what"s the formula to find the quantity (consumption) of cement,sand,aggr

what"s the formula to find the quantity (consumption) of
cement,sand,aggregate for 1m3(1:2:4)?

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what"s the formula to find the quantity (consumption) of cement,sand,aggregate for 1m3(1:2:4)..

Answer / guest

+1440/(1+2+4)=205 kg in cement

205*2=411 kgs
205*4=822 kgs

or

1/7 = 0.14 cum in cment
2/7 = 0.28 cum in sand
4/7 = 0.56 cum in meatal

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