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An anchor portal or H-frame tower is a gantry structure supporting overhead power lines in a switchyard. Their static function is similar to a dead-end tower. Anchor portals are almost always steel-tube or steel-framework constructions.
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An anchor portal or H-frame tower is a gantry structure supporting overhead power lines in a switchyard. Their static function is similar to a dead-end tower. Anchor portals are almost always steel-tube or steel-framework constructions.
A skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 meters (330 ft) or 150 meters (490 ft) in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Historically, the term first referred to buildings with between 10 and 20 stories when these types of buildings began to be constructed in the 1880s. Skyscrapers may host offices, hotels, residential spaces, and retail spaces.
A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. Simple suspension bridges, which lack vertical suspenders, have a long history in many mountainous parts of the world.
A cable-stayed bridge has one or more towers, from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly.
A crane is a machine used to move materials both vertically and horizontally, utilizing a system of a boom, hoist, wire ropes or chains, and sheaves for lifting and relocating heavy objects within the swing of its boom. The device uses one or more simple machines, such as the lever and pulley, to create mechanical advantage to do its work. Cranes are commonly employed in transportation for the loading and unloading of freight, in construction for the movement of materials, and in manufacturing for the assembling of heavy equipment.
A transmission tower is a tall structure, usually a lattice tower made of steel that is used to support an overhead power line. In electrical grids, transmission towers carry high-voltage transmission lines that transport bulk electric power from generating stations to electrical substations, from which electricity is delivered to end consumers; moreover, utility poles are used to support lower-voltage sub-transmission and distribution lines that transport electricity from substations to electricity customers.
Sunshine 60 is a 60-story, mixed-use skyscraper located in Ikebukuro, Toshima, Tokyo, adjoining the Sunshine City complex. At the time of its completion in 1978, the 239.7 m (786 ft) building was the tallest in Asia, a title it held until 1985 when it was surpassed by the 63 Building in Seoul. Sunshine 60 was also the tallest building in Tokyo and Japan until the Tokyo Metropolitan Government Building was completed in 1991, and housed the world's fastest elevators until the opening of the Yokohama Landmark Tower in 1993; Mitsubishi Electric installed the elevators at the former's highest-rise bank as well as the latter, and Mitsubishi Estate owns both buildings.
A dead-end tower is a fully self-supporting structure used in construction of overhead power lines. A dead-end transmission tower uses horizontal strain insulators at the end of conductors. Dead-end towers may be used at a substation as a transition to a "slack span" entering the equipment, when the circuit changes to a buried cable, when a transmission line changes direction by more than a few degrees, or at intervals along a straight run to limit the extent of a catastrophic collapse.
The eastern span replacement of the San Francisco–Oakland Bay Bridge was a construction project to replace a seismically unsound portion of the Bay Bridge with a new self-anchored suspension bridge (SAS) and a pair of viaducts. The bridge is in the U.S. state of California and crosses the San Francisco Bay between Yerba Buena Island and Oakland. The span replacement took place between 2002 and 2013, and is the most expensive public works project in California history, with a final price tag of $6.5 billion, a 2,500% increase from the original estimate of $250 million, which was an initial estimate for a seismic retrofit of the span, not the full span replacement ultimately completed. Originally scheduled to open in 2007, several problems delayed the opening until September 2, 2013. With a width of 258.33 ft (78.74 m), comprising 10 general-purpose lanes, it is the world's widest bridge according to Guinness World Records.
A gantry is an overhead bridge-like structure supporting equipment such as a crane, signals, or cameras.
A gantry crane is a crane built atop a gantry, which is a structure used to straddle an object or workspace. They can range from enormous "full" gantry cranes, capable of lifting some of the heaviest loads in the world, to small shop cranes, used for tasks such as lifting automobile engines out of vehicles. They are also called portal cranes, the "portal" being the empty space straddled by the gantry.
Hampden Bridge is a heritage-listed single-span suspension bridge that carries Moss Vale Road (B73) across the Kangaroo River, in Kangaroo Valley, in the City of Shoalhaven local government area of New South Wales, Australia. The bridge was designed by Ernest de Burgh and built by Loveridge and Hudson. The property is owned by Transport for NSW. It was added to the New South Wales State Heritage Register on 2 August 2019.
The Yangtze River power line crossings are overhead power lines that cross the Yangtze River in China. There are at least three power line crossings on the Yangtze River at Jiangyin, Nanjing, and Wuhu. The towers of the crossing in Jiangyin are among the highest in the world.
Elmer Gantry is a 1960 American drama film about a confidence man and a female evangelist selling religion to small-town America. Adapted by director Richard Brooks, the film is based on the 1927 novel of the same name by Sinclair Lewis, and stars Burt Lancaster, Jean Simmons, Arthur Kennedy, Shirley Jones and Patti Page.
The Tahune AirWalk is a steel canopy walkway located in the Tahune Forest area 29 km from Geeveston and sits over the banks of the Huon River in the Huon Valley of southern Tasmania, Australia.
Portland Cottage light structure formerly Portland Lighthouse sometimes Portland Point Lighthouse is situated on the summit of Portland Ridge, Clarendon, near the southernmost part of Jamaica.
Bagatao Island Lighthouse is a historic lighthouse located on Bagatao Island on the eastern side of the entrance to Sorsogon Bay, in the province of Sorsogon in the Philippines. The 29-foot (8.8 m) white cylindrical iron tower is situated on the rocky headland that forms the southern point in the western end of the Island, giving the total light elevation of 135 feet (41 m). The light not only marks the entrance to the bay, but also assists ships in navigating the bend around Ticao Island of Masbate province as they head to San Bernardino Strait and exit to the Pacific Ocean.
Flexicoil suspension is a type of secondary suspension for railway vehicles, typically having steel coil springs between the bogie trucks and chassis/frame of a passenger coach, goods freight wagon, or locomotive. Suspension systems using steel springs are more common than those with air springs, as steel springs are less costly to make, relatively wear resistant, and require less maintenance.
This information sets out some of the basic considerations taken into account by the lifting design engineer.
The Argyle Street Railway Substation is a heritage-listed railway electric substation located at Trinity Avenue, in the inner city Sydney suburb of Millers Point in the City of Sydney local government area of New South Wales, Australia. It was built in 1932 by Dorman, Long and Co. It is also known as Sydney Harbour Bridge Substation. The property is owned by RailCorp, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.
The Arrol Gantry was a large steel structure built by Sir William Arrol & Co. at the Harland and Wolff shipyard in Belfast, Northern Ireland. It was built to act as overhead cranes for the building of the three Olympic-class liners.
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