1.
Geographic coordinate system
–
A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
Bloor Street
–
Bloor Street is a major east–west residential and commercial thoroughfare in Toronto, Ontario, Canada. Bloor Street runs from the Prince Edward Viaduct, which spans the Don River Valley, east of the viaduct, Danforth Avenue continues along the same right-of-way. The street, approximately 25 kilometres long, contains a significant cross-sample of Torontos ethnic communities and it is also home to Torontos famous shopping street, the Mink Mile. The street is named after Joseph Bloore, a brewer and land speculator of this area in the 19th century who founded the Village of Yorkville in 1830 and he is buried at Necropolis Cemetery on Bayview Avenue and Rosedale Valley Road. A portion of Line 2 of the Bloor-Danforth subway line runs along Bloor from Kipling Avenue to Yonge Street, and then continues east along Danforth Avenue. Originally surveyed as the first concession road north of the baseline, it was known by names, including the Tollgate Road, then St. Pauls Road. Although Bloore had an e at the end of his surname, Bloor Street was never spelled with it, the idea of installing bicycle lanes on Bloor had been debated since at least the early 1970s. On 4 May 2016, city council voted 38-3 to implement physically separated bike lanes along a 2. 6-km stretch of the street. Mayor John Tory stated, in support of the project, that if council sought to make Toronto a 21st century city, Bloor street begins at the eastern edge of the Prince Edward Viaduct, which passes over the ravine holding the Don River. The street continues through to the Rosedale Ravine, marking the border of the affluent community of Rosedale. West of Parliament Street, the passes just to the north of the large St. James Town housing project. On the northern side of section of Bloor are the forested slopes of the Rosedale Ravine. Between Sherbourne and Church Streets the street is lined by large office towers and this area has long been the centre of the insurance industry in Canada. West of Church the street becomes commercial and is an important shopping district. In downtown, especially around the intersection with Bay Street, Bloor is one of the most exclusive stretches of real estate in Canada. Rents on the upscale Bloor Street have doubled in 4 years, ranking as the 22nd most expensive location in the world in 2006. Nationally, Vancouvers upscale Robson Street tied with Bloor Street West as the most expensive street in Canada, under the intersection of Yonge and Bloor Streets is the Bloor-Yonge subway station, which is the busiest in the city, serving approximately 368,800 people a day. Above ground, the intersection encompasses commercial stores and condominiums and it generally retains its commercial character, and serves as the main shopping area for most of these communities
3.
Danforth Avenue
–
Danforth Avenue and Danforth Road are two historically-related arterial streets in Toronto, Ontario, Canada. Danforth Road splits off the Avenue west of Warden Avenue, and runs diagonally northeast until south of Lawrence Avenue, where it continues as McCowan Road. Line 2 Bloor–Danforth of the Toronto subway runs just north of Danforth Avenue from the Don River as far as Main Street Station, Danforth Road was named for contractor Asa Danforth Jr. who built portions of what would become Queen Street and Kingston Road. He started work in 1799 on Danforths Road as a route from Scarborough to the Trent River. That road was completed 1801 but soon fell into disrepair and was replaced by the 1817 Kingston Road stagecoach route. In Scarborough, Danforth Road connects Danforth Avenue with McCowan Road and it is possible, therefore, to stand at the intersection of Danforth and Danforth, i. e. Danforth Avenue and Danforth Road. Local references, therefore, are careful to note whether it is the Avenue or the Road being referred to—although the term the Danforth always refers to Danforth Avenue, and never to Danforth Road. Warden Avenue and Birchmount Road in Scarborough are two of the four routes to intersect with both Danforth Avenue and Danforth Road, with other routes, the distinction is unnecessary, for example, Victoria Park and Danforth means Danforth Avenue, while Kennedy and Danforth means Danforth Road. Spans the Don River valley, the Don Valley Parkway and Bayview Avenue via the Prince Edward Viaduct, west of that bridge, the street continues as Bloor Street. The Bloor–Danforth subway line runs parallel to most of the roads route, the subway follows Danforth from the Viaduct west of Broadview Station to Main Street Station. Danforth GO Station, just off Main Street, takes its name from the avenue, Danforth is served by Toronto Transit Commission buses only east of Main Street Station. Routes 16 McCowan and 113 Danforth serve the road during the day and 302 Danforth-McCowan run during the night, Danforth Avenue was formerly designated as Ontario Highway 5 from the Don River east to Kingston Road. Like many urban stretches of roadway, it was formally decommissioned as a connecting link on January 1,1998. Danforth is home to Torontos Greek community, also known as Greektown, shoppers World Danforth, a World War II munitions plant. It became a Ford plant again after the war, until Ford moved to Oakville in 1953, then an American Motors plant, producing Ramblers, Nashes and Hudsons, the buildings were retained and were converted to a shopping mall in 1962. Scarborough War Memorial, at the end of Danforth Avenue at Kingston Road. Variety Village, a facility for adults and youths with disabilities. Birchmount Stadium and Scarborough Arena Gardens, bills House of Wood - Largest wooden shoe shop in Canada
4.
