How to calculate the watercement ratio for concrete ...
Now, let us take a example to calculate the W/C ratio.. We need to know following thing to calculate water cement ratio: Grade of concrete. Eg: M25, M20, M10 etc. Amount of cement per m³. Watercement ratio. Calculation Procedure. Let us assume, Grade of concrete is M15. Let, Cement required for 1 m³ of M15 grade concrete be 6 bags.