
Weight of Sand = Volume of Sand x Density of Sand = 1.596 m 3 x 1650 kg/m 3 = 2633.4 kg When you add the weight of cement and sand, you get the total weight of dry ingredients, which is 3207.96 kg. To determine the water quantity, you simply need to take 25% of dry ingredients = 25% of 3207.96 kg = 801.99 kg = 801.99 litres.