I ran two bemess analysis for the same load cases. In the first one I used the code NSTR CHKR 0.6 in order to obtain a reinfocement which respect the imposed limit (0.6fyk).
With the obtained reinfocement I did the second analysis using the code NSTR CHKR 999 only to verify the reinforcement and I saw that the steel stress doesn’t respect the imposed limit which is strange because the reinforcement was determined in the first analysis in order to respect this limit.
Why the steel stress is higher in the second analysis ?
How can I visualize the correct steel stress ?