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Boothtown Aqueduct
The Boothtown Aqueduct is a heritage-listed 19th-century water bridge in Greystanes, Sydney, New South Wales, Australia. Established in 1888, the aqueduct was built to cross a valley to carry water from Prospect Reservoir to residents of Greater Western Sydney. Part of the Lower Prospect Canal Reserve, the aqueduct was the longest continuous concrete work of its kind in Australia in the late 19th century and early 20th century. It was listed in November 1991 in the New South Wales Heritage Database. The aqueduct was constructed as a part of the Upper Nepean Scheme to convey water from the new Prospect reservoir to the new Potts Hill reservoir. History In 1892, after the parapet walls of the aqueduct fell into the creek below it, the walls were reconstructed and restrengthened with a concrete lining and tie rods. Due to its failings to have its capacity inflated, the aqueduct was bypassed in 1907 with the establishment of the inverted syphon. The aqueduct was subject to demol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aqueduct (bridge)
Aqueducts (or water bridges) are bridges constructed to convey watercourses across gaps such as valleys or ravines. The term ''aqueduct'' may also be used to refer to the Aqueduct (water supply), entire watercourse, as well as the bridge. Large navigable aqueducts are used as transport links for boats or ships. Aqueducts must span a crossing at the same level as the watercourses on each end. The word is derived from the Latin language, Latin ' ("water") and ' ("to lead"), therefore meaning "to lead water". A modern version of an aqueduct is a pipeline bridge. They may take the form of tunnels, networks of surface channels and canals, covered clay pipes or monumental bridges. Ancient bridges for water Although particularly associated with the Roman aqueduct, Romans, aqueducts were likely first used by the Minoans around 2000 BCE. The Minoans had developed what was then an extremely advanced irrigation system, including several aqueducts. In the seventh century BCE, the Neo-Ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transit Systems Sydney
Transit Systems NSW, previously known as Transit Systems Sydney, is a bus operator in Sydney, New South Wales, Australia. It is a subsidiary of Transit Systems. History In November 2012, Transit Systems was awarded a contract by Transport for NSW to operate region 3 bus services in Western Sydney, taking over services operated by Busabout, Hopkinsons, Metro-link and Westbus. Transit Systems also took over route T80 on the Liverpool-Parramatta T-way from Western Sydney Buses. Operations commenced on 13 October 2013. On 1 July 2018, Transit Systems took over the operation of region 6 from State Transit on an eight-year contract operating services in the Canterbury-Bankstown, Eastern Suburbs, Inner West, North Shore and St George regions. In December 2022, after a tendering process, Transit Systems successfully retained region 3 and was additionally awarded the services in region 13, which will be consolidated into region 3. The new contract for the combined region will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilaster
In classical architecture Classical architecture usually denotes architecture which is more or less consciously derived from the principles of Greek and Roman architecture of classical antiquity, or sometimes even more specifically, from the works of the Roman architect V ..., a pilaster is an :Architectural elements, architectural element used to give the appearance of a supporting column and to articulate an extent of wall, with only an ornamental function. It consists of a flat surface raised from the main wall surface, usually treated as though it were a column, with a Capital (architecture), capital at the top, plinth (base) at the bottom, and the various other column elements. In contrast to a pilaster, an engaged column or buttress can support the structure of a wall and roof above. In human anatomy, a pilaster is a ridge that extends vertically across the femur, which is unique to modern humans. Its structural function is unclear. Definition In discussing Leon Battis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brickwork
Brickwork is masonry produced by a bricklayer, using bricks and mortar. Typically, rows of bricks called '' courses'' are laid on top of one another to build up a structure such as a brick wall. Bricks may be differentiated from blocks by size. For example, in the UK a brick is defined as a unit having dimensions less than and a block is defined as a unit having one or more dimensions greater than the largest possible brick. Brick is a popular medium for constructing buildings, and examples of brickwork are found through history as far back as the Bronze Age. The fired-brick faces of the ziggurat of ancient Dur-Kurigalzu in Iraq date from around 1400 BC, and the brick buildings of ancient Mohenjo-daro in Pakistan were built around 2600 BC. Much older examples of brickwork made with dried (but not fired) bricks may be found in such ancient locations as Jericho in Palestine, Çatal Höyük in Anatolia, and Mehrgarh in Pakistan. These structures have survived from the Stone Ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminum combined. Globally, the ready-mix concrete industry, the largest segment of the concrete market, is projected to exceed $600 billion in revenue by 2025. This widespread use results in a number of environmental impacts. Most notably, the production process for cement produces large volumes of greenhouse gas emissions, leading to net 8% of global emissions. Other environmental concerns include widespread illegal sand mining, impacts on the surrounding environment such as increased surface runoff or urban heat island effect, and potential public health implications from toxic ingredients. Significant research and development is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castellation
