Number of story

Fixed base

Rubber and sliding isolators (LRB, FSB)

Rubber, sliding with rotation friction dampers at the base of the building (FD, FSB, LRB)

Rubber, sliding with rotation friction dampers at the ground floor level (FD1, FSB, LRB)

The amount of reduction of base shear as a result of isolation structure %

The amount of reduction drift as a result of isolation structure %

Time period (sec.)

Base shear (ton)

Time period (sec.)

Base shear (ton)

Time period (sec.)

Base shear (ton)

Time period (sec.)

Base shear (ton)

8

0.7

655

1.9

350

0.9

324

1.89

351

47%

65%

12

1.1

883

2.37

341

1.41

311

2.36

345

61%

74%

16

1.5

497

2.94

466

1.83

325

2.93

458

6%

28%

20

2

564

3.31

582

2.3

390

3.31

581

−3%

13%