Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building

Table 2

Natural frequencies and modal damping ratios for the structure during ambient test phases 1 to 6.

	Phase 1	Phase 2	Phase 3	Phase 4	Phase 5	Phase 6
f (Hz)	7.47	7.36	7.15	6.85	5.85	6.85
ζ (%)	6.38	6.45	6.73	7.11	11.65	7.97