An Investigation on Soil Amplification through Site Factors Used in Seismic Design Codes

Table 1

Site classification [6, 17].

Site class	Soil type	(m/s)
ZA	Hard rock
ZB	Rock	760–1500
ZC	Very dense soil/soft rock	360–760
ZD	Stiff soil	180–60
ZE	Soft soil
ZF	Soils requiring site-specific evaluation	N/A