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Falsework parallel truss bridges temporarily supporting deck segment box structures Overpass under construction over Interstate 5 in Burbank, California, in July 2021 [4] [5] Sixth Street Viaduct Falsework - Bent 11 Jump Span. Shown in the background is a concrete Y-Arm.
Beam bridges are the simplest structural forms for bridge spans supported by an abutment or pier at each end. [1] No moments are transferred throughout the support, hence their structural type is known as simply supported. The simplest beam bridge could be a log (see log bridge), a wood plank, or a stone slab (see clapper bridge) laid
A slab is ground-bearing if it rests directly on the foundation, otherwise the slab is suspended. [3] For multi-story buildings, there are several common slab designs (see § Design for more types): Beam and block, also referred to as rib and block, is mostly used in residential and industrial applications. This slab type is made up of pre ...
Using fallen trees, stringer bridges can be built. Wood laminated by stress, glued, dowels, or nails lumber are good for panel bridges. New lumber and wood scavenged from buildings and railroad ties can be used to build stringer bridges. [3] A licensed engineer can help operators design a safe, appropriate timber bridge.
It is a beam bridge with a pair of steel girders supporting a 3.3-metre (11 ft) wide timber deck on top of which has been laid a base of black plastic that has been covered with a 20-centimetre (7.9 in) thick concrete slab. The bridge spans 4.8 metres (16 ft) between two concrete piers and is orientated east–west. The bridge spans the Deane ...
The term "covered bridges" is also used for structures in China such as Chengyang Bridge (1912) and Xijin Bridge (rebuilt 1718) which have large enclosed spaces, but for these it appears that space is not provided for commercial or residential use. The term "covered bridge" is sometimes used broadly to describe any "bridge-like structure" that ...