Table2. Design Characteristic Period of Ground Motion


Design Earthquake Groups

Site Category

I0

I1

II

III

IV

First Group

0.20

0.25

0.35

0.45

0.65

Second Group

0.25

0.30

0.40

0.55

0.75

Third Group

0.30

0.35

0.45

0.65

0.90