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.
Do you often spend too long calculating cross-sections? Dlubal Software and the RSECTION stand-alone program facilitate your work by determining section properties of various cross-sections and performing a subsequent stress analysis.
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Channels, hats, angles, and Z sections from AISI D100-17 standard can be designed according to AISI S100 in the Steel Design Add-on.
Additionally, all rectangular and round HSS AISC shapes can also be designed per AISI S100. This option is set under the Strength Configuration for Steel Design.
A custom section can be created using one of the “Thin-Walled” sections available in the library. For other sections that do not meet any of the 14 available cold-formed shapes, the sections can be created and imported from the stand-alone program RSECTION.
Parametric (custom) sections with the manufacturing type “Cold formed” can be designed according to AISI S100 or CSA S136.
The safety factor Ω and resistance factor Φ used in Chapters E through H are only appropriate for sections that comply with the limitations in Table B4.1‑1. For all other sections that exceed any of the limits, higher safety factors Ω or lower resistance factors Φ are applied according to section A1.2(C). In RFEM, this limitation is checked by default. The user has the option to deactivate this check in the "Strength Configuration".
Shapes that can be checked in RFEM include C, Z, L, I (double back-to-back C), hat, rectangular, and round HSS. In the example shown in Image 02, the 8ZS2.75 x 105 section meets the applicability limits.
For general/complex sections, such as the sigma section used in Example III‑14 of AISI D100‑17 (shown in Image 03), the more conservative factors are automatically applied. As a result, Φc = 0.80 is used in the RFEM design checks. However, the manual calculation shows that the sigma section actually meets the applicability limits and Φc = 0.85 can be used instead.