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The Troitsky Bridge Building Competition is an annual event that takes place at Concordia University in Montreal, Quebec, Canada in the spring. Participating teams of engineering students come from universities across Canada and the United States. They design and build model bridges out of popsicle sticks, toothpicks, white glue and dental floss.
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units.The connected elements, typically straight, may be stressed from tension, compression, or sometimes both in response to dynamic loads.
Only a few single-lane Pratt truss bridges remain in California today. The Hansen Bridge is closely tied to the community planning and development of Downieville in Sierra County, particularly in its role following the 1937 Downieville flood. It serves as a notable example of the truss bridge design. Its period of significance spans from 1935 ...
A truss arch bridge combines the elements of the truss bridge and the arch bridge.The actual resolution of forces will depend upon the bridge' design. [1] If no horizontal thrusting forces are generated, this becomes an arch-shaped truss which is essentially a bent beam – see moon bridge for an example.
A continuous truss bridge is a truss bridge that extends without hinges or joints across three or more supports. A continuous truss bridge may use less material than a series of simple trusses because a continuous truss distributes live loads across all the spans; in a series of simple trusses, each truss must be capable of supporting the ...
A Howe truss is a truss bridge consisting of chords, verticals, and diagonals whose vertical members are in tension and whose diagonal members are in compression. The Howe truss was invented by William Howe in 1840, and was widely used as a bridge in the mid to late 1800s.
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A cantilever bridge is a bridge built using structures that project horizontally into space, supported on only one end (called cantilevers).For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete.