131-491: One Post Office Square is a 42-floor modern skyscraper in the Financial District section of Boston, Massachusetts . The skyscraper is Boston's 14th-tallest building , standing 525 feet (160 m) tall. The building has exactly 831,975 square feet of Class A office space . An attached, eight-level parking garage offers 368 parking spaces and direct access to the building's lobby. It overlooks Post Office Square Park and
262-587: 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
393-535: 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
524-472: A compromise between the two, combining modernist forms and stylized decoration. The dominant figure in the rise of modernism in France was Charles-Édouard Jeanerette, a Swiss-French architect who in 1920 took the name Le Corbusier . In 1920 he co-founded a journal called ' L'Espirit Nouveau and energetically promoted architecture that was functional, pure, and free of any decoration or historical associations. He
655-426: 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
786-461: 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
917-461: A hotel near Chandler, Arizona , and the most famous of all his residences, Fallingwater (1934–37), a vacation house in Pennsylvania for Edgar J. Kaufman. Fallingwater is a remarkable structure of concrete slabs suspended over a waterfall, perfectly uniting architecture and nature. The Austrian architect Rudolph Schindler designed what could be called the first house in the modern style in 1922,
1048-557: A leading role almost to its end. One of his most original late projects was the campus of Florida Southern College in Lakeland, Florida , begun in 1941 and completed in 1943. He designed nine new buildings in a style that he described as "The Child of the Sun ". He wrote that he wanted the campus to "grow out of the ground and into the light, a child of the sun". Elevator An elevator ( American English ) or lift ( Commonwealth English )
1179-632: A lighthouse-like tower in the center to inspire hope. His rebuilt city was declared a UNESCO World Heritage site in 2005. Shortly after the War, the French architect Le Corbusier , who was nearly sixty years old and had not constructed a building in ten years, was commissioned by the French government to construct a new apartment block in Marseille . He called it Unité d'Habitation in Marseille, but it more popularly took
1310-637: A major exposition of modernist design in Cologne just a few weeks before the outbreak of the First World War in August 1914. For the 1914 Cologne exhibition, Bruno Taut built a revolutionary glass pavilion. Frank Lloyd Wright was a highly original and independent American architect who refused to be categorized in any one architectural movement. Like Le Corbusier and Ludwig Mies van der Rohe , he had no formal architectural training. From 1887 to 1893 he worked in
1441-534: 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
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#17329382775911572-758: A neo-gothic or neoclassical style, but these buildings were very different; they combined modern materials and technology (stainless steel, concrete, aluminum, chrome-plated steel) with Art Deco geometry; stylized zig-zags, lightning flashes, fountains, sunrises, and, at the top of the Chrysler building, Art Deco "gargoyles" in the form of stainless steel radiator ornaments. The interiors of these new buildings, sometimes termed Cathedrals of Commerce", were lavishly decorated in bright contrasting colors, with geometric patterns variously influenced by Egyptian and Mayan pyramids, African textile patterns, and European cathedrals, Frank Lloyd Wright himself experimented with Mayan Revival , in
1703-448: A new architecture. For each function its material; for each material its form and its ornament." This book influenced a generation of architects, including Louis Sullivan , Victor Horta , Hector Guimard , and Antoni Gaudí . At the end of the 19th century, a few architects began to challenge the traditional Beaux Arts and Neoclassical styles that dominated architecture in Europe and
1834-490: A new style for government buildings, sometimes called PWA Moderne , for the Public Works Administration , which launched gigantic construction programs in the U.S. to stimulate employment. It was essentially classical architecture stripped of ornament, and was employed in state and federal buildings, from post offices to the largest office building in the world at that time, Pentagon (1941–43), begun just before
1965-474: A new style. They became leaders in the postwar modernist movement. World War II (1939–1945) and its aftermath was a major factor in driving innovation in building technology, and in turn, architectural possibilities. The wartime industrial demands resulted in shortages of steel and other building materials, leading to the adoption of new materials, such as aluminum, The war and postwar period brought greatly expanded use of prefabricated building ; largely for
2096-571: 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
2227-470: A nursery school, and other serves, and the flat terrace roof had a running track, ventilation ducts, and a small theater. Le Corbusier designed furniture, carpets, and lamps to go with the building, all purely functional; the only decoration was a choice of interior colors that Le Corbusier gave to residents. Unité d'Habitation became a prototype for similar buildings in other cities, both in France and Germany. Combined with his equally radical organic design for
