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103-766: When topped-off in August 1983, it was the tallest building south of New York City and east of the Mississippi River , taking away the same title from the Westin Peachtree Plaza Hotel , in Atlanta , Georgia . It remained the tallest building in the southeastern U.S. until 1987, when it was surpassed by One Atlantic Center in Atlanta and the tallest in Florida until October 1, 2003, when it

206-506: A hoist , although some pump hydraulic fluid to raise a cylindrical piston like a jack . Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators , grain augers , and hay elevators . Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers . Some elevators can even move horizontally. The earliest known reference to an elevator

309-587: A "Chart for determining the number and size of elevators required for office buildings of a given total occupied floor area". In 1920, Howard B. Cook presented a paper titled "Passenger Elevator Service". This paper marked the first time a member of the elevator industry offered a mathematical means of determining elevator service. His formula determined the round trip time (RTT) by finding the single trip time, doubling it, and adding 10 seconds. In 1923, Bassett Jones published an article titled "The Probable Number of Stops Made by an Elevator". He based his equations on

412-541: A building is at its most busy first thing in the morning; however, in more complicated elevator systems, this model does not work. In 1990, Peters published a paper titled "Lift Traffic Analysis: Formulae for the General Case" in which he developed a new formula which would account for mixed traffic patterns as well as accounting for passenger bunching using Poisson approximation. This new General Analysis equation enabled much more complex systems to be analyzed however

515-631: A decade between Irish immigrants and Black people for work. Rioters burned the Colored Orphan Asylum to the ground. At least 120 people were killed. Eleven Black men were lynched over five days, and the riots forced hundreds of Blacks to flee. The Black population in Manhattan fell below 10,000 by 1865. The White working class had established dominance. It was one of the worst incidents of civil unrest in American history . In 1886,

618-426: A deeply grooved pulley , commonly called a sheave in the industry. The weight of the car is balanced by a counterweight . Oftentimes two elevators (or sometimes three) are built so that their cars always move synchronously in opposite directions, and are each other's counterweight. The friction between the ropes and the pulley furnishes the traction which gives this type of elevator its name. Hydraulic elevators use

721-461: A floor at the same time, are usually driven by the same motor. The system increases efficiency in high-rise buildings, and saves space so additional shafts and cars are not required. In 2003, TK Elevator invented a system called TWIN, with two elevator cars independently running in one shaft. In 1901, consulting engineer Charles G. Darrach (1846–1927) proposed the first formula to determine elevator service. In 1908, Reginald P. Bolton published

824-539: A more compact system. The IGBT also allowed the development of a small, highly integrated, highly sophisticated all-digital control device, consisting of a high-speed processor, specially customized gate arrays, and a circuit capable of controlling large currents of several kHz. In 2000, the first vacuum elevator was offered commercially in Argentina. Some people argue that elevators began as simple rope or chain hoists (see Traction elevators below). An elevator

927-580: A novel tourist attraction which they called the "ascending room", which elevated customers to a considerable height in the center of London, providing a panoramic view. Early, crude steam-driven elevators were refined in the ensuing decade. In 1835, an innovative elevator, the Teagle, was developed by the company Frost and Stutt in England . It was belt-driven and used a counterweight for extra power. In 1845, Neapolitan architect Gaetano Genovese installed

1030-523: A part of the colony of New York . It became a center of slavery , with 42% of households enslaving Africans by 1730. Most were domestic slaves ; others were hired out as labor. Slavery became integrally tied to New York's economy through the labor of slaves throughout the port, and the banking and shipping industries trading with the American South . During construction in Foley Square in

1133-519: A reputation as a despotic leader. He instituted regulations on liquor sales, attempted to assert control over the Dutch Reformed Church , and blocked other religious groups from establishing houses of worship. In 1664, unable to summon any significant resistance, Stuyvesant surrendered New Amsterdam to English troops, led by Colonel Richard Nicolls , without bloodshed. The terms of the surrender permitted Dutch residents to remain in

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1236-531: A result of Sandy, and the economic losses in New York City were estimated to be roughly $ 19 billion. The disaster spawned long-term efforts towards infrastructural projects to counter climate change and rising seas, with $ 15 billion in federal funding received through 2022 towards those resiliency efforts. In March 2020, the first case of COVID-19 in the city was confirmed. With its population density and its extensive exposure to global travelers,

1339-421: A series of reinforced concrete grade beams tied to 150 concrete caissons as much as ten feet in diameter and to a depth of 80 feet. A steel space-frame canopy with glass skylights covers the outdoor plaza between the tower and low-rise building. The tower has a composite structure. The exterior columns and beams are concrete encased steel wide flanges surrounded by reinforcing bars. The composite exterior frame

