地震荷载 | ASCE/SEI 7-16

S_S in % of g	≤ 10	≤ 20	≤ 30	≤ 40	≤ 60	≤ 80	≤ 100	≤ 125	< 150	150*	≤ 200	≤ 250	≤ 321

S₁单位为 g 的 %	≤ 5	≤ 10	≤ 20	≤ 30	≤ 40	< 60	60*	≤ 80	≤ 100	≤ 125	≤ 150	≤ 200	≤ 250

PGA 单位为 % of g	≤ 5	≤ 10	≤ 20	≤ 30	≤ 40	< 50	50*	≤ 60	≤ 75	≤ 100	≤ 125	≤ 150	≤ 175

T_L sec	4	6	8	12	16

风险系数 C_RS	0.7	0.8	0.85	0.87	0.89	0.9	0.91	0.93	0.95	0.96	0.97	0.98	1	1.05	1.1	1.2	1.28	1.3	1.57

风险系数 C_R1	0.8	0.85	0.87	0.89	0.9	0.91	0.93	0.95	0.97	1	1.1	1.2	1.3	1.35	1.5

S_S in % of g