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Bolts break on Cheesegrater - but structural integrity 'not affected'

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The owners of Rogers Stirk Harbour + Partners’ (RSHP) Leadenhall Building have insisted there is ‘no risk’ to the structural integrity of London’s latest skyscraper after two connecting bolts broke

It is understood one of the steel bolts, described as the size of a human arm, broke on the fifteenth floor of the building at 122 Leadenhall Street earlier this week. Parts of another fell from the fifth floor on Tuesday (4 November).

As a result an area has been cordoned off around the base of the 47-storey building, known as the Cheesegrater, and contractor Laing O’Rourke and structural engineers Arup have been brought in to investigate the incident.

Building owners British Land and Oxford Properties said a ‘number of precautionary measures’ had been taken and that an ‘examination [was] being undertaken of the remaining bolts’. The AJ has learned that all 3,000 bolts were given a ‘close-up’ visual, internal inspection.

However the results of the forensic tests on the bolts are not expected until late next week at the earliest.

Though both bolts came from nodes on the megaframe, the developer insisted ‘the design of the structure allows for isolated events of this type and [would] not affect the structural integrity of the building’.

A spokesman said the owners were ‘not speculating’ about the causes at this stage.

In September it emerged RSHP was in negotiations to relocate its own studios into the 14th floor of the building – a 1,600m² space which could cost about £1 million a year in rent.


The Leadenhall Building


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Readers' comments (1)

  • Surely, if the stresses in the completed structure were significant enough to cause the failure of such substantial bolts, those stresses will now have been transferred and concentrated in areas of the structure which were never intended to take them, no?

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