2358-428: A pioneer in the architecture of collective housing , though his Moroccan colleague Elie Azagury was critical of him for serving as a tool of the French colonial regime and for ignoring the economic and social necessity that Moroccans live in higher density vertical housing. Late modernist architecture is generally understood to include buildings designed (1968–1980) with exceptions. Modernist architecture includes
2489-484: A prominent architectural commentator. Its goal was to bring together designers and industrialists, to turn out well-designed, high-quality products, and in the process to invent a new type of architecture. The organization originally included twelve architects and twelve business firms, but quickly expanded. The architects include Peter Behrens , Theodor Fischer (who served as its first president), Josef Hoffmann and Richard Riemerschmid . In 1909 Behrens designed one of
2620-599: A proponent of monumental fascist architecture, who rebuilt the University of Rome, and designed the Italian pavilion at the 1937 Paris Exposition, and planned a grand reconstruction of Rome on the fascist model. The 1939 New York World's Fair marked a turning point in architecture between Art Deco and modern architecture. The theme of the Fair was the World of Tomorrow , and its symbols were
2751-452: A row of white pylons in the center of a large lawn, it became an icon of modernist architecture. In Germany, two important modernist movements appeared after the first World War, The Bauhaus was a school founded in Weimar in 1919 under the direction of Walter Gropius . Gropius was the son of the official state architect of Berlin, who studied before the war with Peter Behrens , and designed
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#17329382775912882-570: 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
3013-455: 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
3144-514: A study of Casablanca's bidonvilles entitled "Habitat for the Greatest Number". The presenters, Georges Candilis and Michel Ecochard , argued—against doctrine—that architects must consider local culture and climate in their designs. This generated great debate among modernist architects around the world and eventually provoked a schism and the creation of Team 10 . Ecochard's 8x8 meter model at Carrières Centrales earned him recognition as
3275-572: 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
3406-408: A temporary halt to the construction of new skyscrapers. It also brought in a new style, called " Streamline Moderne " or sometimes just Streamline. This style, sometimes modeled after for the form of ocean liners, featured rounded corners, strong horizontal lines, and often nautical features, such as superstructures and steel railings. It was associated with modernity and especially with transportation;
3537-420: 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
3668-409: 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
3799-457: Is a machine for living in." He tirelessly promoted his ideas through slogans, articles, books, conferences, and participation in Expositions. To illustrate his ideas, in the 1920s he built a series of houses and villas in and around Paris. They were all built according to a common system, based upon the use of reinforced concrete, and of reinforced concrete pylons in the interior which supported
3930-689: 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 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
4061-711: Is a name often given to the Modern architecture that emerged in Europe, primarily German-speaking Europe, in the 1920s and 30s. It is also frequently called Neues Bauen (New Building). The New Objectivity took place in many German cities in that period, for example in Frankfurt with its Neues Frankfurt project. By the late 1920s, modernism had become an important movement in Europe. Architecture, which previously had been predominantly national, began to become international. The architects traveled, met each other, and shared ideas. Several modernists, including Le Corbusier , had participated in
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4192-426: 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
4323-433: Is controlled by an automated, Energy Management System for maximum comfort and efficiency. The building is connected to the adjoining Langham Hotel at ground level by a private passageway. In 2018, the building began renovations to update the exterior of the building and add additional space. The project is set to be complete in 2021. Modern architecture Modern architecture , also called modernist architecture ,
4454-446: 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
4585-514: 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
4716-482: Is known as Brick Expressionism . Erich Mendelsohn , (who disliked the term Expressionism for his work) began his career designing churches, silos, and factories which were highly imaginative, but, for lack of resources, were never built. In 1920, he finally was able to construct one of his works in the city of Potsdam; an observatory and research center called the Einsteinium , named in tribute to Albert Einstein . It
4847-571: 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
4978-641: The Austrian Postal Savings Bank (1904–1906). Wagner declared his intention to express the function of the building in its exterior. The reinforced concrete exterior was covered with plaques of marble attached with bolts of polished aluminum. The interior was purely functional and spare, a large open space of steel, glass, and concrete where the only decoration was the structure itself. The Viennese architect Adolf Loos also began removing any ornament from his buildings. His Steiner House , in Vienna (1910),
