CONCRETE | Design
Before the calculation starts, you should check the input data using the program function. Then, the CONCRETE add‑on module searches the results of relevant load cases, load as well as result combinations. If these cannot be found, RSTAB starts the calculation to determine the required internal forces.
Considering the selected design standard, the required reinforcement areas of the longitudinal and the shear reinforcement as well as the corresponding intermediate results are calculated. If the longitudinal reinforcement determined by the ultimate limit state design is not sufficient for the design of the maximum crack width, it is possible to increase the reinforcement automatically until the defined limit value is reached.
The design of potentially unstable structural components is possible using a nonlinear calculation. According to a respective standard, there are different approaches available.
The fire resistance design is performed according to a simplified calculation method in compliance with EN 1992‑1‑2, 4.2. The module uses the zone method mentioned in Annex B2. Furthermore, you can consider the thermal strains in longitudinal direction and the thermal precamber additionally arising from asymmetrical effects of fire.
Window '1.1 General Data' for Serviceability Limit State with Settings for Nonlinear Calculation According to 
The material model Orthotropic Masonry 2D is an elastoplastic model that additionally allows softening of the material, which can be different in the local x- and y-direction of a surface. The material model is suitable for (unreinforced) masonry walls with in-plane loads.
- How can I view the depth of the concrete compression zone in RF‑/CONCRETE?
- How do you define the descriptions of various reinforcement results,such as the required reinforcement?
- How are the creep and shrinkage for columns considered in RF‑CONCRETE Members?
- How can I display the vertical deformation of a column in state II? I cannot find this setting for the serviceability limit state design.
- Is the preset crack width of, for example, wk = 0.3 mm also designed for primary cracks? According to the manual, the average strain is considered. Does this ensure that the primary crack does not exceed the value wk = 0.3 mm?
- For the design of a ring beam, I usually have Mz moments, which causes the formation of the compression and tension zone on the right and left of the cross-section. However, the reinforcement in CONCRETE is arranged at the top and bottom of the cross-section. How can I set the reinforcement to be arranged on the right and left?
- When calculating deformations in RF‑CONCRETE Members, I get jumps in the deformation diagram. Why?
- Why can I no longer display the intermediate results in RF‑CONCRETE Members?
- Can I use RF‑CONCRETE Surfaces to determine the steel mass for the inserted reinforcement?
- In connection with the analytical SLS calculation, I get implausibly large values for the crack width and deformation in the RF‑CONCRETE add-on modules. What is the cause and how can I fix the problem?