how to calculate 1:2:4 ratio concrete cement, sand, metal
and water please give me brief calculation
Answer Posted / s.rama pandia raj ( asst.manag
i will go with answer of Mr.Adishankar, but i feel a small
suggestion
cement-1
sand-2 with bulking 25% is 2.5
metal- 4
volume of 1m3 of wet concrete is equal 1.54 times of dry
mix
so cement required is 1.54/7=0.22m3 of cement equals 6.34
bags (0.22/0.0347)
sand required is 2.5/7=0.357*1.54=0.55m3 or 0.22*2.5=0.55m3
metal required is 0.22*4=0.88m3
1m3 of 1:2:4 nominal concrete mix contains
cement-6.34 bags
sand - 0.55 m3 with 25% bulking in normal practice
metal - 0.88m3
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