100 Bishopsgate

New landmark in the City of London

The 39-storey office building in the City of London has been designed by Allies and Morrison with two distinct facades. To the north and south, the facades include an inclined curtain walling system with fold line detailing. To the east and west, the external vertical and horizontal anodised aluminium fins dominate the elevation creating depth to the envelope.

We have provided a client monitoring role to Brookfield, including providing comment on the cladding contractor proposals, attendance at design reviews, attendance at testing in China and production reviews. Our role will continue with factory visits and we will also have an on-site role for the installation.

The unitised curtain walling has been designed with the outer glass pane of the DGU oversailing the stack joint, reducing the apparent spandrel zone. The fold lines are being manufactured as cranked units taking the geometry challenges into the factory and away from site.

The grand ground floor has a bespoke stainless steel curtain walling system spanning the double height spaces. The system has to be able to accommodate significant movements induced by the tower whilst maintaining a slender appearance.

Testing of the system has been completed in China with Yuanda and manufacturing has now commenced.

Developer: Brookfield | Architect: Allies and Morrison and Arney Fender Katsalidis | Main Contractor: Multiplex | Cladding Contractor: Yuanda Europe | Structural engineer: Robert Bird Group