Search results
Results from the WOW.Com Content Network
On April 6, 2001, the reconstructed wooden footbridge was opened, being the longest wooden bridge in Switzerland. The Kapellbrücke is a 204-metre-long (669 ft) bridge crossing the Reuss in the city of Lucerne in Switzerland. It is the oldest wooden covered bridge in Europe, and one of Switzerland's main tourist attractions. [citation needed]
The earliest bridges in North America were made of wood, which was abundant and cheaper than stone or masonry. Early wooden bridges were usually of the Towne lattice truss or Burr truss design. Some later bridges were McCallum trusses (a modification of the Burr truss). About 1840, iron rods were added to wooden bridges.
Building balsa wood bridges as a part of a unit on statics, structures, forces, or construction trades is used by teachers to make the learning environment hands-on and to give students a real-world example of material covered in class. The building of balsa-wood bridges is often used as an educational technology. It may be accompanied by a ...
Simple suspension bridges, for use by pedestrians and livestock, are still constructed, based on the ancient Inca rope bridge but using wire rope and sometimes steel or aluminium grid decking, rather than wood. Living root bridges in Nongriat village, Meghalaya. In modern bridges, materials used instead of (fiber) rope include wire rope, chain ...
In contrast, materials employed in other arch bridge types, including wood, concrete, reinforced concrete, prestressed concrete, metal, and composites, demonstrate some elasticity and can accommodate flexion, enabling the construction of bridges with greater spans. Saint-Martial bridge in Limoges, a medieval bridge with pointed arches.
Although large bridges of wooden construction existed in China at the time of the Warring States period, the oldest surviving stone bridge in China is the Zhaozhou Bridge, built from 595 to 605 AD during the Sui dynasty. This bridge is also historically significant as it is the world's oldest open-spandrel stone segmental arch bridge.
The design principle behind the Burr arch truss is that the arch should be capable of bearing the entire load on the bridge while the truss keeps the bridge rigid. Even though the kingpost truss alone is capable of bearing a load, this was done because it is impossible to evenly balance a dynamic load crossing the bridge between the two parts. [5]
The bridge's Australian design and technological innovation was a source of pride for the people of NSW. [1] Despite the demolition of the eastern approach to the bridge and the construction of the monorail track, Pyrmont Bridge retains its essential heritage values. [1]