CALCULATE QUANTITIES OF MATERIALS FOR CONCRETE

         Quantities of materials for the production of required quantity of concrete of given mix proportions can be calculated by absolute with this simply method. This method is based on the principle that the volume of fully compacted concrete is equal to the absolute volume of all the materials of concrete, i.e. cement, sand, coarse aggregates and water.
Mix Ratio 1:2:4 - - (1:2:4)=1+2+4=7

7 is mixing propotion

Volume of wet cement concrete - 1.54 to 1.57

unit weight of cement is 1440kg/cum

1 bag of cement – 50kg/bag - =50/1440=0.034722 cum

Cement = 1.54/7=0.22

0.22/0.03472=6.33 bags

1bag of cement = 50kgs

=6.33*50kgs=316.82 kgs

sand = 0.22*2=0.44cum

2 is the mixing of proportion

 Granite = 0.22*4=0.88cum

4 is the mixing of proportion 
 note 3.8m3=5 tonnes

CEMENT = 6.33 NOS BAGS SAND = 0.46 M3       GRANITE  = 0.88 M3