Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

Table 3

Ductility and stiffness of specimens.

Beam	Deformation ductility index	Stiffness (kN/mm)
		Initial secant	Average
O	2.81	70.80	35.71
T	2.34	41.49	29.88