What is the ratio of Grades M10,M15,M20,M25,M30,M35,M40. ALLInterview.com. Categories ... No where code IS is specified mix ratios for grade of concrete. But IS 456-2000 table no 9 is given guideline for ... column,raft,wall how can calculate give me formula 2 Answers Amrapali, I want to know about rolling margin of steel :- For eg. ...