What is the viaduct?
Viaduct is a bridge built from a series of span and designed to pass dry soil, rather than water water. Viaducts can be used in a wide range of ways and numerous examples of this type of bridge construction can be found worldwide, performed in various materials. Viaducts have been built since antiquity to transport legs and trolley, and today can be used for cars, pedestrians, cyclists, trains and trucks. The construction of the viaduct allows the road or rail to quickly bridge the valley or abyss rather than forcing engineers to distribute the road for the road to reach the floors of the valley, and then create a route from the valley. In the construction of the viaduct can initially be very expensive, it is generally cheaper and safer than keeping the road on the plane.
viaduct can also be used in anoblast where several different current operations are overlapped, allowing traffic and under the viaduct to run, makingto a minor interruption of traffic. Viaducts are common features in regions with lots of highways and adapt more streams of operation without being forced to stop traffic. The design of the viaduct is also particularly common in areas where trains and cars must travel in about the same places. Trains can be lowered under the viaduct, while cars can drive or vice versa. In both cases, the automobile traffic does not have to stop for trains and the risk of train/cars collision will be significantly reduced.
In the classic viaduct design, engineers begin the construction of a number of towers and then by connecting towers with arches and the installation of the road. In the case of the viaduct, which is designed to flow under it, the arches must be built especially high to ensure that the passing traffic has enough will. Viaducts above the low valleys and in other situations, where the operation under it is not expected, can have much lower arcs, because clearance is not a problem.
Many historical viaductsIt is made of stone and bricks, but metal and concrete can also be used. In communities with older viaducts, storage organizations sometimes try to keep the viaduct in good operation, because the Stone and Brick Viaducts are considered aesthetically valuable. It is also possible to find examples of abandoned viaducts that remained behind when the roads moved or became impassable, and these places have sometimes become popular with pedestrians.