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High Bridge (Coatesville, Pennsylvania)
The Coatesville High Bridge is a stone masonry arch railroad viaduct that crosses the valley of the West Branch Brandywine Creek at Coatesville, Pennsylvania. Built by the Pennsylvania Railroad between 1902 and 1904, it has ten arches (eight of and two of ) and spans a total length of , with wing walls extending it to . high, the bridge was built to accommodate four standard gauge railroad tracks, with a total length of . The Pennsylvania Railroad's Main Line passes along the north side of Coatesville on the southern slope of the North Valley Hills. The bridge carries the Main Line across the water gap cut by the Brandywine, as well as the former Wilmington and Northern Branch of the Reading Railroad and Pennsylvania Route 82 Pennsylvania Route 82 (PA 82) is a north–south state highway located in Chester County, Pennsylvania, Chester County in southeast Pennsylvania, USA. The southern terminus is at the Delaware state line southeast of Kennett Square, Pennsyl ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chester County, Pennsylvania
Chester County (Pennsylvania Dutch language, Pennsylvania Dutch: ''Tscheschter Kaundi''), colloquially referred to as Chesco, is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. It is located in the Delaware Valley region, located in the southeastern part of the state. As of the 2020 United States census, 2020 census, the population was 545,823. increasing by 7.1% from 498,886 in 2010 United States census, 2010. The county seat is West Chester, Pennsylvania, West Chester. The most populous of the county's 73 municipalities, including cities, boroughs, and townships,) is Tredyffrin Township, Pennsylvania, Tredyffrin Township. The most populous boroughs are West Chester and Phoenixville, Pennsylvania, Phoenixville. Coatesville, Pennsylvania, Coatesville is the only municipality in the county that is classified as a city. The county is part of the Delaware Valley, Southeast region of the commonwealth. Chester County was one of the th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia And Columbia Railroad
Philadelphia and Columbia Railroad (P&CR) (1834) was one of the earliest commercial railroads in the United States, running from Philadelphia to Columbia, Pennsylvania, Columbia, Pennsylvania, it was built by the Pennsylvania Canal Commission in lieu of a canal from Columbia to Philadelphia; in 1857 it became part of the Pennsylvania Railroad. It is currently owned and operated by Amtrak as its electrified Keystone Corridor. The Philadelphia and Columbia Railroad's western terminus was located near the former ferry site known as Wright's Ferry, in the town once of that name, but now Columbia, Pennsylvania, Columbia in Lancaster County, Pennsylvania, Lancaster County. There the P&CR met with the Pennsylvania Canal—Canal, navigations and improvements on the Susquehanna River east bank approximately south of Harrisburg, Pennsylvania. Most of its right-of-way was obtained by the actions of the Pennsylvania Canal, Pennsylvania Canal Commission which operated the railroad under th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amtrak
The National Railroad Passenger Corporation, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United States, contiguous U.S. states and three Provinces and territories of Canada, Canadian provinces. ''Amtrak'' is a portmanteau of the words ''America'' and ''track.'' Founded in 1971 as a Quasi-corporation, quasi-public corporation to operate many U.S. passenger rail routes, Amtrak receives a combination of state and federal subsidies but is managed as a for-profit corporation, for-profit organization. The company's headquarters is located one block west of Washington Union Station, Union Station in Washington, D.C. Amtrak is headed by a Board of Directors, two of whom are the United States Secretary of Transportation, secretary of transportation and chief executive officer (CEO) of Amtrak, while the other eight members are nominated to serve a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penn Central
The Penn Central Transportation Company, commonly abbreviated to Penn Central, was an American class I railroad that operated from 1968 to 1976. Penn Central combined three traditional corporate rivals, the Pennsylvania, New York Central and the New York, New Haven and Hartford railroad, each of which were united by large-scale service into the New York metropolitan area and to a lesser extent New England and Chicago. The new company failed barely two years after formation, the largest bankruptcy in U.S. history at the time. Penn Central's railroad assets were nationalized into Conrail along with those of other bankrupt northeastern railroads; its real estate and insurance holdings successfully reorganized into American Premier Underwriters. History Pre-merger The Penn Central railroad system developed in response to challenges facing northeastern American railroads during the late 1960s. While railroads elsewhere in North America drew revenues from long-distance shipment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Electrification System
Railway electrification is the use of electric power for the propulsion of rail transport. Electric railways use either electric locomotives (hauling passengers or freight in separate cars), electric multiple units ( passenger cars with their own motors) or both. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines, but most purchase power from an electric utility. The railway usually provides its own distribution lines, switches, and transformers. Power is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line, suspended from poles or towers along the track or from structure or tunnel ceilings and contacted by a pantograph, or a third rail mounted at track level and contacted by a sliding " pickup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parapet