Toronto subway
–
The Toronto subway is a rapid transit system in Toronto, Ontario, Canada, operated by the Toronto Transit Commission. It is a system consisting of three heavy rail lines operating predominantly underground and one elevated light metro line, collectively encompassing 69 stations and 68.3 kilometres of track. It accommodated an average of 1,066,100 passenger trips each weekday during the quarter of 2015. There are 4 rapid transit lines in Toronto plus another under construction, Line 1 Yonge–University, is the longest and busiest rapid transit line in the system. It opened as the Yonge subway in 1954 with a length of 7.4 kilometres, Today, the line is U-shaped having two northern terminals looping on its southern end via Union Station. An 8. 6-kilometre, six-station extension of Line 1 north to Vaughan is under construction, Line 2 Bloor–Danforth, opened in 1966, runs parallel to Bloor Street and Danforth Avenue between Kipling Station in Etobicoke and Kennedy Station in Scarborough. There is a plan to extend Line 2 eastwards from Kennedy Station to Scarborough Town Centre, Line 3 Scarborough is an above-ground medium-capacity rail line serving the citys eponymous suburban district. The line runs from Kennedy Station to McCowan Station passing Scarborough Town Centre and this is the only rapid transit line in Toronto to use Intermediate Capacity Transit System technology. There is a plan to close and dismantle Line 3 after Line 2 is extended to Scarborough Town Centre, Line 5 Eglinton is a 19-kilometre light rail line under construction scheduled to open in 2021. The line will have 25 stations of which 15 will be underground, here is a list of line, extension and station openings on the Toronto subway system. Canadas first subway, the Yonge subway, opened in 1954 with a length of 7.4 kilometres, the line ran under or parallel to Yonge Street between Eglinton Avenue and Union Station. It replaced the Yonge streetcar line, Canadas first streetcar line, in 1963, the line was extended under University Avenue north to Bloor Street to connect with the Bloor-Danforth subway at the double-deck St. George Station. In 1974, the line was extended from Eglinton Station north to Finch Station, the Spadina segment of the line was constructed north from St. George Station initially to Wilson Station in 1978, and eventually to Downsview Station in 1996. Part of the Spadina segment runs in the median of an expressway, four decades of extensions gave the line a U-shaped route running from its two northern terminals and looping on its southern end at Union Station. As of 1996, the line was 30.2 kilometres long, opened in 1966, the Bloor–Danforth subway runs east-west under or near Bloor Street and Danforth Avenue. It replaced the Bloor streetcar line, initially, the subway line ran between Keele Station to Woodbine Station. In 1968, the line was extended west to Islington Station and east to Warden Station, opened in 1985, the Scarborough RT is a light metro line running from Kennedy Station to McCowan station. The TTC started to construct the line to use Canadian Light Rail Vehicles and this line was never extended, and the current plan is to close and dismantle the line, replacing it with an extension of Line 2 to Scarborough Town Centre
5.
