What is the ratio of Grades M10,M15,M20,M25,M30,M35,M40.
Answer Posted / manoj yadav
M10 =1:3:6 for p.c.c.
M15 =1:2:4 for d.p.c.
M20 - M40 1:1.5:3 colloum,slab,beam
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