Answer Posted / khan9219362784

Ratio for concrete M20 equal is 1,1,2
Total volume equal is 1cft 
Concrete dry volume equal is 1.52
Cement bags= 1/4*28.8*0.028*1.52 equal is 0.306 bags
            = 15.32 kg cements 
Sand equal is 1/4*0.028*1.52 equal is 0.170 Cum
            = 0.375 cft sand
Agregats equal is 2/4*0.028*1.52 equal is 0.021 Cum
           =  0.751 cft agregats

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