Answer / islam alam

According to thump role. Slab 0.75-2%. Beam 1. 5- 2%. Column 1. 5- 4%

How do we get this formula Ast=(0.5Fck/Fy) into(1-(in sqrt(1-((4.6Mu)/Fck.bd^2))into bd Fck=grade of cement i.e M25, M20 Fy=grade of steel i.e.Fe415,Fe250 Mu=moment b=width d=depth 

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