How can I specify different subgrade moduli for a large floor slab?


The definition of surface supports (foundation) in RFEM is a property of the surface.

Figure 01 - Dialog Box "Edit Surface" with Definition of Support

This means that you have to divide the entire floor slab - depending on the areas with different subgrade moduli - into several surface components.


Foundation Surface support Subgrade module Support Support Foundation overlap Soil model Elastic surface foundation



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RFEM Main Program
RFEM 5.xx

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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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Add-on Module

Soil-structure interaction analysis and determination of elastic foundation coefficients based on soil data

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