1442-577: A small cabinet houses the controller. The equipment is otherwise similar to that of a normal traction or hole-less hydraulic elevator. The world's first machine-room-less elevator, the Kone MonoSpace, was introduced in the year 1996, by Kone . Compared to traditional elevators, it: Its disadvantage was that it could be harder, and significantly more dangerous, to service and maintain. Double-decker elevators are traction elevators with cars that have an upper and lower deck. Both decks, which can serve

1545-460: A so-called 'flying chair' built for one of his mistresses at the Château de Versailles in 1743. Ancient and medieval elevators used drive systems based on hoists and windlasses . The invention of a system based on the screw drive was perhaps the most important step in elevator technology since ancient times, leading to the creation of modern passenger elevators. The first screw-drive elevator

1648-485: A speech denying the request, which was paraphrased on the front page of the New York Daily News as "FORD TO CITY: DROP DEAD." The Municipal Assistance Corporation was formed and granted oversight authority over the city's finances. While a resurgence in the financial industry greatly improved the city's economic health in the 1980s, New York's crime rate continued to increase through that decade and into

1751-588: A successful elevator enterprise in Austria-Hungary. The safety and speed of electric elevators were significantly enhanced by Frank Sprague , who added floor control, automatic operation, acceleration control, and further safety devices. His elevator ran faster and with larger loads than hydraulic or steam elevators. 584 of Sprague's elevators were installed before he sold his company to the Otis Elevator Company in 1895. Sprague also developed

1854-420: A variety of factors. Hydraulic elevators are cheaper, but installing cylinders greater than a certain length becomes impractical for very-high lift hoistways. For buildings of much over seven floors, traction elevators must be employed instead. Hydraulic elevators are usually slower than traction elevators. Elevators are a candidate for mass customization . There are economies to be made from mass production of

1957-409: A vertical cylinder, allowing the platform, carrying a heavy load, to be raised and lowered. Counterweights and balances were also used to increase lifting power. Henry Waterman of New York is credited with inventing the "standing rope control" for an elevator in 1850. In 1852, Elisha Otis introduced the safety elevator, which prevented the fall of the cab if the cable broke. He demonstrated it at

2060-483: Is a global center of finance and commerce , culture , technology , entertainment and media , academics and scientific output , the arts and fashion , and, as home to the headquarters of the United Nations , international diplomacy . With an estimated population in 2023 of 8,258,035 distributed over 300.46 square miles (778.2 km ), the city is the most densely populated major city in

2163-432: Is a concrete-framed structure. Each floor consists of nearly an acre of continuously poured concrete. When the concrete had sufficiently hardened, compressed air was used to blow the forms fiberglass forms from under the completed floor. It was then rolled out to the exterior where it was raised by crane into position for the next floor. The building was recognized as Miami's first and only office building to be certified for

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2266-467: Is an established safe haven for global investors. As of 2023 , New York City is the most expensive city in the world for expatriates and has by a wide margin the highest U.S. city residential rents; and Fifth Avenue is the most expensive shopping street in the world. New York City is home by a significant margin to the highest number of billionaires , individuals of ultra-high net worth (greater than US$ 30 million), and millionaires of any city in

2369-426: Is applied in high-speed elevators worldwide. The Toshiba company continued research on thyristors for use in inverter control and dramatically enhanced their switching capacity, resulting in the development of insulated gate bipolar transistors (IGBTs) at the end of the 1980s. The IGBT realized increased switching frequency and reduced magnetic noise in the motor, eliminating the need for a filter circuit and allowing

2472-446: Is essentially a platform that is either pulled or pushed up by mechanical means. A modern-day elevator consists of a cab (also called a "cabin", "cage", "carriage" or "car") mounted on a platform within an enclosed space called a shaft or sometimes a "hoistway". In the past, elevator drive mechanisms were powered by steam and water hydraulic pistons or by hand. In a "traction" elevator, cars are pulled up by means of rolling steel ropes over

2575-518: Is in the works of the Roman architect Vitruvius , who reported that Archimedes ( c.  287 BC – c.  212 BC ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people or animals. The Roman Colosseum , completed in 80 AD, had roughly 25 elevators that were used for raising animals up to the floor. Each elevator could carry about 600 pounds (270 kg) (roughly

2678-615: Is the most populous city in the United States , located at the southern tip of New York State on one of the world's largest natural harbors . The city comprises five boroughs , each coextensive with a respective county . The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area , the largest metropolitan area in the U.S. by both population and urban area . New York

