Part of a steel bolt from the Leadenhall Building — aka the Cheesegrater — has come loose and fallen from its fifth floor.
The bolts, which connect the steel frame of the building, are roughly the size of an adult arm. The section that snapped and fell is about the size of a hand. An area around the building has been cordoned off, although no-one was hurt in the incident.
A second steel bolt also broke off from the 19th floor, but was contained within the building. Approximately 2,998 bolts have as yet not snapped.
The idea of bits of bolt hurtling from a 15,000-tonne steel frame, 47-storey building is disconcerting to say the least, although a spokesman from developers British Land says the structural integrity of the building hasn't been compromised.
Contractor Laing O’Rourke and structural engineers Arup are conducting an investigation.
Much of the building's components are custom made — including two of the four cranes used to put the structure together — although we're not sure if this is the case for the bolts in question.
