Jan 19, 2020· One cubic metre of concrete weighs 2.5 Tonnes. Typically, 1m3 of concrete is made up of 350Kg of cement, 700Kg of sand, 1,200Kg of chippings and 150 Litres of water. Subsequently, one may also ask, what is the percentage of steel in RCC? For RCC Beam & Column need 2-3% steel, say 2.5% steel. What is minimum reinforcement?