9*8m slab 1:2:4 ratio use for M20 mix how much cent is
require it will become in cum but i want bags.
Answer Posted / johnmiya shaik
M.20 mix(1:2:4)
1 2 4=6
1.52/6=0.253333
(Cement wet density to dry density ratio)
(One cement bag=0.035cum/1.225 cft)
0.253333/0.035=7.238095
Slab area=72sqm
Assume thickness=100mm
So concrete qty=9x8x.1=7.2cum
Cement bags=7.2 cumx7.238095=52.11 bags/2605.714kg
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