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A keystone (or capstone ) is the wedge-shaped stone at the apex of a masonry arch or typically round-shaped one at the apex of a vault . In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to bear weight. In arches and vaults (such as quasi-domes) keystones are often enlarged beyond the structural requirements and decorated. A variant in domes and crowning vaults is a lantern . A portion of the arch surrounding the keystone is called a crown .

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28-497: (Redirected from Key Stone ) [REDACTED] Look up keystone in Wiktionary, the free dictionary. Keystone or key-stone may refer to: Keystone (architecture) , a central stone or other piece at the apex of an arch or vault Keystone (cask) , a fitting used in ale casks Companies [ edit ] Keystone Law , a full-service law firm Digital Keystone ,

56-419: A boss . A "dropped keystone" is one where the keystone projects lower than the other voussoirs. Following Giulio Romano , Mannerist architects of the 16th century often designed arches with enlarged and slightly dropped keystones, as in the "church house" entrance portal at Colditz Castle . Numerous examples are found in the work of Sebastiano Serlio , a 16th-century Italian Mannerist architect. Keystone

84-650: A nickname for the Province of Manitoba Keystone Centre , an arena and exhibition centre in Brandon, Manitoba Fictional locations [ edit ] Keystone City , home of the comic book character The Flash Keystone City, a holographic city in the Star Trek: The Next Generation episode " Emergence " Railroads [ edit ] Keystone Corridor , a rail corridor from Philadelphia to Pittsburgh Keystone Service ,

112-710: A current New York-Harrisburg service Keystone (Amtrak train, 1979–1981) , a predecessor of the current service Keystone (Amtrak train, 1971–1972) , a former New York-Pittsburgh service operated by Amtrak Keystone , a former New York-Washington service operated by the Pennsylvania Railroad Keystone (train) , a lightweight train used for the service Sports [ edit ] Keystone Junior Hockey League , in Manitoba Keystone Cup , Western Canadian Junior "B" ice hockey championship Keystone (horse) ,

140-744: A defunct music club Education [ edit ] Keystone Academy , a private K–12 school in Shunyi, Beijing, China Keystone College , a private college in Pennsylvania, United States Keystone Exam , a standardized test at public schools in Pennsylvania, United States Keystone School , a private K–12 school in San Antonio, Texas, United States Keystone School Online , a private for-profit online K–12 school based in Herndon, Virginia, United States Keystone, an education program at

168-453: A developer of digital entertainment software Keystone Aircraft Corporation Keystone Bridge Company , an American bridge building company Keystone (beer brand) Keystone Camera Company Keystone (gasoline automobile) Keystone (steam automobile) Keystone Pipeline , a crude oil pipeline Keystone-SDA/Keystone-ATS , a Swiss press agency Keystone View Company , a US photo agency Keystone (Berkeley, California) ,

196-1077: A larger effect on their environment than is purely due to their abundance Operation Keystone , during World War II Keystone, a variety of screwdriver blade "Keystone", a descriptive reference to the Book of Mormon The Keystone , journal of the Pennsylvania Railroad Technical and Historical Society The Keystone , Pennsylvania news website owned by Courier Newsroom See also [ edit ] [REDACTED] Search for "keystone"  or "key-stone" on Misplaced Pages. All pages with titles containing key-stones All pages with titles containing key-stone All pages with titles containing keystones All pages with titles containing keystone Stone (disambiguation) Key (disambiguation) The Stone Key (2008 novel) post-apocalyptic novel by Isobelle Carmody Stone Key Partners (bank) U.S. boutique investment bank Topics referred to by

224-505: A racehorse Other uses [ edit ] Keystone (limestone) , quarried in the Florida Keys Keystone effect , caused by projecting an image onto a surface at an angle, or by photography at an angle Keystone Initiative , a medical protocol to reduce infection rates Keystone module , a type of data connector mounted in walls and patch panels Keystone Press Awards Keystone species , species that have

252-663: A town near Mount Rushmore Keystone, West Virginia Keystone, Wyoming Keystone at the Crossing , a business/shopping district in Indianapolis, Indiana The Fashion Mall at Keystone , located in the Keystone shopping district Keystone Heights, Florida Keystone Canyon , Alaska Keystone Lake , a resort area near Tulsa, Oklahoma Keystone, Wisconsin Canada [ edit ] The "Keystone Province",

280-438: Is different from Wikidata All article disambiguation pages All disambiguation pages Keystone (architecture) Keystones or their suggested form are sometimes placed for decorative effect in the centre of the flat top of doors, recesses and windows, so as to form an upward projection of a lintel , as a hallmark of strength or good architecture. Although a masonry arch or vault cannot be self-supporting until

308-480: Is often used metaphorically for an essential part on which the whole depends or as an acme of the whole. The U.S. state of Pennsylvania calls itself the "Keystone State", because during early American history, it held a crucial central position among the Thirteen Colonies geographically, economically, and politically, like the keystone in an arch. A keystone is a symbol of Pennsylvania, being used in

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336-475: The Hercules constellation United States [ edit ] The "Keystone State", nickname for the U.S. Commonwealth of Pennsylvania Keystone, Colorado , a town Keystone Resort , the related ski resort Keystone, Florida , an unincorporated community Keystone, Indiana Keystone, Iowa Keystone, Nebraska Keystone, North Dakota Keystone, Ohio Keystone, South Dakota ,

364-580: The Book of Mormon may become the keystone of our lives." [REDACTED] Media related to keystones at Wikimedia Commons Keystone, West Virginia Keystone is a city in McDowell County , West Virginia , United States. Per the 2020 census , the population was 176. Keystone is one of the few municipalities in West Virginia with an African-American majority, with 65 percent of

