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Denison Bridge
The Denison Bridge is a heritage-listed footbridge over the Macquarie River in Bathurst, New South Wales, Australia. It is the fourth oldest metal truss bridge existing in Australia. The bridge, completed in 1870, replaced an earlier bridge that was built in 1856 and destroyed in 1867 floods. It was designed by Gustavus Alphonse Morrell and built from 1869 to 1870 by P. N. Russell & Co. The bridge structure, except for the deck, is original and in excellent condition and for over 120 years the bridge carried the Great Western Highway over the Macquarie River. In the early 1990s a realignment of the Great Western Highway resulted in the Evans Bridge replacing the Denison Bridge, with the latter converted to pedestrian traffic only. It was added to the New South Wales State Heritage Register on 1 August 2003, having earlier been listed on the now-defunct Register of the National Estate in 1978. Historical details Despite the growing importance of Bathurst as the principal urba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Denison
Sir William Thomas Denison (3 May 1804 – 19 January 1871) was Lieutenant Governor of Van Diemen's Land from 1847 to 1855, Governor of New South Wales from 1855 to 1861, and Governor of Madras from 1861 to 1866. According to Percival Serle, Denison was a man of high character and a good administrator. In his early days in Tasmania he spoke too frankly about the colonists in communications which he regarded as confidential, and this accentuated the feeling against him as a representative of the colonial office during the anti-transportation and responsible government movements. He showed great interest in the life of the colony, and helped to foster education, science and trade, during the period when Tasmania was developing into a prosperous colony. In New South Wales his task was easier, and he had no difficulty in coping adequately with the problems that arose during the early days of responsible government in Australia. Early life Denison was the third son of John De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrmont, New South Wales
Pyrmont is an inner-city suburb of Sydney, in the state of New South Wales, Australia 2 kilometres south-west of the Sydney central business district in the local government area of the City of Sydney. It is also part of the Darling Harbour region. As of 2011, it is Australia's most densely populated suburb. Pyrmont was once a vital component of Sydney's industrial waterfront, with wharves, shipbuilding yards, factories and woolstores. As industry moved out, the population and the area declined. In recent years it has experienced redevelopment with an influx of residents and office workers. History Pyrmont contained a mineral spring of cold water bubbling out of a rock and was thus named for a similar natural spring in Bad Pyrmont, close to Hanover, Germany. Thomas Jones was granted of land on the peninsula in 1795. Land was sold to Obadiah Ikin in 1796 for 10 pounds, which he then sold to Captain John Macarthur in 1799 for a gallon of rum. Pyrmont was the site of quarries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empire (newspaper)
The ''Empire'' was a newspaper published in Sydney, Australia. It was published from 28 December 1850 to 14 February 1875, except for the period from 28 August 1858 to 23 May 1859, when publication was suspended. It was later absorbed by '' The Evening News''. History Henry Parkes founded the ''Empire'' and was its editor/proprietor until the business failed in August 1858. He made it "a newspaper destined to be the chief organ of mid-century liberalism and to serve as the rallying and reconciliation point for the sharpest radical and liberal minds of the day". The paper was bought by Samuel Bennett and William Hanson and resumed publication in May 1859 with the promise that "The Empire … will continue under the new management to advocate the same great principles by which it has hitherto been distinguished". In 1875 labour difficulties forced Bennett to merge the ''Empire'' with another of his papers, the ''Evening News''. ''The Evening News'' continued to be published unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Sydney Morning Herald
''The Sydney Morning Herald'' (''SMH'') is a daily compact newspaper published in Sydney, New South Wales, Australia, and owned by Nine. Founded in 1831 as the ''Sydney Herald'', the ''Herald'' is the oldest continuously published newspaper in Australia and "the most widely-read masthead in the country." The newspaper is published in compact print form from Monday to Saturday as ''The Sydney Morning Herald'' and on Sunday as its sister newspaper, '' The Sun-Herald'' and digitally as an online site and app, seven days a week. It is considered a newspaper of record for Australia. The print edition of ''The Sydney Morning Herald'' is available for purchase from many retail outlets throughout the Sydney metropolitan area, most parts of regional New South Wales, the Australian Capital Territory and South East Queensland. Overview ''The Sydney Morning Herald'' publishes a variety of supplements, including the magazines ''Good Weekend'' (included in the Saturday edition of ''Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow String Truss
