Original designs of the main building are from the late1960’s. The principal structure is composed of a seven-story (49,600 ft2, 130 ft height) reinforced concrete frame building with unreinforced hollow masonry wall panels in most external facades. The building location on a hurricane wind as well as possible earthquake zone produced concerns to check the structural design and produce retrofit alternatives. A strengthening design was prepared reinforcing outer facades of the existing building with steel bracing and new steel columns. Eccentric bracing were used to avoid interference with existing telephone line panels that were difficult to move. Heavy reinforced concrete jackets were used in some beams and columns of the bottom floor. The new foundation system was composed of several drilled shafts with special footings to tie with the existing foundation system.