how to calculate 1:2:4 ratio concrete cement, sand, metal
and water please give me brief calculation

Answer Posted / satish kumar lade

Constant of Dry volume /m3 = 1.5
1:2:4 = 1+2+4=7
1.5/7=0.214
1 cum = 1440 kg cement
1440 x 0214 = 308.57 kg

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