Vertical Load Carrying System | Concrete slabs over metal decks (basement 9", 1st floor 7.5", 2nd-5th 6", roof 6" & 7.5", penthouse & high roof 6") supported by steel girders and steel columns on high damping rubber (HDR) isolators. |
Lateral Force Resisting System | Perimeter braced (chevron) and moment resisting steel frames (above the 2nd floor) and concrete shear walls (below the 2nd floor) isolated by 70 HDR bearings and 12 friction dampers (sliders). The HDR bearings are 23" high, 40" in diameter and the design displacement is 20". |
Foundation Type | Drilled cast-in-place concrete piles (24" diam., 35' long) in groups of 2 to 15 piles. |
Remarks | Funding for the building instrumentation was provided by the owner, as required by OSHPD. |