In RFEM 5 and RSTAB 8, it is possible to consider the flexibility of the connection in the individual layers for composed timber sections. This is achieved by entering the reduction factor gamma determined using the "gamma method", for example, according to EN 1995‑1‑1 (Annex B) or DIN 1052:2008 (8.6.2). This factor takes into account a reduction of the parallel axis theorem components of the cross‑section parts from which an effective bending stiffness results.
In addition, it is possible to assign different materials to the individual cross‑section. To do this, select the option "Hybrid", then select one of these materials as reference material to determine the ideal cross‑section properties.