5109-451: The Carson, Pirie, Scott and Company Building , in the heart of Chicago in 1904–1906. While these buildings were revolutionary in their steel frames and height, their decoration was borrowed from Neo-Renaissance , Neo-Gothic and Beaux-Arts architecture . The Woolworth Building , designed by Cass Gilbert , was completed in 1912, and was the tallest building in the world until the completion of
5240-602: The Chapel of Notre-Dame du-Haut at Ronchamp , this work propelled Corbusier in the first rank of postwar modern architects. In the early 1950s, Michel Écochard , director of urban planning under the French Protectorate in Morocco , commissioned GAMMA ( Groupe des Architectes Modernes Marocains )—which initially included the architects Elie Azagury , George Candillis , Alexis Josic and Shadrach Woods —to design housing in
5371-532: The Chrysler Building in 1929. The structure was purely modern, but its exterior was decorated with Neo-Gothic ornament, complete with decorative buttresses, arches and spires, which caused it to be nicknamed the "Cathedral of Commerce". After the first World War, a prolonged struggle began between architects who favored the more traditional styles of neo-classicism and the Beaux-Arts architecture style, and
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5502-638: The Hay Mohammedi neighborhood of Casablanca that provided a "culturally specific living tissue" for laborers and migrants from the countryside . Sémiramis , Nid d’Abeille (Honeycomb), and Carrières Centrales were some of the first examples of this Vernacular Modernism . At the 1953 Congrès Internationaux d'Architecture Moderne (CIAM), ATBAT-Afrique —the Africa branch of Atelier des Bâtisseurs founded in 1947 by figures including Le Corbusier , Vladimir Bodiansky , and André Wogenscky —prepared
5633-501: The IG Farben building , a massive corporate headquarters, now the main building of Goethe University in Frankfurt. Bruno Taut specialized in building large-scale apartment complexes for working-class Berliners. He built twelve thousand individual units, sometimes in buildings with unusual shapes, such as a giant horseshoe. Unlike most other modernists, he used bright exterior colors to give his buildings more life The use of dark brick in
5764-510: The New York Crystal Palace exposition in 1854, which made tall office and apartment buildings practical. Another important technology for the new architecture was electric light, which greatly reduced the inherent danger of fires caused by gas in the 19th century. The debut of new materials and techniques inspired architects to break away from the neoclassical and eclectic models that dominated European and American architecture in
5895-673: The Palais de Tokyo and Palais de Chaillot , both built by collectives of architects for the 1937 Paris Exposition Internationale des Arts et Techniques dans la Vie Moderne . In the late 1920s and early 1930s, an exuberant American variant of Art Deco appeared in the Chrysler Building , Empire State Building and Rockefeller Center in New York City, and Guardian Building in Detroit. The first skyscrapers in Chicago and New York had been designed in
6026-576: The Russian Revolution of 1917, Russian avant-garde artists and architects began searching for a new Soviet style which could replace traditional neoclassicism. The new architectural movements were closely tied with the literary and artistic movements of the period, the futurism of poet Vladimir Mayakovskiy , the Suprematism of painter Kasimir Malevich , and the colorful Rayonism of painter Mikhail Larionov . The most startling design that emerged
6157-476: 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
6288-569: The 1920s and 1930s it became a highly popular style in the United States, South America, India, China, Australia, and Japan. In Europe, Art Deco was particularly popular for department stores and movie theaters. The style reached its peak in Europe at the International Exhibition of Modern Decorative and Industrial Arts in 1925, which featured art deco pavilions and decoration from twenty countries. Only two pavilions were purely modernist;
6419-566: The 1950s and 1960s. The group met once more in Paris in 1937 to discuss public housing and was scheduled to meet in the United States in 1939, but the meeting was cancelled because of the war. The legacy of the CIAM was a roughly common style and doctrine which helped define modern architecture in Europe and the United States after World War II. The Art Deco architectural style (called Style Moderne in France),
6550-610: The Chicago office of Louis Sullivan , who pioneered the first tall steel-frame office buildings in Chicago, and who famously stated " form follows function ". Wright set out to break all the traditional rules. He was particularly famous for his Prairie Houses , including the Winslow House in River Forest, Illinois (1893–94); Arthur Heurtley House (1902) and Robie House (1909); sprawling, geometric residences without decoration, with strong horizontal lines which seemed to grow out of
6681-751: The Esprit Nouveau pavilion of Le Corbusier, which represented his idea for a mass-produced housing unit, and the pavilion of the USSR, by Konstantin Melnikov in a flamboyantly futurist style. Later French landmarks in the Art Deco style included the Grand Rex movie theater in Paris, La Samaritaine department store by Henri Sauvage (1926–28) and the Social and Economic Council building in Paris (1937–38) by Auguste Perret , and
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#17329382775916812-684: The German Werkbund, and became the head of the Bauhaus from 1930 to 1933. proposing a wide variety of modernist plans for urban reconstruction. His most famous modernist work was the German pavilion for the 1929 international exposition in Barcelona. It was a work of pure modernism, with glass and concrete walls and clean, horizontal lines. Though it was only a temporary structure, and was torn down in 1930, it became, along with Le Corbusier's Villa Savoye , one of
