Calculate cement sand aggregate for concrete Nominal Volume of concrete 17 x 17 x 05 14 cum It looks like you are using m20 grade mix with extra sand If you follow that mix proportion then to calculate use this following method Total ratio 1 2 3 6 Cement required 16 x 15 025 cum refer the post to change cum to bags Sand 025 x 2 05 cum Aggregate 025 x 3…