Building on SOM
s tradition of innovative engineering, the design for a banks new headquarters incorporates a distinctive external diagrid that significantly reduces solar gain. Inside, responsive solar shading technology and natural airflow enhance staff wellbeing.
Skidmore, Owings & Merrill (SOM) has completed a 158-meter-tall, 33-story tower, located on the edge of a public park at the center of one of Shenzhens key business districts, that responds to the regions tropical climate through a series of biophilic and sustainable design solutions. The firm was commissioned by Shenzhen Rural Commercial Bank in 2012 to design a new headquarters that balances the banks vision for the future alongside its history as a rural credit union.
The towers façade is defined by an external diagrid, which serves as both the buildings structure as well as an important solar shading element. At its base, the diagrid widens to create framed openings and views to the surrounding park and South China Sea, a short walk from the building.
Were always exploring opportunities to synthesize inventive engineering solutions with architectural design. The Rural Commercial Bank Headquarters gave us the chance to incorporate a diagridsimilar to an exoskeletonthat pulls the structure to the exterior and effectively suspends the tower within to create column-free workspaces, explains Scott Duncan, SOM Design Partner.
Drawing upon principles from Feng Shui, in which water and wealth are intrinsically linked, the lobby is encircled by a reflecting pool and features a rippling wall of water adjacent to the main entrance. A 15 meter high rain curtain, with droplets of water that cascade down small translucent filaments, lines the lobbys ultra transparent glass walls. On hot summer days, these water features provide an evaporative cooling effect for the entire building. Above, suspended lighting fixtures mimic droplets of rain and the lobbys marble walls shift from a textured to honed finish to evoke waters effect on stone.
Three essential elementsearth, water and airfigure prominently in the building features, from the multistory rain curtain in the main lobby, to the striated marble cladding the towers elevator core, and to the natural ventilation system that brings fresh air into common areas and office spaces. Reflecting pools, grey granite paving and seating areas, and arrays of trees and ground cover define the main entrance spaces and small gardens at the base of the tower. This tactile experience at ground level transitions and becomes more atmospheric as one progresses up the tower to the open floor plans and floating diagrid above. At the crown of the tower, operable walls and an outdoor deck blur distinctions between indoor and outdoor spaces.
Two vertical atria span the height of the tower. On each floor, employees can use louvres to open and close vents, accessing fresh air from the atria. This allows the building to breathe when Shenzhens climate is pleasant, filling the entire building with fresh air so tenants can enjoy the same air inside as they do outside. By functioning like airways in a body and cycling fresh air throughout the building, these features generate significant savings in environmental and energy efficiency. This system prioritizes tenant comfort and wellbeing to a degree typically unheard of in office environments. Interior spaces are defined by a minimal glass perimeter wall and a daylight-responsive shading system. A communicating stairway runs the height of the tower, fostering connectivity and collaboration among coworkers.
SOMs work on the Shenzhen Rural Commercial Bank Headquarters included architecture, mechanical, electrical and plumbing, structural and civil engineering. The tower is LEED Platinum and is targeting China Green Star certification.