Nine-story, 127,200 SF office building located on a small site at the corner of West Chicago Avenue and North Franklin Street directly adjacent to an active elevated transit line in Chicago, IL. The structural system for the project is a reinforced concrete frame consisting of columns and post-tensioned slabs supporting gravity loads and shear walls around the stair and elevator cores providing resistance to lateral loads. The foundation system consists of belled caissons. Due to tight site conditions the tower crane foundation was incorporated into the structural design to optimize the layout and design.