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Typical diameters are 1/8", 3/16" for residential and 3/16" and 1/4" for commercial applications. [5] There are many different types cable and strand (also referred to as wire rope ). Cable and strand is available in galvanized carbon steel, type 304 stainless steel, or the highly corrosion resistant, type 316 stainless steel (best for coastal ...
Generally, the depth of the girder is no less than 1 ⁄ 15 the span, and for a given load bearing capacity, a depth of around 1 ⁄ 12 the span minimizes the weight of the girder. Stresses on the flanges near the centre of the span are greater than near the end of the span, so the top and bottom flange plates are frequently reinforced in the ...
The Akashi Kaikyō Bridge's orthotropic deck allowed the Japanese to build the longest span at about 6,000 ft (1,800 m), or 50% longer than the Golden Gate Bridge. Orthotropic decks permit a very shallow deck depth which reduces the steepness of approach gradients and hence their costs.
New River Gorge Bridge has the longest free span of all deck arch bridges: 518 m. This is the timeline of the 3 longest supported deck arch bridge spans in the world, where the road deck lies on top of the arch. The deck is supported by columns, truss, rubble or lies directly on the arch. These bridges are often found in narrow valleys.
A grid deck uses beams and diaphragms as the supporting structure. The supporting system of a grid deck is analyzed using a grillage analysis. A slab deck is one where the deck is analyzed as a plate. If the slab has a stiffness that is different in two directions (at right angles), then the deck is known and analyzed as an orthotropic deck.
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