Vertical Load Carrying System | The 1st floor slab is 10" concrete supported on concrete beams. The upper floors consist of a 3.25" lightweight concrete over 3" metal deck supported by steel beams and columns. Building is supported on 53 friction pendulum bearings which are installed on 7'10" tall concrete pedestals. |
Lateral Force Resisting System | 4-story steel braced frames (chevron type) isolated with 53 friction pendulum system (FPS) bearings. Supplemental damping is provided by 15 viscous dampers between the Foundation and 1st Floor. |
Foundation Type | 12" concrete mat foundation with 3' to 3.5' deep concrete grade beams in both directions. |
Remarks | Designed according to 1994 UBC. Dynamic analysis was performed using ETABS and 3D-BASIS. The period of the fixed base building is about 0.4 sec. and that of the isolated building is about 3 sec. |