Forbidden City College, Chongqing

Forbidden City College, Chongqing
© DID STUDIO

FORBIDDEN CITY COLLEGE, CHONGQING

Atelier FCJZ

ARCHITECTS
Atelier FCJZ

DESIGN TEAM
Zelin He, Yue Yu, Bin Long, Chenchao Pan

COLLABORATION
Brother Cooperation Group

CLIENT
Sunac China

PRINCIPAL ARCHITECTS
Yung Ho Chang, Lijia Lu

PHOTOGRAPHS
Did Studio

AREA
2700 m²

YEAR
2020

LOCATION
Chongqing, China

CATEGORY
Schools, Renovation

SITE

Anderson & Co. is located on the hilly south bank of the Yangtze River in Chongqing, neighboring a Buddhist temple Ciyun Si (Temple of Merciful Clouds) on its west.

Forbidden City College, Chongqing
aerial view. Image © DID STUDIO
Forbidden City College, Chongqing
aerial view. Image © DID STUDIO

The area is designated as the core historic preservation zone in the city.

HISTORY AND CHALLENGE

Anderson & Co., a Swedish trading house, was originally built in 1891 and added on a number of times subsequently. This facility included offices and warehouses.

Forbidden City College, Chongqing
preserved bluestone steps between old and new buildings. Image © DID STUDIO
Forbidden City College, Chongqing
cornices of both restored and new buildings. Image © DID STUDIO

During the Japanese invasion, the historic relics as well as works of art in the Forbidden City in Beijing were shipped to the South to be protected and stored here temporarily.

There are eight buildings remaining on the site although in poor conditions.

Forbidden City College, Chongqing
entrance view. Image © DID STUDIO
Forbidden City College, Chongqing
rammed earth walls. Image © DID STUDIO

According to the historic preservation laws, these buildings are classified in three categories:

Four to be restored according to the original structure, materials, and construction methods (Building No. 2, 3, 4, and 5); one to be renovated (Building 1); and three to be rebuilt with respect to the historic context (Building 6, 7, and 8). The design challenge is how to balance the old and the new.

Forbidden City College, Chongqing
new building with cantilevered eaves shading the steps. Image © DID STUDIO
Forbidden City College, Chongqing
look back onto the entrance. Image © DID STUDIO

CONTINUATION AND INNOVATION

The old buildings employed diverse materials and construction methods: including timer frame and timber and brick mix for structures; solid clay brick, hollow clay brick, and rammed earth for walls; wood window frames, clay-tiled roofs, and stone foundations. We wish to keep a similar richness in the new design.

For the restored buildings No. 2, 3, 4, and 5, we repaired the brick walls and tile roofs and rebuilt the rammed earth walls with contemporary technology.

Forbidden City College, Chongqing
in between spaces. Image © DID STUDIO
Forbidden City College, Chongqing
the top of the blustone steps. Image © DID STUDIO
Forbidden City College, Chongqing
wood truss structure. Image © DID STUDIO

For the renovated building No. 1, we restored the tile roof, kept the hollow brick walls and brick columns, and opened the elevation that faces the square and main entrance with glazed doors.

For the rebuilt buildings No. 6, 7, and 8, we used slates on the roof and glass curtain walls to further increase the openness.

STRUCTURAL INNOVATION

We introduced a laminated timer braced truss structure to achieve a balanced force distribution through small members in Building No. 1 as well as the collapsed portions of Buildings No. 3 and 5 to achieve the original roof form.

Forbidden City College, Chongqing
steel curved beam column. Image © DID STUDIO
Forbidden City College, Chongqing
the damaged parts was repaired with new structure. Image © DID STUDIO

Inside the latter buildings, the laminated trusses and the rebuilt traditional timber frame are juxtaposed. For Buildings No. 6, 7, and 8, bent steel frame is engaged to support a rolling roof form.

PROGRAMS AND CIRCULATION

Due to the historic connection, the Forbidden City College Chongqing with a Museum for the moving of the relics during the war time is planned to occupy the complex.

Forbidden City College, Chongqing
renovated wooden structure. Image © DID STUDIO
Forbidden City College, Chongqing
renovated wooden structure. Image © DID STUDIO

Its programs include exhibitions, lectures, child education, design store, workshops, etc. Restored traditional architecture will be treated as art works on display.

In the circulation design through out the site, we took into consideration of vista points for viewing architecture and created various platforms in the landscape.

Forbidden City College, Chongqing
restored structure. Image © DID STUDIO
Forbidden City College, Chongqing
interior. Image Courtesy of Atelier FCJZ

Buildings have large cantilevered eaves, which offer semi-outdoor spaces for outdoor activities and cover up walkways. The existing cable car tracks, stone steps, and vegetation are all saved as the memory of the site.

Forbidden City College, Chongqing
coexistence of new and old structure. Image © DID STUDIO
Forbidden City College, Chongqing
rebuilidng the damaged structure with wood trusses. Image © DID STUDIO


Forbidden City College, Chongqing
the site by the Yangtze River. Image © DID STUDIO
Forbidden City College, Chongqing
overlooking the site and Yangtze River. Image © DID STUDIO
Forbidden City College, Chongqing
aerial view. Image © DID STUDIO
Forbidden City College, Chongqing
slate tiles on the roofs of the new buildings. Image © DID STUDIO
Forbidden City College, Chongqing
old and new roofs. Image © DID STUDIO
Forbidden City College, Chongqing
slate tile roof. Image © DID STUDIO
Forbidden City College, Chongqing
old and new roofs. Image © DID STUDIO
Forbidden City College, Chongqing
© DID STUDIO


Forbidden City College, Chongqing
a stack of roofs. Image © DID STUDIO
Forbidden City College, Chongqing
eaves. Image © DID STUDIO
Forbidden City College, Chongqing
roof details. Image © DID STUDIO


Forbidden City College, Chongqing
Section
Forbidden City College, Chongqing
Section


Forbidden City College, Chongqing
Elevation


Forbidden City College, Chongqing
GF Plan
Forbidden City College, Chongqing
Site Plan


Forbidden City College, Chongqing
Sections Showing Structural Types
Forbidden City College, Chongqing
Analysis Diagram