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Case Study Leonardo Bridge Project

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Case Study Leonardo Bridge Project
When Leonardo da Vinci designed a 240 meters bridge it would have been the longest bridge in

the world. His plan was ambitious. In 1502, a skeptical sultan rejected Leonardo's design as

impossible, but 300 years civilization finally embraced the engineering principle - arches as

supports - underlying the construction. The bridge has been constructed, in Norway.

Now instead of spanning the Bosporus , his visionary creation was destined to span 500 years as

a bridge to another millennium. Vebjorn Sand, the man behind the modern project, has a site

with images and details. http://www.vebjorn-sand.com/thebridge.htm Leonardo Bridge Project
In 1502 Leonardo da Vinci did a simple drawing of a graceful bridge with a single span of 720-foot

span (approximately 240-meters.) Da Vinci designed the bridge as part of a civil engineering

project for Sultan Bajazet II of Constantinople (Istanbul.) The bridge was to span the Golden

Horn, an inlet at the mouth of the Bosphorus River in what is now Turkey.
The Bridge was never built.

Leonardo's "Golden Horn" Bridge is a perfect "pressed-bow." Leonardo surmised correctly that

the classic keystone arch could be stretched narrow and substantially widened without losing

integrity by using a flared foothold, or pier, and the terrain to anchor each end of the span. It was

conceived 300 years prior to its engineering principals being generally accepted. It was to be 72

feet-wide (24 meters), 1080-foot total length (360 meters) and 120 feet (40 meters) above the

sea level at the highest point of the span.

Norwegian painter and public art creator, Vebjørn Sand, saw the drawing and a model of the

bridge in an exhibition on da Vinci's architectural & engineering designs in 1996. The power of the

simple design overwhelmed him. He conceived of a project to bring its eternal beauty to life. The

Norwegian Leonardo Bridge Project makes history as the first of Leonardo's

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