2781-576: Is thought to be the first office building with passenger elevators. In 1872, American inventor James Wayland patented a novel method of securing elevator shafts with doors that are automatically opened and closed as the elevator car approaches and leaves them. In 1874, J. W. Meaker patented a method permitting elevator doors to open and close safely. The first electric elevator was built by Werner von Siemens in 1880 in Germany. Inventor Anton Freissler further developed von Siemens' ideas and created

2884-866: The Atlantic port to the agricultural markets and commodities of the North American interior via the Hudson River and the Great Lakes . Local politics became dominated by Tammany Hall , a political machine supported by Irish and German immigrants . In 1831, New York University was founded. Several prominent American literary figures lived in New York during the 1830s and 1840s, including William Cullen Bryant , Washington Irving , Herman Melville , Rufus Wilmot Griswold , John Keese , Nathaniel Parker Willis , and Edgar Allan Poe . Members of

2987-909: The Crown , with as many as 10,000 escaped slaves crowded into the city during the British occupation, the largest such community on the continent. When the British forces evacuated New York at the close of the war in 1783, they transported thousands of freedmen for resettlement in Nova Scotia , England, and the Caribbean . The attempt at a peaceful solution to the war took place at the Conference House on Staten Island between American delegates, including Benjamin Franklin , and British general Lord Howe on September 11, 1776. Shortly after

3090-742: The New York City Fire Department and 71 law enforcement officers. The area was rebuilt with a new World Trade Center , the National September 11 Memorial and Museum , and other new buildings and infrastructure, including the World Trade Center Transportation Hub , the city's third-largest hub. The new One World Trade Center is the tallest skyscraper in the Western Hemisphere and the seventh-tallest building in

3193-1000: The Northwest Passage to the Orient for the Dutch East India Company . He sailed up what the Dutch called North River (now the Hudson River), named first by Hudson as the Mauritius after Maurice, Prince of Orange . Hudson claimed the region for the Dutch East India Company. In 1614, the area between Cape Cod and Delaware Bay was claimed by the Netherlands and called Nieuw-Nederland (' New Netherland '). The first non–Native American inhabitant of what became New York City

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3296-576: The Statue of Liberty , a gift from France , was dedicated in New York Harbor. The statue welcomed 14 million immigrants as they came to the U.S. via Ellis Island by ship in the late 19th and early 20th centuries, and is a symbol of the United States and American ideals of liberty and peace. In 1898, the City of New York was formed with the consolidation of Brooklyn (until then a separate city),

3399-709: The Stonewall riots were a series of violent protests by members of the gay community against a police raid that took place in the early morning of June 28, 1969, at the Stonewall Inn in Greenwich Village . They are widely considered to be the single most important event leading to the gay liberation movement and the modern fight for LGBT rights . Wayne R. Dynes , author of the Encyclopedia of Homosexuality , wrote that drag queens were

3502-612: The steamship General Slocum caught fire in the East River , killing 1,021 people. In 1911, the Triangle Shirtwaist Factory fire , the city's worst industrial disaster, killed 146 garment workers and spurred the growth of the International Ladies' Garment Workers' Union and major improvements in factory safety standards. New York's non-White population was 36,620 in 1890. New York City

3605-595: The waterfronts since Dutch colonial times; reclamation is most prominent in Lower Manhattan, with developments such as Battery Park City in the 1970s and 1980s. Some of the natural relief in topography has been evened out, especially in Manhattan. Elevator An elevator ( American English ) or lift ( Commonwealth English ) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as

3708-482: The "Flying chair", an elevator ahead of its time in the Royal Palace of Caserta . It was covered with chestnut wood outside and with maple wood inside. It included a light, two benches, and a hand-operated signal, and could be activated from the outside, without any effort by the occupants. Traction was controlled by a motor mechanic utilizing a system of toothed wheels. A safety system was designed to take effect if

3811-552: The 1990s, the African Burying Ground was discovered; the cemetery included 10,000 to 20,000 graves of colonial-era Africans, some enslaved and some free. The 1735 trial and acquittal in Manhattan of John Peter Zenger , who had been accused of seditious libel after criticizing colonial governor William Cosby , helped to establish freedom of the press in North America . In 1754, Columbia University

3914-538: The 19th century, the city was transformed by both commercial and residential development relating to its status as a national and international trading center , as well as by European immigration, respectively. The city adopted the Commissioners' Plan of 1811 , which expanded the city street grid to encompass almost all of Manhattan. The 1825 completion of the Erie Canal through central New York connected

4017-534: The 38th floor. Ground was broken on the complex on December 12, 1981 and the official dedication and opening for the complex was held on October 23, 1984. The Southeast Financial Center was designed by Edward Charles Bassett of Skidmore, Owings and Merrill . The Associate Architect was Spillis Candela & Partners. It has 1,145,311 ft (106,000 m) of office space. A typical floor has about 22,000 ft (2,043.87 m) of office space. Each floor has 9 ft x 9 ft (2.7 m x 2.7 m) floor to ceiling windows. (All of

