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Sea Cliff Bridge
The Sea Cliff Bridge, together with the adjoining Lawrence Hargrave Drive Bridge, are two road bridges that carry the scenic Lawrence Hargrave Drive across the rockface on the Illawarra escarpment, located in the northern Illawarra region of New South Wales, Australia. The balanced cantilever bridge, cantilever and incremental launching girder bridges link the coastal villages of Coalcliff and Clifton, New South Wales, Clifton and carry two lanes of traffic, and a pedestrian walkway. The Sea Cliff Bridge was named by Makenzie Russell, who at the time was an eleven-year-old student, following a naming competition opened to local primary school students. The Lawrence Hargrave Drive Bridge and the Lawrence Hargrave Drive are named in honour of Lawrence Hargrave, an Australian engineer, explorer, astronomer, inventor and aeronautical pioneer. History The Sea Cliff Bridge replaced a section of Lawrence Hargrave Drive that was permanently closed in August 2003 due to regular rock fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Hargrave Drive
Lawrence Hargrave Drive, part of the Grand Pacific Drive, is a scenic coastal road and popular tourist drive connecting the northernmost suburbs of Wollongong, New South Wales, Australia, to Wollongong, in the south, and Sydney, in the north across the scenic Sea Cliff Bridges. It was named after Lawrence Hargrave, an Australian aviation pioneer who lived nearby. Route The road begins at the Old Princes Highway, Helensburgh (Princes Motorway exit) and passes through Stanwell Tops to descend the steep Illawarra Escarpment at Bald Hill, the site of a spectacular lookout and hang gliding area. The road then passes south through Stanwell Park and Coalcliff to cross the Sea Cliff Bridge and adjoining Lawrence Hargrave Drive Bridge. Together, the Sea Cliff Bridge and Lawrence Hargrave Drive Bridge construction were completed in December 2005, replacing the former cliff-hugging route which was prone to rockfalls and consequent closures. Remnants of the former road can still be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridge
A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge, dating from the 13th century BC, in the Peloponnese is one of the oldest arch bridges in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boral
Boral Limited is an Australian building and construction materials company. It is owned by Seven Group Holdings. History Boral was founded by David Craig on 4 March 1946 as Bitumen and Oil Refineries (Australia) Limited with Ampol, Caltex having a 40% shareholding. In March 1947, it opened Matraville Refinery, Australia's first bitumen and oil refinery. In 1963, the company was renamed Boral Limited having been commonly referred to by its acronym since it commenced trading. In 1964, it purchased the Gas Supply Company with 28 coal gas companies in New South Wales, Queensland and Victoria, Australia, Victoria. In 1968 Boral sold a 50% stake in its refining business to TotalEnergies, Total, before selling it the remainder in January 1972. In 1969, it entered the building materials industry through a number of acquisitions. In 1979, Boral entered the United States market, purchasing a 55% shareholding in California Tile from Amalco. In February 1987 Boral purchased cement manufact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Span (architecture)
In engineering, span is the distance between two adjacent structural supports (e.g., two piers) of a structural member (e.g., a beam). Span is measured in the horizontal direction either between the faces of the supports (clear span) or between the centers of the bearing surfaces (effective span): A span can be closed by a solid beam or by a rope. The first kind is used for bridges, the second one for power lines, overhead telecommunication lines, some type of antennas or for aerial tramways. Span is a significant factor in finding the strength and size of a beam as it determines the maximum bending moment and deflection. The maximum bending moment M_ and deflection \delta_in the pictured beam is found using: :M_ = \frac :\delta_ = \frac = \frac where :q = Uniformly distributed load :L = Length of the beam between two supports (span) :E = Modulus of elasticity :I = Area moment of inertia The maximum bending moment and deflection occur midway between the two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prestressed Concrete
Prestressed concrete is a form of concrete used in construction. It is substantially prestressed (Compression (physics), compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. Post-tensioned concreted is "structural concrete in which internal stresses have been introduced to reduce potential tensile stresses in the concrete resulting from loads." It was patented by Eugène Freyssinet in 1928. This compression is produced by the Tension (physics), tensioning of high-strength ''tendons'' located within or adjacent to the concrete and is done to improve the performance of the concrete in service. Tendons may consist of single wires, multi-wire Wire rope, strands or threaded bars that are most commonly made from high-tensile steels, carbon fiber or aramid fiber. The essence of prestressed concrete is that once the initial compression has been applied, the resulting material has the characteristics of high-strength concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Box Girder
A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an i-beam, - or H-beam. Originally constructed of wrought iron joined by riveting, they are now made of rolled steel, rolled or welded steel, aluminium extrusions or prestressed concrete. Compared to an i-beam, -beam, the advantage of a box girder is that it better resists Torsion (mechanics), torsion. Having multiple vertical Web (other)#Engineering, webs, it can also carry more load than an of equal height (although it will use more material than a taller -beam of equivalent capacity). The distinction in naming between a box girder and a tubular girder is imprecise. Generally the term ''box'' girder is used, especially if it is rectangular in section. Where the girder carries its "content" ''inside'' the "box", such as the Britannia Bridge, it is termed a ''tubular'' girder. ''Tubular'' girder is also used if the girder is round or oval in cross-sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wollongong
