Europe’s tallest (concrete) building

The Shard at London Bridge may look like it’s made out of glass and steel. Architect Renzo Piano may even have named it for its resemblance to a shard of glass. But it’s actually made out of concrete. Well, a significant proportion of it is anyway, and it’s that concrete that is hopefully going to stop it swaying too much in the 95mph winds at the top… The Winter 2011 edition of Concrete Quarterly, which I edit for UBM and The Concrete Centre, got to grips with how this extraordinary structure was designed and built, and how exactly you pump high-strength concrete more than a quarter of a kilometre into the sky.