Rcc The stairs are of the type shown in the below figure, spanning longitudinally and set into pockets in the two supporting beam. Design data: imposed load = 3 kN/m^2 Characteristic concrete...

The stairs are of the type shown in the below figure, spanning longitudinally and set into pockets in the two supporting beam. Design data: imposed load = 3 kN/m^2 Characteristic concrete strengths are f_cu = 30 N/mm^2 Characteristic steel strengths are f_y = 250 N/mm^2 The riser of step = 150 mm The going of step = 260 mm The rise of stair = 1.5 m Effective span length = 3m Try a 125 mm thick waist, effective depth, d = 90 mm