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Boylston (MBTA Station)
Boylston station (also signed as Boylston Street) is a light rail station on the MBTA Green Line in downtown Boston, Massachusetts, located on the southeast corner of Boston Common at the intersection of Boylston Street and Tremont Street. A southbound street-level stop for the route of the bus rapid transit Silver Line is outside fare control. The station has two island platforms; each has one disused track, making them effectively side platforms. Boylston is not accessible for Green Line trains. Boylston station was opened in 1897 as part of the original segment of the Tremont Street subway. Originally used by streetcars, from 1901 to 1908 it also served Main Line Elevated trains. Unlike other Green Line stations, Boylston has been little modified, and retains much of its original appearance. Two of the original four headhouses have been removed, however, and a sub-passage connecting the platforms has been sealed. Construction of a proposed underground Silver Line station ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boylston Street
Boylston Street is a major east–west thoroughfare in the city of Boston, Massachusetts. The street begins in Boston's Chinatown neighborhood, forms the southern border of the Boston Public Garden and Boston Common, runs through Back Bay, and ends in Boston's Fenway neighborhood. Name As early as 1722, Boylston Street, then a short road on the outskirts of the town of Boston, was known as Frogg Lane or Frog Lane. It was later renamed for Ward Nicholas Boylston (1747–1828),Bentinck-Smith, William"Nicholas Boylston and His Harvard Chair" ''Proceedings of the Massachusetts Historical Society'', Third Series, Vol. 93, (1981), pp. 17-39 a philanthropist and benefactor of Harvard University. Boylston, who was a descendant of Zabdiel Boylston, was born in Boston and spent much of his life in it. Boylston Market, and the town of Boylston, Massachusetts, were also named after him. Route From east to west, Boston's Boylston Street begins at the intersection of Essex Street and Wash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange Line (MBTA)
The Orange Line is a rapid transit line operated by the Massachusetts Bay Transportation Authority (MBTA) as part of the MBTA subway system. The line runs south on the surface from Oak Grove station in Malden, Massachusetts through Malden and Medford, paralleling the Haverhill Line, then crosses the Mystic River on a bridge into Somerville, then into Charlestown. It passes under the Charles River and runs through Downtown Boston in the Washington Street Tunnel. The line returns to the surface in the South End, then follows the Southwest Corridor southwest in a cut through Roxbury and Jamaica Plain to Forest Hills station. The Orange Line operates during normal MBTA service hours (all times except late nights) with six-car trains. A 120-car fleet built in 1979–1981 is being replaced with a 152-car CRRC fleet from 2018 to 2023. The Orange Line is fully grade-separated; trains are driven by operators with automatic train control for safety. Wellington Carhouse in Medford is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inbound Headhouse At Boylston Station, July 2019 .
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''Inbound may refer to:'' * Inbound links, also called Backlinks - incoming links to a website. * American Inbound - a company that provides outsourced customer relationship management * Inbound students - students or scholars from a foreign country who participate in an academic program within the inviting country, from whose perspective the students are "inbound" * Inbound - a direction of busses and trains that travel toward the city center ** (of the greater San Francisco Bay Area) towards or through downtown San Francisco, regardless of origin * Inbound - a rock band based out of Cranberry Township, Butler County, Pennsylvania Cranberry Township is a municipality in Butler County, Pennsylvania. The population was 33,096 as of the 2020 census. Cranberry Township is one of the fastest-growing areas of the Pittsburgh metropolitan area. History In 1753, George Washingt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Side Platform
A side platform (also known as a marginal platform or a single-face platform) is a platform positioned to the side of one or more railway tracks or guideways at a railway station, tram stop, or transitway. A station having dual side platforms, one for each direction of travel, is the basic design used for double-track railway lines (as opposed to, for instance, the island platform where a single platform lies between the tracks). Side platforms may result in a wider overall footprint for the station compared with an island platform where a single width of platform can be shared by riders using either track. In some stations, the two side platforms are connected by a footbridge running above and over the tracks. While a pair of side platforms is often provided on a dual-track line, a single side platform is usually sufficient for a single-track line. Layout Where the station is close to a level crossing (grade crossing) the platforms may either be on the same side of the cross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleasant Street Incline
The Pleasant Street incline or Pleasant Street portal was the southern access point for the Tremont Street subway in Boston, Massachusetts, which became part of the Green Line after the incline was closed. The portal and the section of tunnel connecting it to Boylston served streetcars from 1897 to 1901, Main Line Elevated trains from 1901 to 1908, and streetcars again from 1908 to 1962. The Pleasant Street incline is now abandoned, but plans have been floated at various times to reuse it. History Early use The incline opened on October 1, 1897, one month after the first section of the Tremont Street subway, allowing streetcar lines from Roxbury, Dorchester, and points south to operate via the subway. The new tunnel stretched from the outer tracks at Boylston south under Tremont Street, with a four-track portal in the triangle bounded by Tremont Street, Pleasant Street (later part of Broadway), and Shawmut Avenue. The tunnel carried two tracks, splitting into four tracks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SL5 (MBTA Bus)