A parapet is a barrier that is an upward extension of a wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian ''parapetto'' (''parare'' 'to cover/defend' and ''petto'' 'chest/breast'). Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the edge line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall. Parapets were originally used to defend buildings from military attack, but today they are primarily used as guard rails, to conceal rooftop equipment, reduce wind loads on the roof, and to prevent the spread of fires. Parapet types Parapets may be plain, embattled, perforated or panelled, which are not mutually exclusive terms. *Plain parapets are upward extensions of the wall, sometimes with a coping at the top and corbel below. *Embattled parapets may be panelled, but are pierced, if not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid over time. It is the second-most-used substance (after water), the most–widely used building material, and the most-manufactured material in the world. When aggregate is mixed with dry Portland cement and water, the mixture forms a fluid slurry that can be poured and molded into shape. The cement reacts with the water through a process called hydration, which hardens it after several hours to form a solid matrix that binds the materials together into a durable stone-like material with various uses. This time allows concrete to not only be cast in forms, but also to have a variety of tooled processes performed. The hydration process is exothermic, which means that ambient temperature plays a significant role in how long it takes concrete to set. Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancaster, Pennsylvania
Lancaster ( ) is a city in Lancaster County, Pennsylvania, United States, and its county seat. With a population of 58,039 at the 2020 United States census, 2020 census, it is the List of municipalities in Pennsylvania, eighth-most populous city in the state. It is a core city within South Central Pennsylvania, with 552,984 residents in the Lancaster Metropolitan statistical area, metropolitan area. Settled in the 1720s, Lancaster is one of the oldest inland cities in the US. It served as the capital of Pennsylvania from 1799 to 1812. The city's primary industries include healthcare, tourism, public administration, manufacturing, and both professional and semi-professional services. Lancaster is located southwest of Allentown, Pennsylvania, Allentown and west of Philadelphia and is a hub of Pennsylvania Dutch Country. History 18th century Originally called Hickory Town, Lancaster was renamed after the English city of Lancaster, Lancashire, Lancaster by native John Wright ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conestoga River
The Conestoga River (), also referred to as Conestoga Creek (), is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 8, 2011 tributary of the Susquehanna River flowing through the center of Lancaster County, Pennsylvania, United States. Geography Its headwaters rise mostly in southern Berks County and northeastern Lancaster County, in an area known as "Bortz's Swamp" or "Penngall Field" (a small area rises in Chester County). The East Branch and West Branch of the Conestoga join to form the main river just north of Morgantown, and the stream flows from northeast to southwest for more than , passing close to the center of Lancaster and ending at Safe Harbor along the Susquehanna River, approximately north of the Pennsylvania-Maryland state line. The principal tributaries of the Conestoga River are Cocalico Creek, Mill Creek, and Little Conestoga Creek; they drain into the Conestoga River watershed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philadelphia
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the United States, with a population of 1,603,797 in the 2020 United States census, 2020 census. The city is the urban core of the Philadelphia metropolitan area (sometimes called the Delaware Valley), the nation's Metropolitan statistical area, seventh-largest metropolitan area and ninth-largest combined statistical area with 6.245 million residents and 7.379 million residents, respectively. Philadelphia was founded in 1682 by William Penn, an English Americans, English Quakers, Quaker and advocate of Freedom of religion, religious freedom, and served as the capital of the Colonial history of the United States, colonial era Province of Pennsylvania. It then played a historic and vital role during the American Revolution and American Revolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Cassatt
Alexander Johnston Cassatt (December 8, 1839 – December 28, 1906) was the seventh president of the Pennsylvania Railroad (PRR), serving from June 9, 1899, to December 28, 1906. Family and early life Alexander Cassatt was born on December 8, 1839, in Pittsburgh, Pennsylvania. He was the eldest of seven children born to Robert Simpson Cassat (later Cassatt), and his wife Katherine Cassatt, the former Katherine Kelso Johnston. The elder Cassatt was a successful stockbroker and land speculator who was descended from the French Huguenot Jacques Cossart, who came to New Amsterdam in 1662. The Cassatts had seven children, two of whom died in infancy; Alexander's younger sister was the impressionist painter Mary Cassatt. Their mother, Katherine, came from a banking family. She was educated and very well read. It was said that of the seven Cassatt children, Alexander most resembled his mother in "appearance and temperament". In 1856, Alexander Cassatt entered Rensselaer Polytechnic Ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength and low raw material cost, steel is one of the most commonly manufactured materials in the world. Steel is used in structures (as concrete Rebar, reinforcing rods), in Bridge, bridges, infrastructure, Tool, tools, Ship, ships, Train, trains, Car, cars, Bicycle, bicycles, Machine, machines, Home appliance, electrical appliances, furniture, and Weapon, weapons. Iron is always the main element in steel, but other elements are used to produce various grades of steel demonstrating altered material, mechanical, and microstructural properties. Stainless steels, for example, typically contain 18% chromium and exhibit improved corrosion and Redox, oxidation resistance versus its carbon steel counterpart. Under atmospheric pressures, steels generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
