Seismic Failure Pattern Prediction in a Historical Masonry Minaret under Different Earthquakes

Table 5

The dynamic characteristics obtained before and after the FEM calibration.

Mode	Numerical frequencies FEM (Hz)		Experimental frequencies OMA	Difference (%)
	Before update	After update	SSI	Before update	After update
1	0.849	1.425	1.425	−57	0.00
2	0.851	1.531	1.516	−66	0.15
3	4.339	6.548	6.530	22	0.18
4	4.362	6.692	7.108	27	−4.16