Shake Table Response of Unreinforced Masonry and Reinforced Concrete Elements of Special Moment Resisting Frame

Table 6

Summary of dynamic identification tests.

Testing phase	North–South direction		Damping ratio ζ (%)	East–West direction		Damping ratio ζ (%)
	Period (sec)	Frequency (Hz)		Period (sec)	Frequency (Hz)
Before Test Run-1	0.15	6.45	2.92	0.28	3.48	3.9
After Test Run-2	0.23	4.21	5.63	0.33	2.98	3.83
After Test Run-3	0.37	2.67	4.01	0.51	1.93	2.19