6943-475: The German projects gave that particular style a name, Brick Expressionism . The Austrian philosopher, architect, and social critic Rudolf Steiner also departed as far as possible from traditional architectural forms. His Second Goetheanum , built from 1926 near Basel , Switzerland and Mendelsohn 's Einsteinturm in Potsdam, Germany, were based on no traditional models and had entirely original shapes. After
7074-549: The Netherlands, and Adolf Loos from Czechoslovakia. A delegation of Soviet architects was invited to attend, but they were unable to obtain visas. Later members included Josep Lluís Sert of Spain and Alvar Aalto of Finland. No one attended from the United States. A second meeting was organized in 1930 in Brussels by Victor Bourgeois on the topic "Rational methods for groups of habitations". A third meeting, on "The functional city",
7205-569: 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
7336-779: The Schindler house. Schindler also contributed to American modernism with his design for the Lovell Beach House in Newport Beach . The Austrian architect Richard Neutra moved to the United States in 1923, worked for a short time with Frank Lloyd Wright, also quickly became a force in American architecture through his modernist design for the same client, the Lovell Health House in Los Angeles. Neutra's most notable architectural work
7467-520: The Soviet Pavilion for the International Exhibition of Modern Decorative and Industrial Arts in Paris in 1925; it was a highly geometric vertical construction of glass and steel crossed by a diagonal stairway, and crowned with a hammer and sickle. The leading group of constructivist architects, led by Vesnin brothers and Moisei Ginzburg , was publishing the 'Contemporary Architecture' journal. This group created several major constructivist projects in
7598-798: The Spanish architect, whose pavilion of the Second Spanish Republic was pure modernist glass and steel box. Inside it displayed the most modernist work of the Exposition, the painting Guernica by Pablo Picasso . The original building was destroyed after the Exposition, but it was recreated in 1992 in Barcelona. The rise of nationalism in the 1930s was reflected in the Fascist architecture of Italy, and Nazi architecture of Germany, based on classical styles and designed to express power and grandeur. The Nazi architecture, much of it designed by Albert Speer ,
7729-487: The United States entered the Second World War. During the 1920s and 1930s, Frank Lloyd Wright resolutely refused to associate himself with any architectural movements. He considered his architecture to be entirely unique and his own. Between 1916 and 1922, he broke away from his earlier prairie house style and worked instead on houses decorated with textured blocks of cement; this became known as his "Mayan style", after
7860-451: The United States led to the design and construction of enormous government-financed housing projects, usually in run-down center of American cities, and in the suburbs of Paris and other European cities, where land was available, One of the largest reconstruction projects was that of the city center of Le Havre, destroyed by the Germans and by Allied bombing in 1944; 133 hectares of buildings in
7991-469: The United States. The Glasgow School of Art (1896–99) designed by Charles Rennie Mackintosh , had a façade dominated by large vertical bays of windows. The Art Nouveau style was launched in the 1890s by Victor Horta in Belgium and Hector Guimard in France; it introduced new styles of decoration, based on vegetal and floral forms. In Barcelona, Antonio Gaudi conceived architecture as a form of sculpture;
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#17329382775918122-549: The best-known landmarks of modernist architecture. A reconstructed version now stands on the original site in Barcelona. When the Nazis came to power in Germany, they viewed the Bauhaus as a training ground for communists, and closed the school in 1933. Gropius left Germany and went to England, then to the United States, where he and Marcel Breuer both joined the faculty of the Harvard Graduate School of Design , and became
8253-637: The buildings designed between 1945 and the 1960s. The late modernist style is characterized by bold shapes and sharp corners, slightly more defined than Brutalist architecture . The International Style of architecture had appeared in Europe, particularly in the Bauhaus movement, in the late 1920s. In 1932 it was recognized and given a name at an Exhibition at the Museum of Modern Art in New York City organized by architect Philip Johnson and architectural critic Henry-Russell Hitchcock , Between 1937 and 1941, following
8384-500: 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
8515-610: 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
8646-462: The center of the fast-growing American cities, and the availability of new technologies, including fireproof steel frames and improvements in the safety elevator invented by Elisha Otis in 1852. The first steel-framed "skyscraper", The Home Insurance Building in Chicago, was ten stories high. It was designed by William Le Baron Jenney in 1883, and was briefly the tallest building in the world. Louis Sullivan built another monumental new structure,
8777-409: The center were flattened, destroying 12,500 buildings and leaving 40,000 persons homeless. The architect Auguste Perret , a pioneer in the use of reinforced concrete and prefabricated materials, designed and built an entirely new center to the city, with apartment blocks, cultural, commercial, and government buildings. He restored historic monuments when possible, and built a new church, St. Joseph, with
