Working with RF-/STEEL NTC-DF
First, you have to select load cases, load combinations, and result combinations to be designed. It is also necessary to enter material, load and combination data in RFEM/RSTAB in compliance with the design concept specified by the standard NTC-RCDF (2004). The RFEM/RSTAB material library already contains materials relevant for the Mexican and American standard.
In the next input windows, you can adjust preset definitions of lateral intermediate supports, effective lengths, and other standard-specific design parameters. In the case of continuous members, it is possible to define individual support conditions and eccentricities for each intermediate node of single members. A special FEA tool determines critical loads and moments required for the stability analysis.
In connection with RFEM/RSTAB, it is possible to consider the effect of the general calculation according to the second-order analysis by default. Alternatively, you can create the second-order analysis effects by using enlargement factors.