The engineer Wilem Frischmann, now aged 87 and still working, was not yet 30 when he designed the structure of Centre Point, a 1960s high-rise office building in central London.

His method was to drill close-packed piled foundations into the ground.

Inspecting the holes himself, he got stuck in one and had to spend the night there until it was discovered how to get him out.

From Rowan Moore’s article in The Observer.

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