| Number of story | Effect on drift as a result of adding rotation friction dampers at the base of the building on isolated structure % | Effect on drift as a result of adding rotation friction dampers at the ground floor level on isolated structure % | |
| 8 | Increase (48%) | Almost without change | |
| 12 | Increase (18%) | Reduction (13%) | |
| 16 | Increase (27%) | Reduction (8%) | |
| 20 | Increase (15%) | Reduction (15%) |