
Da Vinci's self supporting bridge
Bridge design

Bridge design
Leonardo da Vinci's self-supporting bridge is a bridge design from the Codex Atlanticus (written between 1478 and 1518) with the unique feature of requiring no nails, dowels, or ropes in its construction. The structure (only theorized by da Vinci) is held together solely by the compressive forces from its own weight and the friction between its wooden components.
Read on Wikipedia · Image Leonardo da Vinci (Codex Atlanticus, written between 1478 and 1518), Public domain
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