1.
Pittsburgh
–
Pittsburgh is a city in the Commonwealth of Pennsylvania in the United States, and is the county seat of Allegheny County. The city proper has a population of 304,391. The metropolitan population of 2,353,045 is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 26th-largest in the U. S. The city features 30 skyscrapers, two inclines, a fortification and the Point State Park at the confluence of the rivers. Aside from steel, Pittsburgh has led in manufacturing of aluminum, glass, shipbuilding, petroleum, foods, sports, transportation, computing, autos, and electronics. For part of the 20th century, Pittsburgh was behind only New York and Chicago in corporate headquarters employment, Americas 1980s deindustrialization laid off area blue-collar workers and thousands of downtown white-collar workers when the longtime Pittsburgh-based world headquarters moved out. The area has served also as the federal agency headquarters for cyber defense, software engineering, robotics, energy research. The area is home to 68 colleges and universities, including research and development leaders Carnegie Mellon University, the region is a hub for Leadership in Energy and Environmental Design, sustainable energy, and energy extraction. Pittsburgh was named in 1758 by General John Forbes, in honor of British statesman William Pitt, 1st Earl of Chatham. The current pronunciation, which is unusual in English speaking countries, is almost certainly a result of a printing error in some copies of the City Charter of March 18,1816. The error was repeated commonly enough throughout the rest of the 19th century that the pronunciation was lost. After a public campaign the original spelling was restored by the United States Board on Geographic Names in 1911. The area of the Ohio headwaters was long inhabited by the Shawnee, the first known European to enter the region was the French explorer/trader Robert de La Salle from Quebec during his 1669 expedition down the Ohio River. European pioneers, primarily Dutch, followed in the early 18th century, Michael Bezallion was the first to describe the forks of the Ohio in a 1717 manuscript, and later that year European fur traders established area posts and settlements. In 1749, French soldiers from Quebec launched an expedition to the forks to unite Canada with French Louisiana via the rivers, during 1753–54, the British hastily built Fort Prince George before a larger French force drove them off. The French built Fort Duquesne based on LaSalles 1669 claims, the French and Indian War, the North American front of the Seven Years War, began with the future Pittsburgh as its center. British General Edward Braddock was dispatched with Major George Washington as his aide to take Fort Duquesne, the British and colonial force were defeated at Braddocks Field. General John Forbes finally took the forks in 1758, Forbes began construction on Fort Pitt, named after William Pitt the Elder while the settlement was named Pittsborough
2.
Pennsylvania
–
Pennsylvania /ˌpɛnsᵻlˈveɪnjə/, officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States. The Appalachian Mountains run through its middle, Pennsylvania is the 33rd largest, the 5th most populous, and the 9th most densely populated of the 50 United States. The states five most populous cities are Philadelphia, Pittsburgh, Allentown, Erie, the state capital, and its ninth-largest city, is Harrisburg. Pennsylvania has 140 miles of shoreline along Lake Erie and the Delaware Estuary. The state is one of the 13 original founding states of the United States, it came into being in 1681 as a result of a land grant to William Penn. Part of Pennsylvania, together with the present State of Delaware, had earlier been organized as the Colony of New Sweden and it was the second state to ratify the United States Constitution, on December 12,1787. Independence Hall, where the United States Declaration of Independence and United States Constitution were drafted, is located in the states largest city of Philadelphia, during the American Civil War, the Battle of Gettysburg, was fought in the south central region of the state. Valley Forge near Philadelphia was General Washingtons headquarters during the winter of 1777–78. Pennsylvania is 170 miles north to south and 283 miles east to west, of a total 46,055 square miles,44,817 square miles are land,490 square miles are inland waters, and 749 square miles are waters in Lake Erie. It is the 33rd largest state in the United States, Pennsylvania has 51 miles of coastline along Lake Erie and 57 miles of shoreline along the Delaware Estuary. Cities include Philadelphia, Reading, Lebanon and Lancaster in the southeast, Pittsburgh in the southwest, the tri-cities of Allentown, Bethlehem, the northeast includes the former anthracite coal mining communities of Scranton, Wilkes-Barre, Pittston City, and Hazleton. Erie is located in the northwest, the state has 5 regions, namely the Allegheny Plateau, Ridge and Valley, Atlantic Coastal Plain, Piedmont, and the Erie Plain. Straddling two major zones, the majority of the state, with the exception of the corner, has a humid continental climate. The largest city, Philadelphia, has characteristics of the humid subtropical climate that covers much of Delaware. Moving toward the interior of the state, the winter climate becomes colder, the number of cloudy days increase. Western areas of the state, particularly locations near Lake Erie, can receive over 100 inches of snowfall annually, the state may be subject to severe weather from spring through summer into fall. Tornadoes occur annually in the state, sometimes in large numbers, the Tuscarora Nation took up temporary residence in the central portion of Pennsylvania ca. Both the Dutch and the English claimed both sides of the Delaware River as part of their lands in America
3.
