GDL

ABSTRACT




Bridge, structure designed to provide continuous passage over an obstacles. Bridges commonly carry highways, railroad lines, and pathways over obstacles such as waterways, deep valleys, and other transportation routes. Bridges may also carry water, support power cables, or house telecommunications lines. Some special types of bridges are defined according to function. An overpass allows one transportation route, such as a highway or railroad line, to cross over another without traffic interference between the two routes. The overpass elevates one route to provide clearance to traffic on the lower level. An aqueduct transports water. Aqueducts have historically been used to supply drinking water to densely populated areas A viaduct carries a railroad or highway over a land obstruction, such as a valley. Truss bridges utilize strong rigid frameworks that support these bridges over a pan. Trusses are created by fastening beams together in a triangular configuration. The truss framework distributes the load of the bridge so that each beam shares a portion of the load. Beam, cantilever, and arch bridges may be constructed of trusses Truss bridges can carry heavy loads and are relatively lightweight. They are also inexpensive to build.




Modification at bridge parker type to squeeze framework bridge side to load side with the result that hope bridge will be stabile and more have esthetics. The modification exactly carried out at top side of framework bridge which is flare up between ones framework and other the function like viscous. with the result that the front appear like polygon most of stiff that is triple.

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