8908-520: The competition for the headquarters of the League of Nations in 1927. In the same year, the German Werkbund organized an architectural exposition at the Weissenhof Estate Stuttgart . Seventeen leading modernist architects in Europe were invited to design twenty-one houses; Le Corbusier, and Ludwig Mies van der Rohe played a major part. In 1927 Le Corbusier, Pierre Chareau, and others proposed
9039-485: 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),
9170-421: The concrete cube-based Ennis House of 1924 in Los Angeles. The style appeared in the late 1920s and 1930s in all major American cities. The style was used most often in office buildings, but it also appeared in the enormous movie palaces that were built in large cities when sound films were introduced. The beginning of the Great Depression in 1929 brought an end to lavishly decorated Art Deco architecture and
9301-404: The construction of clusters of slender eight- to ten-story high-rise apartment towers for workers. While Gropius was active at the Bauhaus, Ludwig Mies van der Rohe led the modernist architectural movement in Berlin. Inspired by the De Stijl movement in the Netherlands, he built clusters of concrete summer houses and proposed a project for a glass office tower. He became the vice president of
9432-458: 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
9563-578: 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,
9694-454: The designer Marcel Breuer . Gropius became an important theorist of modernism, writing The Idea and Construction in 1923. He was an advocate of standardization in architecture, and the mass construction of rationally designed apartment blocks for factory workers. In 1928 he was commissioned by the Siemens company to build apartment for workers in the suburbs of Berlin, and in 1929 he proposed
9825-409: 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
9956-573: The earliest and most influential industrial buildings in the modernist style, the AEG turbine factory , a functional monument of steel and concrete. In 1911–1913, Adolf Meyer and Walter Gropius , who had both worked for Behrens, built another revolutionary industrial plant, the Fagus Factory in Alfeld an der Laine, a building without ornament where every construction element was on display. The Werkbund organized
10087-592: The earth, and which echoed the wide flat spaces of the American prairie. His Larkin Building (1904–1906) in Buffalo, New York , Unity Temple (1905) in Oak Park, Illinois and Unity Temple had highly original forms and no connection with historical precedents. At the end of the 19th century, the first skyscrapers began to appear in the United States. They were a response to the shortage of land and high cost of real estate in
10218-452: 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
10349-436: The end of the 19th century from revolutions in technology, engineering, and building materials, and from a desire to break away from historical architectural styles and invent something that was purely functional and new. The revolution in materials came first, with the use of cast iron , drywall , plate glass , and reinforced concrete, to build structures that were stronger, lighter, and taller. The cast plate glass process
10480-482: 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,
10611-668: The façade of the Casa Batlló in Barcelona (1904–1907) had no straight lines; it was encrusted with colorful mosaics of stone and ceramic tiles. Architects also began to experiment with new materials and techniques, which gave them greater freedom to create new forms. In 1903–1904 in Paris Auguste Perret and Henri Sauvage began to use reinforced concrete , previously only used for industrial structures, to build apartment buildings. Reinforced concrete, which could be molded into any shape, and which could create enormous spaces without
10742-491: 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
10873-731: The foundation of an international conference to establish the basis for a common style. The first meeting of the Congrès Internationaux d'Architecture Moderne or International Congresses of Modern Architects (CIAM), was held in a chateau on Lake Leman in Switzerland 26–28 June 1928. Those attending included Le Corbusier, Robert Mallet-Stevens , Auguste Perret , Pierre Chareau and Tony Garnier from France; Victor Bourgeois from Belgium; Walter Gropius , Erich Mendelsohn , Ernst May and Ludwig Mies van der Rohe from Germany; Josef Frank from Austria; Mart Stam and Gerrit Rietveld from
11004-779: The headquarters of a shipping company, and was modeled after a giant steamship, a triangular building with a sharply pointed bow. It was constructed of dark brick, and used external piers to express its vertical structure. Its external decoration borrowed from Gothic cathedrals, as did its internal arcades. Hans Poelzig was another notable expressionist architect. In 1919 he built the Großes Schauspielhaus , an immense theater in Berlin, seating five thousand spectators for theater impresario Max Reinhardt . It featured elongated shapes like stalagmites hanging down from its gigantic dome, and lights on massive columns in its foyer. He also constructed
11135-802: 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
11266-400: The industrialization many constructivist buildings were erected in provincial cities. The regional industrial centers, including Ekaterinburg , Kharkiv or Ivanovo , were rebuilt in the constructivist manner; some cities, like Magnitogorsk or Zaporizhzhia , were constructed anew (the so-called socgorod , or 'socialist city'). The style fell markedly out of favor in the 1930s, replaced by