Track gauge
–
In rail transport, track gauge is the spacing of the rails on a railway track and is measured between the inner faces of the load-bearing rails. All vehicles on a network must have running gear that is compatible with the track gauge, as the dominant parameter determining interoperability, it is still frequently used as a descriptor of a route or network. There is a distinction between the gauge and actual gauge at some locality, due to divergence of track components from the nominal. Railway engineers use a device, like a caliper, to measure the actual gauge, the nominal track gauge is the distance between the inner faces of the rails. In current practice, it is specified at a distance below the rail head as the inner faces of the rail head are not necessarily vertical. In some cases in the earliest days of railways, the company saw itself as an infrastructure provider only. Colloquially the wagons might be referred to as four-foot gauge wagons, say and this nominal value does not equate to the flange spacing, as some freedom is allowed for. An infrastructure manager might specify new or replacement track components at a variation from the nominal gauge for pragmatic reasons. Track is defined in old Imperial units or in universally accepted metric units or SI units, Imperial units were established in United Kingdom by The Weights and Measures Act of 1824. In addition, there are constraints, such as the load-carrying capacity of axles. Narrow gauge railways usually cost less to build because they are lighter in construction, using smaller cars and locomotives, as well as smaller bridges, smaller tunnels. Narrow gauge is often used in mountainous terrain, where the savings in civil engineering work can be substantial. Broader gauge railways are generally expensive to build and require wider curves. There is no single perfect gauge, because different environments and economic considerations come into play, a narrow gauge is superior if ones main considerations are economy and tight curvature. For direct, unimpeded routes with high traffic, a broad gauge may be preferable, the Standard, Russian, and 46 gauges are designed to strike a reasonable balance between these factors. In addition to the general trade-off, another important factor is standardization, once a standard has been chosen, and equipment, infrastructure, and training calibrated to that standard, conversion becomes difficult and expensive. This also makes it easier to adopt an existing standard than to invent a new one and this is true of many technologies, including railroad gauges. The reduced cost, greater efficiency, and greater economic opportunity offered by the use of a common standard explains why a number of gauges predominate worldwide
4.
National Register of Historic Places
–
The National Register of Historic Places is the United States federal governments official list of districts, sites, buildings, structures, and objects deemed worthy of preservation. The passage of the National Historic Preservation Act in 1966 established the National Register, of the more than one million properties on the National Register,80,000 are listed individually. The remainder are contributing resources within historic districts, each year approximately 30,000 properties are added to the National Register as part of districts or by individual listings. For most of its history the National Register has been administered by the National Park Service and its goals are to help property owners and interest groups, such as the National Trust for Historic Preservation, coordinate, identify, and protect historic sites in the United States. While National Register listings are mostly symbolic, their recognition of significance provides some financial incentive to owners of listed properties, protection of the property is not guaranteed. During the nomination process, the property is evaluated in terms of the four criteria for inclusion on the National Register of Historic Places, the application of those criteria has been the subject of criticism by academics of history and preservation, as well as the public and politicians. Occasionally, historic sites outside the proper, but associated with the United States are also listed. Properties can be nominated in a variety of forms, including individual properties, historic districts, the Register categorizes general listings into one of five types of properties, district, site, structure, building, or object. National Register Historic Districts are defined geographical areas consisting of contributing and non-contributing properties, some properties are added automatically to the National Register when they become administered by the National Park Service. These include National Historic Landmarks, National Historic Sites, National Historical Parks, National Military Parks/Battlefields, National Memorials, on October 15,1966, the Historic Preservation Act created the National Register of Historic Places and the corresponding State Historic Preservation Offices. Initially, the National Register consisted of the National Historic Landmarks designated before the Registers creation, approval of the act, which was amended in 1980 and 1992, represented the first time the United States had a broad-based historic preservation policy. To administer the newly created National Register of Historic Places, the National Park Service of the U. S. Department of the Interior, hartzog, Jr. established an administrative division named the Office of Archeology and Historic Preservation. Hartzog charged OAHP with creating the National Register program mandated by the 1966 law, ernest Connally was the Offices first director. Within OAHP new divisions were created to deal with the National Register, the first official Keeper of the Register was William J. Murtagh, an architectural historian. During the Registers earliest years in the late 1960s and early 1970s, organization was lax and SHPOs were small, understaffed, and underfunded. A few years later in 1979, the NPS history programs affiliated with both the U. S. National Parks system and the National Register were categorized formally into two Assistant Directorates. Established were the Assistant Directorate for Archeology and Historic Preservation and the Assistant Directorate for Park Historic Preservation, from 1978 until 1981, the main agency for the National Register was the Heritage Conservation and Recreation Service of the United States Department of the Interior. In February 1983, the two assistant directorates were merged to promote efficiency and recognize the interdependency of their programs, jerry L. Rogers was selected to direct this newly merged associate directorate
5.
