Stay up to date with notifications from The Independent

Notifications can be managed in browser preferences.

Cheesegrater to undergo repair work for 'embrittlement' after third huge steel bolt breaks off one of London’s tallest skyscrapers

The metal bolts are around the size of a human arm

Adam Withnall
Wednesday 14 January 2015 11:54 GMT
Comments
The Leadenhall Building or Cheesegrater
The Leadenhall Building or Cheesegrater (Oli Scarff/Getty Images)

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

The real estate group behind the Cheesegrater skyscraper in London has admitted that another of its huge steel “mega-bolts” has fallen off, bringing the total that have broken to three.

Plans are being made to replace potentially hundreds of the bolts, which are about the size of a human arm, on the 47-storey tower.

Officially named 122 Leadenhall, the Cheesegrater is London’s fourth-tallest building at 737ft, and sparked fears in November after parts of two of its 3,000 bolts fell from the building onto the ground below.

No one was harmed, but that incident led owners British Land to order an investigation by contractor Laing O’Rourke and structural engineers Arup.

In a statement, real estate group British Land said Arup had “confirmed that there is no adverse effect on the structural integrity of the building”.

A view of the new 'Walkie Talkie' tower (L), the 'Cheesegrater' (C) and the 'Gherkin' (R) in central London
A view of the new 'Walkie Talkie' tower (L), the 'Cheesegrater' (C) and the 'Gherkin' (R) in central London (CARL COURT/AFP/Getty Images)

It said all bolts had been checked, and that those which broke were affected by “hydrogen embrittlement” – cracks caused by the use of hydrogen in manufacturing.

The Evening Standard reported that bolts across 11 of the Cheesegrater’s floors were to be replaced. British Land said this was a “precautionary measure”.

The building had been cordoned off from pedestrians while the falling metal bolts were investigated.

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in