Analysis of the Seismic Performance of Isolated Buildings according to Life-Cycle Cost

Table 1

Damage index limits for RC frames.

Damage state		None	Slight	Moderate	Severe	Collapsed
Drift ratio	Superstructure	0.002	0.004	0.008	0.02	0.05
	Isolated layer	0.51	0.90	1.28	1.79	2.05