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Hagia Sophia

Structural engineers have spent much of the last 14 centuries in awe of the Hagia Sophia church built by the Romans on a hill overlooking the Turkish capital Istanbul - then known as Byzantium, eastern capital of the Roman Empire. Emperor Justinian and his designers Anthemius and Isidorus won their place in engineering history with their bold use of semi-domes flanking an innovative main dome structure to increase the column-free space below. Between them the dome and semi-domes create ...

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