Different quantity of steel is used in different elements of Reinforced Cement Concrete (R.C.C).
Generally following is the quantity of steel used for different elements.
Footing : 0.5 % to 0.8 %
Column : 1.0 % to 4.0 %
Slab : 0.7 % to 1.0 %
Beam : 1.0 % to 2.0 %