A battlement in defensive architecture, such as that of city walls or castles, comprises a parapet (i.e., a defensive low wall between chest-height and head-height), in which gaps or indentations, which are often rectangular, occur at intervals to allow for the launch of arrows or other projectiles from within the defences. These gaps are termed " crenels" (also known as ''carnels'', or ''embrasures''), and a wall or building with them is called crenellated; alternative (older) terms are castellated and embattled. The act of adding crenels to a previously unbroken parapet is termed crenellation. The function of battlements in war is to protect the defenders by giving them something to hide behind, from which they can pop out to launch their own missiles. A defensive building might be designed and built with battlements, or a manor house might be fortified by adding battlements, where no parapet previously existed, or cutting crenellations into its existing parapet wall. A d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vandalism
Vandalism is the action involving deliberate destruction of or damage to public or private property. The term includes property damage, such as graffiti and defacement directed towards any property without permission of the owner. The term finds its roots in an Enlightenment view that the Germanic Vandals were a uniquely destructive people. Etymology The Vandals, an ancient Germanic people, are associated with senseless destruction as a result of their sack of Rome under King Genseric in 455. During the Enlightenment, Rome was idealized, while the Goths and Vandals were blamed for its destruction. The Vandals may not have been any more destructive than other invaders of ancient times, but they did inspire English poet John Dryden to write, ''Till Goths, and Vandals, a rude Northern race, Did all the matchless Monuments deface'' (1694). However, the Vandals did intentionally damage statues, which may be why their name is associated with the vandalism of art. The term ''Va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weathering
Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms. Weathering occurs ''in situ'' (on site, with little or no movement), and so is distinct from erosion, which involves the transport of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity. Weathering processes are divided into ''physical'' and ''chemical weathering''. Physical weathering involves the breakdown of rocks and soils through the mechanical effects of heat, water, ice, or other agents. Chemical weathering involves the chemical reaction of water, atmospheric gases, and biologically produced chemicals with rocks and soils. Water is the principal agent behind both physical and chemical weathering, though atmospheric oxygen and carbon dioxide and the activities of biological organisms are also important. Chemical weathering by biological action is also known as biological wea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Booth (Australian Politician)
John Booth (27 February 1822 – 11 April 1898) was an English-born Australian politician. He was born in Bermondsey in London; his father, Henry Booth, was a corn-factor. He went to sea in 1833, settled in Sydney in 1839 and learned shipbuilding on Brisbane Water, before moving to Balmain around 1854. In 1850 he married Susannah Wetherall, with whom he had eleven children. He was Balmain's first mayor in 1867 and by 1870 owned successful sawmills at Balmain and on the Manning River. He went to England in 1870, and in 1872 was elected to the New South Wales Legislative Assembly for West Sydney. Defeated in 1874, he was elected for East Macquarie later in the election period in 1875. In 1874 his mills were burned down, and despite only having partial insurance he rebuilt them. He was defeated running for re-election in 1877. Booth died at Bundanoon Bundanoon is a town in the Southern Highlands of New South Wales, Australia, in Wingecarribee Shire, on Gandangarra an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer (architecture)
A springer is an architectural term for the lowest voussoir on each side of an arch. Since it is the bottom-most element of the arch, it is where the arch support terminates at the respond. It rests on the impost or pier of the arch, that is, the topmost part of the abutment An abutment is the substructure at the ends of a bridge span or dam supporting its superstructure. Single-span bridges have abutments at each end which provide vertical and lateral support for the span, as well as acting as retaining walls ..., from which the arch arises. Notes Arches and vaults {{architecturalelement-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brick
A brick is a type of block used to build walls, pavements and other elements in masonry construction. Properly, the term ''brick'' denotes a block composed of dried clay, but is now also used informally to denote other chemically cured construction blocks. Bricks can be joined using mortar, adhesives or by interlocking them. Bricks are usually produced at brickworks in numerous classes, types, materials, and sizes which vary with region and time period, and are produced in bulk quantities. ''Block'' is a similar term referring to a rectangular building unit composed of similar materials, but is usually larger than a brick. Lightweight bricks (also called lightweight blocks) are made from expanded clay aggregate. Fired bricks are one of the longest-lasting and strongest building materials, sometimes referred to as artificial stone, and have been used since circa 4000 BC. Air-dried bricks, also known as mud-bricks, have a history older than fired bricks, and have an additi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
