Search results
Results from the WOW.Com Content Network
From 1982 to 1986, the original bridge deck, in 747 sections, was replaced with lighter, stronger orthotropic steel deck panels over 401 nights without closing the roadway completely to traffic. [5] The project not only restored the bridge to prime condition but also reduced the deck weight by 12,300 tons (11,160 metric tons).
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...
The NBI can classify bridges as "structurally deficient," which means that the condition of the bridge includes a significant defect, which often means that speed or weight limits must be put on the bridge to ensure safety; a rating of 4 or lower on any of items 58, 59, 60, or 62 (deck, superstructure, substructure, and culverts, respectively ...
Girder bridge: 1979 Germany Kocher: Highway 4 Lavant Viaduct: P3 and P4 165 m Girder bridge: 1981 Austria Twimberg Highway 5 Rago viaduct P2 150 m Box girder bridge: 1974 Italy Morano Calabro: Highway 6 Europe bridge: P4 146,5 m Box girder bridge: 1963 Austria Brenner Autobahn: Highway 7 Italia Viaduct: P3 145 m Box girder bridge: 1974 Italy ...
The various parts of a truss bridge. A deck is the surface of a bridge. A structural element of its superstructure, it may be constructed of concrete, steel, open grating, or wood. Sometimes the deck is covered by a railroad bed and track, asphalt concrete, or other form of pavement for ease of vehicle crossing.
In the deck-type bridge, a wood, steel or reinforced concrete bridge deck is supported on top of two or more plate girders, and may act compositely with them. In the case of railroad bridges, the railroad ties themselves may form the bridge deck, or the deck may support ballast on which the track is laid.
The rehabilitation plan removed and replaced the bridge deck, other structural adjustments, and the cleaning and repainting of the bridge's steel. The improvements are expected to extend the life span of the bridge by 40 to 50 years. [10] In May 2018, a private campaign named "Light the Hoan bridge [11]" was created to light up the bridge. The ...