4120-531: The 55-story office tower and the 15-story parking annex. The tower has 53 stories of office space. The first floor is dedicated for retail, the second floor is the lobby and the 55th floor was home to the luxurious Miami City Club. The parking annex has 12 floors of parking space for 1,150 cars. The first floor is dedicated for retail, the second floor is a banking hall and the 15th floor has the Downtown Athletic Club. A landscaped plaza lies between

4223-700: The British occupation began, the Great Fire of New York destroyed nearly 500 buildings, about a quarter of the structures in the city, including Trinity Church . In January 1785, the assembly of the Congress of the Confederation made New York City the national capital. New York was the last capital of the U.S. under the Articles of Confederation and the first capital under the Constitution of

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4326-530: The Bronx , and Staten Island . Anchored by Wall Street in the Financial District, Manhattan , New York City has been called both the world's premier financial and fintech center and the most economically powerful city in the world. As of 2022 , the New York metropolitan area is the largest metropolitan economy in the world , with a gross metropolitan product of over US$ 2.16 trillion. If

4429-575: The County of New York (which then included parts of the Bronx), the County of Richmond, and the western portion of the County of Queens. The opening of the New York City Subway in 1904, first built as separate private systems, helped bind the new city together. Throughout the first half of the 20th century, the city became a world center for industry, commerce, and communication. In 1904,

4532-603: The Dutch West India Company relinquished its monopoly over the fur trade, leading to growth in the production and trade of food, timber, tobacco, and slaves (particularly with the Dutch West Indies ). In 1647, Peter Stuyvesant began his tenure as the last Director-General of New Netherland. During his tenure, the population of New Netherland grew from 2,000 to 8,000. Stuyvesant has been credited with improving law and order; however, he earned

4635-544: The Dutch colonial Director-General Peter Minuit , as charged by the Dutch West India Company , purchased the island of Manhattan from the Canarsie , a small Lenape band, for "the value of 60 guilders " (about $ 900 in 2018). A frequently told but disproved legend claims that Manhattan was purchased for $ 24 worth of glass beads. Following the purchase, New Amsterdam grew slowly. To attract settlers,

4738-613: The Dutch instituted the patroon system in 1628, whereby wealthy Dutchmen ( patroons , or patrons) who brought 50 colonists to New Netherland would be awarded land, local political autonomy, and rights to participate in the lucrative fur trade. This program had little success. Since 1621, the Dutch West India Company had operated as a monopoly in New Netherland, on authority granted by the Dutch States General . In 1639–1640, in an effort to bolster economic growth,

4841-569: The LEED Gold award in January 2010. The center was developed by a partnership consisting of Gerald D. Hines Interests , Southeast Bank and Corporate Property Investors for $ 180 million. It was originally built as the headquarters for Southeast Bank , which originally occupied 50 percent of the complex's space. It remained Southeast Bank's headquarters there until it was liquidated in 1991. The Southeast Financial Center comprises two buildings:

4944-597: The Native Americans and epidemics brought on by contact with the Europeans caused sizeable population losses for the Lenape between 1660 and 1670. By 1700, the Lenape population had diminished to 200. New York experienced several yellow fever epidemics in the 18th century, losing ten percent of its population in 1702 alone. In the early 18th century, New York grew in importance as a trading port while as

5047-532: The New York exposition in the Crystal Palace in a dramatic, death-defying presentation in 1854, and the first such passenger elevator was installed at 488 Broadway in New York City on 23 March 1857. The first elevator shaft preceded the first elevator by four years. Construction for Peter Cooper 's Cooper Union Foundation building in New York began in 1853. An elevator shaft was included in

5150-480: The New York metropolitan area were its own country , it would have the tenth-largest economy in the world . Despite having a 24/7 rapid transit system , New York also leads the world in urban automobile traffic congestion . The city is home to the world's two largest stock exchanges by market capitalization of their listed companies: the New York Stock Exchange and Nasdaq . New York City

5253-716: The Revolutionary War and escaped slaves, a significant free-Black population gradually developed in Manhattan. The New York Manumission Society worked for abolition and established the African Free School to educate Black children. It was not until 1827 that slavery was completely abolished in the state . Free Blacks struggled with discrimination and interracial abolitionist activism continued. New York City's population jumped from 123,706 in 1820 (10,886 of whom were Black and of which 518 were enslaved) to 312,710 by 1840 (16,358 of whom were Black). Also in

