One Exchange Square is an office development in the City of London EC2. The 13-storey building designed by Fletcher Priest Architects will deliver 428,000 sq ft of high-quality workspace and 15,000 sq ft of retail, fronting both Bishopsgate and the newly redesigned Exchange Square.

The project involved installing approximately 1,500 tonnes of steelwork. The overall scope included metal decking, off-site intumescently-coated steelwork, edge protection & safety fans.

The Western Elevation had major siteworks to extend the floor line and prepare for a high precision exoskeleton feature. The exoskeleton feature had to be made to a precise deformed shape to counteract the future building movement as the building was progressively extended. A bespoke propping system, to build the exoskeleton, was developed to reduce the point loads on the floor plate below which had minimum capacity. Major floor plate extensions were formed from Level 08 to Level 13. Internally, existing voids were infilled approximately and approximately 650 new service holes were formed in the existing steelwork.

One Exchange Square will have exemplary ESG credentials, targeting BREEAM Outstanding, NABERS 5* and Well Platinum. By retaining 90% of the existing structure, the building will have 50% lower embodied carbon than a typical office building of comparable size. As part of our scope of works, Bourne Steel have also installed c.90t of reused steel into the frame to further enhance the carbon credentials of the building.