Table 1.

Expressions for the evaluation of fundamental period of vibration.

Expression	Reference
T = 0.053H 0.9	Goel and Chopra [30]
T = 0.0294H 0.804	Hong and Hwang [39]
T = 0.067H 0.9	Chopra and Goel [40]
T = 0.1H	Crowley and Pinho [41]
T = 0.055H	Crowley and Pinho [42]
T = 0.026H 0.9	Guler et al. [43]