Energy Dissipation and Local, Story, and Global Ductility Reduction Factors in Steel Frames under Vibrations Produced by Earthquakes

Table 9

P_S ratio, 3-level building.

ST	NS direction					EW direction
	Sa/g values					Sa/g values
	0.4	0.6	0.8	1.0	1.2	0.4	0.6	0.8	1.0	1.2
1	27.5	12.9	9.3	7.3	6.1	29.6	15.2	11.2	9.2	7.7
2	65.5	25.8	16.4	12.4	10.2	75.6	33.5	20.6	15.8	12.6
3	181.3	55.8	31.4	21.9	17.1	194.3	70.0	36.5	24.6	18.9