Research Article
Estimation of Modal Properties of Low-Rise Buildings Using Ambient Excitation Measurements
Table 4
Comparison of the damping ratios estimated using the two approaches.
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Floor number | 1st translational mode in E-W direction | 1st translational mode in N-S direction | Damping (RD + CWT) | Damping (RD only) | Difference (%) | Damping (RD + CWT) | Damping (RD only) | Difference (%) |
| 1 | 2.950 | 3.006 | 1.9 | 2.069 | 2.156 | 4.2 | 2 | 2.526 | 3.079 | 21.9 | 2.195 | 2.597 | 18.3 | 3 | 2.761 | 2.710 | 1.8 | 2.109 | 2.100 | 0.4 |
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