Don River (Ontario)
–
The Don River is a watercourse in southern Ontario, that empties into Lake Ontario, at Toronto Harbour. Its mouth was just east of the grid of the town of York, Upper Canada. Of the various watercourses that drained Toronto, the Don, the Humber River, the Don is formed from two rivers, the East and West Branches, that meet about 7 kilometres north of Lake Ontario while flowing southward into the lake. The area below the confluence is known as the lower Don, the Don is also joined at the confluence by a third major branch, Taylor-Massey Creek. The Toronto and Region Conservation Authority is responsible for managing the river, humans first arrived in the Don River area approximately 12,500 years BP, most likely as nomadic hunters. While there is archaeological evidence in the Don valley itself. The most significant recorded find is known as the Withrow Site and it was discovered in 1886 during road building just east of Riverdale Park. It contained human remains and other dating back to about 5000 years BP. It is unclear whether the Don River had a native Canadian name, in 1788, Alexander Aitkin, an English surveyor who worked in southern Ontario, referred to the Don River as Ne cheng qua kekonk. Elizabeth Simcoe, wife of Lieutenant Governor John Graves Simcoe, reported in her diary that another name used was Wonscotanach and this is an Anishnaabe phrase meaning the river coming from the back burnt grounds which could refer to an earlier forest fire in the poplar plains to the north. The name Don River was given by Lt. Gov. Simcoe because the wide valley reminded him of the River Don in Yorkshire, after the founding of York in 1793, several mills were constructed along the lower Don. One of the first was at Todmorden Mills and these mills initially turned out lumber, flour and paper products. By the 1850s, there were more than 50 mills along the Don, the Lower Don was becoming an industrial setting. Petroleum storage facilities, poultry and pork processing plants were constructed along the banks of the Don, in 1879, the Don Valley Brick Works opened. Polluted effluent from factories and the growing city nearby was turning the Don. In the 1880s, the part of the Don south of the former Winchester St. bridge was straightened and placed in a channel to create additional harbour space. Known as The Don Improvement Project, the river was also supposed to divert the polluted waters into the Ashbridges Bay marsh. This proved unsuccessful so the mouth was turned 90 degrees west where it empties into the inner harbour and this short extension of the harbour is known as the Keating Channel
6.
Toronto
–
Toronto is the most populous city in Canada and the provincial capital of Ontario. With a population of 2,731,571, it is the fourth most populous city in North America after Mexico City, New York City, and Los Angeles. A global city, Toronto is a centre of business, finance, arts, and culture. Aboriginal peoples have inhabited the area now known as Toronto for thousands of years, the city itself is situated on the southern terminus of an ancient Aboriginal trail leading north to Lake Simcoe, used by the Wyandot, Iroquois, and the Mississauga. Permanent European settlement began in the 1790s, after the broadly disputed Toronto Purchase of 1787, the British established the town of York, and later designated it as the capital of Upper Canada. During the War of 1812, the town was the site of the Battle of York, York was renamed and incorporated as the city of Toronto in 1834, and became the capital of the province of Ontario during the Canadian Confederation in 1867. The city proper has since expanded past its original borders through amalgamation with surrounding municipalities at various times in its history to its current area of 630.2 km2. While the majority of Torontonians speak English as their primary language, Toronto is a prominent centre for music, theatre, motion picture production, and television production, and is home to the headquarters of Canadas major national broadcast networks and media outlets. Toronto is known for its skyscrapers and high-rise buildings, in particular the tallest free-standing structure in the Western Hemisphere. The name Toronto is likely derived from the Iroquois word tkaronto and this refers to the northern end of what is now Lake Simcoe, where the Huron had planted tree saplings to corral fish. A portage route from Lake Ontario to Lake Huron running through this point, in the 1660s, the Iroquois established two villages within what is today Toronto, Ganatsekwyagon on the banks of the Rouge River and Teiaiagonon the banks of the Humber River. By 1701, the Mississauga had displaced the Iroquois, who abandoned the Toronto area at the end of the Beaver Wars, French traders founded Fort Rouillé on the current Exhibition grounds in 1750, but abandoned it in 1759. During the American Revolutionary War, the region saw an influx of British settlers as United Empire Loyalists fled for the British-controlled lands north of Lake Ontario, the new province of Upper Canada was in the process of creation and needed a capital. Dorchester intended the location to be named Toronto, in 1793, Governor John Graves Simcoe established the town of York on the Toronto Purchase lands, instead naming it after Prince Frederick, Duke of York and Albany. Simcoe decided to move the Upper Canada capital from Newark to York, the York garrison was constructed at the entrance of the towns natural harbour, sheltered by a long sandbar peninsula. The towns settlement formed at the end of the harbour behind the peninsula, near the present-day intersection of Parliament Street. In 1813, as part of the War of 1812, the Battle of York ended in the towns capture, the surrender of the town was negotiated by John Strachan. US soldiers destroyed much of the garrison and set fire to the parliament buildings during their five-day occupation, the sacking of York was a primary motivation for the Burning of Washington by British troops later in the war
7.
