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Table 2 Natural frequency of vibration for Abu Sega church structure

From: Dynamic characteristics of built heritage using ambient noise recordings

Floor

Fundamental resonance frequency (HZ)

Amplification factor

Basement

1st floor

5.5, 7.5–8, 9.3

3–9

Roof

5.5, 7.5–8, 9.3

3–10

Underground crypt