Hello, The pursantage values in the parameters are arranged according to the material type BS20, S420 by default in the program. As the designer, you are responsible for the purchase values written in the column, beam, curtain, etc. element parameters; according to material type, for example ro=0.8 fctd/fyd etc. specified in TDY. Account-linked pursantage values are automatically taken into account. The minimum percentage values to be entered for static elements are given in tables according to the elements in many reinforced concrete books. Good work...