Acier de béton armé
For the serviceability limit state design, the program calculates with the mean strengths of the materials. The mean reinforcing steel strengths were published by the JCSS in the Probabilistic Model Code. The code specifies the mean value of the reinforcing steel's yield strength with fym = 1.1 ⋅ fyk.
RF-CONCRETE NL uses a bilinear distribution for the stress-strain relation of the reinforcing steel.
The user can choose whether the plastic branch of the graph is horizontal or increases up to ftm. The settings are specified in the Settings for Nonlinear Calculation dialog box (see Figure 3.12). To open this dialog box, click the button shown on the left that is available in the Serviceability Limit State tab of window 1.1 General Data.