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A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...
Bridges are usually tested by applying a downward force on the bridge. How and where the force is applied varies from one contest to the next. There are two common methods of applying the test force to the bridge: By hanging a container (such as a trash can) from the bridge and loading known weights into the container until the bridge breaks ...
A spaghetti bridge is an architectural model of a bridge, made of uncooked spaghetti or other hard, dry, straight noodles. Bridges are constructed for both educational experiments and competitions. The aim is usually to construct a bridge with a specific quantity of materials over a specific span, that can sustain a load.
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
Suspension bridge: Suspension bridges are suspended from cables. The earliest suspension bridges were made of ropes or vines covered with pieces of bamboo. In modern bridges, the cables hang from towers that are attached to caissons or cofferdams. The caissons or cofferdams are implanted deep into the bed of the lake, river or sea.
Here, simple suspension bridges are made by training the roots of the Ficus elastica species of banyan tree across watercourses. [11] There are examples with a span of over 170 feet (52 m). [12] They are naturally self-renewing and self-strengthening as the component roots grow thicker and some are thought to be more than 500 years old. [13 ...
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The Kintai Bridge (錦帯橋, Kintai-kyō) is a historical wooden arch bridge in the city of Iwakuni in Yamaguchi Prefecture, Japan. The pedestrian bridge was built in 1673, spanning the Nishiki River in a series of five wooden arches. The bridge is located on the foot of Mt. Yokoyama, at the top of which lies Iwakuni Castle.