O-14, a recently completed 22-story commercial tower in Dubai's Business Bay, comprises over 300,000 square feet of office space. O-14 is located along the extension of Dubai Creek, occupying a prominent location on the waterfront esplanade. With O-14, the office tower typology has been turned inside out – structure and skin have flipped to offer a new economy of tectonics and of space. The concrete shell of O-14 provides an efficient structural exoskeleton that frees the core from the burden of lateral forces and creates highly efficient, column-free open spaces in the building’s interior. The exoskeleton of O-14 becomes the primary vertical and lateral structure for the building, allowing the column-free office slabs to span between it and the minimal core. By moving the lateral bracing for the building to the perimeter, the core, which is traditionally enlarged to receive lateral loading in most curtain wall office towers, can be minimized for only vertical loading, utilities, and transportation. Additionally, the typical curtain-wall tower configuration results in floor plates that must be thickened to carry lateral loads to the core, yet in O-14 these can be minimized to only respond to span and vibration. Consequently, the future tenants can arrange the flexible floor space according to their individual needs. The main shell is organized as a diagrid, the efficiency of which is wed to a system of continuous variation of openings, always maintaining a minimum structural member, adding material locally where necessary and taking away where possible. This efficiency and modulation enables the shell to create a wide range of atmospheric and visual effects in the structure without changing the basic structural form, allowing for systematic analysis and construction. Credits:Jesse Reiser - Principal/OwnerNanako Umemoto - Owner/PrincipalMitsuhisa Matsunaga - Senior ArchitectJason Scroggin - Senior ArchitectMichael Overby - ArchitectCooper Mack - ArchitectKutan Ayata - ArchitectRoland Snooks - Architect
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