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5356-465: The United States . As the U.S. capital, New York City hosted the inauguration of the first President, George Washington , and the first Congress , at Federal Hall on Wall Street . Congress drafted the Bill of Rights there. The Supreme Court held its first organizational sessions in New York in 1790. In 1790, for the first time, New York City surpassed Philadelphia as the nation's largest city. At

5459-436: The United States . As many as 800 languages are spoken in New York City, making it the most linguistically diverse city in the world. In 2021, the city was home to nearly 3.1 million residents born outside the U.S., the largest foreign-born population of any city in the world. New York City traces its origins to Fort Amsterdam and a trading post founded on Manhattan Island by Dutch colonists around 1624. The settlement

5562-416: The United States. New York City has more than double the population of Los Angeles , the nation's second-most populous city. With more than 20.1 million people in its metropolitan statistical area and 23.5 million in its combined statistical area as of 2020, New York City is one of the world's most populous megacities . The city and its metropolitan area are the premier gateway for legal immigration to

5665-668: The area for France and named it Nouvelle Angoulême (New Angoulême ). A Spanish expedition, led by the Portuguese captain Estêvão Gomes sailing for Emperor Charles V , arrived in New York Harbor in January 1525 and charted the mouth of the Hudson River , which he named Río de San Antonio ('Saint Anthony's River'). In 1609, the English explorer Henry Hudson rediscovered New York Harbor while searching for

5768-548: The beginning of the 1990s. By the mid-1990s, crime rates started to drop dramatically due to revised police strategies, improving economic opportunities, gentrification , and new residents, both American transplants and new immigrants from Asia and Latin America. New York City's population exceeded 8 million for the first time in the 2000 United States census ; further records were set in 2010 , and 2020 U.S. censuses. Important new sectors, such as Silicon Alley , emerged in

5871-430: The building's windows are tinted except for the top floor, resulting in strikingly bright and clear views from there.) The total complex has over 2.2 million ft (204,000 m). The distinctive setbacks begin at the 43rd floor. Each typical floor plate has 9 corner offices and the top twelve floors have as many as 16. There are 43 elevators in the office tower. An emergency control station provides computerized monitoring for

5974-534: The business elite lobbied for the establishment of Central Park , which in 1857 became the first landscaped park in an American city. The Great Irish Famine brought a large influx of Irish immigrants, of whom more than 200,000 were living in New York by 1860, representing over a quarter of the city's population. Extensive immigration from the German provinces meant that Germans comprised another 25% of New York's population by 1860. Democratic Party candidates were consistently elected to local office, increasing

6077-500: The car does not reach maximum rated speed or acceleration, and added the functionality of express zones. This equation is now referred to as the 'Up peak Calculation' as it uses the assumption that all the passengers are coming into the building from the ground floor (incoming traffic) and that there are no passengers traveling from a higher floor to the ground floor (outgoing traffic) and no passengers traveling from one internal floor to another (interfloor traffic). This model works well if

6180-460: The car passed through them. The first elevator in India was installed at the Raj Bhavan in Kolkata by Otis in 1892. By 1900, completely automated elevators were available, but passengers were reluctant to use them. Their adoption was aided by a 1945 elevator operator strike in New York City, and the addition of an emergency stop button, emergency telephone, and a soothing explanatory automated voice. An inverter-controlled gearless drive system

6283-510: The city from New Jersey. The East River—a tidal strait —flows from Long Island Sound and separates the Bronx and Manhattan from Long Island. The Harlem River , another tidal strait between the East and Hudson rivers, separates most of Manhattan from the Bronx. The Bronx River , which flows through the Bronx and Westchester County , is the only entirely freshwater river in the city. The city's land has been altered substantially by human intervention, with considerable land reclamation along

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6386-439: The city rapidly replaced Wuhan , China as the global epicenter of the pandemic during the early phase, straining the city's healthcare infrastructure. Through March 2023, New York City recorded more than 80,000 deaths from COVID-19-related complications. New York City is situated in the northeastern United States , in southeastern New York State, approximately halfway between Washington, D.C. and Boston . Its location at

6489-447: The city's economy. The advent of Y2K was celebrated with fanfare in Times Square . New York City suffered the bulk of the economic damage and largest loss of human life in the aftermath of the September 11, 2001, attacks . Two of the four airliners hijacked that day were flown into the twin towers of the World Trade Center, resulting in the collapse of both buildings and the deaths of 2,753 people, including 343 first responders from

6592-615: The city's ties to the South and its dominant party. In 1861, Mayor Fernando Wood called on the aldermen to declare independence from Albany and the United States after the South seceded, but his proposal was not acted on. Anger at new military conscription laws during the American Civil War (1861–1865), which spared wealthier men who could afford to hire a substitute, led to the Draft Riots of 1863 , whose most visible participants were ethnic Irish working class. The draft riots deteriorated into attacks on New York's elite, followed by attacks on Black New Yorkers after fierce competition for