Funicular
–
Funiculars of one sort or another have existed for hundreds of years and continue to be used for moving both passengers and goods. Its name derives from the latin, funiculus, diminutive of funis, the basic idea of funicular operation is that two cars are always attached to each other by a cable, which runs through a pulley at the top of the slope. Counterbalancing of the two cars, with one going up and one going down, minimizes the energy needed to lift the car going up, winching is normally done by an electric drive that turns the pulley. Sheave wheels guide the cable to and from the drive mechanism, early funiculars used two parallel straight tracks, four rails, with separate station platforms for each vehicle. The tracks are laid with sufficient space between them for the two cars to pass at the midpoint, the wheels of the cars are usually single-flanged, as on standard railway vehicles. Examples of this type of track layout are the Duquesne Incline in Pittsburgh, Pennsylvania, layouts that require less width have been developed, with only two or three rails for the most part of the slope and four rails only at the passing section. In layouts using three rails, the rail is shared by both cars. The three-rail layout is wider than the layout, but the passing section is simpler to build. If a rack for braking is used, that rack can be mounted higher in a three-rail layout, some four-rail funiculars have the upper and lower sections interlaced and a single platform at each station. The Hill Train at Legoland, Windsor, is an example of this configuration, until the end of the 1870s, the four-rail parallel-track funicular was the normal configuration. Carl Roman Abt developed the Abt Switch allowing the two-rail layout, in the United States, the first funicular to use a two-rail layout was the Telegraph Hill Railroad in San Francisco, which was in operation from 1884 until 1886. The Mount Lowe Railway in Altadena, California, was the first mountain railway in the United States to use the three-rail layout, three- and two-rail layouts considerably reduced the space required for building a funicular, reducing grading costs on mountain slopes and property costs for urban funiculars. These layouts enabled a funicular boom in the half of the 19th century. The cars can be attached to a cable running through a pulley at the bottom of the incline in case the gravity force acting on the vehicles is too low to operate them on the slope. One of the pulleys must be designed as a wheel to avoid slack in the ropes. In this case, the winching can also be done at the end of the incline. Funiculars used in mines were sometimes unpowered gravity planes, also known as self-acting inclines or brake inclines, the weight of descending loaded wagons was used to pull the empty mine wagons. A few funiculars have been using water tanks under the floor of each car that are filled or emptied until just sufficient imbalance is achieved to allow movement
6.
