Jun 17, 2016 · When this measurement is done on the basis of volume, we call it Volume Batching. Below are mentioned some of important points to remember before adopting volume batching method in field. Volume batching is not a good method for measuring concrete materials. It is not applicable in case of reinforced concrete structure. In order to calculate the volume of concrete that is based on one bag of cement (i.e. 50 kg cement) in support of the mass proportions of concrete materials. Thus, the absolute volume of concrete for 50 kg of cement = As a result, for the proportion of blend measured, with 3 bag of cement of 50 kg, 0.1345 m3 of concrete will be generated. Use our concrete calculator to help determine how much concrete you need. Be sure to make a 10% allowance for uneven sub-grade, spillage, etc., and round up to the closest ¼ yard. Let us know what you are pouring (flatwork, wall, slab on grade, etc.) If you think a job may need more concrete, tell us up front. Ky unemployment under investigation.