Survey on Major Worldwide Regulations on Seismic Base Isolation of Buildings

Table 18

Design parameters for static linear analysis of the example hospital buildings.

Case	Reduction factor due to damping		Spectral ordinate (5% damping,475 years return period)
	Damping 27% for high seismicity (Sa(0) = 0.4 g)	Damping 25% for medium seismicity (Sa(0) = 0.2 g)	High seismicity (Sa(0) = 0.4 g)	Medium seismicity (Sa(0) = 0.2 g)
Japan	0.405	0.429	0.2110	0.1121
China	γ = 0.785, η1 = 0.00259, η2 = 0.570	γ = 0.789, η1 = 0.0033, η2 = 0.583	0.1921	0.0974
Russia	0.559	0.577	0.3860	0.1950
Italy	0.559	0.577	0.1274	0.0720
The USA (ASCE 7-10 2010)	0.577	0.597	0.1529	0.0813
The USA (ASCE 7-16 2016)	0.577	0.597	0.1318	0.0696
Chile	0.444	0.461	0.1628	0.0920