Answer / n3

assume 1m depth
wet volume of concrete=9*9*1=81
dry volume=1.54*81=124.74
cement quantity=124.74/13=9.6
no of bag=9.6*1440/50=276.48 nos
sand qty=9.6*4=38.4
agg qty=9.6*8=76.8

Answer / ganesan

Calculate per M3 Concrete
1 m3 of coarse (40mm) agg =0.95m3
1 m3 of Fine aggregate =0.95m3/2 =0.475m3
1 m3 of Binding materials =0.45m3/4 =0.118m3

average thickness no pcc concrete 100mm

SO concrete qty =9*9*0.1 =8.1 m3

jolly =7.695m3
sand =3.84m3
cement=169.92kg
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Answer / bong/mustafa

for the above given question the answer is
9x9x0.40 = 32.4

the given ratio = 1:4:8
1x32=33 bags
4x32=130 bags

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