Table 1:
Damping Coefficient
B.
Effective Damping (Percentage of Critical)
B (where Structural Period ≥ T
0
)
≤2
0.8
5
1.0
10
1.2
20
1.5
30
1.8
40
2.1
50
2.4
60
2.7
70
3.0
80
3.3
90
3.6
100
4.0