Answer / h. k .prusty

As per IS-456/2000 Minimum Gr. for RCC is M-20, And it
varies upto M-50.

Answer / modipraveen

M10, M15, M20, M25, M30, M35, M40, M45, M50, M55, M60, M65
etc., its depend on load, span, depth of member

Answer / narendra kumar

M5 TO M65 etc.

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