Although the moment capacity of a flexural member is not significantly increased by using higher strength
concrete, the deflections are reduced thus allowing larger spans. Despite high strength concrete being a more
brittle material, flexural members cast with high strength concrete exhibit greater rotational ductility due to
lower neutral axis depths [Pendyala et al., 1996]. In seismic design, a beam mechanism is preferred to a column
sidesway mechanism. The formation of beam hinges is assured by having a strong column-weak beam system.
Therefore, higher rotational ductilities of HSC can be an advantage in primary frames