Yaesu GranRoof

The redevelopment of Tokyo Central Station is one of the largest and most important projects in the heart of the city. The building complex consists of two buildings, each around 200 m high, the associated entrance buildings and a canopy (a steel membrane roofing).

Wide-Span Membrane Structure with Complex Geometry

The “Yaesu GranRoof” canopy designed by Werner Sobek connects the two high-rise buildings over a length of almost 300 m and at the same time provides weather protection for the new entrance buildings. The long-span membrane structure required extraordinary engineering skills due to its complex geometry and the high, outstanding earthquake loads.

In 2015, the project was awarded the JSCA Incentive Award.

Jahn Architecture Inc., Chicago/USA

Planning time
2002 − 2005

Construction time
2006 − 2012

Services by Werner Sobek
Structural engineering (WP 1 − 3 + 4 − 5 (consultative) acc. to § 64 HOAI)

Japan Railway Company, Tokyo/Japan

Rainer Viertlböck, Gauting/Germany

AIJ Awards (Selected Architectural Designs 2016/Architectural Institute of Japan) 2015
JSCA Incentive Award 2015
AIA Chicago Distinguished Building Award – Citation of Merit 2016


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