Wollongong ( ; Dharawal: ''Woolyungah'') is a city located in the Illawarra region of New South Wales, Australia. The name is believed to originate from the Dharawal language, meaning either 'five islands/clouds', 'ground near water' or 'sound of the sea'. Wollongong lies on the narrow coastal strip between the Illawarra Escarpment and the Pacific Ocean, 85 kilometres (53 miles) south of Sydney. Wollongong had an estimated urban population of 302,739 at June 2018, making it the third-largest city in New South Wales after Sydney and Newcastle, New South Wales, Newcastle and the List of cities in Australia by population, tenth-largest city in Australia by population. The city's current List of mayors and lord mayors of Wollongong, Lord Mayor is Tania Brown who was elected in 2024. The Wollongong area extends from Helensburgh, New South Wales, Helensburgh in the north to Windang and Yallah in the south. Geologically, the city is located in the south-eastern part of the Sydney basin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helensburgh, New South Wales
Helensburgh is a small town, located south of Sydney and north of Wollongong and north and above the Illawarra escarpment and region. Helensburgh is in the Wollongong City Council Local government in Australia, local government area. It is surrounded by bushland reserves adjacent to the southern end of the Royal National Park and Garawarra State Conservation Area and the Woronora Dam, Woronora reservoir water catchment is to its west. Geography The town is on the Woronora Plateau. To the southeast, it is separated from Otford in the Hacking River valley below by a high ridge but linked to it by the South Coast Railway and Otford Road. It is separated from Waterfall, New South Wales, Waterfall by Garawarra State Conservation Area and the former Garawarra sanitorium but linked to it by the South Coast Railway with tight bends descending from the line's highest point at Waterfall to Helensburgh Station. To the north of Helensburgh and east of the railway line are the two segments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otford, New South Wales
Otford is a village in the Otford Valley located 55 km south of the Sydney and 30 km north of the Wollongong CBD in New South Wales, Australia. Otford is within the local government area of the City of Wollongong. Location Otford is situated in the Otford Valley, north of Undola Ridge, Stanwell Park and Stanwell Tops. To the east of the valley is the coastal ridge and small community of Bulgo, also the name of a hill in the area and the former name of Otford. To the west, on the plateau, is the township of Helensburgh. To the north is the locality of Lilyvale and the Royal National Park. The town is on the southern tip of the Royal National Park and features many native plants in its bushland like the Dendrobium Lilly. The trees of the bushland are mostly of the dry Eucalypt variety but the valley slopes support tall open Eucalypt forest and rainforest along the creek and in gullies. The landscape is mostly hillside, and the Hacking River runs through the valley to the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanwell Park, New South Wales
Stanwell Park is a coastal village and northern suburb of Wollongong, New South Wales, Wollongong, New South Wales, Australia. It is the northernmost point of the Illawarra coastal strip and lies south of Sydney's Royal National Park. It is situated in a small valley between Bald Hill (Australia), Bald Hill to the north, Stanwell Tops to the west and Mount Mitchell to the south. It has two lagoons from the village's two creeks, Stanwell and Hargrave Creeks, and a beach running between headlands. Stanwell Park and the surrounding suburbs are colloquially referred to by its postcode 2508. History Stanwell Park was the name given to the farm established on the grant given to Matthew John Gibbons in 1824. He was given most of the area called ''Little Bulli'' which included present-day Stanwell Park and Coalcliff. The whole of Northern Illawarra went under the Aboriginal name Bulli. Bulli, New South Wales, Bulli remains the name of an Illawarra suburb further south of Stanwell Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Hargrave
Lawrence Hargrave, MRAeS, (29 January 18506 July 1915) was an Australian engineer, explorer, astronomer, inventor and aeronautical pioneer. He was perhaps best known for inventing the box kite, which was quickly adopted by other aircraft designers and subsequently formed the aerodynamic basis of early biplanes. Biography Lawrence Hargrave was born in Greenwich, England, the second son of John Fletcher Hargrave (later Attorney-General of NSW), and was educated at Queen Elizabeth's Grammar School, Kirkby Lonsdale, Westmorland, where there is now a Design and Technology building named in his honour. He immigrated to Australia at fifteen years of age with his family, arriving in Sydney on 5 November 1865 on the ''La Hogue''. He accepted a place on the ''Ellesmere'' and circumnavigated Australia. Although he had shown ability in mathematics at his English school he failed the matriculation examination and in 1867 took an engineering apprenticeship with the Australasian Ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedestrian
A pedestrian is a person traveling on foot, by wheelchair or with other mobility aids. Streets and roads often have a designated footpath for pedestrian traffic, called the '' sidewalk'' in North American English, the ''pavement'' in British English, and the ''footpath'' in Australian and New Zealand English. There are also footpaths not associated with thoroughfares; these include rural paths and urban short cuts. Historically, walking has been the main way people get around. In the early use of the word, ''pedestrian'' meant a "professional walker", or somebody who held a record for speed or endurance. With the advent of cars, it started to be used as an opposite: somebody who is not riding or driving. As walking is a healthy and sustainable mode of transport, there are efforts to make cities more walkable. For instance, by creating wider sidewalks, a pedestrian network, or restricting motor vehicles in city centres. Pedestrians are vulnerable and can be injured, for e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
