement calculation.

The problem, however, is to find precise values for the parameters Cu,z, Cv,xz, and Cv,yz. For this, the RF-SOILIN add-on module is helpful: the subgrade parameters are calculated from the loads and the data of the geotechnical report (stiffness modulus or modulus of elasticity and poisson's ratio, specific weights, layer thicknesses) for each individual finite element by using a nonlinear method. These parameters are load-dependent and influence the behaviour of the structure. The results of this iterative process are realistic settlements and internal forces in the structure.


stiffness modulus method subgrade reaction modulus method foundation model foundation surface elastic foundation soil



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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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