11397-457: 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
11528-470: The late 19th century, most notably eclecticism , Victorian and Edwardian architecture , and the Beaux-Arts architectural style . This break with the past was particularly urged by the architectural theorist and historian Eugène Viollet-le-Duc . In his 1872 book Entretiens sur L'Architecture , he urged: "use the means and knowledge given to us by our times, without the intervening traditions which are no longer viable today, and in that way we can inaugurate
11659-449: The military and government. The semi-circular metal Nissen hut of World War I was revived as the Quonset hut . The years immediately after the war saw the development of radical experimental houses, including the enameled-steel Lustron house (1947–1950), and Buckminster Fuller's experimental aluminum Dymaxion House . The unprecedented destruction caused by the war was another factor in
11790-451: The modernist Fagus turbine factory. The Bauhaus was a fusion of the prewar Academy of Arts and the school of technology. In 1926 it was transferred from Weimar to Dessau; Gropius designed the new school and student dormitories in the new, purely functional modernist style he was encouraging. The school brought together modernists in all fields; the faculty included the modernist painters Vasily Kandinsky , Joseph Albers and Paul Klee , and
11921-476: The modernists, led by Le Corbusier and Robert Mallet-Stevens in France, Walter Gropius and Ludwig Mies van der Rohe in Germany, and Konstantin Melnikov in the new Soviet Union , who wanted only pure forms and the elimination of any decoration. Louis Sullivan popularized the axiom Form follows function to emphasize the importance of utilitarian simplicity in modern architecture. Art Deco architects such as Auguste Perret and Henri Sauvage often made
12052-737: The more grandiose nationalist styles that Stalin favored. Constructivist architects and even Le Corbusier projects for the new Palace of the Soviets from 1931 to 1933, but the winner was an early Stalinist building in the style termed Postconstructivism . The last major Russian constructivist building, by Boris Iofan , was built for the Paris World Exhibition (1937), where it faced the pavilion of Nazi Germany by Hitler's architect Albert Speer . The New Objectivity (in German Neue Sachlichkeit, sometimes also translated as New Sobriety)
12183-434: The most innovative expressionist projects, including Bruno Taut 's Alpine Architecture and Hermann Finsterlin 's Formspiels , remained on paper. Scenography for theatre and films provided another outlet for the expressionist imagination, and provided supplemental incomes for designers attempting to challenge conventions in a harsh economic climate. A particular type, using bricks to create its forms (rather than concrete)
12314-537: The name of the Cité Radieuse (and later "Cité du Fada" "City of the crazy one" in Marseille French), after his book about futuristic urban planning. Following his doctrines of design, the building had a concrete frame raised up above the street on pylons. It contained 337 duplex apartment units, fit into the framework like pieces of a puzzle. Each unit had two levels and a small terrace. Interior "streets" had shops,
12445-504: The need of supporting pillars, replaced stone and brick as the primary material for modernist architects. The first concrete apartment buildings by Perret and Sauvage were covered with ceramic tiles, but in 1905 Perret built the first concrete parking garage on 51 rue de Ponthieu in Paris; here the concrete was left bare, and the space between the concrete was filled with glass windows. Henri Sauvage added another construction innovation in an apartment building on Rue Vavin in Paris (1912–1914);
12576-507: The pavilion of the Soviet Union, topped by enormous statues of a worker and a peasant carrying a hammer and sickle. As to the modernists, Le Corbusier was practically, but not quite invisible at the Exposition; he participated in the Pavilion des temps nouveaux, but focused mainly on his painting. The one modernist who did attract attention was a collaborator of Le Corbusier, Josep Lluis Sert ,
12707-457: 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
12838-521: The purely geometric trylon and periphery sculpture. It had many monuments to Art Deco, such as the Ford Pavilion in the Streamline Moderne style, but also included the new International Style that would replace Art Deco as the dominant style after the War. The Pavilions of Finland, by Alvar Aalto , of Sweden by Sven Markelius , and of Brazil by Oscar Niemeyer and Lúcio Costa , looked forward to
12969-479: The pyramids of the ancient Mayan civilization. He experimented for a time with modular mass-produced housing. He identified his architecture as "Usonian", a combination of USA, "utopian" and "organic social order". His business was severely affected by the beginning of the Great Depression that began in 1929; he had fewer wealthy clients who wanted to experiment. Between 1928 and 1935, he built only two buildings:
13100-458: The reinforced concrete building was in steps, with each floor set back from the floor below, creating a series of terraces. Between 1910 and 1913, Auguste Perret built the Théâtre des Champs-Élysées , a masterpiece of reinforced concrete construction, with Art Deco sculptural bas-reliefs on the façade by Antoine Bourdelle . Because of the concrete construction, no columns blocked the spectator's view of
