how to calculate concrete qty for footing using M25 grade
1:1:2 for 731 cft.
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Answer Posted / er. tiwari karan
M25:: 1:1:2 Total parts is 4 Cement part is 1/4
Dry Volume of M25 is approx 1.57 times of total volume
Density of Cement is 1440
Cement Required for 1 cum =1/4X1.57X1440=565.2 approx cu. mtr.
for Bags (india cement bags) is of 50kg so 565.2 kg /50kg = 11.304 bags per cu. mtr.
So as with sand
dry volume if always 1.57 for required volume
and aggregate sole qty of aggregate if crushed to get 1 cu. mt we required 1.57 cu.mt
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