How to calculate cement and sand quantities in cement mortar
As 1:1,1:2,1:4,1:6 ?
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Answer Posted / santosh singh
the procedure to calculate quanity is given below
eg. if cement mortar ratio is ( 1:6)
suppose 1 cum of cement mortar work is to be done
then add 60% extra for voids & cavities in case of plaster
then total volume of work = 1 + 60/100 x1 =1.6 cum
quantity of cement in cum = 1.6 / (1+6)= 1.6/7=0.228 cum
but as we know cement is available in market in 50 kg
bags (volume of 50kg cement is = 0.0347 cum)
thu quantity of cement in bags = 0.228/0.0347= 6.57 bags
quantity of sand in cum= 0.228 x 6 =1.36 cum
eg. if cement mortar ratio is ( 1:4)
suppose 1 cum of cement mortar work is to be done
then add 60% extra for voids & cavities in case of plaster
then total volume of work = 1 + 60/100 x1 =1.6 cum
quantity of cement in cum = 1.6 / (1+4)= 1.6/5=0.32 cum
but as we know cement is available in market in 50 kg
bags (volume of 50kg cement is = 0.0347 cum)
thu quantity of cement in bags = 0.32/0.0347= 9.22 bags
quantity of sand in cum= 0.32 x 4 =1.28 cum
this is exact procedure.you can calculate for any ratio of
cement & mortar
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