The steel-framed structure has been built around a retained core from a previous 1970s-built structure. The new building provides 32,500m² of floor space, 60% more than the old office tower.
Replicating the original concrete structure’s octagonal shape, One Angel Court incorporates two podiums, north and south, both in the same positions as the previous building’s podiums, but at seven-stories high these podiums are taller.
According to Mace Project Manager for Structures, Marios Antoniades, there are a number of reasons why the new tower and connecting podiums are steel-framed instead of concrete.
“Steel has helped us achieve longer spans, a quicker construction programme, add one additional floor and a double-height plant enclosure to the top of the tower, while allowing us to re-use the existing core and foundations.”
Waterman’s Director, Mark Terndrup, said: “We are very proud to have been involved in this prestigious scheme right from its inception in 2010. The completion and opening is a tremendous milestone for our multidisciplinary engineering and environmental teams.
“We worked closely with Fletcher Priest Architects throughout to provide sustainable and innovative solutions which have made this an exemplary project, one of the first London City commercial offices to secure a BREEAM 2014 ‘Excellent’ Design Stage Assessment.”