6695-456: The colony and allowed for religious freedom. In 1667, during negotiations leading to the Treaty of Breda after the Second Anglo-Dutch War , the victorious Dutch decided to keep the nascent plantation colony of what is now Suriname , which they had gained from the English, and in return the English kept New Amsterdam. The settlement was promptly renamed "New York" after the Duke of York (the future King James II and VII). The duke gave part of

6798-442: The colony to proprietors George Carteret and John Berkeley . On August 24, 1673, during the Third Anglo-Dutch War , Anthony Colve of the Dutch navy seized New York at the behest of Cornelis Evertsen the Youngest and rechristened it "New Orange" after William III , the Prince of Orange . The Dutch soon returned the island to England under the Treaty of Westminster of November 1674. Several intertribal wars among

6901-485: The components, but each building comes with its own requirements like different number of floors, dimensions of the well and usage patterns. Elevator doors prevent riders from falling into, entering, or tampering with anything in the shaft. The most common configuration is to have two panels that meet in the middle and slide open laterally. These are known as "center-opening". In a cascading telescopic configuration (potentially allowing wider entryways within limited space),

7004-408: The cords broke, consisting of a beam pushed outwards by a steel spring. The hydraulic crane was invented by Sir William Armstrong in 1846, primarily for use at the Tyneside docks for loading cargo. They quickly supplanted the earlier steam-driven elevators, exploiting Pascal's law to provide much greater force. A water pump supplied a variable level of water pressure to a plunger encased inside

7107-470: The design because Cooper was confident that a safe passenger elevator would soon be invented. The shaft was cylindrical because Cooper thought it was the most efficient design. Otis later designed a special elevator for the building. Peter Ellis , an English architect, installed the first elevators that could be described as paternoster elevators in Oriel Chambers in Liverpool in 1868. The Equitable Life Building , completed in 1870 in New York City,

7210-417: The development of large housing tracts in eastern Queens and Nassau County , with Wall Street leading America's place as the world's dominant economic power. The United Nations headquarters was completed in 1952, solidifying New York's global geopolitical influence, and the rise of abstract expressionism in the city precipitated New York's displacement of Paris as the center of the art world. In 1969,

7313-409: The doors roll on independent tracks so that while open, they are tucked behind one another, and while closed, they form cascading layers on one side. This can be configured so that two sets of such cascading doors operate like the center opening doors described above, allowing for a very wide elevator cab. In less expensive installations the elevator can also use one large "slab" door: a single panel door

7416-452: The elevator shaft when the car was not being entered or exited. In 1887, American inventor Alexander Miles of Duluth, Minnesota , patented an elevator with automatic doors that closed off the elevator shaft when the car was not being entered or exited. In 1891, American inventors Joseph Kelly and William L. Woods co-patented a novel way to guard elevator shafts against accident, by way of hatches that would automatically open and close as

7519-406: The end of 1790, the national capital was moved to Philadelphia . During the 19th century, New York City's population grew from 60,000 to 3.43 million. Under New York State's gradual emancipation act of 1799, children of slave mothers were to be eventually liberated but to be held in indentured servitude until their mid-to-late twenties. Together with slaves freed by their masters after

7622-499: The entire complex, and four generators for backup power. The Southeast Financial Center can be seen as far away as Ft. Lauderdale and halfway toward Bimini . Night space shuttle launches from Cape Canaveral 200 miles to the north were plainly visible from the higher floors. The roof of the building was featured in the Wesley Snipes motion picture Drop Zone , where an eccentric base jumper named Swoop parachutes down to

7725-482: The equations had now become so complex that it was almost impossible to do manually and it became necessary to use software to run the calculations. The GA formula was extended even further in 1996 to account for double deck elevators. RTT calculations establish an elevator system's handling capacity by using a set of repeatable calculations which, for a given set of inputs, always produce the same answer. It works well for simple systems; but as systems get more complex,

7828-491: The first book devoted to this subject, Elevator Service . The summation of his work was a massive fold-out chart (placed at the back of his book) that allowed users to determine the number of express and local elevators needed for a given building to meet a desired interval of service. In 1912, commercial engineer Edmund F. Tweedy and electrical engineer Arthur Williams co-authored a book titled Commercial Engineering for Central Stations . He followed Bolton's lead and developed

7931-457: The founding of a Dutch fur trading settlement on Governors Island . In 1625, construction was started on a citadel and Fort Amsterdam , later called Nieuw Amsterdam (New Amsterdam), on present-day Manhattan Island. The colony of New Amsterdam extended from the southern tip of Manhattan to modern-day Wall Street , where a 12-foot (3.7 m) wooden stockade was built in 1653 to protect against Native American and English raids. In 1626,