13231-466: The rise Hitler and the Nazis in Germany, most of the leaders of the German Bauhaus movement found a new home in the United States, and played an important part in the development of American modern architecture. Frank Lloyd Wright was eighty years old in 1947; he had been present at the beginning of American modernism, and though he refused to accept that he belonged to any movement, continued to play
13362-444: The rise of modern architecture. Large parts of major cities, from Berlin, Tokyo, and Dresden to Rotterdam and east London; all the port cities of France, particularly Le Havre , Brest, Marseille, Cherbourg had been destroyed by bombing. In the United States, little civilian construction had been done since the 1920s; housing was needed for millions of American soldiers returning from the war. The postwar housing shortages in Europe and
13493-442: The roots of the movement were to be found in the works of Eugène Viollet le duc , while Mies van der Rohe was heavily inspired by Karl Friedrich Schinkel . The movement emerged in the first half of the 20th century and became dominant after World War II until the 1980s, when it was gradually replaced as the principal style for institutional and corporate buildings by postmodern architecture . Modern architecture emerged at
13624-446: The spirit of Italian Rationalism of the 1920s continued, with the work of architect Giuseppe Terragni . His Casa del Fascio in Como, headquarters of the local Fascist party, was a perfectly modernist building, with geometric proportions (33.2 meters long by 16.6 meters high), a clean façade of marble, and a Renaissance-inspired interior courtyard. Opposed to Terragni was Marcello Piacitini,
13755-437: The stage. Otto Wagner , in Vienna, was another pioneer of the new style. In his book Moderne Architektur (1895) he had called for a more rationalist style of architecture, based on "modern life". He designed a stylized ornamental metro station at Karlsplatz in Vienna (1888–89), then an ornamental Art Nouveau residence, Majolika House (1898), before moving to a much more geometric and simplified style, without ornament, in
13886-529: The structure, allowing glass curtain walls on the façade and open floor plans, independent of the structure. They were always white, and had no ornament or decoration on the outside or inside. The best-known of these houses was the Villa Savoye , built in 1928–1931 in the Paris suburb of Poissy . An elegant white box wrapped with a ribbon of glass windows around on the façade, with living space that opened upon an interior garden and countryside around, raised up by
14017-459: The style was often used for new airport terminals, train and bus stations, and for gas stations and diners built along the growing American highway system. In the 1930s the style was used not only in buildings, but in railroad locomotives, and even refrigerators and vacuum cleaners. It both borrowed from industrial design and influenced it. In the United States, the Great Depression led to
14148-490: The teachers of a generation of American postwar architects. In 1937 Mies van der Rohe also moved to the United States; he became one of the most famous designers of postwar American skyscrapers. Expressionism , which appeared in Germany between 1910 and 1925, was a counter-movement against the strictly functional architecture of the Bauhaus and Werkbund. Its advocates, including Bruno Taut , Hans Poelzig , Fritz Hoger and Erich Mendelsohn , wanted to create architecture that
14279-412: 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
14410-591: The wake of the First Five Year Plan – including colossal Dnieper Hydroelectric Station (1932) – and made an attempt to start the standardization of living blocks with Ginzburg's Narkomfin building . A number of architects from the pre-Soviet period also took up the constructivist style. The most famous example was Lenin's Mausoleum in Moscow (1924), by Alexey Shchusev (1924) The main centers of constructivist architecture were Moscow and Leningrad; however, during
14541-501: 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
14672-403: 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
14803-436: The works of Viollet le Duc. French industrialist François Coignet was the first to use iron-reinforced concrete, that is, concrete strengthened with iron bars, as a technique for constructing buildings. In 1853 Coignet built the first iron reinforced concrete structure, a four-storey house in the suburbs of Paris. A further important step forward was the invention of the safety elevator by Elisha Otis , first demonstrated at
14934-456: Was a prototype for the modernist office buildings that followed. (It was torn down in 1957, because it stood in the zone between East and West Berlin, where the Berlin Wall was constructed.) Following the rise of the Nazis to power, he moved to England (1933), then to the United States (1941). Fritz Höger was another notable Expressionist architect of the period. His Chilehaus was built as
15065-454: Was also a passionate advocate of a new urbanism, based on planned cities. In 1922 he presented a design of a city for three million people, whose inhabitants lived in identical sixty-story tall skyscrapers surrounded by open parkland. He designed modular houses, which would be mass-produced on the same plan and assembled into apartment blocks, neighborhoods, and cities. In 1923 he published "Toward an Architecture", with his famous slogan, "a house
15196-457: Was an architectural movement and style that was prominent in the 20th century, between the earlier Art Deco and later postmodern movements. Modern architecture was based upon new and innovative technologies of construction (particularly the use of glass , steel , and concrete ); the principle functionalism (i.e. that form should follow function ); an embrace of minimalism ; and a rejection of ornament . According to Le Corbusier ,
