This all-precast, ten-story building in Oklahoma City uses a combination of architectural precast and structural precast, prestressed concrete components. Over 1700 such components were used. The exterior panels not only form the architectural envelope but also provide a key structural element of the building. The architectual precast concrete was finished in three hues (white, red granite and a gray andblast finish) to provide a distinctive aesthetic appearance. A major structural feature of the building is the use of a central core comprising large segmental precast units posttensioned to the foundation. This core provided lateral stability during construction and is designed to resist high velocity winds and seismic Zone II forces during the life of the building. The purpose of this article is to present the design challenge and the solution adopted. Aesthetic and structural design considerations are presented together with the production, transportation and erection highlights. It is emphasized that the s successful completion of this building was due to a carefully coordinated team effort.
