Why do I receive such high contact stresses at the foundation edges of my floor slab?


Depending on how rigid a foundation body is, the distribution of overloading pressure under this structural component changes as well. In case of non-prestressed foundation bodies that are loaded by a uniform surface load, it is generally assumed that the overloading pressure distribution is a mirror image of the load. The plate forms a subsidence basin. However, the more rigid the plate becomes, the more the contact stress rises towards the edge (theoretically limitless).


Distribution of overloading pressure Overloading pressure Contact stress Plate edge


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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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