The Silver Line is a system of bus routes in Boston and Chelsea, Massachusetts, operated by the Massachusetts Bay Transportation Authority (MBTA). It is operated as part of the MBTA bus system, but branded as bus rapid transit (BRT) as part of the MBTA subway system. Six routes are operated as part of two disconnected corridors. , weekday ridership on the Silver Line was 39,000. The four Waterfront routes operate out of an underground terminal at and run through the South Boston Piers Transitway – a dedicated bus tunnel through the Seaport District with stations at and . At , they fan out on the surface: the SL1 to Logan International Airport, the SL2 to Dry Dock Avenue, and the SL3 to via East Boston. An additional short turn route, SLW, runs only at peak hours between South Station and Silver Line Way. The Waterfront routes use articulated dual-mode buses that operate as electric trolleybuses in the Transitway and conventional diesel buses on the surface. Two routes o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A-weighting
A-weighting is the most commonly used of a family of curves defined in the International standard IEC 61672:2003 and various national standards relating to the measurement of sound pressure level. A-weighting is applied to instrument-measured sound levels in an effort to account for the relative loudness perceived by the human ear, as the ear is less sensitive to low audio frequencies. It is employed by arithmetically adding a table of values, listed by octave or third-octave bands, to the measured sound pressure levels in dB. The resulting octave band measurements are usually added (logarithmic method) to provide a single A-weighted value describing the sound; the units are written as dB(A). Other weighting sets of values – B, C, D and now Z – are discussed below. The curves were originally defined for use at different average sound levels, but A-weighting, though originally intended only for the measurement of low-level sounds (around 40 phon), is now commonly used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emerson College
Emerson College is a private college with its main campus in Boston, Massachusetts. It also maintains campuses in Hollywood, Los Angeles, California and Well, Limburg, Netherlands ( Kasteel Well). Founded in 1880 by Charles Wesley Emerson as a "school of oratory," the college offers more than three dozen degree and professional training programs specializing in the fields of arts and communication with a foundation in liberal arts studies. The college is one of the founding members of the ProArts Consortium, an association of six neighboring institutions in Boston dedicated to arts education at the collegiate level. Emerson is also notable for the college's namesake public opinion poll, Emerson College Polling, which is operated by the Department of Communication Studies. Originally based in Boston's Pemberton Square, the college moved neighborhoods several times, and is now located in the Theater District along the south side of the Boston Common. Emerson owns and operates th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large scale (300 kton/year, in 1989) for uses in pencils, lubricants, and electrodes. Under high pressures and temperatures it converts to diamond. It is a weak conductor of heat and electricity. Types and varieties Natural graphite The principal types of natural graphite, each occurring in different types of ore deposits, are * Crystalline small flakes of graphite (or flake graphite) occurs as isolated, flat, plate-like particles with hexagonal edges if unbroken. When broken the edges can be irregular or angular; * Amorphous graphite: very fine flake graphite is sometimes called amorphous; * Lump graphite (or vein graphite) occurs in fissure veins or fractures and appears as massive platy intergrowths of fibrous or acicular crystalline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flange
A flange is a protruded ridge, lip or rim (wheel), rim, either external or internal, that serves to increase shear strength, strength (as the flange of an iron beam (structure), beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe (fluid conveyance), pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a railroad car, rail car or tram train wheel, wheel, which keep the wheels from derailment, running off the rail profile, rails). Flanges are often attached using bolts in the pattern of a bolt circle. The term "flange" is also used for a kind of tool used to form flanges. Plumbing or piping A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe (for example, a closet flange). A blind flange is a plate for covering or closing the end of a pipe. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Squeal
Rail squeal is a screeching train-track friction sound, commonly occurring on sharp curves. Squeal is presumably caused by the lateral sticking and slipping of the wheels across top of the railroad track. This results in vibrations in the wheel that increase until a stable amplitude is reached. Lubricating the rails has limited success. Speed reduction also appears to reduce noise levels. The sticking of the rim of the wheel causes the wheel to ring like a bell, so rubber dampers or tuned absorbers are a possible solution to lower the volume. The MBTA Green Line, for example, suffers from severe rail squeal on the sharp curves within the central subway. Flange stick graphite lubricators have been installed on trains to attempt to mitigate the rail squeal issue. The mechanism that causes the squealing also is the cause of wear and tear that is happening in the wheel–rail interface. Factors Factors include: * Accelerating, coasting or braking * Diameter of wheel * Powered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Railway Curve Radius
The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions. It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks, determines the maximum safe speed of a curve. The minimum radius of a curve is one parameter in the design of railway vehicles as well as trams; monorails and automated guideways are also subject to a minimum radius. History The first proper railway was the Liverpool and Manchester Railway, which opened in 1830. Like the tram roads that had preceded it over a hundred years, the L&M had gentle curves and gradients. Reasons for these gentle curves include the lack of strength of the track, which might have overturned if the curves were too sharp causing derailments. The gentler the curves, the greater the visibility, thus boosting safety via increased ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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