### How to calculate sand cement and ballast volumes in

Jul 19, 2020 Total KGs required =316.8 Kg/m3. Cement bags (Assume 50KG bags) = 316.8/50 = 6.3 Bags of cement. Sand. Sand ratio/Total ratio =2/7 *1.54 = 0.44 m3. Taking the density of sand as 1680 Kg/m3. Sand required : 1680 * 0.44 =739.2 KG. Sand is sold in tonnes which is given by: Kgs required/1000 to give you the number of tonnes. read more