1 bags cement 50 kg. no of cement bags 316.850 6.336 bags. ans. : 6.336 bags (316.8 kgs) of cement quantity are used in m15 grade of 1m3 concrete. calculate sand quantity in m15 grade of 1m3 concrete. 1m3 35.32 cuft. volume of sand ( 27) 1.54 35.32. volume 15.54 cuft.