My structure keeps on getting EXTREME SOFT STOREY even if i already reduced the storey heights and increased the beam and column sections. Please help me. Thank you.
Please attach the model for the investigation.
To know how the story stiffness calculated please refer below wiki.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/28477/computation-of-story-stiffness
Also I would recommend using the latest version 22.08.00.175 to check the issue as suggested earlier.
I think you are using IS: 1893(Part-1)-2002 code. Can you please change the code to IS:1893(Part-1)-2016?