The structural analysis software RFEM 6 is the basis of a modular software system. The main program RFEM 6 is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as to model solid and contact elements.
RSTAB 9 is a powerful analysis and design software for 3D beam, frame, or truss structure calculations, reflecting the current state of the art and helping structural engineers meet requirements in modern civil engineering.
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You can set the deformation coefficient kdef under the General Data of the model. There, you can specify the deformation coefficient manually or select it on the basis of the service class.
The program considers the deformation coefficient kdef in the load combinations for serviceability (similar to DIN EN 1995‑1‑1, 2.2.3).
For the design of combined structures made of timber materials, see FAQ 4325.
Since the components due to creeping are directly considered for the serviceability limit state design by the load combinations, it is also necessary to define the service class and thus the deformation coefficient in RFEM or RSTAB, regardless of the design module. This can be done in General Data (see Image 01), but you can also access the corresponding settings directly from the combination expressions (see Image 02).