A Displacement-Based Design Method for Seismic Retrofit of RC Buildings Using Dissipative Braces

Table 6

Parameters of elastic design response spectra.

Limit State	IO	DL	LS	CP
Probability of exceedance	0.81	0.63	0.10	0.05
Return Period (years)	120	201	1898	2475
Peak ground acceleration PGA/g	0.086	0.112	0.315	0.418
Amplification factor	2.276	2.276	2.448	2.485
Transition Period (s)	0.293	0.315	0.380	0.412