A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch(es) support. The arch(es) have strengthened chord(s) that run to a strong part of the deck structure or to independent tie-rods below the arch ends. Description Thrusts downwards on a tied-arch bridge deck are translated, as tension, by vertical ties between the deck and the arch, tending to flatten it and thereby to push its tips outward into the abutments, like for other arch bridges. However, in a tied-arch or bowstring bridge, these movements are restrained not by the abutments but by the strengthened chord, which ties these tips together, taking the thrusts as tension, rather like the string of a bow that is being flattened. Therefore, the design is also called a bowstring-arch or bowstring-girder bridge. The elimination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pier (architecture)
A pier, in architecture, is an upright support for a structure or superstructure such as an arch or bridge. Sections of structural walls between openings (bays) can function as piers. External or free-standing walls may have piers at the ends or on corners. Description The simplest cross section of the pier is square, or rectangular, but other shapes are also common. In medieval architecture, massive circular supports called drum piers, cruciform (cross-shaped) piers, and compound piers are common architectural elements. Columns are a similar upright support, but stand on a round base. In buildings with a sequence of bays between piers, each opening (window or door) between two piers is considered a single bay. Bridge piers Single-span bridges have abutments at each end that support the weight of the bridge and serve as retaining walls to resist lateral movement of the earthen fill of the bridge approach. Multi-span bridges require piers to support the ends of spans betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trusses
A truss is an assembly of ''members'' such as beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as ''nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tensile or compressive. For straight members, moments (torques) are explicitly excluded because, and only because, all the joints in a truss are treated as revolutes, as is necessary for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Span (architecture)
Span is the distance between two intermediate supports for a structure, e.g. a beam (structure), beam or a bridge. 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 Antenna (radio), antennas or for aerial tramways. The span is a significant factor in finding the strength and size of a beam as it determines the maximum bending moment and Deflection (engineering), 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 Note that the maximum bending moment and deflection occur midway between the two supports. From this it follows that if the span is doubled, the maximum moment (and with it the tensile stress, stress) will quadruple, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss
A truss is an assembly of ''members'' such as beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as ''nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tensile or compressive. For straight members, moments (torques) are explicitly excluded because, and only because, all the joints in a truss are treated as revolutes, as is necessary for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt Truss
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently. Design The nature of a truss allows the analysis of its structure using a few assumptions and the application of Newton's laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the straight components meet, meaning that taken alone, every joint on the structure is functionally considered to be a flexible joint as opposed to a rigid joint with strength to maintain its own shape, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prince Alfred Bridge
The Prince Alfred Bridge is a wrought iron truss and timber beam partially-disused road bridge over the Murrumbidgee River and its floodplain at Middleton Drive, Gundagai, Cootamundra-Gundagai Regional Council, New South Wales, Australia. The heritage-listed road bridge was designed by William Christopher Bennett and built from 1864 to 1867 by Francis Bell. It is also known as Prince Alfred Bridge - Iron Road Bridge and Iron Bridge over Murrumbidgee River at Gundagai. The iron bridge is owned by Transport for NSW and the timber viaduct is owned by Crown Lands. The bridge was added to the New South Wales State Heritage Register on 5 July 2019 and on the (now defunct) Register of the National Estate on 21 March 1978. In 1977, the Sheahan Bridge replaced the Prince Alfred Bridge as the Hume Highway crossing of the Murrumbidgee River. The Sheahan Bridge was duplicated in 2010. Since the opening of the Sheahan Bridge, the Prince Alfred Bridge has served local traffic only. The ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag Inclusion (mineral), inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to structural failure, failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welding, forge welded, but is more difficult to welding, weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is Carbon steel#Mild or low-carbon steel, mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