392-557: The Keystone Coal & Coke Company. Keystone was then incorporated in 1909 by the Circuit Court of McDowell County. Its name is derived from the name of the coal and coke company operating at that point. The city was formerly known as Cassville . On May 1, 1895, 15,000 union miners (predominantly black) assembled in Keystone and armed themselves, planning to march across the state line to Virginia in order to force

420-524: The U.S. National Defense University Entertainment [ edit ] Keystone (video game) , part of the Xbox Live Arcade title Fable 2 Pub Games Keystone (band) , led by jazz trumpeter Dave Douglas Keystone (album) , a 2005 album by the band Keystone Cops , a silent movie series Keystone Kapers , a classic Atari game Keystone Studios , a movie studio Places [ edit ] The Keystone asterism in

448-629: The Virginia miners in one bordering mine (also predominantly black) to unionize. The governor of Virginia, Charles O'Ferrall , ordered an artillery company and six infantry companies to the Virginia border, but West Virginia Governor William MacCorkle refused repeated requests from O'Ferrall to reciprocate. This was in response to the N&;W Railroad lowering the minimum price guarantee on coal shipped to Tidewater ports. The operators reduced wages by 20% in response and encouraged their miners to strike. By

476-420: The age of 18 living with them, 25.6% were married couples living together, 29.6% had a female householder with no husband present, and 40.4% were non-families. 38.9% of all households were made up of individuals, and 19.7% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.93. In the city the population was spread out, with 27.2% under

504-460: The age of 18, 7.7% from 18 to 24, 21.4% from 25 to 44, 21.6% from 45 to 64, and 22.1% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 70.3 males. For every 100 females age 18 and over, there were 68.4 males. The median income for a household in the city was $ 10,417, and the median income for a family was $ 12,639. Males had a median income of $ 14,167 versus $ 18,750 for females. The per capita income for

532-493: The builders refused is become the head stone of the corner", is taken to refer to Jesus. Referring to the Book of Mormon , Joseph Smith said that it "was the most correct of any book on earth, and the keystone of our religion, and a man would get nearer to God by abiding by its precepts, than by any other book." Ezra Taft Benson , the 13th president of the Church of Jesus Christ of Latter-day Saints , said it "is my prayer that

560-551: The city has a total area of 0.32 square miles (0.83 km ), all land. The town is a railway station on the Norfolk Southern Railway (former Norfolk and Western ) network. As of the census of 2010, there were 282 people, 122 households, and 74 families living in the city. The population density was 881.3 inhabitants per square mile (340.3/km ). There were 183 housing units at an average density of 571.9 per square mile (220.8/km ). The racial makeup of

588-503: The city was 34.4% White , 65.2% African American , and 0.4% Asian . Hispanic or Latino of any race were 0.7% of the population. There were 122 households, of which 32.8% had children under the age of 18 living with them, 28.7% were married couples living together, 25.4% had a female householder with no husband present, 6.6% had a male householder with no wife present, and 39.3% were non-families. 36.1% of all households were made up of individuals, and 13.1% had someone living alone who

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616-465: The city. The population density was 1,397.1 people per square mile (546.6/km ). There were 236 housing units at an average density of 727.8 per square mile (284.8/km ). The racial makeup of the city was 72.85% African American , 24.50% White , 0.44% Native American , 0.22% from other races , and 1.99% from two or more races. Hispanic or Latino of any race were 0.22% of the population. There were 203 households, out of which 27.1% had children under

644-550: The end of April that year, the mines on the WV side had completely shut down, but a large mine across the state line in Virginia continued to operate. The strike collapsed by the end of August. The UMWA was a relatively young union, and could not support a strike of this magnitude. In the end, most of the mines resumed operations with mostly imported strikebreakers. According to the United States Census Bureau ,

672-443: The keystone is placed, the keystone experiences the least stress of any of the voussoirs , due to its position at the apex. Old keystones can decay due to vibration, a condition known as bald arch . In a rib-vaulted ceiling, keystones commonly mark the intersections of any two or more arched ribs. For aesthetics, keystones are often larger than ribs in vaults and many of the voussoirs (arch stones) in arches, or embellished with

700-690: The logos of many Pennsylvania government departments, in Pennsylvania state route signs , and on Pennsylvania car license plates , and the Shoulder Sleeve Insignia of the Pennsylvania National Guard's 28th Infantry Division (United States) , a Red Keystone, first adopted during World War I in October 1918. In Christianity, Psalms 118:22, translated in the Authorized Version as "The stone which

728-420: The residents being black. The term "Free State of McDowell" was coined by Matthew Thomas Whittico, a local newspaper editor and community leader from Keystone in the early 20th century. Keystone possessed a unique combination of political, social, and economic characteristics that made it an attractive place for African-Americans to migrate to in the late 1800s and early 1900s. Keystone was founded in 1892 by

756-452: The same term [REDACTED] This disambiguation page lists articles associated with the title Keystone . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Keystone&oldid=1245612808 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description

784-482: Was 65 years of age or older. The average household size was 2.31 and the average family size was 2.95. The median age in the city was 38 years. 23.4% of residents were under the age of 18; 9.3% were between the ages of 18 and 24; 23% were from 25 to 44; 31.9% were from 45 to 64; and 12.4% were 65 years of age or older. The gender makeup of the city was 41.5% male and 58.5% female. As of the census of 2000, there were 453 people, 203 households, and 120 families living in

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