8034-473: The ice (and its subsequent retreat) contributed to the separation of what is now Long Island and Staten Island. That action left bedrock at a relatively shallow depth, providing a solid foundation for most of Manhattan's skyscrapers. The Hudson River flows through the Hudson Valley into New York Bay . Between New York City and Troy, New York , the river is an estuary . The Hudson River separates

8137-818: The idea and technology for multiple elevators in a single shaft. In 1871, when hydraulic power was a well established technology, Edward B. Ellington founded Wharves and Warehouses Steam Power and Hydraulic Pressure Company, which became the London Hydraulic Power Company in 1883. It constructed a network of high-pressure mains on both sides of the Thames which ultimately extended 184 miles (296 km) and powered some 8,000 machines, predominantly elevators and cranes. Schuyler Wheeler patented his electric elevator design in 1883. In 1884, American inventor D. Humphreys of Norfolk, Virginia , patented an elevator with automatic doors that closed off

8240-461: The introduction of steel beam construction, worked together to provide the passenger and freight elevators in use today. Starting in coal mines, elevators in the mid-19th century operated with steam power , and were used for moving goods in bulk in mines and factories. These devices were soon applied to a diverse set of purposes. In 1823, Burton and Homer, two architects in London , built and operated

8343-554: The last American stronghold in Manhattan, causing George Washington and his forces to retreat across the Hudson River to New Jersey , pursued by British forces. After the battle, in which the Americans were defeated, the British made the city their military and political base of operations in North America. The city was a haven for Loyalist refugees and escaped slaves who joined the British lines for freedom promised by

8446-419: The most populous urbanized area in the world in the early 1920s, overtaking London . The metropolitan area surpassed 10 million in the early 1930s, becoming the first megacity . The Great Depression saw the election of reformer Fiorello La Guardia as mayor and the fall of Tammany Hall after eighty years of political dominance. Returning World War II veterans created a post-war economic boom and

8549-556: The mouth of the Hudson River , which feeds into a naturally sheltered harbor and then into the Atlantic Ocean , has helped the city grow in significance as a trading port. Most of the city is built on the three islands of Long Island, Manhattan, and Staten Island. During the Wisconsin glaciation , 75,000 to 11,000 years ago, the New York City area was situated at the edge of a large ice sheet . The erosive forward movement of

8652-401: The office tower and the parking annex. An enclosed walkway connects the second story of the tower with the second story of the annex. The courtyard is partially protected from the elements by a steel and glass space frame canopy spanning the plaza and attached to the tower and annex. The glass space frame canopy was removed between 2020 and 2021. Southeast Bank's executive offices were located on

8755-496: The only " transgender folks around" during the June 1969 Stonewall riots. The transgender community in New York City played a significant role in fighting for LGBT equality. In the 1970s, job losses due to industrial restructuring caused New York City to suffer from economic problems and rising crime rates. Growing fiscal deficits in 1975 led the city to appeal to the federal government for financial aid; President Gerald Ford gave

8858-457: The principles of hydraulics (in the sense of hydraulic power ) to pressurize an above-ground or in-ground piston to raise and lower the car (see Hydraulic elevators below). Roped hydraulics use a combination of both ropes and hydraulic power to raise and lower cars. Recent innovations include permanent magnet motors, machine room-less rail mounted gearless machines, and microprocessor controls. The technology used in new installations depends on

8961-629: The street from a suspended window cleaning trolley. The building also appeared in several episodes of the 1980s TV show Miami Vice and at the end of each episode's opening credits. Zara founder Amancio Ortega purchased the building from J.P. Morgan Asset Management in December 2016. The purchase price was reportedly over $ 500 million, making it one of the largest real estate transactions in South Florida history. New York City New York , often called New York City or NYC ,

9064-412: The theory of probabilities and found a reasonably accurate method of calculating the average stop count. The equation in this article assumed a consistent population on every floor. He went on to write an updated version of his equations in 1926 which accounted for variable population on each floor. Jones credited David Lindquist for the development of the equation but provides no indication as to when it

9167-512: The weight of two lions) 23 feet (7.0 m) up when powered by up to eight men. In 1000, the Book of Secrets by Ibn Khalaf al-Muradi in Islamic Spain described the use of an elevator-like lifting device to raise a large battering ram to destroy a fortress. In the 17th century, prototypes of elevators were installed in the palace buildings of England and France. Louis XV of France had

9270-403: The width of the doorway that opens to the left or right laterally. These are known as "single slide" doors. Some buildings have elevators with the single door on the shaftway, and double cascading doors on the cab. Elevators that do not require separate machine rooms are designed so that most of their power and control components fit within the hoistway (the shaft containing the elevator car), and

