sand and aggregate ratio (m20sand and aggregates required for 1㎥ for Nominal mixes as: M-10. M-15. M-20. M-25 (Nominal mix) Let me show you how to calculate the quantities for above Nominal mixes one by …Birla A1 Concrete calculator for Slabs will help you estimate the amount and grade of cement you will require for the size of your home ... Grade of concrete M10