ABSTRACT
A unified functional bearing system uses lead rubber bearing (LRB) which serves as both vertical bearing for gravity loads and lateral resistant device for seismic loads. LRB must be designed for all loads including seismic loads. A separated functional bearing system, on the other hand, consists of two separated bearings which are designed according to each separated functional requirement. One bearing supports the vertical force including dead and live loads, and another one serves as a shear panel damper for lateral seismic loads.
