The new building would provide the physical environment for collaboration and idea sharing through the internal mix of open workplaces, amenities and informal meeting spaces. Large stairwells between the floors form cascading double-height communal spaces throughout the headquarters. These continuous spaces enhance connectivity between different departments and amenities, which may include basketball courts, a running track, a cafeteria and screening rooms. The amenity floors are located so they can feed directly out onto the roof top parks.

When asked to design an apartment block next to a parking garage, BIG saw an opportunity to explore a new form of symbiotic urbanism. Rather than placing a traditional slab of apartments next to a block of cars, BIG proposed mixing the two and exploiting their differences as a strength rather than a weakness: cars need large floor plates and good proximity to the street, while houses want sunlight and views. As a result, the parking is turned into a podium for the building&#;s homes that form a stepping landscape of houses with gardens.

The building’s structure is designed as a stack of two volumes, or rectangle ‘blocks’ &#; two per floor &#; with each pair rotated degrees from the floor below. On the interior, each individual volume is expressed as a rectangular wood-clad truss on the long edges, and as a floor-to-ceiling glass facade on the shorter sides. The continual rotation of each floor creates a sky-lit, central atrium at the heart of the building that provides direct views into classrooms and research spaces from all levels.

The new OPPO R&D Headquarters, or O-Tower, resolves these competing requirements by translating a traditional office slab with the perfect depth for access to daylight into a cylindrical courtyard building that is compact yet also providing large, contiguous floor area. Pushing down the southern edge of the building to the ground minimizes the external surface area of the more solar exposed façade while maximizing views out from the inward façade, which is in turn self-shaded from solar gain by the geometry of the tower. The massing is a manifestation of a building form optimized to reduce energy use and maximize access to natural light.

With Chongqing’s unique location between the mountains, impressive cloud formations shield the building from direct sun exposure and creates a special atmosphere condition that allows the façade designs to be more transparent than usual. To protect the façades and exterior public spaces from further sun radiation and heavy rain, the building’s rooftops are extended by a significant distance, depending on the façade’s orientation. The roof also drops all the way to the central courtyard in one place, creating access to the roof lush garden, and in other places, the roof lifts in two corners to create entryways from the inside.