Project led by Eric Gordon while employed at a previous firm.
London, United Kingdom
Pelli Clarke Pelli Architects; Adamson Associates Architects
Canary Wharf Contractors Ltd.
One of five new buildings on the Heron Quays site in Canary Wharf, a business district in the Docklands area of East London, the 33-storey 25 Bank Street marks the European headquarters of investment bank J.P. Morgan & Co.
Containing 25,000 ft2 of usable office space over a multi-level podium and basement level, the tower is designed for commercial use with floor plates built to suit banking and trading operations.
A concrete core and perimeter steel columns support the composite floor slabs and long span steel beams.
Challenge: The podium structure spans the Docklands Light Railway below, requiring the structure to clear span over the rail lines and be erected during ongoing operation of the lines.
Solution: An innovative, sequential design and erection strategy was adopted. A steel support rail was constructed down each side of the rail lines. Light trusses capable of supporting the structural steel frame were placed over the rail lines from the available access area in a cluster, and then jacked out horizontally along the support rail to their final location. A crash deck was placed over the trusses, and the five storey structural steel frame was then erected. At the high-storey-height plant room at the roof level, heavy permanent support transfer trusses, capable of supporting the entire building weight, were erected. The weight of the structure was then transferred from the erection trusses to the permanent trusses.
The first level above the rail lines was designed for the effects of blast from devices placed in the rail corridor below.