Ambient Noise Spectral Ratio in Site Effect Estimation in La Mesa de Macaracas, Panama

Table 1

Site class definition used in this project [16, 17] and the approximately corresponding NEHRP site class [18].

Site class	Site natural period (s)	Predominant frequency (Hz)	(m/s)	NEHRP class
SC I: rock/stiff soil				A+B
SC II: hard soil				C
SC III: medium soil				D
SC IV: soft soil				E