15327-559: Was an example of what he called rationalist architecture ; it had a simple stucco rectangular façade with square windows and no ornament. The fame of the new movement, which became known as the Vienna Secession spread beyond Austria. Josef Hoffmann , a student of Wagner, constructed a landmark of early modernist architecture, the Stoclet Palace , in Brussels, in 1906–1911. This residence, built of brick covered with Norwegian marble,
15458-540: 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
15589-481: Was composed of geometric blocks, wings, and a tower. A large pool in front of the house reflected its cubic forms. The interior was decorated with paintings by Gustav Klimt and other artists, and the architect even designed clothing for the family to match the architecture. In Germany, a modernist industrial movement, Deutscher Werkbund (German Work Federation) had been created in Munich in 1907 by Hermann Muthesius ,
15720-514: Was designed by Jung Brannen Associates . A previous building on the site at 101 Milk Street was the headquarters of the Boston Elevated Railway until about 1919. The exterior is modern style sculpted tower that consists of a steel frame with a concrete aggregate facade. The three-story lobby is finished in patterned Rosso Verona and travertine marble walls and floors accented with mirror bronze signage, hand rails, and window bands. HVAC
15851-448: 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
15982-441: Was intended to awe the spectators by its huge scale. Adolf Hitler intended to turn Berlin into the capital of Europe, grander than Rome or Paris. The Nazis closed the Bauhaus, and the most prominent modern architects soon departed for Britain or the United States. In Italy, Benito Mussolini wished to present himself as the heir to the glory and empire of ancient Rome. Mussolini's government was not as hostile to modernism as The Nazis;
16113-501: Was invented in 1848, allowing the manufacture of very large windows. The Crystal Palace by Joseph Paxton at the Great Exhibition of 1851 was an early example of iron and plate glass construction, followed in 1864 by the first glass and metal curtain wall . These developments together led to the first steel-framed skyscraper, the ten-story Home Insurance Building in Chicago, built in 1884 by William Le Baron Jenney and based on
16244-513: Was modern, but it was not modernist; it had many features of modernism, including the use of reinforced concrete, glass, steel, chrome, and it rejected traditional historical models, such as the Beaux-Arts style and Neo-classicism ; but, unlike the modernist styles of Le Corbusier and Mies van der Rohe, it made lavish use of decoration and color. It reveled in the symbols of modernity; lightning flashes, sunrises, and zig-zags. Art Deco had begun in France before World War I and spread through Europe; in
16375-517: Was poetic, expressive, and optimistic. Many expressionist architects had fought in World War I and their experiences, combined with the political turmoil and social upheaval that followed the German Revolution of 1919, resulted in a utopian outlook and a romantic socialist agenda. Economic conditions severely limited the number of built commissions between 1914 and the mid-1920s, As result, many of
16506-424: Was scheduled for Moscow in 1932, but was cancelled at the last minute. Instead, the delegates held their meeting on a cruise ship traveling between Marseille and Athens. On board, they together drafted a text on how modern cities should be organized. The text, called The Athens Charter , after considerable editing by Corbusier and others, was finally published in 1957 and became an influential text for city planners in
16637-531: Was supposed to be built of reinforced concrete, but because of technical problems it was finally built of traditional materials covered with plaster. His sculptural form, very different from the austere rectangular forms of the Bauhaus, first won him commissions to build movie theaters and retail stores in Stuttgart, Nuremberg, and Berlin. His Mossehaus in Berlin was an early model for the streamline moderne style. His Columbushaus on Potsdamer Platz in Berlin (1931)
16768-512: Was the Kaufmann Desert House in 1946, and he designed hundreds of further projects. The 1937 Paris International Exposition in Paris effectively marked the end of the Art Deco, and of pre-war architectural styles. Most of the pavilions were in a neoclassical Deco style, with colonnades and sculptural decoration. The pavilions of Nazi Germany, designed by Albert Speer , in a German neoclassical style topped by eagle and swastika, faced
16899-492: 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
17030-500: Was the tower proposed by painter and sculptor Vladimir Tatlin for the Moscow meeting of the Third Communist International in 1920: he proposed two interlaced towers of metal four hundred meters high, with four geometric volumes suspended from cables. The movement of Russian Constructivist architecture was launched in 1921 by a group of artists led by Aleksandr Rodchenko . Their manifesto proclaimed that their goal
17161-504: Was to find the "communist expression of material structures". Soviet architects began to construct workers' clubs, communal apartment houses, and communal kitchens for feeding whole neighborhoods. One of the first prominent constructivist architects to emerge in Moscow was Konstantin Melnikov , the number of working clubs – including Rusakov Workers' Club (1928) – and his own living house, Melnikov House (1929) near Arbat Street in Moscow. Melnikov traveled to Paris in 1925 where he built
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