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Actual or physical bridges composed of eight segments can be found in Japanese gardens both inside and outside of Japan. The bridge consists of eight wooden or stone planks arranged in a zig-zag pattern, atop piles of wood or stakes. [16] [17] The winding zig-zag pattern promotes a slow crossing that allows different vistas to be admired. [18]
A zig-zag bridge is often seen in the Chinese garden, [1] Japanese garden, [2] and Zen rock garden. It may be made of stone slabs or planks as part of a pond design and is frequently seen in rustic gardens. It is also used in high art modern fountain gardens, often in public urban park and botanic garden landscapes.
In a simple suspension bridge the deck lies on the main cables In a suspended deck bridge the deck is carried below the main cables by vertical "suspenders" Comparison of a catenary (black dotted curve) and a parabola (red solid curve) with the same span and sag. The catenary represents the profile of a simple suspension bridge, or the cable of ...
Royal Engineers construct a Bailey bridge in Italy, September 1943. Wood planks are being laid over the stringers to construct the roadbed. The success of the Bailey bridge was due to the simplicity of the fabrication and assembly of its modular components, combined with the ability to erect and deploy sections with a minimum of assistance from heavy equipment.
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
Built in 1892, the Androscoggin Swinging Bridge has two steel A-frame towers, each 30 feet 6 inches (9.30 m) in height, mounted on concrete abutments. Wire ropes are suspended from the tower, supporting a wooden plank deck suspended from the cables by metal rods, and railings 3 feet 6 inches (1.07 m) high.
A trestle bridge is a bridge composed of a number of short spans supported by closely spaced frames. A trestle (sometimes tressel) is a rigid frame used as a support, historically a tripod used to support a stool or a pair of isosceles triangles joined at their apices by a plank or beam such as the support structure for a trestle table.
The Deep River Camelback Truss Bridge is a steel camelback truss resting on stone and concrete piers, with a macadam road surface covering a plank deck.. It spans the Deep River in North Carolina, United States between the hamlets of Gulf in Chatham County and Cumnock in Lee County in a quiet rural setting amid woods and farmlands on both sides of the river. [2]