Toronto Transit Commission
–
The Toronto Transit Commission is a public transport agency that operates bus, rapid transit, streetcar, and paratransit services in Toronto, Ontario, Canada. Established in 1921, the TTC comprises four rapid transit lines with 69 stations, over 149 bus routes, and 10 streetcar lines. In 4th quarter 2012, the daily ridership was 2.76 million passengers,1,425,300 by bus,271,100 by streetcar,46,400 by intermediate rail. The TTC also operates paratransit service for the elderly and disabled. The TTC is the third most heavily used urban mass transit system in North America, after the New York City Transit Authority, public transit in Toronto started in 1849 with a privately operated transit service. In later years, the city operated some routes, but in 1921 assumed control over all routes, during this period, streetcars provided the bulk of the service. In 1954, the TTC adopted its present name, opened the first subway line, the system has evolved to feature a wide network of surface routes with the subway lines as the backbone. On February 17,2008, the TTC made many improvements, finally reversing more than a decade of service reductions. The Gloucester subway cars, the first version of TTC subway cars, another common slogan is The Better Way. The TTC has recovered about 70% of its costs from the fare box in recent years. From its creation in 1921 until 1971, the TTC was self-supporting both for capital and operations, deficits and subsidies soared throughout the 1970s and 1980s, followed by service cuts and a period of ridership decline in the 1990s, partly attributable to recession. Since then, the TTC has consistently been in financial difficulties, Service cuts were averted in 2007, though, when the Toronto City Council voted to introduce new taxes to help pay for city services, including the TTC. As a result, the TTC became the largest transit operator in Anglo-America not to receive provincial/state subsidies, the TTC has received federal funding for capital projects from as early as 2009. The TTC is also considered one of the costliest transit systems per fare price in North America, for the 2011 operating year, the TTC had a projected operating budget of $1.45 billion. Revenue from fares covered approximately 70% of the budget, whereas the remaining 30% originated from the city, in 2009 through 2011, provincial and federal subsidies amounted to 0% of the budget. In contrast to this, STM Montreal receives approximately 10% of its budget from the provincial government. The fairness of preferentially subsidizing transit in specific Canadian cities has been questioned by citizens, the TTC operated the ferry service to the Toronto Islands from 1927 to 1962, when it was transferred to the Metro Parks and Culture department. Gray Coach Lines was a suburban and regional intercity bus operator founded in 1927 by the TTC, Gray Coach used interurban coaches to link Toronto to points throughout southern Ontario
8.
Arch bridge
–
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side, a viaduct may be made from a series of arches, although other more economical structures are typically used today. Possibly the oldest existing bridge is the Mycenaean Arkadiko bridge in Greece from about 1300 BC. The stone corbel arch bridge is used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch, a more complete survey by the Italian scholar Vittorio Galliazzo found 931 Roman bridges, mostly of stone, in as many as 26 different countries. Roman arch bridges were usually semicircular, although a number were segmental arch bridges, generally, Roman bridges featured wedge-shaped primary arch stones of the same in size and shape. The Romans built both single spans and lengthy multiple arch aqueducts, such as the Pont du Gard and Segovia Aqueduct. Their bridges featured from an early time onwards flood openings in the piers, e. g. in the Pons Fabricius in Rome, Roman engineers were the first and until the industrial revolution the only ones to construct bridges with concrete, which they called Opus caementicium. The outside was covered with brick or ashlar, as in the Alcántara bridge. The Romans also introduced segmental arch bridges into bridge construction, trajans bridge over the Danube featured open-spandrel segmental arches made of wood. This was to be the longest arch bridge for a thousand years both in terms of overall and individual span length, while the longest extant Roman bridge is the 790 m long Puente Romano at Mérida. The late Roman Karamagara Bridge in Cappadocia may represent the earliest surviving bridge featuring a pointed arch, in medieval Europe, bridge builders improved on the Roman structures by using narrower piers, thinner arch barrels and lower span-rise ratios on bridges. Gothic pointed arches were introduced, reducing lateral thrust. The 14th century in particular saw bridge building reaching new heights, the bridge at Trezzo sullAdda, destroyed in the 15th century, even featured a span length of 72 m, not matched until 1796. Constructions such as the acclaimed Florentine segmental arch bridge Ponte Vecchio combined sound engineering with aesthetical appeal, the three elegant arches of the Renaissance Ponte Santa Trinita constitute the oldest elliptic arch bridge worldwide. In China, the oldest existing bridge is the Zhaozhou Bridge of 605 AD. The Zhaozhou Bridge, with a length of 167 feet and span of 123 feet, is the worlds first wholly stone open-spandrel segmental arch bridge, Bridges with perforated spandrels can be found worldwide, such as in China
of the Toronto subway
.jpg)