South Side (Pittsburgh)
–
South Side is an area in Pittsburgh, Pennsylvania, United States, located along the Monongahela River across from Downtown Pittsburgh. The South Side is officially divided into two neighborhoods, South Side Flats and South Side Slopes, both the Flats and the Slopes are represented on Pittsburgh City Council by Bruce Kraus. The business district stretches along East Carson Street, which is home to small shops, restaurants. In 2006, more than 80 bars and pubs operated in the South Side Flats, the neighborhood has an urban fabric with rowhouses. The South Side is well-connected with public transit and its proximity and public transit connections also have attracted professionals who work downtown. Pittsburgh Fire Station #24 is located on Mary Street in the neighborhood, dr. Nathaniel Bedford planned a large part of Birmingham and named many streets after his friends and family, thus the predominance of streets named after people such as Jane, Sarah, and Carson. For many years, much of the South Side was dominated by heavy industry, the Jones and Laughlin Steel Company was located on the South Side but closed in the 1980s and has since been redeveloped. The Pittsburgh Terminal Properties building is located on the west end of Carson Street, when construction finished in 1906, it was the largest warehouse between New York and Chicago. Connections to river, rail, and road transport made it a facility for merchants who sold goods. It has since redeveloped into River Walk Corporate Centre and houses a mix of office and service businesses including Paper Products Company. In more recent years, the South Side has become home to a student population. Many students at Duquesne University, University of Pittsburgh, and Carnegie Mellon University either live in the South Side or spend a portion of their nightlife there, a walk over the South Tenth Street Bridge that crosses the Monongahela River takes students to Duquesne University. Due to the number of college students and young professionals, in addition to the thriving bar scene. Important streets in South Side are E. Carson Street, Josephine Street, the business district is located along E. Carson Street, which runs the length of South Side. The Birmingham Bridge makes South Side easily accessible from Oakland, which is around 2 miles away from South Side, Station Square is about 1.5 miles west of South Side, and Mt. Washington is 2.5 miles away. The average South Side family income in 2003 was $41,353, East Carson St. has restaurants, bars, and shops that help support the economy of the South Side. The large variety of shopping along E. Carson Street and SouthSide Works is also a factor in the South Sides economy, there are a variety of locally owned stores such as Pittsburgh Jeans Co. and widespread stores such as American Eagle, H&M, and Nine West. The Urban Redevelopment Authority started the SouthSide Works project hoping to create over 6,000 jobs, today, SouthSide Works has over 10 shopping stores and over 10 restaurants & bars
7.
Grade (slope)
–
The grade of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of tilt, often slope is calculated as a ratio of rise to run, or as a fraction in which run is the horizontal distance and rise is the vertical distance. The grades or slopes of existing physical features such as canyons and hillsides, stream and river banks, grades are typically specified for new linear constructions. The grade may refer to the slope or the perpendicular cross slope. There are several ways to express slope, as an angle of inclination to the horizontal, as a percentage, the formula for which is 100 rise run which could also be expressed as the tangent of the angle of inclination times 100. In the U. S. this percentage grade is the most commonly used unit for communicating slopes in transportation, surveying, construction, and civil engineering. As a per mille figure, the formula for which is 1000 rise run which could also be expressed as the tangent of the angle of inclination times 1000 and this is commonly used in Europe to denote the incline of a railway. As a ratio of one part rise to so many parts run, for example, a slope that has a rise of 5 feet for every 100 feet of run would have a slope ratio of 1 in 20. This is generally the method used to describe railway grades in Australia, any of these may be used. Grade is usually expressed as a percentage, but this is converted to the angle α from horizontal or the other expressions. Slope may still be expressed when the run is not known. This is not the way to specify slope, it follows the sine function rather than the tangent function. But in practice the way to calculate slope is to measure the distance along the slope and the vertical rise. When the angle of inclination is small, using the slope length rather than the horizontal displacement makes only an insignificant difference, Railway gradients are usually expressed in terms of the rise in relation to the distance along the track as a practical measure. In cases where the difference between sin and tan is significant, the tangent is used. In any case, the identity holds for all inclinations up to 90 degrees, tan α = sin α1 − sin 2 α In Europe. Grades are related using the equations with symbols from the figure at top
8.
