Formula for calculating cement consumption for M20 grade nominal mix concrete:::::
M20 = 1:1.5:3
Volume = 1+1.5+3=(5.5 parts )
Total volume ingredients for using 2omm jelly =1.57
Volume of broken stone Require = (3/5.5) x 1.57 = .856 Cum
Volume of sand Require = (1.5/5.5 ) x 1.57 = .471 Cum
Volume of cement = (1/5.5) x 1.57 = .285 Cum = .285 x1440 = 411 kg = (8.22 bag )
For 1Cum of M20 ( 1:1.5:3 ) 20mm
ANSWER:
Jelly = 0.856 cu.m
Sand = 0.472 cu.m
Cement = 8.22 bags
Similarly we calculate for other grade concretes..
M20 = 1:1.5:3
Volume = 1+1.5+3=(5.5 parts )
Total volume ingredients for using 2omm jelly =1.57
Volume of broken stone Require = (3/5.5) x 1.57 = .856 Cum
Volume of sand Require = (1.5/5.5 ) x 1.57 = .471 Cum
Volume of cement = (1/5.5) x 1.57 = .285 Cum = .285 x1440 = 411 kg = (8.22 bag )
For 1Cum of M20 ( 1:1.5:3 ) 20mm
ANSWER:
Jelly = 0.856 cu.m
Sand = 0.472 cu.m
Cement = 8.22 bags
Similarly we calculate for other grade concretes..
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