As per IS 456-2000, formula for calculation modular ratio is -
1
\(\frac{{280}}{{3{\sigma _{cbc}}}}\)
2
\(\frac{{2800}}{{3{\sigma _{cbc}}}}\)
3
\({\frac{{3{\sigma _{cbc}}}}{{280}}}\)
4
\(\frac{{280}}{{{\sigma _{cbc}}}}\)
As per IS 456-2000, formula for calculation modular ratio is -