Steam engine
–
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. Steam engines are combustion engines, where the working fluid is separate from the combustion products. Non-combustion heat sources such as power, nuclear power or geothermal energy may be used. The ideal thermodynamic cycle used to analyze this process is called the Rankine cycle, in the cycle, water is heated and transforms into steam within a boiler operating at a high pressure. When expanded through pistons or turbines, mechanical work is done, the reduced-pressure steam is then exhausted to the atmosphere, or condensed and pumped back into the boiler. Specialized devices such as hammers and steam pile drivers are dependent on the steam pressure supplied from a separate boiler. The use of boiling water to mechanical motion goes back over 2000 years. The Spanish inventor Jerónimo de Ayanz y Beaumont obtained the first patent for an engine in 1606. In 1698 Thomas Savery patented a steam pump that used steam in direct contact with the water being pumped, Saverys steam pump used condensing steam to create a vacuum and draw water into a chamber, and then applied pressurized steam to further pump the water. Thomas Newcomens atmospheric engine was the first commercial steam engine using a piston. In 1781 James Watt patented an engine that produced continuous rotary motion. Watts ten-horsepower engines enabled a range of manufacturing machinery to be powered. The engines could be sited anywhere that water and coal or wood fuel could be obtained, by 1883, engines that could provide 10,000 hp had become feasible. The stationary steam engine was a key component of the Industrial Revolution, the aeolipile described by Hero of Alexandria in the 1st century AD is considered to be the first recorded steam engine. Torque was produced by steam jets exiting the turbine, in the Spanish Empire, the great inventor Jerónimo de Ayanz y Beaumont obtained a patent for the first steam engine in history in 1603. Thomas Savery, in 1698, patented the first practical, atmospheric pressure and it had no piston or moving parts, only taps. It was an engine, a kind of thermic syphon, in which steam was admitted to an empty container. The vacuum thus created was used to water from the sump at the bottom of the mine
9.
Monongahela Incline
–
The Monongahela Incline, built by John Endres in 1870, is located near the Smithfield Street Bridge in Pittsburgh. It is the oldest continuously operating funicular in the United States and it is also one of two surviving inclines from the original 17 passenger-carrying inclines built in Pittsburgh starting in the late 19th century. Its lower station is across the street from the Station Square shopping complex, Pittsburghs expanding industrial base in 1860 created a huge demand for labor, attracting mainly German immigrants to the region. This created a housing shortage as industry occupied most of the flat lands adjacent to the river, leaving only the steep. However, travel between the hill and other areas was hindered by a lack of roads or public transport. The predominantly German immigrants who settled on Mt. Washington, remembering the Seilbahns of their former country, the result was the Monongahela Incline, which opened on May 28,1870. The Monongahela Incline is operated by the Port Authority of Allegheny County, transfers can be made between the incline and the light rail and buses. PA-226, Monongahela Incline Plane,28 photos,36 data pages,7 photo caption pages Lower Station from Google Maps Street View Upper Station from Google Maps Street View
10.
J. G. Brill Company
–
The J. G. Brill Company manufactured streetcars, interurban coaches, and buses in the United States for almost ninety years. The company was founded by John George Brill in 1868 as a manufacturing firm in Philadelphia. Over the years, it absorbed numerous other manufacturers such as Kuhlman in Cleveland. With business diminishing, in 1944 it merged with the American Car and it ceased trolley and bus production in 1954, though some of their interurbans served the Philadelphia area till the 1980s. Brill was the longest lasting of the trolley and interurban manufacturers. It manufactured over 45,000 streetcars, trams, motor buses, trolleybuses, at its height, it was the largest manufacturer of streetcars and interurbans in the U. S. and produced more streetcars and interurbans and gas electrics than any other manufacturer. In 1868, the Brill company was founded as J. G, after James Rawle joins the firm in 1872, it is renamed J. G. In 1926, ACF Motors Company obtained a controlling interest in Brill, the firm built about 1,100 trolley buses and a few thousand buses under the name. On January 31,1946, a controlling interest in ACF-Brill was acquired by Consolidated Vultee Aircraft Corporation for $7.5 million. Consolidated Vultee was sold on November 6,1947, to the Nashville Corporation, in early 1954, the Brill name disappeared when ACF-Brill ceased production and subcontracted remaining orders. In Europe, Cie. J. G. Brill of Gallardon, birney safety car – by subsidiary, the American Car Company. Steel heavy interurban cars built 1920-1930s, the Brill Center Door car was typical of suburban trolleys and interurbans built around 1920. These tended to be large, heavy, double-ended cars, with passengers entering and exiting via doors located at the center of the car, many rebuilt into one man cars. All-steel, had standard controller stand, capable of 70 mph, Brilliner – Brills competitor to the PCC looked somewhat like the first PCCs. The Brilliner was not successful compared to the PCC. Few were sold, whereas PCCs were well sold worldwide, twenty-four built for Atlantic Citys Miss America Fleet. Brill diners - Brill sold and designed diners, generally one of its four subsidiaries. The last one believed to be operating is the Capitol Diner in Lynn, Massachusetts, up to that time, both the wood and most of the steel interurban cars were large, sat high, and were heavy
.svg)