9373-529: The world by pinnacle height, with its spire reaching a symbolic 1,776 feet (541.3 m), a reference to the year of U.S. independence . The Occupy Wall Street protests in Zuccotti Park in the Financial District of Lower Manhattan began on September 17, 2011, receiving global attention and popularizing the Occupy movement against social and economic inequality worldwide. New York City

9476-564: The world. In 1664, New York was named in honor of the Duke of York (later King James II of England ). James's elder brother, King Charles II , appointed the Duke as proprietor of the former territory of New Netherland , including the city of New Amsterdam , when the Kingdom of England seized it from Dutch control. In the pre-Columbian era , the area of present-day New York City

9579-422: Was Juan Rodriguez , a merchant from Santo Domingo who arrived in Manhattan during the winter of 1613–14, trapping for pelts and trading with the local population as a representative of the Dutch colonists. A permanent European presence near New York Harbor was established in 1624, making New York the 12th-oldest continuously occupied European-established settlement in the continental United States , with

9682-566: Was heavily affected by Hurricane Sandy in late October 2012. Sandy's impacts included flooding that led to the days-long shutdown of the subway system and flooding of all East River subway tunnels and of all road tunnels entering Manhattan except the Lincoln Tunnel . The New York Stock Exchange closed for two days due to weather for the first time since the Great Blizzard of 1888 . At least 43 people died in New York City as

9785-539: Was a prime destination in the early 20th century for Blacks during the Great Migration from the American South, and by 1916, New York City had the largest urban African diaspora in North America. The Harlem Renaissance of literary and cultural life flourished during the era of Prohibition . The larger economic boom generated construction of skyscrapers competing in height. New York City became

9888-554: Was built by Ivan Kulibin and installed in the Winter Palace in 1793, although there may have been an earlier design by Leonardo da Vinci . Several years later, another of Kulibin's elevators was installed in the Arkhangelskoye near Moscow . The development of elevators was led by the need for movement of raw materials, including coal and lumber , from hillsides. The technology developed by these industries, and

9991-448: Was first proposed. Although the equations were there, elevator traffic analysis was still a very specialist task that could only be done by world experts. That was until 1967 when Strakosch wrote an eight step method for finding the efficiency of a system in "Vertical transportation: Elevators and Escalators". In 1975, Barney and Dos Santos developed and published the "Round Trip Time (RTT) formula", which followed Strakosch's work. This

10094-443: Was formed using hydraulic steel forms, or "flying forms," jacked into place with a "kangaroo" crane, that was located in the core and manually clamped into place. Wide flange beams topped by a metal deck and concrete form the interior floor framing. The core is A braced steel frame, designed to laterally resist wind loads. The construction of one typical floor was completed every five days. The low-rise banking hall and parking building

10197-809: Was founded. The Stamp Act Congress met in New York in October 1765, as the Sons of Liberty organization emerged in the city and skirmished over the next ten years with British troops stationed there. The Battle of Long Island , the largest battle of the American Revolutionary War , was fought in August 1776 within modern-day Brooklyn. A British rout of the Continental Army at the Battle of Fort Washington in November 1776 eliminated

10300-534: Was inhabited by Algonquians , including the Lenape . Their homeland, known as Lenapehoking , included the present-day areas of Staten Island , Manhattan , the Bronx , the western portion of Long Island (including Brooklyn and Queens ), and the Lower Hudson Valley . The first documented visit into New York Harbor by a European was in 1524 by explorer Giovanni da Verrazzano . He claimed

10403-468: Was named New Amsterdam in 1626 and was chartered as a city in 1653. The city came under English control in 1664 and was temporarily renamed New York after King Charles II granted the lands to his brother, the Duke of York , before being permanently renamed New York in November 1674. New York City was the U.S. capital from 1785 until 1790. The modern city was formed by the 1898 consolidation of its five boroughs : Manhattan , Brooklyn , Queens ,

10506-554: Was surpassed by the Four Seasons Hotel and Tower , also in Miami. It remains the tallest office tower in Florida and the fourth tallest building in Miami . Southeast Financial Center was constructed in three years with more than 500 construction workers. Approximately 6,650 tons of structural steel, 80,000 cubic yards of concrete and 7000 cubic tons of reinforcing steel bars went into its construction. The complex sits on

10609-506: Was the first formulized mathematical model and is the simplest form that is still used by traffic analyzers today. Modification and improvements have been made to this equation over the years, most significantly in 2000 when Peters published "Improvements to the Up Peak Round Trip Time Calculation" which improved the accuracy of the flight time calculation, making allowances for short elevator journeys when

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